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Technical Data Sheet
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21317-12 — Technical Data Sheet

✓ 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,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: ALUMINUM OR COPPER ALLOY OR STEEL RETAINER, bore_shape: STRAIGHT, bore_diameter: 170.00 MILLIMETERS NOMINAL MM, overall_width: 67.00 MILLIMETERS NOMINAL MM, surface_finish: GROUND, special_features: OIL HOLES AND GROOVE IN OD OF OUTER RING. This part is cataloged in the Federal Logistics Information System under NSN 3110-00-871-0254, 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
21317-12
NSN: 3110-00-871-0254
FSC: 3110
CAGE: 29899 — CALGON CARBON UV TECHNOLOGIES LLC DBA HYDE MARINE (USA)
SPECIFICATIONS
materialALUMINUM OR COPPER ALLOY OR STEEL RETAINER
bore_shapeSTRAIGHT
bore_diameter170.00 MILLIMETERS NOMINAL MM
overall_width67.00 MILLIMETERS NOMINAL MM
surface_finishGROUND
special_featuresOIL HOLES AND GROOVE IN OD OF OUTER RING
style_designatorDOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE
overall_outside_diameter260.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
nondefinitive_spec/std_data6 CLASS AND 264 TYPE AND R00 GRADE
standard_tolerance_designationRBEC NO.1
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES ROLLER
NSN3110-00-871-0254
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 21317-12 · 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
•
STANDARD TOLERANCE DESIGNATION: RBEC NO.1
•
BORE DIAMETER: 170.00 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL COMP E51100 OR STEEL COMP E52100 INNER RING
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES INNER RING
•
NONDEFINITIVE SPEC/STD DATA: 6 CLASS AND 264 TYPE AND R00 GRADE
•
STYLE DESIGNATOR: DOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE
TECHNICAL CHARACTERISTICS
STANDARD TOLERANCE DESIGNATIONRBEC NO.1
BORE DIAMETER170.00 MILLIMETERS NOMINAL MM
MATERIALSTEEL COMP E51100 OR STEEL COMP E52100 INNER RING
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES INNER RING
NONDEFINITIVE SPEC/STD DATA6 CLASS AND 264 TYPE AND R00 GRADE
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES ROLLER
STYLE DESIGNATORDOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE
MATERIALSTEEL COMP E51100 OR STEEL COMP E52100 OUTER RING
MATERIALSTEEL COMP E51100 OR STEEL COMP E52100 ROLLER
INTERNAL FIT-UP DESIGNATIONSTANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
23034InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
22244LBInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MS17133-71InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MS17133InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
010-595-3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
22310CCW33InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21317-12?
21317-12 is a BEARING,ROLLER,SELF-ALIGNING.
What parts can replace 21317-12?
There are 29 known substitutes for 21317-12: 23034, 22244LB, MS17133-71 and 26 more. Substitute compatibility should be verified for your specific system.
Is 21317-12 still available?
21317-12 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026