UCP 207-20
Pillow block ball bearing unit with extended inner ring and set screw locking, cast iron, Japanese standardsPillow (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 strong and stiff, and 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
- Designed for a constant and alternating rotation
- Ready to mount
- Lubricated and sealed bearing
- Quick locking onto the shaft
- Cost-effective
Description
| Compliance with standard | JIS |
| Purpose specific | For material handling applications |
| Material, housing | Cast iron |
| Sealing, bearing | Seal and flinger on both sides |
| Sealing type, bearing | Contact, standard |
| Sealing, unit | Without |
| Coating | Without |
Dimensions
| d | 31.75 mm | Bore diameter |
|---|---|---|
| d1 | ≈ 46.8 mm | Shoulder diameter of inner ring |
| A | 46 mm | Base width |
| A1 | 28 mm | Top width |
| B | 42.9 mm | Width of inner ring |
| B4 | 6.5 mm | Distance from locking device side face to thread centre |
| H | 47.6 mm | Height of spherical seat centre |
| H1 | 18.5 mm | Foot height |
| H2 | 93.5 mm | Overall height |
| J | 127 mm | Distance between attachment bolts |
| J | max. 131 mm | Distance between attachment bolts |
| J | min. 123 mm | Distance between attachment bolts |
| L | 166.5 mm | Overall length |
| N | 17 mm | Diameter of attachment bolt hole |
| N1 | 21 mm | Length of attachment bolt hole |
| s1 | 25.4 mm | Distance from locking device side face to raceway centre |
| RG | 1/4-28 UNF | Housing thread for the grease fitting |
|---|---|---|
| R1 | 3.5 mm | Axial position of the housing thread |
| Rα | 45 ° | Angular position of the housing thread |
| DN | 6.6 mm | Diameter of head sphere of grease fitting |
|---|---|---|
| SWN | 7.94 mm | Hexagonal key size for the grease fitting |
| GN | 1/4-28 UNF | Thread of grease fitting |
Calculation data
| Basic dynamic load rating | C | 25.5 kN |
|---|---|---|
| Basic static load rating | C0 | 15.3 kN |
| Fatigue load limit | Pu | 0.655 kN |
| Limiting speed | 4 300 r/min | |
Limiting speed with shaft tolerance h6 |
Mass
| Mass bearing unit | 1.55 kg |
Mounting information
| Set screw | G2 | 5/16-24 UNF |
|---|---|---|
| Hexagonal key size for set screw | 4.02 mm | |
| Recommended tightening torque for set screw | 6.5 N·m | |
| Recommended diameter for attachment bolts, mm | G | 14 mm |
| Recommended diameter for attachment bolts, inch | G | 0.5625 in |
