Find a Service Center
- ISAF Series 4-Bolt Cast Iron Pillow Block
- 3 7/16" Shaft
- 4 1/2" Base to Center
- 11 13/16" - 13 1/8" Bolt Spacing
- Adapter Mounted Spherical Roller Bearing
features
- Interchangeable with SAF style pillow blocks
- Patented adapter mounting system
- Easy installation – no feeler gauges needed
- Easy removal – no torches, sledge hammers or special tools needed
- Up to ±1° misalignment capability
- Seal land on O.D. of inner ring maintains full contact pressure even with misaligned condition
- High capacity double row spherical bearing
| Bolt Hole Spacing | 12 15/32 in |
| Bolt Size | 3/4 in |
| Housing Height | 9 1/4 in |
| Bolt Hole Spacing - Width | 2.375 in |
| Inch/Metric | Inch |
| Base Length | 15 23/64 in |
| Base Height | 1 21/32 in |
| Center of Bearing to Front of Inner Ring | 2 31/64 in |
| Length Through Bore | 4.15625 in |
| Misalignment Range | ±1° |
| Shaft Dia. | 3.4375 in |
| Bolt Hole Spacing Range [Max] | 13 1/8 in |
| Base Width | 4 11/32 in |
| SAF Series | 520 |
| Bolt Holes | 4 |
| Locking Device | Adapter Mounted |
| Mounted Unit Duty | Heavy-Duty |
| Dynamic Load Rating | 65500 lbf |
| Bolt Hole Length | 1 5/8 in |
| RPM [Max] | 2600 rpm |
| Housing Construction | 2 Piece |
| Total Float | 3/8 in |
| Lubrication | Relubricatable |
| Seal Type | Labyrinth Metallic Seals |
| Bolt Hole Spacing Range [Min] | 11 13/16 in |
| Housing Material | Cast Iron |
| Pillow Block Type | Thru-Bolt |
| Bearing Type | Spherical Roller Bearing |
| Bearing Design | Expansion |
| Series | ISAF |
| Static Load Rating [Max] | 81500 lbf |
| Insert Type | Steel Insert |
| Collar O.D. | 5 in |
| End Type | Open End |
| Bearing Insert | 22218 |
| Weight | 65.74 LB |
| EAN or UPC | 782475311194 |
