(1)尺寸规格和允许偏差见图4-66~图4-68和表4-144~表4-146。
表4-144型钢的截面尺寸 (mm)
H1 | H2 | H3 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | M | 6 | |
18U | 99 | 18 | 10 | 122 | 84 | 57 | | | 46.2 | | 7.5 | |
25U | 11O | 26 | 17 | 134 | 92 | 50.8 | | | 45 | 94.1 | 6.6 | |
29U | 124 | 28.5 | 16 | 150.5 | 116 | 44 | 53 | 42 | 30 | 116.6 | 7.2 | 3 |
型号 | | d | R1 | R2 | R3 | Rd | r1 | r2 | r3 | | J9 | |
18U | 2 | 2 | | | 9 | 9 | 8 | 4 | 2 | | | |
25U | 0 | 2.5 | 400 | 400 | 12 | lO | 7 | 2 | | | | |
29U | | | 450 | 185 | 15 | 16 | 7 | 4 | | 40° | 3° | |
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