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C-type deep groove ball bearing
Metric Series（Equal cross‑section: 8/13/20 mm）
| Model | d (mm) | D (mm) | B (mm) | Type | Seal Options |
|---|---|---|---|---|---|
| HC2508 | 25 | 41 | 8 | C (Radial) | Open, ZZ, 2RS |
| HC3008 | 30 | 46 | 8 | C (Radial) | Open, ZZ, 2RS |
| HC4013 | 40 | 66 | 13 | C (Radial) | Open, ZZ, 2RS |
| HC5013 | 50 | 76 | 13 | C (Radial) | Open, ZZ, 2RS |
| HC8020 | 80 | 120 | 20 | C (Radial) | Open, ZZ, 2RS |
Imperial Series（Equal cross‑section: 3/16″–1″）
| Model | d (in) | D (in) | B (in) | Type | Seal Options |
|---|---|---|---|---|---|
| RCC1.000 | 1.000 | 1.375 | 0.1875 | C (Radial) | Open, ZZ, 2RS |
| RCC2.000 | 2.000 | 2.500 | 0.250 | C (Radial) | Open, ZZ, 2RS |
| RCC3.000 | 3.000 | 3.625 | 0.3125 | C (Radial) | Open, ZZ, 2RS |
| RCC4.000 | 4.000 | 4.750 | 0.375 | C (Radial) | Open, ZZ, 2RS |
Type C (radial contact) thin‑section bearings are single‑row, equal‑cross‑section deep groove ball bearings with extra‑deep grooves (groove depth ≈25% of ball diameter). Designed for primarily radial loads, they also support moderate bidirectional axial and moment loads. Features: Conrad assembly (eccentric inner ring for ball insertion), low friction, high speed capability, and compact, lightweight construction. Available in open/ZZ/2RS seals, GCr15/440C stainless steel, and ABEC 1–7 precision. Widely used in robot joints, aerospace, medical devices, optics, and precision machinery.
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