PartsTable
Technical Data Sheet
Download PDF

T139 — SWITCH,RADIO FREQUENCY TRANSMISS

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

T139: SWITCH,RADIO FREQUENCY TRANSMISS.

SWITCH,RADIO FREQUENCY TRANSMISS. Key specifications include material: RUBBER CHLOROPRENE CLASS CR AND RUBBER NEOPRENE AND RUBBER SYNTHETIC OVERALL, cone_width: 1.4240 INCHES NOMINAL IN, bore_diameter: 1.3850 INCHES NOMINAL IN, nominal_width: 1.000 INCHES IN, alignment_type: RIGID, overall_height: 0.6250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0286, 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
T139
NSN: 3110-00-100-0286
NIINs: 001000286, 002938783, 013756312
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 73782 — TOWMOTOR CORP DALLAS PLANT SUB OF CATERPILLAR TRACTOR CO (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR AND RUBBER NEOPRENE AND RUBBER SYNTHETIC OVERALL
cone_width1.4240 INCHES NOMINAL IN
bore_diameter1.3850 INCHES NOMINAL IN
nominal_width1.000 INCHES IN
alignment_typeRIGID
overall_height0.6250 INCHES NOMINAL IN
surface_finishUNGROUND
style_designatorPOSITIVE DRIVE
cone_corner_radius0.1406 INCHES NOMINAL IN
nominal_pitch_length55.875 INCHES IN
nominal_pitch_distance0.375 INCHES IN
drive_type_and_quantity149 TEETH
NSN3110-00-100-0286
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: T139 · 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
•
STYLE DESIGNATOR: NORMAL ANGLE
•
CONE CORNER RADIUS: 0.1406 INCHES NOMINAL IN
•
CONE WIDTH: 1.4240 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 2.8750 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORNORMAL ANGLE
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
CONE WIDTH1.4240 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER2.8750 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 7
16T1161Reference document
Same NSN cross-reference
Reference document — Secondary reference
30097Reference document
Same NSN cross-reference
Reference document — Secondary reference
10026Reference document
Same NSN cross-reference
Reference document — Secondary reference
49499Reference document
Same NSN cross-reference
Reference document — Secondary reference
567Reference document
Same NSN cross-reference
Reference document — Secondary reference
120555Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
Ready to buy T139?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is T139?
T139 is a SWITCH,RADIO FREQUENCY TRANSMISS.
What parts can replace T139?
There are 7 known substitutes for T139: 16T1161, 30097, 10026 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for T139?
T139 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0286. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — T139

✓ 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.