Unità cuscinetto a sfere021SYJ55
SUPPORTO SKF SYJ 55 TF - UCP211
Unità cuscinetto a sfere
Description
Pillow (plummer) block ball bearing units consist of an insert bearing mounted in a cast iron housing that can be bolted to a support surface. This variant is suitable for applications with both constant and alternating directions of rotation. It has an inner ring extended on both sides and is locked onto the shaft by tightening a set screw on the inner ring, making it easy to mount.
- Strong
- Ready to mount
- Designed for a constant and alternating rotation
- Lubricated and sealed bearing
- Quick locking onto the shaft
- Cost-effective
Key data
Unità cuscinetto a sfere- Shaft diameter
- 55mm
- Basic dynamic load rating
- 43.6kN
- Fatigue load limit
- 1.25kN
- Shoulder diameter inner ring ≈
- 69.06mm
- Limiting speed
- 3,600r/min
- Basic static load rating
- 29kN
Item details
- Item
- 021SYJ55
- Category
- A.08
- Unit of measure
- PZ
Technical specifications
51 specifications · highlighted (yellow border): used as catalog filters
| Shaft diameter | 55mm |
|---|---|
| Centre distance between bolt holes | 171.5 |
| Attachment bolt diameter | 16 |
| Housing overall width | 60 |
| Shoulder diameter inner ring ≈ | 69.06mm |
| Width of inner ring | 55.6mm |
| Recommended diameter for attachment bolts, inch | 0.625 |
| Recommended diameter for attachment bolts, mm | 16 |
| Hexagonal key size for set screw | 5 |
| Distance from locking device side face to raceway centre | 33.4 |
| Diameter of attachment bolt hole | 20 |
| Overall length | 219 |
| Distance from locking device side face to thread centre | 9 |
| Bore diameter | 55 |
| Bearing width, total | 55.6 |
| Recommended diameter for dowel pins | 4 |
| Distance of dowel pins | 201 |
| Hexagonal key size for the grease fitting | 7 |
| Diameter of head sphere of grease fitting | 6.5 |
| Base width | 60 |
| Basic dynamic load rating | 43.6kN |
|---|---|
| Fatigue load limit | 1.25kN |
| Limiting speed | 3,600r/min |
| Basic static load rating | 29kN |
| Recommended tightening torque for set screw | 16.5 |
| Housing type | Pillow block, normal base |
|---|---|
| Material, housing | Cast iron |
| Number of bolt holes for fasteners | 2 |
| 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 | M10x1 |
| 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 | 21 |
| Axial position of the housing thread | 5 |
| UNSPSC code | 31171536 |
|---|---|
| EClass code | 23-05-16-02 |
| Compliance with standard | JIS |