Extra Small Ball Bearings and Miniature Ball Bearings Inch Series
Display units
| Designations | Boundary Dimensions | Basic Load Ratings | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Limiting Speeds | ||||||||||
| d | D | B | r (min.) | Cr | C0r | Grease | Oil (Oil-bath) | |||
| mm | mm | mm | mm | N | N | min-1 | min-1 | |||
| square | R09 | 1.016 | 3.175 | 1.191 | 0.1 | 105 | 25 | 130000 | 150000 | |
| square | R0 | 1.191 | 3.967 | 1.588 | 0.1 | 153 | 35 | 110000 | 130000 | |
| square | R0ZZ | 1.191 | 3.967 | 2.38 | 0.1 | 153 | 35 | 110000 | ||
| square | R1 | 1.397 | 4.762 | 1.984 | 0.1 | 255 | 66 | 90000 | 110000 | |
| square | R1ZZ | 1.397 | 4.762 | 2.779 | 0.1 | 255 | 66 | 90000 | ||
| square | R1-4 | 1.984 | 6.35 | 2.38 | 0.1 | 340 | 108 | 67000 | 80000 | |
| square | R1-4ZZ | 1.984 | 6.35 | 3.571 | 0.1 | 340 | 108 | 67000 | ||
| square | R133 | 2.38 | 4.762 | 1.588 | 0.1 | 208 | 60 | 80000 | 95000 | |
| square | R133ZZS | 2.38 | 4.762 | 2.38 | 0.1 | 159 | 52 | 80000 | ||
| square | R1-5 | 2.38 | 7.938 | 2.779 | 0.15 | 605 | 175 | 60000 | 71000 | |
| square | R1-5ZZ | 2.38 | 7.938 | 3.571 | 0.15 | 605 | 175 | 60000 | ||
| square | R144 | 3.175 | 6.35 | 2.38 | 0.1 | 310 | 95 | 67000 | 80000 | |
| square | R144ZZ | 3.175 | 6.35 | 2.779 | 0.1 | 310 | 95 | 67000 | ||
| square | R2-5 | 3.175 | 7.938 | 2.779 | 0.1 | 615 | 179 | 60000 | 67000 | |
| square | R2-5ZZ | 3.175 | 7.938 | 3.571 | 0.1 | 615 | 179 | 60000 | ||
| square | R2-6 | 3.175 | 9.525 | 2.779 | 0.15 | 705 | 225 | 53000 | 63000 | |
| square | R2-6ZZS | 3.175 | 9.525 | 3.571 | 0.15 | 705 | 225 | 53000 | ||
| square | R2 | 3.175 | 9.525 | 3.967 | 0.3 | 695 | 218 | 56000 | 67000 | |
| square | R2ZZ | 3.175 | 9.525 | 3.967 | 0.3 | 695 | 218 | 56000 | ||
| square | R2A | 3.175 | 12.7 | 4.366 | 0.3 | 705 | 225 | 53000 | 63000 | |
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