Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM

BS Deep Groove Ceramic Bearings
| Model | d(inch/mm) | D(inch/mm) | B(inch/mm) | Seal | Material |
|---|---|---|---|---|---|
| R4CE | 0.125″/3.175 | 0.3125″/7.938 | 0.1562″/3.969 | Open | 440C+Si₃N₄ |
| R6CE 2RS | 0.1875″/4.763 | 0.4375″/11.113 | 0.1875″/4.763 | 2RS | 440C+Si₃N₄ |
| R8CE ZZ | 0.250″/6.350 | 0.500″/12.700 | 0.1875″/4.763 | ZZ | 440C+Si₃N₄ |
| R10CE | 0.3125″/7.938 | 0.625″/15.875 | 0.2187″/5.556 | Open | 440C+Si₃N₄ |
BS Angular Contact Ceramic Bearings
| Model | d(inch/mm) | D(inch/mm) | B(inch/mm) | Contact Angle | Material |
|---|---|---|---|---|---|
| ACBS01 | 0.500″/12.70 | 1.125″/28.58 | 0.375″/9.53 | 15° | 440C+Si₃N₄ |
| ACBS02 | 0.625″/15.88 | 1.375″/34.93 | 0.4375″/11.11 | 25° | 440C+Si₃N₄ |
BS Thrust Ceramic Bearings
| Model | d(inch/mm) | D(inch/mm) | H(inch/mm) | Type | Material |
|---|---|---|---|---|---|
| TBS01 | 0.250″/6.35 | 0.500″/12.70 | 0.2187″/5.56 | Single-direction | 440C+Si₃N₄ |
| TBS02 | 0.375″/9.53 | 0.750″/19.05 | 0.2812″/7.14 | Single-direction | 440C+Si₃N₄ |
British Standard (BS) ceramic bearings follow UK’s dimensional & precision norms (BS 292, BS 6467), mostly hybrid (440C stainless steel rings + Si₃N₄/ZrO₂ balls); full-ceramic (Si₃N₄/ZrO₂ rings + balls) is available for extreme conditions. They feature inch-series dimensions, high speed, low friction, corrosion resistance, electrical insulation, and non-magnetism. Common types: deep groove, angular contact, self-aligning, thrust; widely used in UK industrial, aerospace, medical, marine, and cycling (BSA) applications.
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