Specifiable Dimensional Tolerances

When uploading 3D CAD data, you can specify any dimensional tolerances for parts where dimensions and tolerances are not displayed.
The minimum specifiable tolerance range for tolerances depends on the combination of the part shape.
Depending on other settings, in-range precision may not be covered by the service.

Fit Tolerances

The fit tolerances that can be set for lathe machining and secondary machining are as follows.

Type of Machining	Fit Tolerances
Lathe	Metal: Grade IT6 or above
MC (Secondary Machining)	Metal: Grade IT7 or above

The following tolerances can be specified for the total length and the length of the individual parts.

[mm]

Metal	Full Length (L) and Length (ℓ)
Metal	Example of Minimum Tolerance	Range
L,ℓ ≦ 200 *	±0.02	0.04
200 ＜L,ℓ ≦ 500	±0.05	0.1
500 ＜ L,ℓ	±0.2	0.4

*The range that can be set will change for the following thin plates.

Metal		Full Length (L) and Length (ℓ)
Metal		Example of Minimum Tolerance	Range
L ≦ 5	150＜D	±0.1	0.2
L＜10	50 ≦ D	±0.1	0.2

Resin	Full Length (L) and Length (ℓ)
Resin	Example of Minimum Tolerance	Range
L,ℓ ≦ 100	±0.05	0.1
100＜ L,ℓ ≦ 200	±0.1	0.2
200＜ L,ℓ ≦ 300	±0.2	0.4

The tolerances that can be set for the outer diameter are as follows.

[mm]

Tolerances for Groove Outer Diameter (D)	Minimum Tolerance	Range
Uniform	±0.05	0.1

Groove Width (w)	Minimum Tolerance	Range
Uniform	±0.05	0.1

*Tolerance between inner and outer diameter surfaces cannot be added.

The tolerances that can be set for the inner diameter are as follows.

[mm]

Tolerances for Groove Inner Diameter (d)	Minimum Tolerance	Range
Tolerances for Groove Inner Diameter (d)	±0.05	0.1

Groove Width (w)	Minimum Tolerance	Range
Groove Width (w)	±0.07	0.14

Position Dimensions (ℓ)	Minimum Tolerance	Range
Position Dimensions (ℓ)	±0.1	0.2

The tolerances that can be set between each shape element are as follows.

[mm]

No	Shape Element	(2) Outer Diameter Side	(3) External Groove Side	(4) Pocket Surface	(5) Inner Diameter Bottom	(6) Internal Groove Side
(1)	Both End Faces	0.04～	0.1～	0.1～	0.04～	0.2～
(2)	Outer Diameter Side	0.04～		0.1～	–	–
(3)	External Groove Side	–		0.2～	–	–
(4)	Pocket Surface	–	–	0.1～	–	–
(5)	Inner Diameter Bottom	–	–	–	0.04～	–
(6)	Internal Groove Side	–	–	–	–	0.2～

[mm]

No	Shape Element	(5)Precision Hole Centre	(6)Straight Hole Centre	(7)Tapped Hole Centre	(8)Insert Hole Centre	(9)Countersunk Hole Centre	(10)Slotted Hole/Keyway
(1)	Both End Faces/Central Axis	0.1～	0.2～	0.2～	0.2～	0.2～	0.2～
(2)	Outer Diameter Side	0.1～
(3)	External Groove Side	0.2～
(4)	Pocket Surface	0.1～
(5)	Precision Hole Centre	0.1～
(6)	Straight Hole Centre	–
(7)	Tapped Hole Centre	–	–
(8)	Insert Hole Centre	–	–
(9)	Countersunk Hole Centre	–	–	–	–
(10)	Slotted Hole/Keyway	–	–	–	–	–

Tip

- (1) Holes on the same circumference are called P.C.D. (Pitch Circle Diameter). Cross bores are not supported.
- (2) P.C.D is recognized even with different hole types.
- (3) P.C.D. is recognised regardless of whether the positions of the holes are equally or unequally divided.
- (4) It is possible to add diagonal dimensions that indicate the distance between the holes and the P.C.D.

P.C.D. Equally divided	P.C.D. Unequally divided	The distance between P.C.D. holes.

Caution

The P.C.D. recognition is an additional and reference information in meviy for turning parts.
If you need to specify the tolerance between holes, please select the “Add tolerance” icon and specify the tolerance for the target position.

Tip

The positional relationship of holes on both end faces of the reference model in the figure below is a general tolerance.

Notes

3D Model Color Schemes
If a colour scheme for an unsupported shape is displayed, automatic quotation is not available.