Overview
The Koyo 30210JR is a robust, heavy-duty tapered roller bearing set featuring an integrated cone and cup. Engineered for high-load capacity and long service life, it’s commonly used in high-capacity trailer hubs, off-road caravans, and industrial machinery. Manufactured in Japan by Koyo (JTEKT), the 30210JR is known for its precise tolerances, thermal stability, and reliable radial/thrust load performance—ideal for tough Australian towing conditions.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Koyo (JTEKT) |
| Part Number | 30210JR |
| Component | Integrated Tapered Roller Bearing Set |
| Bore Diameter | 50.00 mm |
| Outer Diameter | 90.00 mm |
| Overall Width | 21.75 mm |
| Dynamic Load Rating | ~102.0 kN (approx.) |
| Material | Chrome Steel |
| Country of Origin | Japan |
✅ Why Choose This Bearing?
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High-load tapered bearing suitable for large hubs and axles
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Integrated cone + cup design simplifies installation
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Manufactured to ISO/ANSI precision by Koyo Japan
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Exceptional performance under high radial and axial loads
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Popular in off-road trailers, heavy-duty campers, and industrial axle systems
Applications & Use Cases
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Heavy-duty trailer hubs requiring 50 mm ID bearings
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Off-road camper trailers, tandem 3.5–4.5 t axles
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Suitable for machinery, plant trailers, and agricultural equipment
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Commonly used in custom hub builds with AL-KO 2T Hubs/Discs
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