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2-28 — RESISTOR,VARIABLE,WIRE WOUND,PRE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

2-28: RESISTOR,VARIABLE,WIRE WOUND,PRE.

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include width: 10.600 INCHES NOMINAL IN, length: 120.000 FEET NOMINAL FT, plated: NOT PLATED, material: ZINC ALLOY AND COPPER ALLOY OVERALL, end_style: MACHINED HALF LOOP BOTH ENDS, base_style: SPECIAL MINIATURE, ONE AND HALF TURN THREAD. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-144-8882, 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
2-28
NSN: 3110-00-144-8882
NIINs: 001448882, 001464023, 001680582, 002235058, 002551387, 002996982, 003369934, 003671802, 004330680, 004868402, 006884005, 009319049, 010316878, 011012458, 011110811, 011221834, 011400947, 011647353, 012046716, 012746031, 012981496, 013013886, 013019279, 013392411, 013455370, 013773014, 013784295, 013878795, 014201960, 014387391, 016678383, 017135058
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 07385 — THE BIRO MANUFACTURING COMPANY (USA)
SPECIFICATIONS
width10.600 INCHES NOMINAL IN
length120.000 FEET NOMINAL FT
platedNOT PLATED
materialZINC ALLOY AND COPPER ALLOY OVERALL
end_styleMACHINED HALF LOOP BOTH ENDS
base_styleSPECIAL MINIATURE, ONE AND HALF TURN THREAD
bore_shapeSTRAIGHT
bulb_styleB (ARBITRARY DESIGNATION)
plate_typeNEGATIVE OR POSITIVE
usage_formROLL
valve_size5.000 INCHES IN
design_typeCLOSED
NSN3110-00-144-8882
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 2-28 · 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
•
LUBRICATION MATERIAL: GREASE
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
SHIELD QUANTITY: 2
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 32.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
LUBRICATION MATERIALGREASE
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
SHIELD QUANTITY2
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH10.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER32.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
NONDEFINITIVE SPEC/STD DATA111 TYPE AND 3 CLASS AND 00 GRADE
LOAD DIRECTIONRADIAL
SUBSTITUTES & CROSS-REFERENCES 9
SKA1621Reference document
Same NSN cross-reference
Reference document — Secondary reference
AA1-228Reference document
Same NSN cross-reference
Reference document — Secondary reference
22-228Reference document
Same NSN cross-reference
Reference document — Secondary reference
221-183Reference document
Same NSN cross-reference
Reference document — Secondary reference
6013142Reference document
Same NSN cross-reference
Reference document — Secondary reference
012-41012-02Same 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 2-28?
2-28 is a RESISTOR,VARIABLE,WIRE WOUND,PRE.
What parts can replace 2-28?
There are 9 known substitutes for 2-28: SKA1621, AA1-228, 22-228 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2-28?
2-28 is cataloged in the U.S. Government catalog under NSN 3110-00-144-8882. This indicates validated use in U.S. government and defense supply chains.
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