The Bearing Unit,ball, cataloged under National Stock Number 3130-01-345-0668, 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 22 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 | 3130-01-345-0668 |
| Primary Part Number | PS2-3/4 |
| Item Name | Bearing Unit,ball |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Altra Industrial Motion Corp. |
| Status | ACTIVE |
| Seal Type | LABYRINTH |
| Lubrication Fitting Type | SELF LUBRICATED |
| Assembly Overall Length | 0.781 INCHES NOMINAL IN |
| Internal Fit-Up Designation | STANDARD |
| Flange Thickness | 0.166 INCHES NOMINAL IN |
| Mounting Hole Type | SQUARE |
| Rotating Element Locking Method | DIRECT |
| Seal Location | BOTH ENDS |
| Block Type | FIXED |
| Style Designator | FLANGE BLOCK |
| Overall Outside Diameter | 3.562 INCHES NOMINAL IN |
| Mounting Hole Width | 0.344 INCHES NOMINAL IN |
| Alignment Type | SELF-ALIGNING |
| Rolling Element Groove Quantity | 1 |
| Bolt Circle Diameter | 2.812 INCHES NOMINAL IN |
| Shaft End Type | OPEN |
| Bore Diameter | 0.7500 INCHES NOMINAL IN |
| Material | STEEL HOUSING |
| Material | STEEL BEARING |
| Housing Length | 0.406 INCHES NOMINAL IN |
| Housing Diameter | 2.625 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 |
| Part Number | Manufacturer |
|---|---|
| PS2-3/4 PRIMARY | Altra Industrial Motion Corp. (USA) |
| 64512-PS2 3/4 | Altra Industrial Motion Corp. (USA) |
NSN 3130-01-345-0668 is a Bearing Unit,ball, manufactured by Altra Industrial Motion Corp., classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-345-0668 has 2 manufacturer part numbers on file: PS2-3/4 (Altra Industrial Motion Corp.), 64512-PS2 3/4 (Altra Industrial Motion Corp.).
Key specifications for PS2-3/4: Seal Type: LABYRINTH; Lubrication Fitting Type: SELF LUBRICATED; Assembly Overall Length: 0.781 INCHES NOMINAL IN; Internal Fit-Up Designation: STANDARD. 22 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.