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Technical Data Sheet
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91228 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The LEAD,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1141 OVERALL, head_style: HEXAGON, head_height: 0.375 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.750 INCHES MINIMUM IN, overall_length: 1.3750 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-102-4643, 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
91228
NSN: 3120-00-102-4643
FSC: 3120
CAGE: 0BR59 — SIEMENS GOVERNMENT TECHNOLOGIES, INC. DBA SGT DRESSER-RAND DIV SGT DRESSER-RAND (USA)
SPECIFICATIONS
materialSTEEL COMP 1141 OVERALL
head_styleHEXAGON
head_height0.375 INCHES NOMINAL IN
thread_class2A A
thread_length0.750 INCHES MINIMUM IN
overall_length1.3750 INCHES NOMINAL IN
fastener_length3.875 INCHES NOMINAL IN
hardness_rating29.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
special_featuresCOTTER PIN HOLES DRILLED TRANSVERSALLY AT 90 DEGT0380
thread_directionRIGHT-HAND
features_providedUNFINISHED HEAD
width_between_flats1.500 INCHES NOMINAL IN
NSN3120-00-102-4643
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 91228 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BODY INSIDE DIAMETER: 1.0020 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.5938 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.3750 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.0020 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.5938 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
91228Interchangeable
interchangeable cross-reference
interchangeable
2018581Interchangeable
interchangeable cross-reference
interchangeable
T109Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 91228?
91228 is a LEAD,ELECTRICAL.
What parts can replace 91228?
There are 3 known substitutes for 91228: 91228, 2018581, T109. Substitute compatibility should be verified for your specific system.
What is the NSN for 91228?
91228 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-102-4643. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026