21305 Bearing
Spherical roller bearing
- Bore d25 mm
- Outer dia. D62 mm
- Width B17 mm
- Weight≈ 0.25 kg
Heavy loads and misalignment: conveyors, crushers, vibrating screens, mining and marine equipment.
Technical data
| Bearing designation | 21305 |
|---|---|
| Type | Spherical roller bearing |
| Bore d | 25 mm |
| Outer dia. D | 62 mm |
| Width B | 17 mm |
| Weight | ≈ 0.25 kg |
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for 21305
| 21305 E | Reinforced internal design (higher load capacity) |
|---|---|
| 21305 EK | Reinforced internal design (higher load capacity) · Tapered bore, taper 1:12 |
| 21305 CC | Spherical roller internal design (symmetrical rollers, steel cage) |
| 21305 CCK | Spherical roller internal design (symmetrical rollers, steel cage) · Tapered bore, taper 1:12 |
| 21305 CA | Spherical roller internal design (brass cage) |
| 21305 CAK | Spherical roller internal design (brass cage) · Tapered bore, taper 1:12 |
| 21305 CC W33 C3 | CC internal design; lubrication groove and holes in the outer ring (W33) · Radial clearance larger than normal (for higher operating temperatures) |
| 21305 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) |
| 21305 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)
25 × 62 × 7 mm
Seal weight: ≈ 0.023 kg
Other common widths: 25 × 62 × 8 mm, 25 × 62 × 10 mm
The seal's inner diameter matches the shaft (25 mm) and its outer diameter matches the housing bore (62 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 305 · shaft 20 mm
Adapter sleeve H 305: shaft diameter 20 mm, bearing bore 25 mm, width 29 mm. Used with lock nut KM5 and lock washer MB5.
H 305 set weight (incl. lock nut and lock washer): ≈ 0.083 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: 21305 K.
Quote for bearing and sleeve