21307 Bearing
Spherical roller bearing
- Bore d35 mm
- Outer dia. D80 mm
- Width B21 mm
- Weight≈ 0.5 kg
Heavy loads and misalignment: conveyors, crushers, vibrating screens, mining and marine equipment.
Technical data
| Bearing designation | 21307 |
|---|---|
| Type | Spherical roller bearing |
| Bore d | 35 mm |
| Outer dia. D | 80 mm |
| Width B | 21 mm |
| Weight | ≈ 0.5 kg |
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for 21307
| 21307 E | Reinforced internal design (higher load capacity) |
|---|---|
| 21307 EK | Reinforced internal design (higher load capacity) · Tapered bore, taper 1:12 |
| 21307 CC | Spherical roller internal design (symmetrical rollers, steel cage) |
| 21307 CCK | Spherical roller internal design (symmetrical rollers, steel cage) · Tapered bore, taper 1:12 |
| 21307 CA | Spherical roller internal design (brass cage) |
| 21307 CAK | Spherical roller internal design (brass cage) · Tapered bore, taper 1:12 |
| 21307 CC W33 C3 | CC internal design; lubrication groove and holes in the outer ring (W33) · Radial clearance larger than normal (for higher operating temperatures) |
| 21307 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) |
| 21307 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)
35 × 80 × 10 mm
Seal weight: ≈ 0.044 kg
Other common widths: 35 × 80 × 8 mm, 35 × 80 × 12 mm
The seal's inner diameter matches the shaft (35 mm) and its outer diameter matches the housing bore (80 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 307 · shaft 30 mm
Adapter sleeve H 307: shaft diameter 30 mm, bearing bore 35 mm, width 35 mm. Used with lock nut KM7 and lock washer MB7.
H 307 set weight (incl. lock nut and lock washer): ≈ 0.15 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: 21307 K.
Quote for bearing and sleeve