Cuscinetti orientabili a rulli01121311CK
CUSCINETTO SKF 21311 EK
Cuscinetti orientabili a rulli · 55 × 120 × 29 mm
Description
Spherical roller bearings can accommodate heavy loads in both directions. They are self-aligning and accommodate misalignment and shaft deflections, with virtually no increase in friction or temperature. The design includes features to facilitate relubrication. The bearings can be used in a modular system, including housings, sleeves and nuts. Also available on request with special sized bore and/or outside diameters, suitable for reworked shafts and housings.
- Accommodate misalignment
- High load carrying capacity
- Relubrication features
- Low friction and long service life
- Increased wear resistance
Key data
Cuscinetti orientabili a rulli- Bore diameter
- 55mm
- Outside diameter
- 120mm
- Width
- 29mm
- Basic dynamic load rating
- 159kN
- Basic static load rating
- 166kN
- Limiting speed
- 7,500r/min
Item details
- Item
- 01121311CK
- Category
- A.01.01
- Unit of measure
- PZ
Technical specifications
46 specifications · highlighted (yellow border): used as catalog filters
| Bore diameter | 55mm |
|---|---|
| Outside diameter | 120mm |
| Width | 29mm |
| Radius of fillet (max.) | 2mm |
| Diameter of housing abutment (max.) | 109mm |
| Chamfer dimension (min.) | 2mm |
| Deviation limits of mid-range bore diameter | 0 … 0.03mm |
| Deviation limits of mid-range outside diameter | -0.015 … 0mm |
| Deviation limits of ring width | -0.06 … 0mm |
| Shoulder diameter of inner ring ≈ | 72.7mm |
| Shoulder/recess diameter of outer ring ≈ | 96.2mm |
| Diameter of lubrication hole | 3mm |
| Width of lubrication groove | 6mm |
| Basic dynamic load rating | 159kN |
|---|---|
| Basic static load rating | 166kN |
| Limiting speed | 7,500r/min |
| Reference speed | 5,600r/min |
| Fatigue load limit | 18.6kN |
| Sealing | Without |
|---|---|
| Radial internal clearance | CN |
| Cage | Sheet metal |
| Bore type | Tapered 1:12 |
| Lubricant | None |
| Number of rows | 2 |
| Locating feature, bearing outer ring | Without |
| Relubrication feature | With |
| Performance class | SKF Explorer |
| Deviation limits of tapered slope | 0 … 0.03mm |
| Recommended tightening angle for lock nut | 115° |
| ISO tolerance class for dimensions | Normal |
|---|---|
| ISO tolerance class for geometrical tolerances | P5 |
| Range of section height at outer ring of assembled bearing | 10µm |
| Range of section height at inner ring of assembled bearing | 5µm |
| Tolerance class for run-out | P5 |
| Tolerance class for dimensions | Normal |
| Maximum run-out of inner ring side face to the bore | 8µm |
| Perpendicularity of outer ring outside surface | 4.5µm |
| Maximum initial clearance | 75µm |
| Minimum initial clearance | 55µm |
| Calculation factor | 4.2 |
|---|---|
| Calculation factor | 2.8 |
| Calculation factor | 2.8 |
| Limiting value | 0.24 |
| UNSPSC code | 31171510 |
|---|---|
| EClass code | 23-05-09-11 |
| Indicative carbon footprint for new product | 6.1kg CO2e |