3120-00-977-3141 ROLLER,LINEAR-ROTARY MOTION Index 5342-00-977-3143 STRAP

National Stock Number:
3120-00-977-3142

Federal Supply Class:
3120

National Item Identification Number:
009773142

Description:
ROLLER,LINEAR-ROTARY MOTION

Detail:
A cylindrical body having a centrally located hole to accommodate a pin or shaft for attachment to a push rod guide, yoke, rocker arm, turntable, or rail. The item provides a rolling contact with the face of a valve stem, or the lobes of a cam ring or camshaft on engines, fuel injection pumps, latches, turntables, parallel bearing surfaces requiring a roller support, and the like. Excludes BEARING, ROLLER, CYLINDRICAL; ROLLER, ELECTRICAL SWITCH; and friction bearings. See also CAM FOLLOWER, NEEDLE BEARING.


Manufacturer Information:
128LM10062-126512NORTHROP GRUMMAN SYSTEMS CORPORATION
128LM10062-179RG9NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
BORE LENGTH0.470 INCHES MINIMUM AND 0.475 INCHES MAXIMUM
BORE INSIDE DIAMETER0.4997 INCHES MINIMUM AND 0.5007 INCHES MAXIMUM
CASEHARDENING INDICATORNOT CASEHARDENED
CHAMFER/RADIUS OF OUTSIDE CORNER0.031 IN. RADIUS
CRITICALITY CODE JUSTIFICATIONBCXD
FACE WIDTH0.408 INCHES MINIMUM AND 0.413 INCHES MAXIMUM
HUB DIAMETER0.687 INCHES NOMINAL
OUTSIDE DIAMETER0.998 INCHES MINIMUM AND 0.999 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALSTEEL COMP E4340
METALLIC HARDNESS RATING39.0 MINIMUM ROCKWELL C AND 42.0 MAXIMUM ROCKWELL C
STYLE DESIGNATORPLAIN, PROTRUDING HUBS


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