Unità cuscinetto a sfere021TUJ20
SUPPORTO SKF TUJ 20TF - UCT204
Unità cuscinetto a sfere
Description
Take-up ball bearing units, consisting of an insert bearing based on a sealed deep groove ball bearing mounted in a grey cast iron housing. Typically mounted in take-up frames, the unit has an inner ring extended on both sides and is locked by tightening a (set) screw on the inner ring, which makes it easy to mount.
- Designed for an alternating rotation
- Quick and easy to mount onto the shaft
- Accommodate static initial misalignment
- Long service life
- Reduced noise and vibration levels
Key data
Unità cuscinetto a sfere- Shaft diameter
- 20mm
- Basic dynamic load rating
- 12.7kN
- Fatigue load limit
- 0.28kN
- Shoulder diameter inner ring ≈
- 28.2mm
- Limiting speed
- 8,500r/min
- Basic static load rating
- 6.55kN
Item details
- Item
- 021TUJ20
- Category
- A.08
- Unit of measure
- PZ
Technical specifications
41 specifications · highlighted (yellow border): used as catalog filters
| Shaft diameter | 20mm |
|---|---|
| Housing overall width | 34 |
| Shoulder diameter inner ring ≈ | 28.2mm |
| Width of inner ring | 31mm |
| Hexagonal key size for set screw | 3 |
| Distance from locking device side face to raceway centre | 18.3 |
| Diameter of attachment bolt hole | 19 |
| Overall height | 92 |
| Distance from locking device side face to thread centre | 4.5 |
| Bore diameter | 20 |
| Bearing width, total | 31 |
| Hexagonal key size for the grease fitting | 7 |
| Diameter of head sphere of grease fitting | 6.5 |
| Basic dynamic load rating | 12.7kN |
|---|---|
| Fatigue load limit | 0.28kN |
| Limiting speed | 8,500r/min |
| Basic static load rating | 6.55kN |
| Recommended tightening torque for set screw | 4 |
| Housing type | Take-up |
|---|---|
| Material, housing | Cast iron |
| Retaining feature, inner ring | Set screws |
| Sealing, unit | Without |
| Grease fitting | With |
| Unit system | Metric |
| Lubricant | Grease |
| Coating | Without |
| Material, bearing | Bearing steel |
| Bore type | Cylindrical |
| Sealing type | Contact, standard |
| Rubber seating ring | Without |
| Note | Limiting speed with shaft tolerance h6 |
| Set screw | M6x0.75 |
| Sealing type, bearing | Contact, standard |
| Purpose specific | For material handling applications |
| Relubrication hole | With |
| Sealing, bearing | Seal and flinger on both sides |
| Thread of grease fitting | 1/4-28 SAE-LT |
| Axial position of the housing thread | 2.5 |
| UNSPSC code | 31171536 |
|---|---|
| EClass code | 23-05-16-02 |
| Compliance with standard | JIS |