PartsTable
Technical Data Sheet
BB21770 ✓ 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,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 0.7590 INCHES MINIMUM AND 0.7610 INCHES MAXIMUM IN, overall_width: 0.9373 INCHES MINIMUM AND 0.9423 INCHES MAXIMUM IN, alignment_type: RIGID, style_designator: NON-SEPARABLE, WITH ROLLER RETAINER, HARDENED AND GROUND, overall_outside_diameter: 1.2480 INCHES MINIMUM AND 1.2490 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-183-7505, 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
BB21770
NSN: 3110-00-183-7505
FSC: 3110
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter0.7590 INCHES MINIMUM AND 0.7610 INCHES MAXIMUM IN
overall_width0.9373 INCHES MINIMUM AND 0.9423 INCHES MAXIMUM IN
alignment_typeRIGID
special_featuresCLOSED END; RETAINING WASHER AT OPEN END SIDE; OD UNDERCUT AT OPEN END; SLOT 0.3750 IN. W BY 0.0700 IN. DEEP IN FACE OF BEARING AT CLOSED END SIDE IN
style_designatorNON-SEPARABLE, WITH ROLLER RETAINER, HARDENED AND GROUND
overall_outside_diameter1.2480 INCHES MINIMUM AND 1.2490 INCHES MAXIMUM IN
NSN3110-00-183-7505
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: BB21770 · 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
BORE DIAMETER: 0.7590 INCHES MINIMUM AND 0.7610 INCHES MAXIMUM IN
ALIGNMENT TYPE: RIGID
MATERIAL: STEEL OVERALL
STYLE DESIGNATOR: NON-SEPARABLE, WITH ROLLER RETAINER, HARDENED AND GROUND
OVERALL OUTSIDE DIAMETER: 1.2480 INCHES MINIMUM AND 1.2490 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESCLOSED END; RETAINING WASHER AT OPEN END SIDE; OD UNDERCUT AT OPEN END; SLOT 0.3750 IN. W BY 0.0700 IN. DEEP IN FACE OF BEARING AT CLOSED END SIDE IN
BORE DIAMETER0.7590 INCHES MINIMUM AND 0.7610 INCHES MAXIMUM IN
ALIGNMENT TYPERIGID
OVERALL WIDTH0.9373 INCHES MINIMUM AND 0.9423 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORNON-SEPARABLE, WITH ROLLER RETAINER, HARDENED AND GROUND
OVERALL OUTSIDE DIAMETER1.2480 INCHES MINIMUM AND 1.2490 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
13641Interchangeable
interchangeable cross-reference
interchangeable
ASTM B221Interchangeable
interchangeable cross-reference
interchangeable
60-2046Interchangeable
interchangeable cross-reference
interchangeable
Q22Interchangeable
interchangeable cross-reference
interchangeable
FS1312XInterchangeable
interchangeable cross-reference
interchangeable
4031909-0701Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BB21770?
BB21770 is a BEARING,ROLLER,NEEDLE.
What parts can replace BB21770?
There are 15 known substitutes for BB21770: 13641, ASTM B221, 60-2046 and 12 more. Substitute compatibility should be verified for your specific system.
Is BB21770 still available?
BB21770 is currently cancelled.
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