Unità cuscinetto a sfere021UCT204
SUPPORTO SKF UCT 204/H
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 two set screws on the inner ring, which makes it easy to mount. Units with designation suffix /H feature a 120° angle of separation between the set screws that contributes to a higher stability and a better load balance.
- 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
- 6,500r/min
- Basic static load rating
- 6.55kN
Item details
- Item
- 021UCT204
- Category
- A.08
- Unit of measure
- PZ
Technical specifications
40 specifications · highlighted (yellow border): used as catalog filters
| Shaft diameter | 20mm |
|---|---|
| Housing overall width | 32 |
| 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 | 89 |
| 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 | 7.94 |
| Diameter of head sphere of grease fitting | 6.6 |
| Basic dynamic load rating | 12.7kN |
|---|---|
| Fatigue load limit | 0.28kN |
| Limiting speed | 6,500r/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 | Optional end cover |
| 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 |
| Standout of end cover | 20.5 |
| Thread of grease fitting | 1/4-28 UNF |
| Axial position of the housing thread | 2 |
| Compliance with standard | JIS |
|---|