B 0.5000 / D 1.0000WPB8T Spherical Bearing (Inch)
WPB T Product Overview
WPB8T is a wide-series PTFE-lined spherical bearing with a 0.5000″ bore (B) and 1.0000″ OD (D). Body width (W) = 0.625″, inner race width (T) = 0.505″. Ball diameter = 0.875″. Flat OD (O) = 0.607″. Approximate weight: 0.100 lb.
Rated at 21,400 lb static radial load with ±9.0° misalignment angle. The 52100 bearing steel ball is precision ground, heat treated, and hard chrome plated. The alloy steel race is heat treated, oil coated, and PTFE lined for self-lubricating, maintenance-free operation. The wide-body design provides greater contact area than standard COM series bearings, improving load distribution in suspension links, control arms, and heavy pivot assemblies.
Stainless race + stainless ball: add ‘-SS’ suffix (e.g., WPB8T-SS). Stainless race + steel ball: add ‘-S’ suffix (e.g., WPB8T-S). Staking-groove variant available as WPB-TG series. Standard-width Teflon-lined equivalent is the COM-T series.
WPB T Series — Full Size Range
All available sizes in the WPB T series. Can’t find your size? Contact us for custom dimensions.
| WIDE SERIES PART NO. | B DIA. +0.0000 -0.0005 | D DIA. +0.0000 -0.0005 | W WIDTH +0.000 -0.002 | T WIDTH +0.005 -0.005 | O FLAT DIA. REF. | M CHAMFER REF. | BALL DIA. REF. | a° MIS. ANGLE REF. | STATIC RADIAL LOAD (LBS) | APPROX WEIGHT (LBS) |
|---|---|---|---|---|---|---|---|---|---|---|
| WPB4T | 0.2500 | 0.6250 | 0.437 | 0.327 | 0.300 | 0.022 | 0.531 | 15.0 | 5,500 | 0.031 |
| WPB5T | 0.3125 | 0.6875 | 0.437 | 0.317 | 0.360 | 0.032 | 0.593 | 14.0 | 9,400 | 0.035 |
| WPB6T | 0.3750 | 0.8125 | 0.500 | 0.406 | 0.466 | 0.032 | 0.687 | 8.0 | 13,700 | 0.060 |
| WPB7T | 0.4375 | 0.9375 | 0.562 | 0.442 | 0.537 | 0.032 | 0.781 | 10.0 | 20,700 | 0.080 |
| WPB8T | 0.5000 | 1.0000 | 0.625 | 0.505 | 0.607 | 0.032 | 0.875 | 9.0 | 21,400 | 0.100 |
| WPB9T | 0.5625 | 1.1250 | 0.687 | 0.536 | 0.721 | 0.032 | 1.000 | 10.0 | 26,600 | 0.135 |
| WPB10T | 0.6250 | 1.1875 | 0.750 | 0.567 | 0.752 | 0.032 | 1.062 | 12.0 | 29,000 | 0.160 |
| WPB12T | 0.7500 | 1.3750 | 0.875 | 0.630 | 0.845 | 0.044 | 1.250 | 13.0 | 37,000 | 0.240 |
| WPB14T | 0.8750 | 1.6250 | 0.875 | 0.755 | 0.995 | 0.044 | 1.375 | 6.0 | 65,200 | 0.350 |
| WPB16T | 1.0000 | 2.1250 | 1.375 | 1.005 | 1.269 | 0.044 | 1.875 | 12.0 | 104,000 | 0.970 |
Every Unit Inspected Before Shipment
Raw Material Inspection
Material certifications verified. Composition confirmed by spectrometer before machining begins.
Thread Gauge Inspection
100% go/no-go gauge check on all threaded sections. Zero tolerance on dimensional non-conformance.
Load Capacity Test
Static and dynamic load tests run on representative samples from each production batch.
Dimensional Measurement
CMM verification of critical dimensions — ball diameter, bore, thread pitch, and body length.
Surface Inspection
Visual and tactile inspection for burrs, scratches, surface cracks, and plating defects.
Articulation Test
Misalignment angle and torque measured to confirm liner performance meets specification.
Heat Treatment Verify
Hardness tests confirm proper heat treatment on chromoly steel bodies and bearing balls.
Batch Documentation
Full traceability from raw material heat number to finished part. COC and inspection reports available.
Where WPB T Spherical Bearings Are Used
More from the WPB T Series
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WPB T Frequently Asked Questions
What is WPB-T used for?
WPB-T spherical bearings are used in wide-series articulated joints and linkage positions where PTFE-lined race construction and strong radial support are required.
What makes WPB-T different from standard metal-to-metal spherical bearings?
WPB-T uses a PTFE-lined race and wide-series construction, giving it a different wear and articulation profile from standard metal-to-metal spherical bearings.
What materials are used in WPB-T spherical bearings?
WPB-T uses a 52100 bearing steel ball, precision ground, heat treated, and hard chrome plated, together with an alloy steel race that is heat treated, PTFE lined, and oil coated.
Is there a staking groove version of WPB-T?
Yes. The staking groove version uses the WPB-TG part number series and follows the same wide-series spherical-bearing platform with groove-specific dimensions.
Are stainless options available in WPB-T?
Yes. Add -SS for stainless race and stainless ball, or -S for stainless race with steel ball, for example WPB12T-SS or WPB12T-S.
How do I choose the right WPB-T size?
Start with the required bore, outer diameter, widths, ball size, misalignment angle, and static radial load shown in the size chart, then confirm whether standard, -S, -SS, or WPB-TG configuration is the better fit for the application.