Aurora PWB-T & PWB-TG Series Wide Spherical Bearings, PTFE Lined Self-Lubricating, 3/16″ to 3/4″ Bore, Plain or Grumman Groove

Aurora PWB-T & PWB-TG Wide Series Spherical Bearings

Genuine Timken Aurora wide series spherical bearings, PTFE lined and self‑lubricating. The wide series carries a wider ball and race than the narrow PNB series, giving substantially higher static radial load capacity for the same bore — up to 37,000 lb (164.6 kN) on the -12.
Aurora bearings provides the ultimate in strength, durability, and safety. Aurora spherical bearings are unsurpassed in motorsports, aviation, aerospace, marine, or industrial use!

Bulk pricing

Discounts apply automatically in the cart and can be mixed across any combination of sizes and retention types in this listing — plain and grooved, any bore, all count toward the same total.

• 5 – 19 bearings — 5% off
• 20 or more bearings — 10% off

No code needed; the discount is applied at checkout. Building a full car or stocking a shop? Get in touch for volume pricing beyond these tiers.

Construction

• Ball — alloy steel, heat treated, hard chrome plated
• Race — 17-4 PH stainless steel, heat treated, PTFE lined
• PTFE liner — AT 3200, permanently bonded to the race inside diameter and self‑lubricating
• Qualified to SAE‑AS81820 Type A

Typical uses and applications

Wide series spherical bearings are specified wherever a joint must carry high static load through articulation without free play. Common uses include:

• Motorsports — upper and lower wishbones, pushrod and pull rod ends, bellcrank pivots, anti‑roll bar links, steering racks and shock mounts
  • Chassis‑specific fitments
    • Ligier JS F4 uses PWB-8TG in all four upper wishbones (Ligier Gen 1 JSF4 / Crawford F4 (Honda K20 inline‑four cars))
    • PWB-10T is used in all chassis year Van Diemen rear lower wishbones and all lower wishbones for V.D. ’97-current cars and Elan DP08. Houses the upright pin. Often sold with bearing retaining nut 95C0020.
    • Also used in Formula Mazdas and SCCA FE/ FE2
• Experimental aviation and aerospace — control linkages, actuator rod ends and flight control bellcranks
• Robotics and unmanned systems — articulated joints, gimbals and actuator pivots where maintenance access is limited
• Marine and light industrial — steering linkages, hydraulic cylinder ends and pivoting machinery joints

Plain or Grumman groove

The standard bearing (no “G” suffix) is retained with a circlip or snap ring, not supplied. Where the bearing is staked into the housing, choose the Grumman groove version — the G at the end of the part number — which is swaged in place using a wide series swaging tool. The groove does not reduce the static load rating, and circlip installations can use either version.

Specifications

All dimensions and load ratings from Timken/Aurora published data. Both plain and grooved variants share identical dimensions and load ratings — the Grumman groove does not reduce the static load rating.