
- PB251N Series Normal-Duty Pillow Block
- 2 1/4" Shaft
- 7 7/16" Bolt Centers
- 2 3/4" Center Line to Base
- Setscrew Locking Collar
features
- Molded glass fiber reinforced polyamide retainer
- Grade 10 balls
- Races and balls are 52100 steel, hardened, ground, and honed for quiet operation
- Slotted bolt holes
- Rugged cast iron or Hub-Alloy® housing
- Zone-hardened inner race
- Prelubricated with high quality lithium grease. 1/4-28 Zerk fitting provided to allow for relube
- Choice of narrow or wide inner race, setscrew locking or eccentric collar locking, normal-duty, or medium-duty bearings
- Knurled cup point setscrews at 120° to minimize inner ring distortion
- Recessed housing base to accommodate uneven mounting surfaces
- Spherical outer race to allow up to 1.5° misalignment
- All bearings have single lip Nitrile rubber seals with steel trash guard
- Steel fingers are standard on wide inner race bearings only
Temperature Range [Min] | -25 °F |
Base Width | 2 1/2 in |
Housing Height | 5 9/16 in |
Overall Width | 2 5/8 in |
Locking Device | Setscrew Locking Collar |
Bearing Type | Ball Bearing |
Lubrication | Relubricatable |
Bolt Hole Spacing Range [Min] | 6 3/4 in |
Base Length | 9 5/8 in |
Center of Bearing to Front of Inner Ring | 1.378 in |
Housing Construction | 1 Piece |
Housing Material | Cast Iron - Nickel Plated |
Mounted Unit Duty | Normal-Duty |
Bolt Size | 5/8 in |
Series | PB251N |
Pillow Block Type | Thru-Bolt |
Housing Width | 2 1/2 in |
Misalignment Range | ±1 1/2° |
Bearing Design | Non-Expansion |
Length Through Bore | 1.909 in |
Bearing Insert | B250X2 1/4 |
Insert Type | Steel Insert |
End Type | Open End |
Seal Type | Contact Seals |
Base Height | 1 3/16 in |
Bolt Hole Spacing | 7 7/16 in |
Temperature Range [Max] | 225 °F |
Shaft Dia. | 2.25 in |
Bolt Hole Spacing Range [Max] | 8 1/8 in |
Bolt Holes | 2 |
Collar O.D. | 2.978 in |
Inch/Metric | Inch |
Weight | 11.0 LB |
EAN or UPC | 662798249803 |
