Tolerance Capabilities for Custom Metal Fabrication and CNC Machining
Please note that these are average tolerances.
Actual results may vary slightly by design/material requirements.
- Material Thickness, single pass rolling
- Formed Wall thickness
- Radial hole location, degrees
- Inside Diameter without expanding
With expanding up to 10” diameter
With expanding 10 – 18” diameter
- Rolled Ring Expanded:
Out of round, free state form, 2.5 in to 4 inches
4 to 6 inches
6 to 10 inches
10 to 13 inches
13 to 16 inches
16 to 19 inches
- Lock Seam:
Out of round, 1 in to 2.5 inches
2.5 in to 4 inches
4 to 6 inches
6 to 10 inches
10 to 13 inches
13 to 16 inches
16 to 19 inches
- Lock Seam:
Perpendicularity, bumped up to 4.5” diameter
Unbumped up to 19” Ø
- Ring length, bumped up to 6.5 Ø
Not bumped 1.5” to 6” diameter
Large ring 6 – 19” diameter
- Axial hole location: from the gaged edge:
Internal punch & button
Within a die set
From CNC axial datum edge
- Unbumped offset axial:
1-6” diameter
6 – 18” diameter
- Base location from ring edge
- Base location radial, degrees
- Weld spot location
- CNC machining tolerances
Length cutoff
Parallelism
Perpendicularity
Internal and external dia turning (rabbets)
Depth of (rabbets)
- 0.008 inches Total Range
- 0.004 inches Total Range
- ±1 degree
- ±0.005 inches
±0.002 inches
±0.004 inches
0.020 Total Range
0.030 Total Range
0.045 Total Range
0.060 Total Range
0.093 Total Range
0.125 Total Range
0.020 Total Range
0.035 Total Range
0.045 Total Range
0.062 Total Range
0.093 Total Range
0.125 Total Range
0.187 Total Range
0.01 Total Range
.060 Total Range
- ±0.005 inches
±0.025 inches
±0.032 inches
±0.015 inches
±0.005 inches
±0.005 inches
0.015 inches Total Range
0.030 inches Total Range
- ±0.02 inches
- ±1 degree
- ±0.125 inches
±.004 inches
.005 Total
.005 Total
+.005
-.005
±.015
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