CNC Machining Tolerances and Standards
With a wide range of CNC machines, we are able to provide standard tolerance CNC machined parts with the most economical price and super precision machined parts for high-end products. When working with 3ERP, we guarantee all parts will be made according to your specification. If 2D drawings are not available, you can also indicate with ISO 2678.
Standards
CNC Milling
CNC Turning
Maximum Part Size
CNC Milling4000×1500×600 mm
157.5×59.1×23.6 in.
157.5×59.1×23.6 in.
CNC Turning200×500 mm
7.9×19.7 in.
7.9×19.7 in.
Minimum Part Size
CNC Milling4×4 mm
0.1×0.1 in.
0.1×0.1 in.
CNC Turning2×2 mm
0.079×0.079 in.
0.079×0.079 in.
Minimum Feature Size
CNC MillingΦ 0.50 mm
Φ 0.00197 in.
Φ 0.00197 in.
CNC TurningΦ 0.50 mm
Φ 0.00197 in.
Φ 0.00197 in.
Standard Tolerances
CNC MillingΦ 0.50 mm
Φ 0.00197 in.
Φ 0.00197 in.
CNC TurningΦ 0.50 mm
Φ 0.00197 in.
Φ 0.00197 in.
Linear Dimension
CNC Milling+/- 0.025 mm
+/- 0.001 in.
+/- 0.001 in.
CNC Turning+/- 0.025 mm
+/- 0.001 in.
+/- 0.001 in.
Hole Diameters (Not Reamed)
CNC Milling+/- 0.025 mm
+/- 0.001 in.
+/- 0.001 in.
CNC Turning+/- 0.025 mm
+/- 0.001 in.
+/- 0.001 in.
Shaft Diameters
CNC Milling+/- 0.025 mm
+/- 0.001 in.
+/- 0.001 in.
CNC Turning+/- 0.025 mm
+/- 0.001 in.
+/- 0.001 in.
Edge Condition
*Sharp corner will be removed in the form of a chamfer or radius. The size of the chamfer, or resulting radii, must be indicated on the drawing.
Threads and Tapped Holes
CNC MillingDiameter: Φ 1.5-5 mm, depth: 3×diameter
Diameter: Φ 5 mm or more, depth: 4-6×diameter
Diameter: Φ 5 mm or more, depth: 4-6×diameter
CNC TurningDiameter: Φ 1.5-5 mm, depth: 3×diameter
Diameter: Φ 5 mm or more, depth: 4-6×diameter
Diameter: Φ 5 mm or more, depth: 4-6×diameter
*3erp can produce threads of any specification and size required by our customers.
Text
CNC MillingMinimum width of 0.5 mm,
depth of 0.1 mm
3erp can use CNC engraving or laser carving to create standard text based on customers’ requirements.
depth of 0.1 mm
3erp can use CNC engraving or laser carving to create standard text based on customers’ requirements.
CNC Turning3erp can use laser marking to create standard text for CNC turned parts.
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into production today
into production today
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