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Base-Mount Bearing Unit: Inch, Painted, Iron, Steel, Std Duty, Concentric Locking Collar, 1 1/4 in Bore Dia, 1 11/16 in Center Ht

Item # 977K690

$97.39 Each

Product Specs

Measurement System: Inch
Housing Finish: Painted
Housing Material: Iron
Bearing Material: Steel
Duty Type: Standard Duty
Locking Device: Concentric Locking Collar
Bore Diameter: 1 1⁄4 in
Center Height: 1 11⁄16 in
Overall Length: 6 3⁄8 in
Mount Hole Center-to-Center Length: 4 11⁄16 in
Overall Width: 1 7⁄8 in
Dynamic Load Capacity: 4,380 lb
Maximum Operating Temperature: 225 ° F
Bearing Type: Ball
Application: Material Handling; Material Conveying
Axial Displacement: Non-Expansion Bearing
Base Height: 0.75 in
Base Width: 1.75 in
Bearing Full Designation Number: PB281WAHx1-1/4S
Bearing Insert Number: B280WAHX1-1/4S
Bearing Material Grade: 52100
Bore Shape: Cylindrical
Dynamic Radial Load Capacity: 4,380 lb
Fasteners Included: No
Fasteners Required: Yes
Features: Super Finished Raceways; Anti-Rotation Pins; Air Handling Fit in Housing; Precision Bored Hub Alloy Housing; Higher Strength; Greater Impact Resistance; Nitrile Rubber Seals With Steel Flingers; Prelubricated At Factory With Premium Grease; Wide Inner Race; Noise Tested Resistance
Housing Color: Gray
Housing Series: PB281WAH
Housing Type: Base Mount
Lubrication: Grease
Lubrication Distribution Features: Permanently Lubricated
Maximum Misalignment Angle: 1.5 °
Maximum Speed: 3,500 RPM
Minimum Operating Temperature: -25 ° F
Mount Hole Bolt Size: 1/2"
Mount Hole Size: 9/16 in
Mount Type: Two-Bolt Bolt-Through
Mounting Hardware Included: No
Mounting Hardware Required: Yes
Number of Ball Rows: 1
Overall Height: 3.25 in
Precision Rating: ABEC 1
Ring End-to-Center Width: 0.9375 in
Seal: Flingers
Self-Aligning: Yes
Specifications Met: AFBMA
Static Load Capacity: 2,570 lb
Static Radial Load Capacity: 2,570 lb

Compliance and Restrictions

Country Of Origin

  • China

About Base-Mount Pillow Block Bearing Units

These base-mount pillow block bearings, sometimes known as Plummer blocks, provide support for rotating shafts in applications with light or moderate loads, such as conveying. The base is attached to a horizontal or vertical surface so that the shaft passes through the bearing parallel to the surface. The bearing allows the shaft to rotate smoothly while the base helps support the load on the shaft.

Commonly used in blowers, conveyors, and farm equipment, these bearings can handle greater impacts than other mounted ball bearings because the wider inner race distributes the load over more area.

Ball bearings provide a smoother and lower-friction motion than sleeve bearings.