PartsTable
Technical Data Sheet
Download PDF

BM26 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

BM26: BEARING,ROLLER,TAPERED.

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 OVERALL, cup_width: 0.6250 INCHES NOMINAL IN, cone_width: 0.7710 INCHES NOMINAL IN, bore_diameter: 1.3750 INCHES NOMINAL IN, overall_width: 0.7813 INCHES NOMINAL IN, standout_width: 0.1563 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-5999, 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
BM26
NSN: 3110-00-100-5999
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 55509 — COOPER CAMERON CORP AJAX-SUPERIOR DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.6250 INCHES NOMINAL IN
cone_width0.7710 INCHES NOMINAL IN
bore_diameter1.3750 INCHES NOMINAL IN
overall_width0.7813 INCHES NOMINAL IN
standout_width0.1563 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.0620 INCHES NOMINAL IN
backface_corner_radius0.1250 INCHES NOMINAL IN
overall_outside_diameter2.7170 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-5999
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: BM26 · 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
•
CUP WIDTH: 0.6250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
OVERALL OUTSIDE DIAMETER: 2.7170 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0620 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.1563 INCHES NOMINAL IN
•
CONE WIDTH: 0.7710 INCHES NOMINAL IN
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
CUP WIDTH0.6250 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
OVERALL WIDTH0.7813 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER2.7170 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
CONE CORNER RADIUS0.0620 INCHES NOMINAL IN
STANDOUT WIDTH0.1563 INCHES NOMINAL IN
CONE WIDTH0.7710 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER1.3750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
20880DReference document
Same NSN cross-reference
Reference document — Secondary reference
100515Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
Ready to buy BM26?
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 BM26?
BM26 is a BEARING,ROLLER,TAPERED.
What parts can replace BM26?
There are 2 known substitutes for BM26: 20880D, 100515. Substitute compatibility should be verified for your specific system.
What is the NSN for BM26?
BM26 is cataloged in the U.S. Government catalog under NSN 3110-00-100-5999. 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 — BM26

✓ 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.