Asset _3322- Booth 61 Carousel - Conveyor Evaluation_Redacted.pdf

Visit Report

Letterkenny Army Depot- Letterkenny, PA.

Report prepared by: for Christopher Ray and Jody Manges

Principle Personnel Contacted at Letterkenny Army Depot: Christopher Ray, James Aikman

Purpose: Inspection and evaluate Conveyor on the Asset # N3322 Booth 61 Carousel - Paint and Powder Coating Line

Date: Wednesday, July 12, 2017

Summary:

In coordination with Letterkenny personnel, an inspection of the conveyor and overall system described as the Booth 61 Carousel Line was performed with a specific focus on the conveyor that has been performing poorly. Peripheral inspections and reporting is also provided as a result of the “cold” line inspection that was needed in order to ascertain the scope of problems with the conveyor system.

This report will first summarize conveyor issues that need to be addressed. Following the summary, included will be recommendations and potential service suppliers. Finally, other unit operations associated with this system will be discussed. The specifics of this section in this report will cover how these components affect the performance of the conveyor.

Conveyor – Deficiency Observations:

Previously reported, the N3322 conveyor has experienced derailments creating difficulties conveying painted parts through the system. The conveyor is a Unibilt, enclosed track system with oil lubrication and a caterpillar drive. The system is a product of Jervis B Webb Company, owned by Daikufu North America, Farmington Hills, Michigan 48331. The following sections of this report, enumerate the deficiencies found:

1. Line Layout, Enclosed track issues:

At the initiation of this inspection, it was necessary to “map” the conveyor line so that it would be sufficiently understood in relationship to caterpillar drive size, condition of the Unibilt chain, take up, and lubrication system.

The attached drawing (Figure 1, Page 8) of this report shows the line layout for the purposes of determining chain length and for the purposes of evaluating drive size.

During the measurements, it was found that the line spacing narrows (see red lined circle in Figure 1) which is an indication that the supports were not adequately spaced or the line would be “linear”. In fact, two of the angular overhead supports are bent, probably to accommodate this line shift. There is also an area of the conveyor tube that is damaged: See Image #2 below. The tube is damaged as a result of a probable fork lift mast impact causing the chain to twist and run over a hump. This adds resistance to the drive. The chain is not pinched, however.

Image #2: Damaged Conveyor Tube- also noted on Page 8, this report

As a follow up to this point, in order to assemble the track tubing, an alignment tool is recommended by Jervis Webb, which was more than likely not used. See an excerpt of the attached Bulletin Bul-8088 at the end of this report for Part # V8624. Future repairs and realignment should include a requirement that Webb’s alignment tool be used. The result will be lower resistance to motion provided by the caterpillar drive system. The Page number is 14 from the Bulletin, Page 9 in this report.

2. Inspection Port:

The inspection port for this line was not found but it is an essential component needed for periodic visual inspection of the conveyor chain. In its absence, it is very difficult to determine whether individual rolling elements of the chain are operating properly and not jammed. Replacement of “dead” links is impossible without it. See and excerpt of the attached Bulletin Bul-8088 at the end of this report for Part # V20502. The Page number is 14 from the Bulletin, Page 9 in this report.

3. Chain Loading Port:

The chain loading port for this line appears to have been eliminated as well. The loading port is best located prior to the caterpillar drive so that the drive can be used to feed in the chain. It is possible that a decision was made not to do this because the system is typically run at 12 feet per minute. Usually, a variable speed drive (VFD), operating a slow speed is used while the chain is manually pulled forward past the drive system. The writer understands that this system does have variable speed capabilities with the minimum speed of roughly 3 FPM, which is fine for chain loading. In summary, a loading port should be installed to improve serviceability of the system. See Page 14 of the attached Bulletin Bul-8088 at the end of this report for Part # V17095. The Page number is 14 from the Bulletin, Page 9 in this report.

4. Caterpillar Drive:

This drive has a 150:1 Gear Box reducer driven by a 1 HP Baldor Motor -operating speed of 1750 RPM and a Service Factor of 1.0. The resulting output drive speed was not timed, but is fixed and reported at 12 FPM. That number makes sense based on the input output ratio and a 1:1 motor to gear reducer sheave arrangement. The motor output bearing is exhibiting high acoustic (AE) vibration, indicating that it is approaching failure (spalling)- (ref: Vibration Summary Page attached to this report, Page 10,11)

The drive itself is exhibiting excessive vertical displacement as the chain is advanced under no load. The gear box appears to be functional.

As a result of these measurements and observations, either a complete overhaul or replacement of the drive unit is warranted. The writer recommends that the drive be replaced with a VFD compatible drive and an inverter duty motor with a service factor of at least 1.15. The variable speed will allow for servicing the line and for the finishing with CARC “like” powders or liquid CARC coating, which have mutually exclusive cure schedules. For replacement, the applicable drive unit appears on Page 12 of this report.

4. Line Lubricator:

The line lubrication system deployed on this system is a vintage KLS Lubriquip five point Lubricator (see Image # 2 on page 4 that follows). The systems recommended by Jervis Webb today, are nine points, pin and bearing specific systems which deliver on a cycle/time basis to the chain as needed. The lubricants are specific to the operating temperatures and the amounts delivered are specific. Under normal lubrication, the rollers should not be wet and the floor below should never become wetted with lubricant.

Image #2

In summary, the line lubrication system should be replaced, upgraded, and the lubricant selected should be suitable for the service temperatures intended. The Unibilt chain manufacturer does not recommend a dry film lubrication, but does specify that there are to nine points, not five that require lubrication. The documents associated with the upgraded lubricator and lubricant are attached to this report.

Specifically, Pages 13 through 15 of this report detail the correct lubrication system for this conveyor starting with Bulletin SB-610-001 Rev 3 from Jervis B Webb, followed by Drawing 806619 for the replacement Lubricator and Bulletin KF 101-220 for the proper lubricant.

5. Conveyor Track:

Just prior to the time that the line lubrication system and lubricant are replaced, Letterkenny Personnel should install a UN91 set of brush cleaners to remove debris inside of the approximately 460 feet of conveyor tubing. The brush holders replace a rolling link and it would be advisable that if this has never been done, that at least two brush sets be deployed. The writer does not recommend that the brushes be left in the system once the cleaning is complete. The holders and brushes (as well as replacement brushes) should be retained however for periodic cleaning of the system.

Here is an example of that brush cleaner:

UN91-MightyLube-8618 Unibilt & Rapid conveyor Brush cleaner set

6. Conveyor Chain:

The conveyor chain could not be inspected however with the implementation of Item #2 on Page 2 of this report, inspection should become a quarterly Preventative Maintenance item looking at the effectiveness of lubrication and for “dead carriers”.

The conveyor chain was checked for stretch tolerances and cleanliness. The result yielded that the chain section tested was within the tolerance set by Jervis Webb. See Jervis Webb Document # M-460-004 attached at Page 16 of this report. The chain however, was quite dirty and loaded with coating materials. The root cause to excessive coating materials is that the conveyor is too low in the coating areas paths of the powder and wet painting booths, and particularly because the air flow into the liquid painting booths is inadequate. Two photographs of this problem are shown at the top of the following page in this report. The root cause is inadequate air flow in the paint booths and the low elevation of the conveyor track. The writer will supply and additional report next week with details of this issue. The issue is “out of scope” but may prove to be useful in making adjustment to accommodate the issue.

Image of Paint on the Chain Image of overspray on the Conveyor track

The chain should be dry ice cleaned at the same time that the enclosed track is brushed and at the same time the lubricator and caterpillar drive are serviced or better yet replace.

The writer also recommends that purge air be added to the top of the conveyor track to blow air downwards in the track to keep paint and powder out. For electrostatic painting, a welded 4 to 6” metal “face guard” could be attached to the track facing the painter which would be used to capture overspray paint or powder before it wraps into the track. This assumes the painter does not stand under the conveyor and paint upwards into the track.

After the cleaning, and assuming the lines cannot be raised in the “T” slot of each booth, the conveyor tubes in the booth should have installed, a connection point to introduce a light amount of permanently installed, dry, compressed air introduced at the top or the conveyor tube in the middle of the booth to provide air flow into the track in order to help keep powder and paint out. While the writer does not expect that this implementation will solve the conveyor track position issue, it should help in keeping material out of the track and off of the chain.

7. Conveyor Take-up:

It has been reported that the conveyor take-up does not move freely. To this issue, any contractor engaged to effect repairs and improvements to this conveyor system should be required to clean the track engagements where the take-up slides in and out, and should also be engaged to evaluate the range of motion and controls provided with the cylinder actuating the take-up motion. It is clear that the drive is reacting to irregular motion of the take-up which could be caused by improper settings on the cylinder, or paint that is inhibiting motion of the take-up.

No routine “appearance” plant painting should be allowed where the take-up is located as these elements must be allowed to move in and out freely.

Additionally, the take-up cylinder pressure regulator should be at ground level but locked through so that adjustments can be easily made by maintenance to adjust for line operation and load.

For reference, should it be found that the six-foot diameter Take-up cannot be made to function properly, see the attached Bulletin Bul-8088 on Page 17 in this report for a replacement. The part number will be V20147 and when ordering, the “spread must be specified. The Bulletin Page number is Page 21

8. Line Loading:

The Unibilt Chain has the standard “H” attachment which allows hanging up to a 125 lb.

load per pendant. Do not exceed this safe load without a load bar that will spread the load over two pendants. The weight of heavy parts must be known before they are hung. It is also important to remember that the cross pin on the “H” attachment to the chain forms the grounding loop needed for electrostatic painting and electrostatic powder coating. These cross pins must be kept clean and the hooks on which parts are hung must also be kept clean for each painting cycle. Powder coatings will support anywhere from 600 Volts to 1KV per .001” of film thickness. These materials on the hook and support portion of the process can mean the difference between successful painting and unsuccessful painting.

For reference, Part # V17095 is shown in the Bulletin Bul-8088. Specifically, the Bulletin page number is 22 and is Page 18 in this report.

Conclusions:

There are significant corrective steps needed for the Asset # N3322 - 61 Carousel Line’s conveyor. A complete summary of the recommendations contained in this report appears on Page 19 at the end of this report. Once the improvements are made, the production line will be ready for extended painting and powder coating without motion problems.

The separate report will follow which is outside of the scope of this contract. The later report will include observations regarding the painting and curing provisions on this paint line as well as safety concerns. In addition to other supporting documents.

8 7 6 5 4 3 2 1

8 7 6 5 4 3 2 1

Asset # 3322 - Letterkenny Unibilt Booth 61 Carousel Conveyor Layout

MH 7-19-17

LTKY - 01

1 2

216.01 in

2023.13 in

1765.15 in

15.53 in

761.26 in

Damaged Area of Conveyor Offset - shown not closed Line is not linear in the last roughly 35 feet before curve

1019.07 in

Location of Lubricator

Take-up Location

Drive Location

Asset # 3322 - Booth 61 Carousel - Conveyor Configuration

Mike Helmers Typewritten Text

, Unibilt Conveyor Components

Track Splices

Splice Clamp V8624 Welded Splice Connection

Weight: 51b

This welded type oftr~dk splice is recommended where experienced welders are available. It eliminates the necessity for splice hc;mgers and ensures a smooth continuous track.

Splice Clamp V8624 aligns the sides and track tread and holds the two track sections in position for welding .

Splice Hanger Assembly V8671

Bolted Splice Connection

Weight: 0. Ib

Splice Hanger Assembly V8671 securely clamps and holds the joined section of track in alignment. Two heavy cast wedges with serrated edges are drawn together by bolts through the sides of the bracket.

When the wedges are tightened, the serrations tightly grip the track and clamp the track ends securely together. This assembly is also used as a suspension bracket. (PQwer only use,)

Track Accessories

Inspection Gate V20502

Weight: 12 Ib 27" ., This removable track section " ~'.

is designed to simplify inspection i and maintenance of the conveyor chain. v ;

It should never be opened while the conveyor is in operation.

Building and Oven Expansion Joints

V20143

Weight: 12 10

This expansion joint should be used to compensate for track eXP<;Insion caused by heat, for any conveyor pass ing through an oven. Also, this expansion joint should be installed in line with <;III building expansion joints.

Weight: 12 Ib

At least one installation gate is required on every conveyor and is normally located at the exit end of the drive. It should never be opened while the conveyor is in operation.

Take-Up Expansion

.,Joint V20144

Weight: 20 Ib

This expansion joint is for use on those occasions when you have a field-erected take-up (23" closed-31" open).

Mike Helmers

Reporting by C ...Trend dre Vibration Analysis Report

Report Date: Wednesday, July 12, 2017

ConSl.Jltant:

7/19/2017 Page Vibr(,3tion Analysis Report

Mike Helmers

Reporting by C-Trend

Latest Machine Status Vibration Points

N3322 Drive

Name Oate/Time Status ISO (inch/s) Brg. Noise (BOU) Total (g)

1H 7/1212017 2:02:09

PM OK 0.083 16 0.3

2H 7/12/2017 2:01 :31

PM WARNING 0.078 75 0.9

3H 7/12/2017 2:02:39

PM OK 0.034 4 0.3

4H 7/12/2017 2:03:33

PM

OK 0.022 10 0.2

7/19/2017 Page Vibration Analysis Report

Mike Helmers

Unibilt Conveyor Components

Caterpillar Drive Units Caterpillar Drive Unit

600# Chain Pull Capacity

1'2-9/16"

Weight: 375 Ib

1~' ~~~~~

Chain Travel ~

Standard drives shown without guards are for illustration purp()se~ only.

Guards must always be in place before operating equipment.

The Uniqilt c~terpillar drive unit is designed to provide maximum flexibility for all enclosed track power requirements in a single compact package. Inverted drives are available upon request.

Many outstan(Jing features make this drive unique in its class.

• The drive has a 600 Ib chain pull.

• Constant speed or vqriable speed availaqle from stock. Right handed drives are standard.

• Variable speed drive units are equipped with a Vari speed pulley providing a 3-to-1 speed range.

• Speed ranges from .6 FPM to 64.2 FPM in a ratio of 3-to-1 are available using stock parts and reducer ratios.

• Guards on drive units comply with applicable OSHA and ANSI 820.1 standards.

• The drive has an electrical automatic Qverload cut off device, which is factory adjlJsted at 750 Ib to stop the motor automatically when c;'In overload or jam condition occurs.

• Multiple drives are required when chain pulls exceed 600 lb. Consult your Webb Regional Manager for multiple drive situations.

• Solid fixed heat-treated steel caterpillar driving dogs eliminate the need for special Cqms or springs to engage the conveyor chain.

" 1800 RPM, 230/460 volt, 3 phase, 60 hertz, TEFC motors are supplied unless otherwise specified.

" Motor controls (push buttons, starters, thermal overloads, etc.) are not included with drives, but can be supplied to your specifications.

• prives are available with up to 10-to-1 speed variation, with AC or DC power supplies when remote control electrical speed variation and bc;llancing is desired.

• Drive chain and beltguards are standard and supplied with each drive.

• Four 9/16"-diameter holes are provided, one at each corner as illustrated, for convenient hanging.

Orive units should be braced adequately to eliminate vibration. Refer to installc;ltion methods for hanging and bracing technique.

• Unibilt caterpillar drives permit positioning the drive c;lt the most advantageous location on the system, rqther than confining drive location to a horizontal turn, as necessary when driving with a sprocket drive.

• Drive frame and track are painted Unibilt Blue.

Mike Helmers

. Service Bulletin .JIERVIS B. WEBB COMPANY _ WORLDWIDE MATERI~L HANDLING SOLUTIONS : :Bulletin #: S8- 610-001 Rev: 03 34375 West Twelve Mite Road

Date: 02-27 -07 Page 1 of 1 Farmington Hills, MI. 48331·5624

Subject: Lubrication Req~irements for Unibilt® Conveyor Chain and Track

Proper lubrication of Unibilt® conveyor chain and track is essential for extended service life. This service bulletin addresses the initial lubrication requirements and recommended long term maintenance practices for Unibilt® chain and track.

Unibilt@ Ghain A§s~mbli~s

Unibilt® chain must be lubricated immediately after installation.

• Recommended lubricant: DuBois Chemicals #MPO-30 oil.

• Optional Lubricants: Must be equivalent to SAE 30, AGMA #3 or ISO 100 viscosity. EP additives, and/or polymer additives are recommended.

Product information on DuBois Chemicals #MPO-30 oil can be fo~md at www.duboischemicals.com/ or by Google™ key word search on "DuBois Chemicals".

Water based, low viscosity or dry film type lubricants are not recommended for Unibilt® chain and may void any applicable Jervis B. Webb Company product warranties.

An automatic chain lubricator with 9 nozzles is strongly recommended for typical systems and is required for heavily loaded systems or systems operating in adverse environments such as high temperature. Refer to figure #1 for the 9 location points on the chain requiring lubrication.

The use of automatic lubricators with less than 9 nozzles may void any applicable Jervis B. Webb Company product warranties. Figure 1" Lubrication Points for Unibilt® Chain

Adequate maintenance lubrication is required for all systems and in particular for heavily loaded systems or systems operating in adverse environments such as high temperatures. The frequency and amount of lubrication is unique for each conveyor application and is normally determined after the initial installation and after a 1 month evaluation. Proper lubrication is generally defined as having a visually wet oil film on all bearing surfaces and wheel rolling surfaces.

Unibilt® Track

For extended service life of the Unibilt® track on heavy duty systems, an initial film of lubricant should be applied to the internal track rolling surfaces. This initial lubricant film can be achieved by several methods; prolonged initial operation of the chain lubricator, pre-lubricating the track prior to installing the chain, or manually spraying lube into the track and allowing the load wheels to track it evenly throughout.

Track re-Iubrication is normally not required if the conveyor chain is properly maintained and lubricated. With proper chain lubrication, small amounts of lubricant are normally transferred onto the track rolling surfaces and will maintain a proper lubricating film on the track. Dry track rolling surfaces are generally an indication of substandard chain lubrication maintenance.

For questions regarding this service bulletin, call Webb Customer Service elt 248-553-1232 Copies of this bulletin are available at http://www.jervisbwebb.com/PartsService/Service8ulletins.aspx

©2007 Jervis B. Webb Company: This Service Bulletin is intended to prI?Jide general infmnalicn ~ng the installaticn <nlIex- service c:I the subja::t EGuipment in typical cmVf;¥J' CfJPIicaticns. Due to the vaiety c:I o:nveycx-~icati()1s CJld asscciated envirrnmental cmditicns, Jervis 8. Webb Coolpaly mc»<es no representatirns, wCYTCJ1ties ex guamties that a;lherence to the reca'Y1mendaticns a1d inslructicns cmtaned in this bulletin will result in the ~ installaticn cndIex- service c:I the subject ~uipment, ex- that the infamaticn is canplete ex- occurate IT <rly paticulQr Wicati(l1. Jervis B. Woob O;rnpcny disdcims all liability fcr the instalatkn a1d1ex- service c:I W rob EGuipment ex- parts perfamoo by ethers. Jervis B. Woob Ccmpany re:serves the right to revise. update, ex- diSC(J1tinue Service Bulletins at any time witro..rt ndice.

http://www.jervisbwebb.com/PartsService/Service8ulletins.aspx http:www.duboischemicals.com Mike Helmers

Mike Helmers r ®

Lubricants Englineered for the Application

WearMaster@ KF 101:·220 High Temperature, High Viscosity. Ashless. Synthetic Conveyor l ube

Wear1~aster KF 101-220 is a unique synthetic lubricant designed to Ilubric.ue bearings. cha ins, slides and gears in indwstrial applications wllere air temperntures often exceed 500°F. They are a5hles5 fl uids and do not containl residue forming solids, In adclitio[1, WearMaster KF 101-220 contains a proprietar:~' polymer viscosity enhancer to make it suitable in applic.1tions like chain on edge conveyor r ider please and wear bars where high E,P. capabil ities and water wcl$h,)ut resistance are requirecl.

Some outstanding WearM.1ster KF 131-220 advantages are:

1. EXCEPTIONAL HIGH TEMPERATURE STABILITY - KF 101-220 is made from polyol esters, This unique feature results . ill a redUCed tendency to form carbon and varnish deposits in high temperature applications.

2. CLEANLlt·JESS - KF 101-220 is a low ash lubricant. This hel~ eliminate the accumulation of solids Ulat create lll.1inten.mce clean-up problems and downtime, 'In tact WearMaster KF 101-"220 is otten credited with helping to clean chains already diltied by inferior lubricants,

3. LOW VOLATILITY - KF 101-220 maintains a liquid lubricating film at elevated temperatures t1ms providing substantially longer lubrication intervals. reduced lubricant cOllsumption. less smol<e and 110

4. ENERGY EFFICIEI'I'T - Because KF 101-220 is a clean, fluid-film lubricant, it will frequently provide significant reductions in equipment energy consumption.

5. BElTER PROTECTION - KF 101-220 is formulated to prQvide excellent protection against wear. rust.

oxidation and corrosion. thus extending. equil>ment life and reducing maintenance costs"

6. OPTIMUM VISCOSITY - KF 101-220 is balanced to provide thorough penetration at lower application teml>eratures 3nd optimum lubrication protection ,in severe applications. Its enhanced high v iSc.osjt~· feature enables it to perform well in chain on edge conveyor rider plates and wear bars .

TYPICAL SPECIFICAT!Ot'IS ISO Viscosity Grade 220 Viscosity ,Index 102 Vis';osit'l SUS ~ 100°F 1038 Viscosity cSt @ 40)( 224 Viscosity SUS @ 210' F '98.5 Viscosity cSt @ 1OO~C 19.9 F1Mh Point. !F Fe). Min 151)4 (318) f=!re P,:lint.'F i~C). Min 680 (3130) Rust inhibit,) .. Yes Anti-weM QdGlitive Yes Color Clear to Amber opeo Lubrication Systems, Inc.

9569 W 40th Street . Fremont, MI 49412 Phone: (231) 924-6160 . Fax (231) 924-6810 www.opcolube.com·info@opcolube.com mailto:www.opcolube.com�info@opcolube.com http:Ilubric.ue Mike Helmers

Bulletin No.: M-640-004

ENGINEERING BULLETIN

SUaJECT: Chain Wear - Unibilt, X-348, X-458 & X-678 Chain

In the past there have been numerous questions regarding the maximum allowable chain "stretch" or wear. The following are some general guidelines on this subject:

I

CONVEYOR CHAIN LENGTHS

Chain Size Nominal Length # of Pitches New Length Recommended Max. Worn Length

Unibilt 240' I 30 243" I 248" (2%)

X-348 120" II, 40 121" ± 1/2" I

125"

X-458 120" 30 121"±1/2" r

125"

X-678 120" 20 121"±1/2" 125"

1. Chain "stretch" is not the same as chain wear. Under load, all conveyor chain stretches similar to a large rubber band. This stretch varies depending on the size of chain and the load. Chain wear is the physical wearing of the bearing surfaces and is an indication of the remaining service life available in the chain.

2. A lightly loaded slow speed conveyor will tolerate worn chain better then a highly loaded high speed conveyor.

3. The drive caterpillar chain should be inspected for wear and replaced if necessary when the conveyor chain is replaced . If the RC-160 cat chain is in good condition, it should be removed and reinstalled so that the opposite cat dog face engages the conveyor chain. Worn cat chain does not work well with new conveyor chain.

4. If new chain is added to a multiple drive conveyor (as part of a system extension for example), the chain should be added in small sections spaced throughout the length of the existing chain. New chain runs slightly slower through a cat drive as compared to worn chain. This slight speed differential can cause substantial chain tension increases if one drive is pulling a long length of worn chain and the other is pulling a long length of new chain.

5. Lubrication of the chain bearing surfaces is the only way to ensure that a conveyor chain will last through a reasonable service life. Even a lightly loaded chain can wear out in a short time if it is not lubricated properly.

If you require further information regarding this bulletin, please call the Farmington Hills Standards department.

D. Dabkowski

BULLETIN NO.: M-640-004

REVIS'ION: 01

DATE: 06-14-96 ENGINEERING APPROVAL

NOTICE: This document, including the design and information disclosed, is the property of and for the exclusive use of the Jervis B. Webb Company and is submitted With the unc;jerstanding that it is not to be reproduced , nor copied in whole or in part, Jenls I. Webb Clmlill nor loaned or otherwise communicated to any third party, nor used in any manner

MATERIAL HANDLING SYSTEMS INTEGRATORSdetrimental to the Jervis B. Webb Company without its express written consent.

Mike Helmers

Caterpillar Drive Unit 300# Chain Pull Capacity

Weight: 300 Ib

• Caterpillar drive unit with 300# chain pull capacity.

Speeds from 1.0 to 40 FPM available with standard 1/2 H.P. motor. Other speeds available with special motors and reducers. Left handed drives are standard.

• Constant speed and variable speed available.

• Includes 1/2 H.P. 1725 R.P.M., 230/460 volt, 3 phase, 60 hertz, TEFC motor, and iii combination chain and belt guard.

~J~ -- 4'6"~·-4'-3--1/-2,-,·~--------:...~~(1 -.--- 0 •• • t

~IOO'~~

l'-+- Fr "O I~ 4-3/4"

.... Chain Travel

• The drive uses an overload torque limiter built into the hub of the caterpillar chain drive sprocket. It is set at 450 Ibs.

• A belt and chain guard is standard and supplied with each drive.

• Uses same caterpillar drive chain as standard 600# capacity drive unit.

• Motor controls (push button, starters, thermal over loads, etc.) are not included.

• AC or DC motors for variable speed at 10-to-1 speed variation availabl1e upon request.

Chain Take-ups

Spring Take-up V20149

A chain take-up is necessary in every Unibilt Enclosed Track system to remove any slack chain that may accumu late in the system. It compensates for chain growth for most temperature changes that would expand or contract the chain and relieves chain tension to uncouple the chain.

Take-ups are avai lable in several styles, however, spring, counterweight, and air are most common.

• The spring take-up V20149 is used for normal conveyor conditions where no temperature extremes are encountered.

Counterweight Take-up V20148 Air Cylinder Operated V20147

The counterweight take-up and air cylinder operated are used when automatic slack chain removal is necessary, generally where oven temperatures elongate the chain during production hours and then cool and contract the chain during off hours.

• All styles of take-ups are self-contained and mounted on a rigid frame, which eliminates binding or twisting and requires no fabricating or welding in the field.

42-1/2"1-1/8" 1----::2:-:1_-,17:/

:::-"--.j ---it;

5'1-1/2" I

2-7/8" -2-3/4"

24" radius

--v·""'''' f----- 48" ____-.j f------ 4'2-15/16" - __....-I

Weig,ht: 146 Ib

Standard radius is 2'-0"; however, smaller radii are available with the use of traction wheels. The standard spread is 4' 0" and a recommended maximum is 10'-0". This dimension should be specified when orderingl. Standard travel is 8" with 24" travel also available. The take-up is normally sus pended by angle bracing welded or bolted to the frame. The 1/2" diameter rods may also be used to hang the unit.

Mike Helmers

· Unibilt Conveyor Components

Chain LoadAttachments A number of load-carrying attachments have been developed to suspend a large variety of carriers and loads from the chain.

The standard attachments illustrated below are those that have the widest usage and are adaptable to almost every type of load. Special attachments can be designed to accommodate special applications.

Standard "H" Attachment V21298 (Capacity 125 Ib, Max. 45° Incline)

3/16" -I'k- 1 ~ 1-1/2"

Weight: 0.5 Ib

The Standard "H" Attachment is the most popular unit for connecting loads to the chain. It engages the load-wheel axle with a scissor like action. The illustrQtions show how the attachment grips the load-wheel axle and is locked in position Iby the load-carrying bolt in the bottom hole and cannot be removed until the bolt is removed.

Rigid "H" Attachment V16975 (Capacity 75 Ib)

11-++-9/16" 15/16" --l+---I

11/32"dia.

holes(2)

Similar to V21298 except this attachment remains per pendicular to the chain. There is also an extra attaching hole 3-1/4" below the bottom of the track.

Capacity is 75 Ib

Load Bar Attachment V9032

Capacity:

250 Ib, Level Sy~ems 200 Ib, Maximum Degree of Incline 30° 175 Ib, Maximum Degree of Incline 45°

\2 i 1" ~

13/32" 0 dia.hole

3/16"dia .hole

1/4"-U'" 1----- 8-1/8" load Bar AttQchment V9032 is suspended from two "H" attachments, thereby increasing the capacity of the load carrier. ("H" attachments must be ordered sepa rately.) 5/16" bolt or hardened rivet not included.

Mike Helmers

Summary of Corrective Actions and Repair Steps Required : Asset # 3322 Booth 61 Carousel ‐ Conveyor System

Item Desciption of Problem Solution Offered in Report Page Number in Report

1 Repair and Align Conveyor Track Yes Page 2, Page 8

2 Add Inspection Port Yes Page 2

3 Add Chain Loading Port Yes Page 3

4 Repair or replace Cat. Drive Yes Page 3

5 Replace Line Lubrication System Yes Pages 3,4,13‐15

6 Clean Conveyor Tube Yes Page 5

7 Conveyor Chain Yes Pages 5, 6

8 Overloading Conveyor Yes Page 7