JISキー寸法公差表 (JIS B 1301-1996)
Machine key dimensions and tolerance
Unit: mm
| 尺寸代號b x h | 適用軸徑 | 尺寸 | ||||
|---|---|---|---|---|---|---|
| b 基本尺寸 | 容許公差(h9) | h 基本尺寸 | 容許公差 | Ｃ／Ｒ | ||
| 2x2 | 6~8 | 2 | 0 -0.025 | 2 | 0 -0.025 | 0.16~0.25 |
| 3x3 | 8~10 | 3 | 3 | |||
| 4x4 | 10~12 | 4 | 0 -0.030 | 4 | 0 -0.030 |
|
| 5x5 | 12~17 | 5 | 5 | 0.25~0.40 | ||
| 6x6 | 17~22 | 6 | 6 | |||
| 8x7 | 22~30 | 8 | 0 -0.036 | 7 | 0 -0.090 |
|
| 10x8 | 30~38 | 10 | 8 | 0.40~0.60 | ||
| 12x8 | 38~44 | 12 | 0 -0.043 | 8 | ||
| 14x9 | 44~50 | 14 | 9 | |||
| 16x10 | 50~58 | 16 | 10 | |||
| 18x11 | 58~65 | 18 | 11 | 0 -0.110 |
||
| 20x12 | 65~75 | 20 | 0 -0.052 | 12 | 0.60~0.80 | |
| 22x14 | 75~85 | 22 | 14 | |||
| 25x14 | 85~95 | 25 | 14 | |||
| 28x16 | 95~110 | 28 | 16 | |||
| 32x18 | 110~130 | 32 | 0 -0.062 | 18 | ||
| b1, b2 基準尺寸 | 緊配型 | 一般型 | r1、r2 | t1 | t2 | |||
|---|---|---|---|---|---|---|---|---|
| b1, b2 公差(P9) | b1 公差(N9) | b2 公差(Js9) | 基本尺寸 | 公差 | 基本尺寸 | 公差 | ||
| 2 | -0.006 -0.031 | -0.004 -0.029 | ±0.0125 | 0.08~0.16 | 1.2 | +0.1 0 | 1.0 | +0.1 0 |
| 3 | 1.8 | 1.4 | ||||||
| 4 | -0.012 -0.042 | 0 -0.030 | ±0.0150 | 2.5 | 1.8 | |||
| 5 | 0.16~0.25 | 3.0 | 2.3 | |||||
| 6 | 3.5 | 2.8 | ||||||
| 8 | -0.015 -0.051 | 0 -0.036 | ±0.0180 | 4.0 | +0.2 0 | 3.3 | +0.2 0 |
|
| 10 | 0.25~0.40 | 5.0 | 3.3 | |||||
| 12 | -0.018 -0.061 | 0 -0.043 | ±0.0215 | 5.0 | 3.3 | |||
| 14 | 5.5 | 3.8 | ||||||
| 16 | 6.0 | 4.3 | ||||||
| 18 | 7.0 | 4.4 | ||||||
| 20 | -0.022 -0.074 | 0 -0.052 | ± 0.0260 | 0.40~0.60 | 7.5 | 4.9 | ||
| 22 | 9.0 | 5.4 | ||||||
| 25 | 9.0 | 5.4 | ||||||
| 28 | 10.0 | 6.4 | ||||||
| 32 | -0.026 -0.088 | 0 -0.062 | ±0.0310 | 11.0 | 7.4 | |||