PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40631Bearing,roller,cylindrical

Skf Usa Inc. · NSN 3110-01-191-6804 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-01-191-6804 — this item is cataloged by the U.S. Government under National Stock Number 3110-01-191-6804. Primary manufacturer part number: 40631.
Features
  • Bearing,roller,cylindrical — FSC 3110
  • Internal Clearance: 0.0018 INCHES MINIMUM RADIAL AND 0.0028 INCHES MAXIMUM RADIAL IN
  • Style Designator: SINGLE ROW, TWO-DIRECTION LOCATING, TWO LIP INNER RING, TWO LIP OUTER RING, SEPARABLE
  • Material: STEEL COMP E52100 ROLLER
  • Material: STEEL COMP E52100 OUTER RING
  • Material: STEEL COMP E52100 INNER RING
  • Material: COPPER ALLOY CAGE
  • Locating Feature: NONLOCATING
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp E52100 Roller construction
General Description

The Bearing,roller,cylindrical, cataloged under National Stock Number 3110-01-191-6804, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Skf Usa Inc.. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-01-191-6804
Primary Part Number40631
Item NameBearing,roller,cylindrical
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSkf Usa Inc.
StatusACTIVE
Internal Clearance0.0018 INCHES MINIMUM RADIAL AND 0.0028 INCHES MAXIMUM RADIAL IN
Style DesignatorSINGLE ROW, TWO-DIRECTION LOCATING, TWO LIP INNER RING, TWO LIP OUTER RING, SEPARABLE
MaterialSTEEL COMP E52100 ROLLER
MaterialSTEEL COMP E52100 OUTER RING
MaterialSTEEL COMP E52100 INNER RING
MaterialCOPPER ALLOY CAGE
Locating FeatureNONLOCATING
Retainer Fabrication MethodMACHINED
Surface FinishGROUND
Standard Tolerance DesignationRBEC NO.1
Bore ShapeSTRAIGHT
Overall Outside Diameter2.4409 INCHES NOMINAL IN
Bore Diameter1.5748 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5305-00-045-8338 INTERCHANGEABLE
Screw,machine
5935-00-058-49021024429 INTERCHANGEABLE
Connector,plug,electrical
Lockheed Martin Corporation Div Rms - Mitchel Field
5950-00-153-5745640268 INTERCHANGEABLE
Transformer,audio Frequency
Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc
3020-00-270-836440631 INTERCHANGEABLE
Gear,helical
L3harris Technologies, Inc Div Space & Airborne Systems
5120-00-293-3480 INTERCHANGEABLE
Pliers
4820-00-383-4667 INTERCHANGEABLE
Valve,check
5990-00-822-83504063-11 INTERCHANGEABLE
Resolver,electrical
Moog Inc.
5950-00-930-4702SM-C-583189 INTERCHANGEABLE
Reactor
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6680-01-098-968040631 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
6515-01-594-0871040 631 INTERCHANGEABLE
Terminal,special Purpose
Midmark Corporation Dba Midmark Corp
Cross-Reference Index
Part NumberManufacturer
MR1908D Skf Usa Inc. (USA)
40631 Hamilton Sundstrand Corporation (USA)
MR1908D2 Skf Usa Inc. (USA)
40631-2 Hamilton Sundstrand Corporation (USA)
40631 PRIMARY Skf Usa Inc. (USA)
40631-1 Hamilton Sundstrand Corporation (USA)
458504 Skf Usa Inc. (USA)
Related Parts
5305-00-045-8338INTERCHANGEABLE
SCREW,MACHINE
5935-00-058-4902INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
1024429
5950-00-153-5745INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
640268
3020-00-270-8364INTERCHANGEABLE
GEAR,HELICAL
40631
5120-00-293-3480INTERCHANGEABLE
PLIERS
4820-00-383-4667INTERCHANGEABLE
VALVE,CHECK
5990-00-822-8350INTERCHANGEABLE
RESOLVER,ELECTRICAL
4063-11
5950-00-930-4702INTERCHANGEABLE
REACTOR
SM-C-583189
6680-01-098-9680INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
40631
6515-01-594-0871INTERCHANGEABLE
TERMINAL,SPECIAL PURPOSE
040 631

Frequently Asked Questions

What is NSN 3110-01-191-6804?

NSN 3110-01-191-6804 is a Bearing,roller,cylindrical, manufactured by Skf Usa Inc., classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-01-191-6804?

NSN 3110-01-191-6804 has 7 cross-referenced part numbers: MR1908D (Skf Usa Inc.), 40631 (Hamilton Sundstrand Corporation), MR1908D2 (Skf Usa Inc.), 40631-2 (Hamilton Sundstrand Corporation), 40631 (Skf Usa Inc.) and 2 more.

What NSN replaces 3110-01-191-6804?

There are 10 known substitutes for 3110-01-191-6804: 5305-00-045-8338, 5935-00-058-4902, 5950-00-153-5745 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40631?

Key specifications for 40631: Internal Clearance: 0.0018 INCHES MINIMUM RADIAL AND 0.0028 INCHES MAXIMUM RADIAL IN; Style Designator: SINGLE ROW, TWO-DIRECTION LOCATING, TWO LIP INNER RING, TWO LIP OUTER RING, SEPARABLE; Material: STEEL COMP E52100 ROLLER; Material: STEEL COMP E52100 OUTER RING. 15 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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