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精密 铸件常用公差对照表

Addtime:2009-9-21  From:admin    Count:1497
Castings dimension tolerance value(GB/T6414-1986) (unit:mm)
castings basic dimension tolerance grade CT
more than to 3 4 5 6 7 8 9
3 0.14 0.20 0.28 0.40 0.56 0.80 1.2
3 6 0.16 0.24 0.32 0.48 0.64 0.90 1.3
6 10 0.18 0.26 0.36 0.52 0.74 1.0 1.5
10 16 0.20 0.28 0.38 0.54 0.78 1.1 1.6
16 25 0.22 0.30 0.42 0.58 0.82 1.2 1.7
25 40 0.24 0.32 0.46 0.64 0.90 1.3 1.8
40 63 0.26 0.36 0.50 0.70 1.0 1.4 2.0
63 100 0.28 0.40 0.56 0.78 1.1 1.6 2.2
100 160 0.30 0.44 0.62 0.88 1.2 1.8 2.5
160 250 0.34 0.50 0.70 1.0 1.4 2.0 2.8
250 400 0.40 0.56 0.78 1.1 1.6 2.2 3.2
400 630 0.64 0.90 1.2 1.8 2.6 3.6
630 1000 1.0 1.4 2.0 2.8 4.0

Investment castings in batch dimension tolerance grade
castings material cast steel gray iron nodular cast iron copper alloy light metal alloy nickel base alloy colbalt base alloy
Tolerance HB6103-1986 5~7 4~6 4~6 4~6 4~6 4~6 4~6
GB/T6414-1986 5~7 5~7 5~7 4~6 4~6 5~7 5~7

Investment castings parallelism tolerance value reference table (unit:inch)
Diagram X Casting status Correcting status
0.0625 ±0.003 ±0.003
0.125 ±0.003 ±0.003
0.25 ±0.003 ±0.003
0.5 ±0.005 ±0.004
0.75 ±0.006 ±0.004
1 ±0.007 ±0.005
1.5 ±0.01 ±0.07
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