P2B 50M-LF
Pillow block bearing unit with composite or cast metal housingPillow (plummer) block bearing units consisting of an insert bearing mounted in a composite or cast metal housing that can be bolted to a support surface. In addition to being part of a unit, some pillow block housings for insert bearings are available as separate components. The SKF assortment includes units that are compliant with several industrial standards and meet many requirements.
- Ready to mount
- Lubricated and sealed bearings
- Quick locking on the shaft
- Large variety of housing shapes, housing materials, and locking methods
- Concentric locking options for high speeds and low vibration
Description
| Compliance with standard | North American standard |
| 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 | Optional end cover |
| Coating | Without |
Dimensions
| d | 50 mm | Bore diameter |
|---|---|---|
| d1 | ≈ 62.51 mm | Shoulder diameter of inner ring |
| d2 | 72 mm | Outside diameter of locking ring |
| A | 55.6 mm | Base width |
| A1 | 30.7 mm | Top width |
| A5 | 29.5 mm | Standout of end cover |
| B | 37 mm | Width of inner ring |
| B1 | 46.2 mm | Overall bearing width |
| H | 57.15 mm | Height of spherical seat centre |
| H1 | 19.05 mm | Foot height |
| H2 | 115.89 mm | Overall height |
| J | 158.75 mm | Distance between attachment bolts |
| J | max. 165.105 mm | Distance between attachment bolts |
| J | min. 152.395 mm | Distance between attachment bolts |
| L | 206.38 mm | Overall length |
| N | 19.84 mm | Diameter of attachment bolt hole |
| N1 | 22.23 mm | Length of attachment bolt hole |
| s1 | 27.7 mm | Distance from locking device side face to raceway centre |
Values specified for B1 and s1 are approximate and before the set screw is tightened (sleeve and inner ring bore at starting position). | ||
| RG | 1/8-27 NPT | Housing thread for the grease fitting |
|---|---|---|
| R1 | 2.8 mm | Axial position of the housing thread |
| Rα | 45 ° | Angular position of the housing thread |
| DN | 6.579 mm | Diameter of head sphere of grease fitting |
|---|---|---|
| SWN | 11.113 mm | Hexagonal key size for the grease fitting |
| GN | 1/8-27 NPT | Thread of grease fitting |
Calculation data
| Basic dynamic load rating | C | 35.1 kN |
|---|---|---|
| Basic static load rating | C0 | 23.2 kN |
| Fatigue load limit | Pu | 0.98 kN |
| Limiting speed | 4 000 r/min |
Mass
| Mass bearing unit | 2.65 kg |
Mounting information
| Set screw | G2 | M6 |
|---|---|---|
| Hexagonal key size for set screw | 3.05 mm | |
| Recommended tightening torque for set screw | 7.4 N·m | |
| Recommended diameter for attachment bolts, mm | G | 16 mm |
| Recommended diameter for attachment bolts, inch | G | 0.625 in |
