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Dimensional tolerance

DIAMETER TOLERA

Outside Diameter: De

Inside Diameter: Di

De or Di

Permissible deviation

De                        Di                                   Concentricity

            MM
MM
MM
MM
1
Over 3 to 6
0/-0.12
+0.12/0
0.15
2
Over 6 to 10
0/-0.15
+0.15/0
0.18
3
Over 10 to 18
0/-0.18
+0.18/0
0.22
4
Over 18 to 30
0/-0.21
+0.21/0
0.26
5
Over 30 to 50
0/-0.25
+0.25
0.32
6
Over 50 to 80
0/-0.30
+0.30/0
0.60
7
Over 80 to 120
0/-0.35
+0.35/0
0.70
8
Over 120 to 180
0/-0.40
+0.40/0
0.80
9
Over 180 to 250
0/-0.46
+0.46/0
0.92
10
Over 250 to 315
0/-0.52
+0.52/0
1.04
11
Over 315 to 400
0/-0.57
+0.57/0
1.14
12
Over 400 to 500
0/-0.63
+0.63/0
1.26

1) In reference to Outside Diameter De

THICKNESS TOLERANCE (t)

 

t or t’

MM

Tolerance for t

MM

Group 1

0.2 to 0.6
>0.6 to <1.25

+0.02 / -0.06
+0.03 / -0.09

Group 2

1.25 to 3.8
>3.8 to 6.0

+0.04 / -0.12
+0.05 / -0.15

Group 3

>6.0 to 14.0

+0.10 / -0.10

FREE OVER-ALL HEIGHT (lo) TOLERANCE

 

t [MM]

Tolerance for L0

Group 1

<1.25

+0.10 / -0.05

Group 2

1.25 to 2.0
>2.0 to 3.0
>3.0 to 6.0

+0.15 / -0.08
+0.20 / -0.10
+0.30 / -0.15

Group 3

>6.0 to 14.0

+0.30 / -0.30

SPRING FORCE TOLERANCE

The static load (F) of a single

disc shall be determined for

a disc in the loaded state

using a suitable lubricant. The

pressure plates between which

the disc is compressed must be

hardened ground and polished.

The following deviations apply for normal applications:

 

t[MM]

Tolerances for F at the test length
    lp=lo -0.75 h o 

Group 1

<1.25

+25% / -7.5%

Group 2

 1.25 to 3.0 
>3.0 to 6.0

 +15% / -7.5%
+10% / -5%

Group 3

 >6.0 to 14.0

+5% / -5%

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