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7R20X1 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

7R20X1: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 1.2500 INCHES NOMINAL IN, overall_width: 0.5000 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-155-8908, 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
7R20X1
NSN: 3110-00-155-8908
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter1.2500 INCHES NOMINAL IN
overall_width0.5000 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
shield_quantity1
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
overall_outside_diameter2.2500 INCHES NOMINAL IN
internal_fit-up_designationSTANDARD
nondefinitive_spec/std_data115 TYPE AND 00 GRADE
retainer_fabrication_methodPRESSED
NSN3110-00-155-8908
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 7R20X1 · 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
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
SHIELD QUANTITY: 1
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 2.2500 INCHES NOMINAL IN
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
SHIELD QUANTITY1
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH0.5000 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER2.2500 INCHES NOMINAL IN
BORE SHAPESTRAIGHT
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY OVERALL WIDTH,AS MODIFIED BY SHIELD QUANTITY
NONDEFINITIVE SPEC/STD DATA115 TYPE AND 00 GRADE
SUBSTITUTES & CROSS-REFERENCES 7
20BIC10JPReference document
Same NSN cross-reference
Reference document — Secondary reference
FFB171Reference document
Same NSN cross-reference
Reference document — Identification reference
319687-403Reference document
Same NSN cross-reference
Reference document — Secondary reference
177039-91Reference document
Same NSN cross-reference
Reference document — Secondary reference
C20SSReference document
Same NSN cross-reference
Reference document — Secondary reference
7R20Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7R20X1?
7R20X1 is a BEARING,BALL,ANNULAR.
What parts can replace 7R20X1?
There are 7 known substitutes for 7R20X1: 20BIC10JP, FFB171, 319687-403 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7R20X1?
7R20X1 is cataloged in the U.S. Government catalog under NSN 3110-00-155-8908. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.