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Technical Data Sheet
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100031-1 — BEARING UNIT,BALL

✓ Government record, cited
3M · BALL BEARING
PRODUCT OVERVIEW

100031-1: BEARING UNIT,BALL.

The BEARING UNIT,BALL is a 3M industrial component. Key specifications include special_features: KNOB PITCH CHANGE, part_name_assigned_by_controlling_agency: BRACKET. This part is cataloged in the U.S.

Government catalog under NSN 3130-00-289-6843, 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
100031-1
NSN: 3130-00-289-6843
NIINs: 002896843, 014835283, 017260156
FSC: 3130 — Bearings, Mounted
CAGE: 49200 — PROSPERITY A DIV OF AMETEK INC (USA)
SPECIFICATIONS
special_featuresKNOB PITCH CHANGE
part_name_assigned_by_controlling_agencyBRACKET
NSN3130-00-289-6843
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 100031-1 · 3M ⚠ 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
•
SEAL TYPE: LABYRINTH
•
LUBRICATION MATERIAL: GREASE
•
LUBRICATION FITTING TYPE: HYDRAULIC
•
ASSEMBLY OVERALL LENGTH: 1.5000 INCHES NOMINAL IN
•
HOUSING HEIGHT: 2.8125 INCHES NOMINAL IN
•
MOUNTING SLOT LENGTH: 0.6250 INCHES NOMINAL IN
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
MOUNTING HOLE TYPE: SLOTTED
TECHNICAL CHARACTERISTICS
SEAL TYPELABYRINTH
LUBRICATION MATERIALGREASE
LUBRICATION FITTING TYPEHYDRAULIC
ASSEMBLY OVERALL LENGTH1.5000 INCHES NOMINAL IN
HOUSING HEIGHT2.8125 INCHES NOMINAL IN
MOUNTING SLOT LENGTH0.6250 INCHES NOMINAL IN
INTERNAL FIT-UP DESIGNATIONSTANDARD
MOUNTING HOLE TYPESLOTTED
ROTATING ELEMENT LOCKING METHODDIRECT
SEAL LOCATIONBOTH ENDS
SUBSTITUTES & CROSS-REFERENCES 3
NPD-16Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
NPD16WITH1911ALEMITESame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SM100-4BReference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 100031-1?
100031-1 is a BEARING UNIT,BALL manufactured by 3M.
What parts can replace 100031-1?
There are 3 known substitutes for 100031-1: NPD-16, NPD16WITH1911ALEMITE, SM100-4B. Substitute compatibility should be verified for your specific system.
What is the NSN for 100031-1?
100031-1 is cataloged in the U.S. Government catalog under NSN 3130-00-289-6843. 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.