SKF 3218 AC3 Double Row Angular Contact Bearing Built Tough For Back To Back Mounting 90 Millimeter Bore Uncoated Sheet Metal Cage No Outer Ring Locating Feature Heavy Duty 130 kN Dynamic Load 120 kN Static Load

SKF 3218 AC3 Double-Row Angular Bearing, 90mm Bore
✔️ Single bearing, back-to-back mounting, 90 mm bore

The SKF 3218 AC3 is a heavy-duty, double-row angular contact bearing built for back-to-back mounting. With a 90 mm bore and a sheet metal cage, it’s designed to handle substantial radial-axial loads in demanding machinery like presses, conveyors, and back-to-back drivetrains.

✅ Bore diameter: 90 mm (3.54 in)
✅ Outer diameter: 159.5 mm (6 2/7 in)
✅ Width: 52.4 mm (2.06 in)
✅ Basic dynamic load rating: 130 kN
✅ Basic static load rating: 120 kN
✅ Arrangement: Back-to-back (O)
✅ Contact angle: 30°
✅ Number of rows: 2
✅ Cage: Sheet metal
✅ Coating: Without
✅ Sealing: Without
✅ Material: Bearing steel
✅ Ring type: One-piece inner and outer rings
✅ Limiting speed: 3600 r/min
✅ Reference speed: 4300 r/min
✅ ID: 3 5/9 in (90 mm)
✅ OD: 6 2/7 in (159.5 mm)
✅ Pack dimensions: Height 172 mm; Length 172 mm; Width 60 mm

💡 What is a back-to-back mounted double-row angular contact bearing used for in heavy machinery?

These bearings provide robust support for shafts under high radial and axial loads while maintaining precise alignment.

- Handy for high radial and axial loads in compact spaces
- Maintains shaft alignment under load in conveyors, presses, and gearboxes
- Fits 90 mm bore and sheet metal cages for rugged, lightweight setups