Unità cuscinetto a sfere021FYJ55KF
SUPPORTO SKF FYJ 55 KF - UKF211
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
- 50mm
- Basic dynamic load rating
- 43.6kN
- Fatigue load limit
- 1.25kN
- Limiting speed
- 3,600r/min
- Basic static load rating
- 29kN
- Width, total
- 57.5mm
Item details
- Item
- 021FYJ55KF
- Category
- A.08
- Unit of measure
- PZ
Technical specifications
54 specifications · highlighted (yellow border): used as catalog filters
| Shaft diameter | 50mm |
|---|---|
| Centre distance between bolt holes | 130 |
| Attachment bolt diameter | 16 |
| Housing overall width | 43 |
| Width, total | 57.5mm |
| Outer diameter of inner ring ≈ | 69.06mm |
| Overall width | 57.5 |
| Recommended diameter for attachment bolts, inch | 0.625 |
| Recommended diameter for attachment bolts, mm | 16 |
| Distance from locking device side face to raceway centre | 32.5 |
| Diameter of attachment bolt hole | 19 |
| Overall length | 162 |
| Diameter of housing centering recess | 150.8 |
| Flange width | 17 |
| Width of housing | 43 |
| Bore diameter | 50 |
| Bearing width, total | 39.9 |
| Recommended diameter for dowel pins | 4 |
| Distance of dowel pins | 148 |
| Hexagonal key size for the grease fitting | 7 |
| Diameter of head sphere of grease fitting | 6.5 |
| Base external diameter | 130 |
| Top external diameter | 130 |
| Basic dynamic load rating | 43.6kN |
|---|---|
| Fatigue load limit | 1.25kN |
| Limiting speed | 3,600r/min |
| Basic static load rating | 29kN |
| 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 | Without |
| 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 |
| Thread of grease fitting | 1/4-28 SAE-LT |
| Axial offset of dowel pins | 45 |
| Axial position of the housing thread | 25 |
| Housing thread for grease fitting | 1/4-28 UNF |
| Depth of centring recess | 3.2 |
| UNSPSC code | 31171536 |
|---|---|
| EClass code | 23-05-16-02 |
| Compliance with standard | JIS |