4M278BE18 — CAM FOLLOWER,NEEDLE BEARING

✓ Government record, cited

— · TAPERED BEARING

PRODUCT OVERVIEW

4M278BE18: CAM FOLLOWER,NEEDLE BEARING.

The CAM FOLLOWER,NEEDLE BEARING is a the manufacturer industrial component. Key specifications include material: RUBBER POLYESTER URETHANE CLASS AU SEAL, stud_length: 1.0000 INCHES NOMINAL IN, eccentricity: 0.0300 INCHES NOMINAL IN, thread_class: 3A A, stud_diameter: 0.4375 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN, thread_length: 0.5000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-220-0265, 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

4M278BE18

NSN: 3110-01-220-0265
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 3NPS1 — RBC AIRCRAFT PRODUCTS, INC. (USA)

SPECIFICATIONS

material	RUBBER POLYESTER URETHANE CLASS AU SEAL
stud_length	1.0000 INCHES NOMINAL IN
eccentricity	0.0300 INCHES NOMINAL IN
thread_class	3A A
seal_quantity	2
stud_diameter	0.4375 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN
thread_length	0.5000 INCHES NOMINAL IN
alignment_type	RIGID
overall_length	1.6250 INCHES NOMINAL IN
cam_end_diameter	0.6250 INCHES NOMINAL IN
outer_ring_width	0.6200 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
special_features	INTERNAL HEX WRENCHING FLATS,0.250 IN IN
NSN	3110-01-220-0265

COMPONENT DIAGRAM

KEY FEATURES

•

CAM END DIAMETER: 0.6250 INCHES NOMINAL IN

•

BEARING SEAL TYPE: CONTACT

•

OUTER RING WIDTH: 0.6200 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN

•

ECCENTRICITY: 0.0300 INCHES NOMINAL IN

•

THREAD LENGTH: 0.5000 INCHES NOMINAL IN

•

STYLE DESIGNATOR: CAM FOLLOWER, ADJUSTABLE

•

MATERIAL DOCUMENT AND CLASSIFICATION: HYTREL,FSCM 60380 MFR REF SINGLE MATERIAL RESPONSE SEAL

TECHNICAL CHARACTERISTICS

CAM END DIAMETER	0.6250 INCHES NOMINAL IN
BEARING SEAL TYPE	CONTACT
OUTER RING WIDTH	0.6200 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
ECCENTRICITY	0.0300 INCHES NOMINAL IN
THREAD LENGTH	0.5000 INCHES NOMINAL IN
STYLE DESIGNATOR	CAM FOLLOWER, ADJUSTABLE
MATERIAL DOCUMENT AND CLASSIFICATION	HYTREL,FSCM 60380 MFR REF SINGLE MATERIAL RESPONSE SEAL
OVERALL LENGTH	1.6250 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER	1.1240 INCHES MINIMUM AND 1.1250 INCHES MAXIMUM IN
FEATURES PROVIDED	LUBRICATION HOLE AND LUBRICATION GROOVE

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

CRSBE18CPReference document

Same NSN cross-reference

Reference document — Secondary reference

1M2788E18Reference document

Same NSN cross-reference

Reference document — Secondary reference

4M278Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

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 4M278BE18?

4M278BE18 is a CAM FOLLOWER,NEEDLE BEARING.

What parts can replace 4M278BE18?

There are 3 known substitutes for 4M278BE18: CRSBE18CP, 1M2788E18, 4M278. Substitute compatibility should be verified for your specific system.

What is the NSN for 4M278BE18?

4M278BE18 is cataloged in the U.S. Government catalog under NSN 3110-01-220-0265. This indicates validated use in U.S. government and defense supply chains.

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4M278BE18 — CAM FOLLOWER,NEEDLE BEARING

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