PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 31H1
31H1 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,ROLLER,TAPERED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 CONE, cup_width: 1.1250 INCHES NOMINAL IN, cone_width: 1.4240 INCHES NOMINAL IN, bore_diameter: 2.8750 INCHES NOMINAL IN, overall_width: 1.4375 INCHES NOMINAL IN, standout_width: 0.3125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-4210, 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
31H1
NSN: 3110-00-100-4210
FSC: 3110
CAGE: 61465 — GARWOOD/FELLER INC GARWOOD WINCH DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 CONE
cup_width1.1250 INCHES NOMINAL IN
cone_width1.4240 INCHES NOMINAL IN
bore_diameter2.8750 INCHES NOMINAL IN
overall_width1.4375 INCHES NOMINAL IN
standout_width0.3125 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.1250 INCHES NOMINAL IN
overall_outside_diameter5.0000 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
material_document_and_classification66 FED STD 1ST MATERIAL RESPONSE OR QQ-S-624 FED SPEC 2ND MATERIAL RESPONSE CUP
NSN3110-00-100-4210
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 31H1 · 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
•
STANDOUT WIDTH: 0.3125 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 5.0000 INCHES NOMINAL IN
•
BORE DIAMETER: 2.8750 INCHES NOMINAL IN
•
CONE WIDTH: 1.4240 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
•
CUP WIDTH: 1.1250 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
STANDOUT WIDTH0.3125 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER5.0000 INCHES NOMINAL IN
BORE DIAMETER2.8750 INCHES NOMINAL IN
OVERALL WIDTH1.4375 INCHES NOMINAL IN
CONE WIDTH1.4240 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
CUP WIDTH1.1250 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL COMP E52100 OR STEEL COMP 4320 OR STEEL COMP 4620 CUP
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD 1ST MATERIAL RESPONSE OR QQ-S-624 FED SPEC 2ND MATERIAL RESPONSE CUP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
3141Interchangeable
interchangeable cross-reference
interchangeable
Y4638RInterchangeable
interchangeable cross-reference
interchangeable
601ST3Interchangeable
interchangeable cross-reference
interchangeable
H84-1Interchangeable
interchangeable cross-reference
interchangeable
3141CKInterchangeable
interchangeable cross-reference
interchangeable
61009187Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 31H1?
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 31H1?
31H1 is a BEARING,ROLLER,TAPERED.
What parts can replace 31H1?
There are 22 known substitutes for 31H1: 3141, Y4638R, 601ST3 and 19 more. Substitute compatibility should be verified for your specific system.
Is 31H1 still available?
31H1 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 31H1

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026