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DW 55 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

DW 55: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: RUBBER OVERALL, unit_type: WEDGE, bore_diameter: 0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN, groove_diameter: 0.9014 INCHES NOMINAL IN, inner_ring_width: 0.9325 INCHES MINIMUM AND 0.9375 INCHES MAXIMUM IN, outer_ring_width: 0.8125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-277-0036, 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
DW 55
NSN: 3110-00-277-0036
NIINs: 002770036, 009078277
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
materialRUBBER OVERALL
unit_typeWEDGE
bore_diameter0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
seal_quantity2
groove_diameter0.9014 INCHES NOMINAL IN
inner_ring_width0.9325 INCHES MINIMUM AND 0.9375 INCHES MAXIMUM IN
outer_ring_width0.8125 INCHES NOMINAL IN
special_featuresBLACK OR BROWN; 1 TO 1-3/4" WIDE; 3-3/4 TO 5-1/2" LONG; 1-1/4 TO 2" HIGH TAPERING TO 1/8" HIGH AT THE POINT
style_designatorWEDGE
bearing_seal_typeCONTACT
surface_treatmentCADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
lubrication_materialGREASE
NSN3110-00-277-0036
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: DW 55 · 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: GREASE
•
OUTER RING WIDTH: 0.8125 INCHES NOMINAL IN
•
GROOVE DIAMETER: 0.9014 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SINGLE ROW RIGID, CONCAVE OD INNER RING EXTENDED BOTH SIDES
•
OVERALL OUTSIDE DIAMETER: 1.0050 INCHES MINIMUM AND 1.0150 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
•
SEAL QUANTITY: 2
TECHNICAL CHARACTERISTICS
BEARING SEAL TYPECONTACT
LUBRICATION MATERIALGREASE
OUTER RING WIDTH0.8125 INCHES NOMINAL IN
GROOVE DIAMETER0.9014 INCHES NOMINAL IN
STYLE DESIGNATORSINGLE ROW RIGID, CONCAVE OD INNER RING EXTENDED BOTH SIDES
OVERALL OUTSIDE DIAMETER1.0050 INCHES MINIMUM AND 1.0150 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
SEAL QUANTITY2
BORE DIAMETER0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
MATERIALSTEEL OUTER RING
SUBSTITUTES & CROSS-REFERENCES 5
GD5M28Reference document
Same NSN cross-reference
Reference document — Secondary reference
GD5M28FS160Reference document
Same NSN cross-reference
Reference document — Secondary reference
GD5M28C1FS160Reference document
Same NSN cross-reference
Reference document — Secondary reference
GD5M28C1Reference document
Same NSN cross-reference
Reference document — Secondary reference
GD5M28C1MILG3278Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is DW 55?
DW 55 is a BEARING,BALL,ANNULAR.
What parts can replace DW 55?
There are 5 known substitutes for DW 55: GD5M28, GD5M28FS160, GD5M28C1FS160 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DW 55?
DW 55 is cataloged in the U.S. Government catalog under NSN 3110-00-277-0036. 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.