SOW_FINAL.pdf

Statement of Work

Linear Dual Rail System

I. BACKGROUND INFORMATION

The Security Technologies Group (STG) of the Materials Measurement Laboratory develops metrology and technology to support the needs of the emergency response, law enforcement, and corrections communities. As part of this research, investigators perform ballistics testing of body armor that may be worn in these professions. Ballistics testing utilizes a linear rail system to allow for instruments and targets, such as body armor, to be positioned at a safe distance from researchers so that they can be tested against similar impactful simulations as individuals would experience on the job these fields. Therefore, this procurement directly supports the development of materials used in Body Armor.

II. SPECIFICATIONS

The Contractor shall deliver two each linear dual rail systems with infinite positioning, self-aligning, locking break integrated carriages. The rail and carriage system must allow for future expansion with off the shelf components.

DESCRIPTION/PURPOSE OF ITEM/SERVICE TO BE ACQUIRED:

The linear rail system includes a rail and carriage system used for positioning targets and other instruments. Specifications for rails, carriages, and bearings:

Rails:

1. Vertical load capacity: 4,560 lb. minimum for dual carriage configuration with a maximum spacing of 36” center to center.

2. Chemical corrosion resistant

3. Non-Magnetic

4. Diameter or cross section tolerance: ≤ 0.0002 in.

5. Roundness or cross section variation: ≤ 0.00008 in.

6. Surface Finish: ≤ 8Ra

7. Straightness: ≤ 0.001 in. / Ft.

8. Height from base mounting surface to top of carriage 2.125 in. maximum.

9. Section Lengths:

9a. 72 in. nominal length 9 ea.

9b. 12 in. nominal length 1 ea. to allow the adding of additional carriages at a later date.

10. Butted joints no chamfers

11. Moment Load capacity: 3800 lbs. minimum.

Carriages:

1. Shall be capable of supporting four (4) bearings each

Carriages with brake:

1. Manually operated brake capable of holding 130 lbs. of axial applied load.

2. No axial movement during activation of break.

3. Shall be capable of supporting four (4) bearings each.

Bearings:

1. Self-lubricating Fluoropolymer.

2. Misalignment tolerance of ½ degree minimum in all axis.

III. DELIVERY DATE AND LOCATION

Deliver to National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD

20899 within 60 days after award

IV. DELIVERABLES

Description Quantity Due Date

Linear Guide Dual Rail 55’ 2 60 days after award

Carriages with bearings 6 60 days after award

Carriages with bearings and locking break 6 60 days after award

V. BRAND NAME OR EQUAL

This is a brand name or equal purchase. The Government considers the following part numbers manufactured by Thomson Linear Motion, 203A West Rock Road, Radford, VA 24141 as meeting the specifications cited above:

Rail and Carriage Assembly Part Number:

2DA1200BL-SL x 660in with Y1 = 1.0IN

Comprising of 9 each 72 in. sections and 1 each 12 in. section.

Individual Carriage Part Numbers:

DSRC12SB-FNYB (2DA Size 12 Carriage with FluoroNyliner Bearings)

DSRC12SL-FNYB (2DA12 Size 12 Carriage with Manual Brake and FluoroNyliner Bearings)

Offerors may propose another item but must include with their proposal documentation that demonstrates that it meets the salient characteristics. Documentation must include drawings, diagrams, brochures or other literature that demonstrates these salient characteristics. Failure to provide such documentation will cause the proposal to be unacceptable.