The Bearing Unit,ball, cataloged under National Stock Number 3130-01-312-3434, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Altra Industrial Motion Corp.. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-01-312-3434 |
| Primary Part Number | 64612 |
| Item Name | Bearing Unit,ball |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Altra Industrial Motion Corp. |
| Status | ACTIVE |
| Seal Type | LABYRINTH |
| Lubrication Fitting Type | HYDRAULIC |
| Assembly Overall Length | 2.1875 INCHES NOMINAL IN |
| Internal Fit-Up Designation | STANDARD |
| Flange Thickness | 0.9375 INCHES NOMINAL IN |
| Mounting Hole Type | ROUND, UNTHREADED |
| Rotating Element Locking Method | DIRECT |
| Seal Location | BOTH ENDS |
| Block Type | FIXED |
| Style Designator | FLANGE BLOCK |
| Mounting Hole Diameter | 0.5000 INCHES NOMINAL IN |
| Housing Width | 5.1875 INCHES NOMINAL IN |
| Alignment Type | SELF-ALIGNING |
| Rolling Element Groove Quantity | 1 |
| Bore Diameter | 2.0000 INCHES NOMINAL IN |
| Material | STEEL AND RUBBER SYNTHETIC SEAL |
| Material | IRON HOUSING |
| Housing Length | 2.0937 INCHES NOMINAL IN |
| Lubrication Fitting Angle From Horizontal Centerline | 45.0 DEGREES NOMINAL |
| Center to Center Distance Between Mounting Holes Along Side of a Square | 3.8125 INCHES NOMINAL IN |
| Load Capability Type | RADIAL AND THRUST |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3130-01-312-3434 is a Bearing Unit,ball, manufactured by Altra Industrial Motion Corp., classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-312-3434 has 2 manufacturer part numbers on file: 64612 (Altra Industrial Motion Corp.), MBP-2 (Altra Industrial Motion Corp.).
Key specifications for 64612: Seal Type: LABYRINTH; Lubrication Fitting Type: HYDRAULIC; Assembly Overall Length: 2.1875 INCHES NOMINAL IN; Internal Fit-Up Designation: STANDARD. 21 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.