PartsTable
Technical Data Sheet
Download PDF

1638DC — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

1638DC: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OUTER RING, bore_shape: STRAIGHT, bore_diameter: 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN, overall_width: 0.5575 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-145-3200, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1638DC
NSN: 3110-01-145-3200
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 51588 — RBC BEARINGS INCORPORATED DIV WEST TRENTON DIVISION (USA)
SPECIFICATIONS
materialSTEEL OUTER RING
bore_shapeSTRAIGHT
bore_diameter0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
overall_width0.5575 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN
seal_quantity2
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
bearing_seal_typeCONTACT
lubrication_materialGREASE
overall_outside_diameter1.9994 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN
retainer_fabrication_methodPRESSED
NSN3110-01-145-3200
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1638DC · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
RETAINER FABRICATION METHOD: PRESSED
•
BEARING SEAL TYPE: CONTACT
•
LUBRICATION MATERIAL: GREASE
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 1.9994 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
BEARING SEAL TYPECONTACT
LUBRICATION MATERIALGREASE
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH0.5575 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER1.9994 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
SEAL QUANTITY2
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 2
BR9938Reference document
Same NSN cross-reference
Reference document — Secondary reference
FF-B-171Reference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 1638DC?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1638DC?
1638DC is a BEARING,BALL,ANNULAR.
What parts can replace 1638DC?
There are 2 known substitutes for 1638DC: BR9938, FF-B-171. Substitute compatibility should be verified for your specific system.
What is the NSN for 1638DC?
1638DC is cataloged in the U.S. Government catalog under NSN 3110-01-145-3200. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1638DC

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.