CENTA Coupling Install Guide.pdf

CENTAX-L

Assembly and operating instructions

016L-00050…00090-FS20

M016-00002-EN

Rev. 5

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Contents

1 General remarks

2 Safety

2.1 Safety remarks

2.1.1 Signal words

2.1.2 Pictograms

2.2 Qualification of deployed personnel

2.3 Intended application

2.4 Application not in compliance with the intended use

3 Delivery, transport, storage and disposal

3.1 Delivery

3.2 Transport

3.3 Storage

3.3.1 Storage location

3.3.2 Storage of couplings / flexible elements

3.4 Disposal

4 Technical description

4.1 Characteristics

4.2 Specifications

5 Alignment of the units being connected

5.1 Axial alignment

5.2 Radial alignment

5.3 Angular alignment

6 Mounting

6.1 General assembly instructions

6.2 Mounting overview

6.3 Mounting the hub

6.3.1 Mounting the hub with cylindrical bore and keyway

6.3.2 Mounting the hub with conical bore and keyway

6.3.3 Mounting the hub with conical oil interference fit

6.4 Aligning the units

6.5 Positioning the link flange assembly (1.1)

6.6 Mounting the centrifugal protection assembly

6.6.1 Mounting the pre-mounted centrifugal protection assembly

(C)

6.6.2 Mounting the adapter (4), ring (5) and centrifugal protection assembly (1.2)

6.7 Connecting the link flange assembly and the centrifugal protection assembly

6.8 Mounting the links

6.9 After completed mounting

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7 Operation

7.1 Operating faults, root causes and remedy

7.2 Admissible overall misalignment of the coupling

8 Care and maintenance

8.1 Work to be performed

8.1.1 Cleaning the coupling

8.1.2 Visual inspection of the coupling

8.1.3 Visual inspection of links

8.1.4 Visual inspection of the rubber elements / rubber segments

8.1.5 Inspection of the screw connections

8.2 Replacing defective parts

9 Dismantling

9.1 General dismantling instructions

9.2 Dismantling the links

9.3 Disconnecting the link flange assembly and centrifugal protection assembly

9.4 Dismantling the centrifugal protection assembly

9.4.1 Dismantling the pre-mounted centrifugal protection assembly

(C)

9.4.2 Dismantling the centrifugal protection assembly (1.2), the ring (5) and the adapter (4)

9.5 Dismantling the link flange assembly (1.1)

9.6 Removing the mounting supports

9.7 Dismantling the hub (if necessary)

9.7.1 Dismantling the hub with cylindrical bore and keyway

9.7.2 Dismantling the hub with conical bore and keyway

9.7.3 Dismantling the hub with conical oil interference fit

9.8 Reassembling the coupling

10 Wearing and spare parts

11 Annex

11.1 CENTA data sheet D013-013 (lubricated screw connections)

11.2 CENTA data sheet D016-900 Declaration of incorporation according to the EC Machinery Directive 2006/42/EC, Appendix II B

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Index of illustrations

Fig. 5-1 Axial misalignment

Fig. 5-2 Radial misalignment

Fig. 5-3 Angular misalignment

Fig. 6-1 Example: 016L-00075-FS20

Fig. 6-2 Example: 016L-00082-FS20

Fig. 6-3 Mounting the hub with cylindrical bore and keyway

Fig. 6-4 Mounting the hub with conical bore and keyway

Fig. 6-5 Mounting the hub with conical oil interference fit

Fig. 6-6 Positioning the link flange assembly (1.1)

Fig. 6-7 Mounting the pre-mounted centrifugal protection assembly (C)

Fig. 6-8 Mounting the adapter (4) to the flywheel

Fig. 6-9 Mounting the ring (5) and centrifugal protection assembly (1.2) to the adapter (4)

Fig. 6-10 Connecting the link flange assembly and the centrifugal protection assembly

Fig. 6-11 Detail X

Fig. 6-12 Mounting the links ("ccw" counterclockwise rotation)

Fig. 6-13 Mounting the links ("cw" clockwise rotation)

Index of tables

Table 2-1 Shape and size of ventilation holes

Table 5-1 Permissible radial alignment tolerance

Table 5-2 Permissible angular alignment tolerance

Table 6-1 Guide to links

Table 7-1 Troubleshooting table

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1 General remarks

These assembly and operating instructions form a constituent part of the coupling delivery and must be kept in an easily accessible place at all times.

CENTA products are developed and produced to quality standard

DIN EN ISO 9001:2000.

In the interests of further development, CENTA reserves the right to make technical changes.

IMPORTANT

CENTA is unable to accept liability for damage and operating faults caused by failure to observe the operating instructions.

These operating instructions are protected under copyright to CENTA Antriebe

Kirschey GmbH.

In case of technical questions, please enquire with our head office:

CENTA Antriebe

Kirschey GmbH

Bergische Strasse 7

42781 Haan

GERMANY

Phone +49-2129-912-0

Fax +49-2129-2790 centa@centa.de www.centa.info

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2 Safety

The purpose of these operating instructions is to enable users to:

use the coupling safely and correctly maximize efficiency ensure that care and maintenance are carried out correctly

For this reason, these operating instructions must be thoroughly read and understood prior to work on and with the coupling.

WARNING

Injury and material damage can occur as a result of:

Failure to adhere to the safety and accident prevention regulations valid at the relevant installation site

The safety and accident prevention regulations valid at the installation site in question must be adhered to when performing any of the tasks described in these operating instructions.

2.1 Safety remarks

In these operating instructions, safety remarks are indicated by a pictogram and a signal word.

2.1.1 Signal words

The following signal words are used in the safety remarks:

DANGER

Denotes the immediate threat of danger.

If not prevented, fatal or extremely serious injuries can result.

Denotes a potentially dangerous situation.

If not prevented, fatal or extremely serious injuries can result.

CAUTION

Denotes a potentially dangerous situation.

If not prevented, minor injuries and/damage to property may result.

Denotes application tips and particularly useful information. This is not a signal word denoting a dangerous or damaging situation.

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2.1.2 Pictograms

Possible pictograms in the safety precautions:

Warning of a hazardous area

Do not switch

Use protective gloves

Use protective goggles

2.2 Qualification of deployed personnel

All the work described in these operating instructions may only be performed by authorized persons with adequate training and instruction.

Work at the coupling which is not described in these instructions

Only carry out work which is described in these operating instructions.

2.3 Intended application

Application not in compliance with the intended use

The couplings are intended exclusively for use in accordance with the relevant design. They may only be used under the specified conditions.

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Injuries can occur as a result of:

Contact with rotating parts

Shield the coupling in accordance with the applicable accident prevention regulations with an enclosure.

Exception:

The coupling is encased by the driving and driven units.

The scope of delivery provided by CENTA does not include a protective enclosure.

This enclosure must fulfil the following criteria:

Provide protection against persons gaining access to rotating parts

Restrain any rotating parts which may be work loose

Guarantee sufficient ventilation for the coupling

This enclosure must be made of stable steel components. In order to ensure adequate ventilation for the coupling, the enclosure must be fitted with regular openings. For safety reasons, these openings must not exceed the dimensions outlined in table 2-1.

Component Circular openings

[mm]

Rectangular openings

[mm]

Top of the enclosure Ø 8 8

Side elements of the enclosure

Ø 8 8

Table 2-1 Shape and size of ventilation holes

The enclosures must be positioned a minimum of 15 mm distant from rotating parts. The enclosure must be electrically conductive and be included in the equipotential bonding.

Before commencing long-term operation, the plant must successfully complete a test run.

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2.4 Application not in compliance with the intended use

Inadmissibly high torque

Inadmissibly high or low speeds

Exceeding the specified ambient temperature

Inadmissible ambient medium

Inadmissible coupling enclosure

Exceeding the admissible overall misalignment values

Only use the coupling for the specified application.

CENTA bears no liability for damage resulting from application not in compliance with the intended use of the equipment.

Should there be a change of plant parameters, the coupling design must be reviewed by CENTA (address see chapter 1).

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3 Delivery, transport, storage and disposal

3.1 Delivery

After delivery, the coupling:

must be checked for completeness and correctness of the delivery.

must be examined for possible transport damage (which must be reported immediately to the carrier).

3.2 Transport

Incorrect transportation of couplings

Ensure that the coupling is correctly transported.

Material damage to coupling components can occur as a result of:

Contact with sharp-edged objects

Protect coupling components for transportation.

Only hoist coupling components with nylon belts or ropes.

Always cushion parts when supporting them from below.

Following transportation damage:

Check the coupling carefully for damage.

Consult the manufacturer (Address see chapter 1).

3.3 Storage

Material damage to elastic elements and rubber parts can occur as a result of:

Incorrect storage

These parts must be stored laid flat and so they cannot distort, and protected from ozone, heat, light, moisture and solvents.

Rubber parts are marked where possible with their production date. From this date, they may only be stored for a maximum of 5 years.

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3.3.1 Storage location

Requirements imposed on the storage location:

Moderately ventilated and low in dust

Dry (max. 65% humidity)

Temperature stabilized (-10°C to +25°C)

Free of ozone-producing devices such as light sources and electric motors

Free of UV light sources and direct sunlight

Do not store solvents and disinfectants, fuels or lubricants, acids, chemicals etc. in the same location

For more details, refer to DIN 7716.

3.3.2 Storage of couplings / flexible elements

Unpack the parts.

Check the packaging for damage. Replace if necessary.

Check that the wax protection on steel components is intact. If necessary, patch or renew.

Package the parts (for prolonged periods of storage, enclose desiccant and weld into film).

Place the parts into storage.

3.4 Disposal

RECYCLING

Ensure safe, environmentally responsible disposal of operating supplies and exchange parts. For this, locally provided recycling facilities and regulations must be utilized.

For disposal, the coupling parts must be separated where possible and sorted according to material type.

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4 Technical description

4.1 Characteristics

The CENTAX-SEC series L coupling have the following excellent characteristics, due to the combination of a torsionally flexible CENTAX element and the CENTA link coupling with axial angular movement:

Compensation of torsional vibrations and impacts without wear.

Compensation of major axial, radial and angular displacement with minimal restoring forces.

Silent operation and noise damping.

Backlash free, torsionally rigid and radially rigid.

Low-maintenance, free of wear.

Easy visual inspection.

Fast exchange of components.

No special tools required.

The design is protected by international patents.

Type approval from leading classification agencies.

Tried and tested thousands of times over in tough daily operation since 1992.

4.2 Specifications

The specifications can be found in the catalogue and the dimensions in the installation drawing.

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5 Alignment of the units being connected

IMPORTANT

Align the units during the assembly.

Align the units that are to be connected as accurately as possible. In this way, a long service life for the coupling and maximum operating misalignment values can be achieved.

The overall misalignment is composed of the misalignment and the operating misalignment. The permissible overall misalignment values can be found in the corresponding catalogue and must not be exceeded.

All permissible alignment tolerances apply to arrangements at operating temperatures.

If the arrangement would be aligned at a different temperature, there would be additional deviations in the arrangement, which were produced by the difference between the aligning and operating temperature.

For alignment, this has to be taken into account.

After completion of assembly, check the alignment of the coupling again and if necessary correct.

5.1 Axial alignment

Determine the axial misalignment (see Fig. 5-1).

Take installation length L from the installation drawing.

Align the units (installation dimension = L±∆KA max).

Permissible axial alignment tolerance:

∆KA max=0.5 mm

Fig. 5-1 Axial misalignment

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5.2 Radial alignment

Material damage to elastically installed motors can occur as a result of:

Disregard during alignment of the extent by which the motor bearing settles

During vertical alignment, take into account the extent by which the motor bearing settles. Please enquire about specifications for the degree of settling from the motor manufacturer or motor bearing manufacturer.

Measure the radial misalignment with a dial gauge (see Fig. 5-2).

Attach the dial gauge to the hub.

Set the sensor of the dial gauge radially against the centering.

Turn the hub with dial gauge and flywheel slowly by 360°.

Align the units (calculated deviation ≤∆KR max).

The permissible radial alignment tolerance ∆KR max can be found in the following table.

Fig. 5-2 Radial misalignment

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Size

Shorehardeness

[Shore A]

∆KR max

[mm]

50 - 56 45 / 50 / 60 ±0.9

70 ±0.3

64, 65, 67 50 / 60 ±0.9

70 ±0.3

66, 69 - 71 50 / 60 ±1.2

70 ±0.36

72 50 / 60 ±1.5

70 ±0.45

75 50 / 60 ±1.65

70 ±0.51

78 50 / 60 ±1.8

70 ±0.6

80 50 / 60 ±2.1

70 ±0.66

81 50 / 60 ±2.1

70 ±0.75

82 - 90 50 / 60 ±2.4

70 ±0.75

Table 5-1 Permissible radial alignment tolerance

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5.3 Angular alignment

Measure the angular misalignment with a dial gauge (see Fig. 5-3).

Attach the dial gauge to the hub.

Position the sensor of the dial gauge radially against flat surface at a distance R.

Turn the hub with dial gauge and flywheel slowly by 360°.

The maximum dial gauge deflection must not exceed the value 2xSw at any point. The permissible tolerance SW max should be taken from the table below.

Align the units (calculated deviation ≤∆KW max).

Permissible angular alignment tolerance:

∆KW max=0.2°

Fig. 5-3 Angular misalignment

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SAE J620

DIN 6288

R

[mm]

SW max

[mm]

14 209 0.7

16 235 0.8

18 261 0.9

21 311 1.0

24 337 1.1

710 345 1.2

750 365 1.2

850 415 1.4

900 440 1.5

950 465 1.6

1060 520 1.8

1120 550 1.9

Table 5-2 Permissible angular alignment tolerance

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6 Mounting

6.1 General assembly instructions

Any work method which impairs the safety of the coupling is prohibited.

The user undertakes to notify the manufacturer immediately of any changes occurring at the coupling which could impair safety (address see chapter 1).

Before starting work at the coupling, switch off the plant and secure against unintentional start-up.

Assembly of the coupling in the wrong sequence

Only ever assemble the coupling in the described sequence.

Falling coupling components

Secure coupling components against falling to the floor.

Contact with sharp-edged objects

Protect coupling components for transportation.

Material damage can occur as a result of:

Soiled joint surfaces

The surfaces that are to be joined must be free of dirt, preservatives and lubricants.

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Anaerobic adhesives (e.g. Loctite) used for screw locking

This type of screw locking medium may not be in contact with rubber parts.

Screw preparation and tightening torque levels in accordance with

CENTA data sheet D013-013 (see chapter 11.1).

Use suitable lifting devices for assembly.

The following assembly stages are described for coupling 016L-00075-FS20.

Part illustration and marking may different slightly from installation drawing and delivery state.

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6.2 Mounting overview

The following figures are showing examples of possible design.

Fig. 6-1 Example: 016L-00075-FS20

Fig. 6-2 Example: 016L-00082-FS20

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Item Info Designation Remark

1.1 Link flange assembly Pre-mounted by CENTA

1.2 Centrifugal protection assembly Pre-mounted by CENTA

2 Link See installation drawing for the direction of rotation

“cw/ccw“

3 Hub

4 Adapter

5 Ring If scope of supply

C Pre-mounted centrifugal protection assembly

Pre-mounted by CENTA

Mount the coupling as appropriate for the supplied design, according to the sequence described below. For supplied design and the parts built-in, see installation drawing.

Mounting the hub, see chapter 6.3 .

Aligning the units, see chapter 5 .

Positioning the link flange assembly (1.1), see chapter 6.5 .

Mounting the centrifugal protection assembly, see chapter 6.6 .

Connecting the link flange assembly and the centrifugal protection assembly, see chapter 6.7 .

Mounting the links, see chapter 6.8 .

After completed mounting, see chapter 6.9 .

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6.3 Mounting the hub

Mount the hub as appropriate for the supplied design (see installation drawing):

Mounting the hub with cylindrical bore and keyway, see chapter 6.3.1.

Mounting the hub with conical bore and keyway, see chapter 6.3.2.

Mounting the hub with conical oil interference fit, see chapter 6.3.3.

6.3.1 Mounting the hub with cylindrical bore and keyway

Fig. 6-3 Mounting the hub with cylindrical bore and keyway

3 Hub

A Shaft Customer part a Face of shaft b Face of hub

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Incorrect heating of the hubs/flange hubs

Heat the hubs/flange hubs steadily in an oil bath, a fan oven, on an electric hot plate, either inductive or with a flame (ring burner).

Hot coupling components

Use suitable protective gloves.

Heat the hub (3) to a temperature of 170° - 200°C.

Push the hub (3) onto the shaft (A).

Face of shaft must not protrude to face of hub. Otherwise radial replacement of other coupling parts is not guaranteed.

Hot hubs/flange hubs

Before further mounting of hubs/flange hubs, allow them to cool to ambient temperature.

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6.3.2 Mounting the hub with conical bore and keyway

Fig. 6-4 Mounting the hub with conical bore and keyway

A Shaft Customer part

E Nut Customer part

H Washer Customer part a Face of shaft b Face of hub

Brace the hub (3) with the washer (H) and the nut (E) to the shaft (A).

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6.3.3 Mounting the hub with conical oil interference fit

Fig. 6-5 Mounting the hub with conical oil interference fit

19 Screw plug G¼ or G¾ see installation drawing

A Shaft Customer part a Face of shaft b Face of hub c Thread G¼ or G¾ see installation drawing

Lightly oil the cone of the shaft (A).

Remove the screw plug (19) from the hub (3).

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Non-compliance with the operating instructions for the hydraulic pumps

Before carrying out work with the hydraulic pumps, do not fail to read their operating instructions. Only ever work with hydraulic pumps as described in their operating instructions.

Hydraulic fluid spraying out

Use protective goggles.

We recommend the following mounting fluids:

For mounting:

Oil with a viscosity 300 mm2/s at 20°C, e.g. SKF LHMF300

For dismantling:

Oil with a viscosity 900 mm2/s at 20°C, e.g. SKF LHDF900

Connect the pump (pmax= 3000 bar) for expanding the hub (3) to the thread G¼ or G¾ (c).

Screw the pump for pushing on the hub to the shaft.

Build up the oil pressure to push on the hub.

Too fast increase of the expanding pressure in the hub

The increase of the expanding pressure may not exceed

35 bar/minute.

Insufficient expanding pressure in the hub

If the expanding pressure is too low, the necessary pushing pressure is too high.

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Slowly build up the oil pressure for expanding the hub.

Build up the oil pressure alternately until the lift path (p up) of the hub (3) is reached (for p up and reference faces, see installation drawing).

Decrease the oil pressure for expanding the hub.

Remove the pump for expanding the hub from the hub (3).

Maintain the oil pressure for pushing on the hub for one hour.

Decrease the oil pressure for pushing on the hub.

Remove the pump for pushing on the hub from the shaft.

Turn the hub (3), drain oil out of the thread G¼ or G¾ (c) and dispose correctly.

Screw the screw plug (19) into the hub (3).

Do not place a load on the hub for 24 hours.

6.4 Aligning the units

Align the units to be connected (see chapter 5).

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6.5 Positioning the link flange assembly (1.1)

Fig. 6-6 Positioning the link flange assembly (1.1)

1.1 Link flange assembly Pre-mounted by CENTA

3 Hub

B Flywheel Customer part d Centring for the link

Position the link flange assembly (1.1) between the hub (3) and flywheel (B).

Slide the link flange assembly (1.1) over the hub (3) and place down on the hub.

The centrings for the links (d) must point towards the hub (3).

6.6 Mounting the centrifugal protection assembly

Mount the centrifugal protection assembly as appropriate for the supplied design (see installation drawing):

Mounting the pre-mounted centrifugal protection assembly (C), see chapter 6.6.1 .

Mounting the adapter (4), ring (5) and centrifugal protection assembly

(1.2), see chapter 6.6.2 .

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6.6.1 Mounting the pre-mounted centrifugal protection assembly (C)

Fig. 6-7 Mounting the pre-mounted centrifugal protection assembly (C)

1.2 Centrifugal protection assembly Pre-mounted by CENTA

4 Adapter

30 Screw If ordered

31 Washer If ordered

B Flywheel Customer part

C Pre-mounted centrifugal protection assembly

Pre-mounted by CENTA l Forcing thread For dismantling

Push the pre-mounted centrifugal protection assembly (C) into the centring of the flywheel (B).

Screw the pre-mounted centrifugal protection assembly (C) to the flywheel

(B) using the screws (30) and the washers (31).

IMPORTANT

Tightening torques for elements to connect couplings with customer parts could deviate from CENTA data sheet D013-013.

Consider specifications on installation drawing.

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6.6.2 Mounting the adapter (4), ring (5) and centrifugal protection assembly

(1.2)

Fig. 6-8 Mounting the adapter (4) to the flywheel

4 Adapter

30 Screw If ordered

31 Washer If ordered

Push the adapter (4) into the centring of the flywheel (B).

Screw the adapter (4) to the flywheel (B) using the screws (30) and the washers (31).

Tightening torques for elements to connect couplings with customer parts could deviate from CENTA data sheet D013-013.

Consider specifications on installation drawing.

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Fig. 6-9 Mounting the ring (5) and centrifugal protection assembly (1.2) to the adapter (4)

1.2 Centrifugal protection assembly Pre-mounted by CENTA

4 Adapter

5 Ring

9 Screw

Push the ring (5) into the centring of the adapter (4).

Push the centrifugal protection assembly (1.2) into the centring of the ring

(5).

Screw the centrifugal protection assembly (1.2) and the ring (5) to the adapter (4) using the screws (9).

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6.7 Connecting the link flange assembly and the centrifugal

protection assembly

Fig. 6-10 Connecting the link flange assembly and the centrifugal protection

Fig. 6-11 Detail X

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1.1 Link flange assembly

1.2 Centrifugal protection assembly

1.3.1 Bolt 2x180°

1.3.2 Sheet

1.3.3 Circlip DIN471 2x180°

1.3.4 Nut

1.3.5 Screw

1.3.6 Washer

3 Hub

X Detail See Fig. 6-11 e Drilling for bolt in centrifugal protection f Drilling for bolt in link flange assembly

Ensure during installation that the bolts are in the right position.

Push the bolts (1.3.1) into the drillings (f; 2x180°) of the link flange assembly (1.1) and secure them with the circlips (1.3.3).

Turn the link flange assembly (1.1) towards the centrifugal protection assembly (1.2) until the drillings (e) in the centrifugal protection assembly

(1.2) and the bolts (1.3.1) are aligned.

Push the link flange assembly (1.1) towards the centrifugal protection assembly (1.2) until a distance of approx. 5 mm is reached.

By doing so, place the bolts (1.3.1) in the drillings (e) of the centrifugal protection assembly (1.2).

Push the screws (1.3.5) with the washers (1.3.6) into the drillings of the link flange assembly (1.1).

Push the sheets (1.3.2) onto the screws (1.3.5).

Screw the link flange assembly (1.1) to the centrifugal protection assembly

(1.2) and the sheets (1.3.2) using the screws (1.3.5), washers (1.3.6) and nuts (1.3.5).

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6.8 Mounting the links

IMPORTANT

The links must be mounted in such a way that they are subjected to tensile load.A differentiation is made between the direction of rotation left (ccw) and right (cw), looking towards the driving end.

Links are packaged in sets.

All links of a link set are the same weight.

Only mount links in complete sets "crosswise".

Instructions on how to mount one link are provided following. Item numbers and the part illustrations may differ slightly from the delivery state.

The following table gives an overview of the number of size of the links used.

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CENTALINK

Size

CENTAX

Size

Link

Size Quantity

48/50 -

55 50/52/55/56 4

60/65/67 64/65/67 5

68 68 6

69 - 7

71 - 8

70 69/70/71

72 72 5

75 75

176/276

76 - 7

77 - 8

78 78

177/277

80/81 80/81

179/181/279/281

82/84/85 82/84/85

183/184/283/284

88 88 8

90 90 9

Table 6-1 Guide to links

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Fig. 6-12 Mounting the links ("ccw" counterclockwise rotation)

Fig. 6-13 Mounting the links ("cw" clockwise rotation)

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X/Y Looking at the flange

1 Link unit a Label "Flange" b Label "Hub" c The recess must be pointing towards the flange

1.1 Collar sleeve

2 Hub/Tube

3 Flange

4 Bearing unit comprising:

4.1 PU bearing

4.2 Sliding bearing

d PTFE coating must be at the top

5 Washer for centrifugal bearing

6 Screw ISO4014-10.9 M.. Dimensions as shown in parts list

7 Screw ISO4014-10.9 M.. Dimensions as shown in parts list

8 Washer Only at size 3 and 4

Set the link unit (1) marked "Flange" on the centring fixture of the flange (3).

Position the link side with the inscription "Hub" against the centring fixture of the hub/tube (2).

Tighten the screw (7; "Flange") with the washer (8; only at size 3 and 4) and the screw (6; "Hub"), washer for centrifugal bearing (5) and the bearing unit (4; PTFE coating must be at the top) alternately by hand until the centring fixtures of the collar sleeves (1.1) are seated in the centring fixtures of the hub/tube (2) / flange (3).

Repeat the mounting section above until all links are mounted (for quantity of the links, please see the table guide to links).

Fasten the screws (6 and 7) of the link unit (1) by required tightening torque

"crosswise".

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6.9 After completed mounting

Loose screw connections

Before commissioning, the tightening torque levels of all screws must be checked and corrected if necessary.

Before commencing long-term operation, the plant must successfully complete a test run.

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7 Operation

Worn coupling components

If the running noises change and/or vibrations occur turn the plant off immediately.

Determine the fault and its root cause, and remedy.

The troubleshooting process is simplified by the table in the next chapter.

On principle in case of a fault, an analysis of the entire plant should be performed.

7.1 Operating faults, root causes and remedy

Faults Possible root causes

Remedy

Running noises or vibrations in the plant

Alignment error 1. Switch off the plant

2. Check alignment, correct if applicable

3. Trial run

Loose screws 1. Switch off the plant

2. Check alignment, correct if applicable

3. Check screw torque levels and correct if necessary

4. Trial run

Breakage of the rubber element

Alignment error 1. Switch off the plant

2. Exchange defective parts

3. Check alignment, correct if applicable

4. Trial run

Inadmissibly high torque

1. Switch off the plant

2. Exchange defective parts

3. Check alignment, correct if applicable

4. Trial run

Table 7-1 Troubleshooting table

In case of uncertainty or if you have questions, please contact our head office

(address see chapter 1).

7.2 Admissible overall misalignment of the coupling

The overall misalignment values can be found in the catalogue.

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8 Care and maintenance

The coupling requires low maintenance. It is possible to perform a visual inspection during the regular scheduled maintenance intervals for the complete unit. Every 12 month a visual inspection is strictly required.

8.1 Work to be performed

8.1.1 Cleaning the coupling

Remove any loose dirt from the coupling.

8.1.2 Visual inspection of the coupling

Inspect the coupling for cracks, chips or missing parts.

Replace faulty and missing parts.

8.1.3 Visual inspection of links

Make a visual inspection of the links every 12 months.

Pay particular attention to the rubber bushes of the links. Squash folds and small cracks of up to 1 mm may be considered normal.

In the case of crack depths in excess of 1 mm, or detachment of the rubber-to-metal bond, the links must be exchanged.

Exchange the links:

In the event of damage

When replacing the rubber elements

Links are packaged in sets.

All links of a link set are the same weight.

Only mount or replace links in complete sets.

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8.1.4 Visual inspection of the rubber elements / rubber segments

IMPORTANT

Exchange the rubber elements / rubber segments in the event that:

The wear specifications given in W000-00002 are exceeded

Assess the rubber elements / rubber segments as described in CENTA guidelines W000-00002.

8.1.5 Inspection of the screw connections

Check the tightening torque levels of all screws and if necessary, correct.

8.2 Replacing defective parts

Remove the coupling as described in chapter 9.

Replace wearing parts.

Mount the coupling as described in chapter 6.

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9 Dismantling

9.1 General dismantling instructions

Any work method which impairs the safety of the coupling is prohibited.

The user undertakes to notify the manufacturer immediately of any changes occurring at the coupling which could impair safety (address see chapter 1).

The coupling is dismantled in reverse order to the assembly process.

Please refer to the illustrations in chapter 6.

Dismantling of the coupling in the wrong sequence

Only ever dismantle the coupling in the described sequence.

Falling coupling components

Secure coupling components against falling to the floor.

Contact with sharp-edged objects

Protect coupling components for transportation.

Use suitable lifting devices for dismantling.

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9.2 Dismantling the links

See Fig. 6-12 or 6-13:

Loosen the screws (6 and 7) of the links (1) alternately ("Flange"/"Hub") and remove with washers (8; with link size 3 and 4 only), bearing unit (4) and washers for centrifugal bearing (5).

Remove the links (1).

9.3 Disconnecting the link flange assembly and centrifugal protection

See Fig. 6-10 and 6-11:

Support the link flange assembly (1.1).

Loosen the screws (1.3.5) of the connection link flange assembly (1.1) and centrifugal protection assembly (1.2).

Separate the link flange assembly (1.1) approx. 10mm from the centrifugal protection assembly (1.2).

Remove the screws (1.3.5) with the washers (1.3.6), the nuts (1.3.4) and the sheets (1.3.2).

Place the link flange assembly (1.1) on the hub (3).

Pull the circlips (1.3.3; 2x180°) from the bolts (1.3.1) and remove them as well as the bolts.

9.4 Dismantling the centrifugal protection assembly

Dismantle the centrifugal protection assembly as appropriate for the supplied design (see installation drawing):

Dismantling the pre-mounted centrifugal protection assembly (C), see chapter 9.4.1 .

Dismantling the centrifugal protection assembly (1.2), the ring (5) and the adapter (4), see chapter 9.4.2 .

9.4.1 Dismantling the pre-mounted centrifugal protection assembly (C)

See Fig. 6-7:

Loosen the screws (30) of the connection pre-mounted centrifugal protection assembly (C) and flywheel (B) and remove with the washers (31).

Pull the pre-mounted centrifugal protection assembly (C) out of the centring of the flywheel (B) and remove.

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9.4.2 Dismantling the centrifugal protection assembly (1.2), the ring (5) and the adapter (4)

See Fig. 6-9:

Loosen and remove the screws (9) of the connection centrifugal protection assembly (1.2), ring (5) and adapter (4).

Pull the centrifugal protection assembly (1.2) out of the centring of the ring

(5) and remove.

Pull the ring (5) out of the centring of the adapter (4) and remove.

See Fig. 6-8:

Loosen the screws (30) of the connection adapter (4) and flywheel (B) and remove with the washers (31).

Pull the adapter (4) out of the centring of the flywheel (B) and remove.

9.5 Dismantling the link flange assembly (1.1)

See Fig. 6-6:

Remove the link flange assembly (1) out of the installation space.

9.6 Removing the mounting supports

Remove all mounting supports.

9.7 Dismantling the hub (if necessary)

Dismantle the hub (3) as appropriate for the supplied design (see installation drawing):

Dismantling the hub with cylindrical bore and keyway, see chapter 9.7.1 .

Dismantling the hub with conical bore and keyway, see chapter 9.7.2 .

Dismantling the hub with conical oil interference fit, see chapter 9.7.3 .

9.7.1 Dismantling the hub with cylindrical bore and keyway

See Fig. 6-3:

Remove the hub (3) from the shaft (A).

9.7.2 Dismantling the hub with conical bore and keyway

See Fig. 6-4:

Loosen the nut (E) and remove with the washers (H).

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9.7.3 Dismantling the hub with conical oil interference fit

See Fig. 6-5:

Non-compliance with the operating instructions for the hydraulic pumps

Before carrying out work with the hydraulic pumps, do not fail to read their operating instructions. Only ever work with hydraulic pumps as described in their operating instructions.

Hydraulic fluid spraying out

Use protective goggles.

Injuries and material damages can occur by:

Suddenly loosening hubs

Secure the hub with a hydraulic tool against sudden axial loosening.

We recommend the following mounting fluids:

For mounting:

Oil with a viscosity 300 mm2/s at 20°C, e.g. SKF LHMF300

For dismantling:

Oil with a viscosity 900 mm2/s at 20°C, e.g. SKF LHDF900

Remove the screw plug (19) from the hub (3).

Connect the pump (pmax= 3000 bar) to the thread G¼ or G¾ (c) of hub (3) to expand the hub.

Screw the pump to the shaft (A), in order to hold the hub.

Build up oil pressure in order to hold the hub.

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Too fast increase of the expanding pressure in the hub

The increase of the expanding pressure may not exceed

35 bar/minute.

Slowly build up oil pressure to expand the hub (pmax= 1500 bar).

Slowly reduce the oil pressure for holding the hub.

Slowly reduce the oil pressure for expanding the hub.

Repeat the above mounting section until the hub is completely released from the shaft.

Remove the pump for holding the hub from the shaft (A).

Remove pump for expanding the hub from the hub (3).

Turn the hub (3), drain oil out of the thread G¼ or G¾ (c) and dispose correctly.

Screw the screw plug (19) into the hub (6).

9.8 Reassembling the coupling

Reassemble the coupling as described in chapter 6.

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10 Wearing and spare parts

Mounting and/or utilization of non-original CENTA parts

Never use parts from other manufacturers.

A stock of the most important wearing and spare parts is the most important condition to ensure that the coupling is functional and ready for operation at all times.

We only provide a warranty for CENTA original parts.

Wearing parts of this coupling:

The link kits. These contain all screws, washers and bearing units. In the event that links or rubber bushes of the link are faulty, they must be replaced as a complete set.

The rubber element(s). When exchanging the rubber element(s), all screw connections must be renewed. These must be ordered separately.

Links are packaged in sets.

All links of a link set are the same weight.

Only mount or replace links in complete sets.

When ordering a spare, specify:

Order no.

Coupling order no.

Drawing no.

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11 Annex

11.1 CENTA data sheet D013-013 (lubricated screw connections)

Validity:

For all non-dynamically stressed screw connections with lubricated shank bolts in accordance with ISO 4014, ISO 4017 and ISO 4762 (DIN 912) with metric standard thread in accordance with DIN ISO 262, unless other specifications are given on CENTA documents.

Preparation of parts that are to be screwed together:

The joining areas must be free of dirt, preservatives and lubricants.

Preparation of screws that ARE NOT secured with liquid screw locking medium:

Give the screws extra lubrication with motor oil under the screw head and in the thread.

Preparation of screws that ARE secured with liquid screw locking medium:

Give the screws extra lubrication with motor oil under the screw head. Remove all grease from the thread.

Screw tightening method:

Screw in (by hand with torque wrench).

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11.2 CENTA data sheet D016-900

Declaration of incorporation according to the EC Machinery Directive 2006/42/EC, Appendix II B

Manufacturer:

CENTA Antriebe

Kirschey GmbH

Bergische Strasse 7

42781 Haan / GERMANY

Contact:

Phone +49-2129-912-0

Fax +49-2129-2790 centa@centa.de www.centa.info

We herewith declare that the incomplete machine

Product: Highly elastic coupling CENTAX-L

Model / series code: CX-L / 016L

Installation size: 50…90

Design: all

Serial number: according to shipping documents, if applicable

- provided this is possible as far as the scope of supply is concerned - complies with the following basic requirements of the Machinery Directive 2006/42/EC

Appendix I, subchapters 1.1.2, 1.1.3, 1.1.5, 1.3.2, 1.3.3, 1.3.4 and 1.5.4.

In addition, we declare that the special technical documents for this incomplete machine were compiled according to Appendix VII Part B and undertake to forward these to the market monitoring authorities by request via our

"Documentation Department".

Commissioning of the incomplete machine is interdicted until the incomplete machine has been incorporated in a machine and the latter complies with the provisions of the EC Machinery Directive and the EC Declaration of Conformity according to Appendix II A is on hand.

The declaration is invalidated by every modification to the delivered parts.

Authorised representative for the compilation of the relevant technical documents:

by order of Gunnar Anderseck

(Authorised Person Documentation)

Declaration of incorporation was issued:

Haan, 09.12.2009 by proxy Dipl.-Ing. Jochen Exner

(Design Management)

3.4 Disposal

8.2 Replacing defective parts

9.8 Reassembling the coupling