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8644837 — CAM FOLLOWER,NEEDLE BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

8644837: CAM FOLLOWER,NEEDLE BEARING.

The CAM FOLLOWER,NEEDLE BEARING is a the manufacturer industrial component. Key specifications include material: STEEL STUD, stud_length: 1.2500 INCHES NOMINAL IN, thread_class: 2A A, stud_diameter: 0.7500 INCHES MINIMUM AND 0.7510 INCHES MAXIMUM IN, thread_length: 0.6200 INCHES MINIMUM IN, overall_length: 2.0300 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-285-2815, 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
8644837
NSN: 3110-01-285-2815
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 18894 — AIR ARMAMENT CENTER/ EN (USA)
SPECIFICATIONS
materialSTEEL STUD
stud_length1.2500 INCHES NOMINAL IN
thread_class2A A
seal_quantity2
stud_diameter0.7500 INCHES MINIMUM AND 0.7510 INCHES MAXIMUM IN
thread_length0.6200 INCHES MINIMUM IN
overall_length2.0300 INCHES NOMINAL IN
outer_ring_width0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
special_featuresCROWNED OUTSIDE DIAMETER; HEXAGONAL HOLE IN FACE OF STUD 0.250 IN. DIA,0.12 IN. DEEP MIN IN
style_designatorCAM FOLLOWER
thread_directionRIGHT-HAND
bearing_seal_typeCONTACT
NSN3110-01-285-2815
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 8644837 · 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
•
BEARING SEAL TYPE: CONTACT
•
LUBRICATION MATERIAL: LUBRICANT
•
OUTER RING WIDTH: 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-13924,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE EXPOSED SURFACES AS MOUNTED
•
THREAD LENGTH: 0.6200 INCHES MINIMUM IN
•
STYLE DESIGNATOR: CAM FOLLOWER
•
OVERALL OUTSIDE DIAMETER: 1.2490 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
BEARING SEAL TYPECONTACT
LUBRICATION MATERIALLUBRICANT
OUTER RING WIDTH0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE EXPOSED SURFACES AS MOUNTED
THREAD LENGTH0.6200 INCHES MINIMUM IN
STYLE DESIGNATORCAM FOLLOWER
OVERALL LENGTH2.0300 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER1.2490 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.750 INCHES IN
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 3
CCFH-1 1/4-SBReference document
Same NSN cross-reference
Reference document — Secondary reference
HR-1.25-XBCReference document
Same NSN cross-reference
Reference document — Secondary reference
X8644837Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8644837?
8644837 is a CAM FOLLOWER,NEEDLE BEARING.
What parts can replace 8644837?
There are 3 known substitutes for 8644837: CCFH-1 1/4-SB, HR-1.25-XBC, X8644837. Substitute compatibility should be verified for your specific system.
What is the NSN for 8644837?
8644837 is cataloged in the U.S. Government catalog under NSN 3110-01-285-2815. 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.