SKF 3309 A-2RS1/C3 double row ball bearing with back-to-back arrangement, two rubber seals, 45 mm bore, C3 clearance, dynamic load 75 kN and static 53 kN, bearing steel, sheet metal cage for high-precision industrial machinery

SKF 3309 A-2RS1/C3 sealed double-row bearing, single unit
✔️ Bore 45 mm, OD 98.7 mm, width 39.7 mm, C3, seals on both sides

The SKF 3309 A-2RS1/C3 is a sealed double-row ball bearing designed for heavy loads in industrial machinery. It serves in gearboxes, conveyors, pumps, and rotating assemblies where reliability and long service life matter.

✅ Arrangement: Back-to-back (O), two-row configuration
✅ Bore: 45 mm (1 7/9 in)
✅ Outer diameter: 98.7 mm (3 8/9 in)
✅ Width: 39.7 mm
✅ Basic dynamic load rating: 75 kN; basic static load rating: 53 kN
✅ Sealing: Seal on both sides, contact type
✅ Cage: Sheet metal
✅ Lubrication: Grease; relubrication: Without
✅ Ring type: One-piece inner and outer rings

💡 What is a sealed ball bearing used for in heavy equipment?

A handy part that supports rotating shafts while sealing out dirt and moisture. - Used to support rotating shafts in conveyors, pumps, and machines
- Handy for dirty environments due to dual seals
- Improves uptime with grease lubrication
- Works with standard housings and inner/outer rings