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- ISAF Series 4-Bolt Cast Iron Pillow Block
- 6 15/16" Shaft
- 7 7/8" Base to Center
- 21 5/8" - 24 3/8" 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
| SAF Series | 538 |
| Pillow Block Type | Thru-Bolt |
| Housing Material | Cast Iron |
| Bolt Hole Spacing Range [Min] | 21 5/8 in |
| Bearing Type | Spherical Roller Bearing |
| RPM [Max] | 1300 rpm |
| Base Height | 3 1/8 in |
| Bolt Hole Length | 2 3/4 in |
| Housing Construction | 2 Piece |
| Collar O.D. | 11 13/32 in |
| Housing Height | 15 1/2 in |
| Bearing Design | Non-Expansion |
| Series | ISAF |
| Base Length | 28 in |
| Bolt Size | 1 1/4 |
| Inch/Metric | Inch |
| Bolt Hole Spacing - Width | 4.5 in |
| Bolt Holes | 4 |
| Static Load Rating [Max] | 375000 lbf |
| Shaft Dia. | 6.9375 in |
| Length Through Bore | 7.39063 in |
| Insert Type | Steel Insert |
| Mounted Unit Duty | Heavy-Duty |
| End Type | Open End |
| Locking Device | Adapter Mounted |
| Misalignment Range | ±1° |
| Seal Type | Labyrinth Metallic Seals |
| Bearing Insert | 22236 |
| Base Width | 7 1/2 in |
| Total Float | 3/8 in |
| Bolt Hole Spacing | 23 in |
| Center of Bearing to Front of Inner Ring | 4 11/32 in |
| Lubrication | Relubricatable |
| Bolt Hole Spacing Range [Max] | 24 3/8 in |
| Dynamic Load Rating | 260000 lbf |
| Weight | 450.0 LB |
| EAN or UPC | 782475223466 |
