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4CH — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

4CH: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include handle_type: STRAIGHT, features_provided: NON-RATCHETING, bit_size_and_quantity: CLUTCH HEAD TYPE G BITS SIZE 5/32, 3/16, 1/4 AND 5/16 IN. IN.

This part is cataloged in the U.S. Government catalog under NSN 3110-00-554-5400, 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
4CH
NSN: 3110-00-554-5400
NIINs: 005545400, 007646425, 012107341
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
handle_typeSTRAIGHT
features_providedNON-RATCHETING
component_quantity5
bit_size_and_quantityCLUTCH HEAD TYPE G BITS SIZE 5/32, 3/16, 1/4 AND 5/16 IN. IN
NSN3110-00-554-5400
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 4CH · 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
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 1.6435 INCHES NOMINAL IN
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH10.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER1.6435 INCHES NOMINAL IN
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
BORE DIAMETER20.00 MILLIMETERS NOMINAL MM
SUBSTITUTES & CROSS-REFERENCES 8
EA20504-10Reference document
Same NSN cross-reference
Reference document — Secondary reference
20504-10Reference document
Same NSN cross-reference
Reference document — Secondary reference
30A104Reference document
Same NSN cross-reference
Reference document — Secondary reference
25B109SReference document
Same NSN cross-reference
Reference document — Secondary reference
JH20ABC10Reference document
Same NSN cross-reference
Reference document — Secondary reference
710008Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4CH?
4CH is a BEARING,BALL,ANNULAR.
What parts can replace 4CH?
There are 8 known substitutes for 4CH: EA20504-10, 20504-10, 30A104 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4CH?
4CH is cataloged in the U.S. Government catalog under NSN 3110-00-554-5400. 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.