21309 Bearing
Spherical roller bearing
- Bore d45 mm
- Outer dia. D100 mm
- Width B25 mm
- Weight≈ 0.92 kg
Heavy loads and misalignment: conveyors, crushers, vibrating screens, mining and marine equipment.
Technical data
| Bearing designation | 21309 |
|---|---|
| Type | Spherical roller bearing |
| Bore d | 45 mm |
| Outer dia. D | 100 mm |
| Width B | 25 mm |
| Weight | ≈ 0.92 kg |
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for 21309
| 21309 E | Reinforced internal design (higher load capacity) |
|---|---|
| 21309 EK | Reinforced internal design (higher load capacity) · Tapered bore, taper 1:12 |
| 21309 CC | Spherical roller internal design (symmetrical rollers, steel cage) |
| 21309 CCK | Spherical roller internal design (symmetrical rollers, steel cage) · Tapered bore, taper 1:12 |
| 21309 CA | Spherical roller internal design (brass cage) |
| 21309 CAK | Spherical roller internal design (brass cage) · Tapered bore, taper 1:12 |
| 21309 CC W33 C3 | CC internal design; lubrication groove and holes in the outer ring (W33) · Radial clearance larger than normal (for higher operating temperatures) |
| 21309 CAK W33 C3 | Spherical roller internal design (brass cage) · Tapered bore, taper 1:12 · Lubrication groove and 3 lubrication holes in the outer ring · Radial clearance larger than normal (for higher operating temperatures) |
| 21309 E C3 | Reinforced internal design (higher load capacity) · Radial clearance larger than normal (for higher operating temperatures) |
Click a designation to open it in the bearing finder. Suffix usage can differ slightly between brands.
Matching seal (radial shaft seal)
45 × 100 × 10 mm
Seal weight: ≈ 0.068 kg
Other common widths: 45 × 100 × 8 mm, 45 × 100 × 12 mm
The seal's inner diameter matches the shaft (45 mm) and its outer diameter matches the housing bore (100 mm); the width depends on the space in the housing. NBR (double lip, TC type) is recommended for general use and FKM (Viton) for high temperatures.
Quote for bearing and sealAll seal sizes and matching bearings →
Matching sleeve
H 309 · shaft 40 mm
Adapter sleeve H 309: shaft diameter 40 mm, bearing bore 45 mm, width 39 mm. Used with lock nut KM9 and lock washer MB9.
H 309 set weight (incl. lock nut and lock washer): ≈ 0.23 kg
Withdrawal sleeve AH 309: shaft diameter 40 mm, width 31 mm.
AH 309 weight: ≈ 0.088 kg
A sleeve mounts a tapered-bore bearing on a plain cylindrical shaft and bridges the difference between the bearing bore and the shaft diameter.
Use with a sleeve requires the tapered-bore version of the bearing: 21309 K.
Quote for bearing and sleeve