Industry Standard Specification English-Chinese Comparison - General Machinery (4)

1.Accuracy grade Accuracy grade: refers to the maximum allowable difference between the actual and the nominal values of a part or size. 2.Spherical tolerance Spherical tolerance: refers to the allowable gap between a part and its ideal spherical shape. 3.Flatness tolerance Flatness tolerance......

1.Accuracy grade

Accuracy grade: refers to the maximum allowable difference between the actual and the nominal values of a part or size.

2.Spherical tolerance

Spherical tolerance: refers to the allowable gap between a part and its ideal spherical shape.

3.Flatness tolerance

Flatness tolerance: refers to the allowable gap between a part and its ideal flat surface.

4.Taper tolerance

Taper tolerance: refers to the allowable gap between a part and its ideal tapered shape.

5.Angular tolerance

Angular tolerance: refers to the allowable gap between a part and its ideal angular shape.

6.Position tolerance

Position tolerance: refers to the allowable gap between a part and its ideal centered position.

7.Rotation tolerance

Rotation tolerance: refers to the allowable gap between a part and its ideal rotational position.

8.Straightness tolerance

Straightness tolerance: refers to the allowable circular shape variation of a part along its axis.

9.Perpendicularity tolerance

Perpendicularity tolerance: refers to the allowable variation between a part and its ideal perpendicular direction.

10.Parallelism tolerance

Parallelism tolerance: refers to the allowable variation between a part and its ideal parallel direction.

11.Cylindricity tolerance

Cylindricity tolerance: refers to the allowable circular shape variation of a part along a given axis.

12.Roundness tolerance

Roundness tolerance: refers to the allowable variation between a part and its ideal circular shape.

13.Runout tolerance

Runout tolerance: refers to the allowable variation between a part and its ideal runout position.

14.Surface roughness

Surface roughness: refers to the allowable variation between a part and its ideal smooth surface.

15.Weld dimension and tolerance

Weld dimension and tolerance: refers to the allowable gap between a weld and its ideal shape and size.

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