Sources Sought_Minimum Specifications.pdf

Product Minimum Specifications COLUMBIA Bearing Support Structure (CLB BSS) Fill Rolls

1.0 GENERAL REQUIREMENTS:

The Advanced Propulsor Management Office in the Naval Architecture and Engineering Department of the Naval Surface Warfare Center, Carderock Division (NSWCCD) is responsible for managing the design, production, and delivery of US Navy submarine propulsors. The COLUMBIA Class Submarine (CLB) Propulsor program requires a custom turning roll set. This roll set includes a power rotation roll and a power pitch-adjust idler roll. This roll set will support the manufacturing of CLB Bearing Support Structure (BSS).

2.0 CUSTOM TURNING ROLL SET MINIMUM SPECIFICATIONS:

2.1 POWER ROTATION ROLL:

35,000lb load capacity 35,000 in-lbs turning torque Cantilever wheel design Ø20” composite wheel, 4” width 3.5rpm wheel speed o 0.9rpm rotation speed for a Ø78” vessel Optional variable speed adjustment available upon request 44” fixed wheel pitch Steel riser frame for a wheel centerline elevation of 36.75” Pushbutton pendant control, 15ft cab

2.2 POWER PITCH-ADJUST IDLER ROLL:

35,000lb load capacity Cantilever wheel design Ø20” composite wheel, 4” width 44” nominal wheel pitch with ±10” powered adjustment o 60sec to travel 10”, constant speed Optional variable speed adjustment available upon request Steel riser frame for a wheel centerline elevation of 36.75” Pushbutton pendant control, 15ft cab

3.0 DELIVERY:

The vendor shall deliver the custom turning roll set 12-14 weeks after contract award to the Naval Foundry Propeller Center (NFPC), Philadelphia, PA. 4701 Intrepid Ave, Philadelphia Pennsylvania.