Overview
The Koyo LM12749/10 is a high-performance tapered roller bearing set that includes the LM12749 cone and LM12710 cup. Engineered for reliability in light to medium-duty trailer hubs, it is a common outer bearing in Ford SL trailer systems. Manufactured in Japan, this Koyo set delivers excellent radial and thrust load handling, ensuring consistent performance in caravan, boat, and utility trailers.
⚙️ Technical Specifications
| Specification | Details |
|---|---|
| Brand | Koyo (JTEKT) |
| Part Number | LM12749/10 |
| Component | Tapered Roller Bearing (cone + cup) |
| Inner Diameter | 22.00 mm (0.866″) |
| Outer Diameter | 45.24 mm (1.780″) |
| Cone Width | 15.22 mm |
| Cup Width | 13.97 mm |
| Material | Chrome Steel |
| Dynamic Load Rating | ~23.2 kN (approx.) |
| Country of Origin | Japan |
✅ Why Choose This Bearing?
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Matched Koyo cone + cup for precise hub fitment
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Trusted outer bearing for tandem and single axle trailer hubs
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Built to ISO/ANSI standards—OEM-grade quality
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Manufactured in Japan from high-grade chrome steel
🚚 Applications & Use Cases
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Used as outer bearing in Ford SL, and similar hub kits
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Suitable for caravans, utility trailers, and off-road campers
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Frequently paired with L68149/10 as the inner bearing
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