ZIBOO
ZIBOO NTN 21311 K Spherical Roller Bearing 55x120x29mm
Spherical roller bearing with 55 mm bore, 120 mm outer diameter and 29 mm width
- Spherical roller design handles heavy radial and axial loads
- Tapered bore (suffix K) allows easy mounting on adapter sleeves
- Precise 55 mm bore, 120 mm outer diameter, 29 mm width fits standard housings
- NTN manufacturing ensures reliable performance in demanding applications
NTN 21311 K Spherical Roller Bearing
The NTN 21311 K is a spherical roller bearing with a 55 mm bore, 120 mm outer diameter and 29 mm width. It suits electricians and maintenance teams who need to replace worn bearings in motors, gearboxes or conveyor rollers where misalignment occurs.
Tapered bore limits direct mounting
The K suffix marks a 1:12 tapered bore that requires an adapter sleeve or withdrawal sleeve for shaft location. Without the correct sleeve the bearing cannot be secured, so buyers who need a straight bore or who lack sleeve tooling should choose a different variant.
Highlights
- Spherical roller design handles heavy radial and axial loads
- Tapered bore (suffix K) allows easy mounting on adapter sleeves
- Precise 55 mm bore, 120 mm outer diameter, 29 mm width fits standard housings
- NTN manufacturing ensures reliable performance in demanding applications
Specifications
| Brand | ZIBOO |
|---|---|
| Model | NTN 21311 K |
Questions about this item
Which size of the ZIBOO NTN 21311 K bearing matches my shaft and housing?
The bearing has a 55 mm bore, 120 mm outside diameter and 29 mm width, so choose it when those three dimensions fit your application.
What does the 21311 K designation tell me about performance in a machine?
It identifies a spherical roller bearing with a 1:12 tapered bore for adapter-sleeve mounting, suited to heavy radial loads and moderate axial loads in either direction.
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