Detailed description
The Roller Follower is a compact bearing with a high-rigidity shaft and a built-in needle bearing. Most suitable as a guide roller for cam mechanisms and linear motion.
Models
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Model NAST
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A separable type of bearing that combines a thick-wall outer ring, an inner ring and needle rollers equipped with a precision cage. Since the structure is simple, it allows high accuracy to be achieved at low cost.
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Model RNAST
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A bearing that combines a thick-wall outer ring, an inner ring and needle rollers equipped with a precision cage.
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Model NART
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This model is a non-separable type of bearing system whose inner ring is fixed to the side plates. Since the outer ring is spherically machined, it helps reduce a biased load.
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| Model No. | Main dimensions | Basic load rating | |||||
| Inner | Inscribed bore | Outer | B | C | Dynamic rating | Static rating | |
| diameter | diameter | diameter | C | C0 | |||
| di | dr | D | |||||
| mm | mm | mm | mm | mm | kN | kN | |
| RNAST 5 | — | 7 | 16 | — | 7.8 | 2.74 | 2.39 |
| RNAST 6 | — | 10 | 19 | — | 9.8 | 4.12 | 4.55 |
| RNAST 8 | — | 12 | 24 | — | 9.8 | 5.68 | 5.89 |
| RNAST 10 | — | 14 | 30 | — | 11.8 | 9.7 | 9.67 |
| RNAST 12 | — | 16 | 32 | — | 11.8 | 10.4 | 10.9 |
| RNAST 15 | — | 20 | 35 | — | 11.8 | 12.3 | 14.3 |
| RNAST 17 | — | 22 | 40 | — | 15.8 | 17.4 | 20.9 |
| RNAST 20 | — | 25 | 47 | — | 15.8 | 19.2 | 24.5 |
| RNAST 25 | — | 30 | 52 | — | 15.8 | 20.7 | 28.4 |
| RNAST 30 | — | 38 | 62 | — | 19.8 | 30.3 | 45.4 |
| RNAST 35 | — | 42 | 72 | — | 19.8 | 32.2 | 50.6 |
| RNAST 40 | — | 50 | 80 | — | 19.8 | 35.7 | 61.6 |
| RNAST 45 | — | 55 | 85 | — | 19.8 | 37.1 | 66.4 |
| RNAST 50 | — | 60 | 90 | — | 19.8 | 38.7 | 71.8 |








