Unità cuscinetto a sfere021SYV55WF
SUPPORTO SKF SY 55 WF (RASE)
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 intended for use in applications where the direction of rotation is constant. It has an extended inner ring on both sides and is locked onto the shaft by an eccentric locking collar, making it easy to mount.
- Strong
- Ready to mount
- Lubricated and sealed bearing
- Designed for rotation in one direction
- Accommodate static initial misalignment
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
- 021SYV55WF
- Category
- A.08
- Unit of measure
- PZ
Technical specifications
53 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 | 43.6 |
| Diameter of attachment bolt hole | 18 |
| Overall length | 219 |
| Distance from locking device side face to thread centre | 7.9 |
| Overall bearing width | 71.4 |
| Bore diameter | 55 |
| Bearing width, total | 71.4 |
| 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 | Eccentric collar |
| 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 | M10x1 |
| Sealing type, bearing | Contact, standard |
| Purpose specific | For material handling applications, For air handling applications |
| Relubrication hole | With |
| Sealing, bearing | Seal and flinger on both sides |
| Fastening bolt hole type | Plain |
| Standout of end cover | 37.5 |
| Thread of grease fitting | 1/4-28 SAE-LT |
| Axial offset of dowel pins | 21 |
| Axial position of the housing thread | 4.5 |
| UNSPSC code | 31171536 |
|---|---|
| EClass code | 23-05-08-02 |
| Compliance with standard | ISO |