Unità cuscinetto a sfere021UKF212K
SUPPORTO SKF UKF 212 K/H
Unità cuscinetto a sfere
Description
These square flanged ball bearing units are compliant with Japanese Industrial Standards (JIS). They consist of an insert bearing, locked to the shaft with an adapter sleeve, which enables the bearings to operate at higher speeds and run more smoothly. The bearing is mounted in a cast iron housing, which can be bolted to a machine wall or frame. Ball bearing units can accommodate moderate initial misalignment, but normally do not permit axial displacement. The adapter sleeve is not included in the unit and should be ordered separately.
- Resist high levels of contamination
- Designed for high temperatures and speeds
- Accommodate relatively heavy loads
- Cost-effective
Key data
Unità cuscinetto a sfere- Shaft diameter
- 55mm
- Basic dynamic load rating
- 52.7kN
- Fatigue load limit
- 1.53kN
- Limiting speed
- 2,700r/min
- Basic static load rating
- 36kN
- Width, total
- 62.8mm
Item details
- Item
- 021UKF212K
- Category
- A.08
- Unit of measure
- PZ
Technical specifications
49 specifications · highlighted (yellow border): used as catalog filters
| Shaft diameter | 55mm |
|---|---|
| Centre distance between bolt holes | 143 |
| Attachment bolt diameter | 16 |
| Housing overall width | 47.5 |
| Width, total | 62.8mm |
| Outer diameter of inner ring ≈ | 75.64mm |
| Width of inner ring | 42.5mm |
| Overall width | 62.8 |
| Recommended diameter for attachment bolts, inch | 0.625 |
| Recommended diameter for attachment bolts, mm | 16 |
| Distance from locking device side face to raceway centre | 33.7 |
| Diameter of attachment bolt hole | 19 |
| Overall length | 175 |
| Overall bearing width | 42.4 |
| Flange width | 18 |
| Width of housing | 47.5 |
| Bore diameter | 55 |
| Bearing width, total | 42.4 |
| Hexagonal key size for the grease fitting | 11.11 |
| Diameter of head sphere of grease fitting | 6.589 |
| Top external diameter | 140 |
| Basic dynamic load rating | 52.7kN |
|---|---|
| Fatigue load limit | 1.53kN |
| Limiting speed | 2,700r/min |
| Basic static load rating | 36kN |
| Housing type | Flanged |
|---|---|
| Flanged housing type | Square |
| Material, housing | Cast iron |
| Number of bolt holes for fasteners | 4 |
| Retaining feature, inner ring | Adapter sleeve |
| Sealing, unit | Optional end cover |
| Grease fitting | With |
| Unit system | Metric |
| Lubricant | Grease |
| Coating | Without |
| Material, bearing | Bearing steel |
| Bore type | Tapered |
| Sealing type | Contact, standard |
| Rubber seating ring | Without |
| Sealing type, bearing | Contact, standard |
| Purpose specific | For material handling applications |
| Relubrication hole | With |
| Sealing, bearing | Seal and flinger on both sides |
| Fastening bolt hole type | Plain |
| Standout of end cover | 39 |
| Thread of grease fitting | 1/8-27 NPT |
| Axial position of the housing thread | 33 |
| Housing thread for grease fitting | 1/8-27 NPT |
| Compliance with standard | JIS |
|---|