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STANDARD CROSS SECTIONAL TOLERANCES
for outside diameter, inside diameter, wall thickness, width, height and general cross-sectional dimensions of extrusions


TABLE 13


RMA Class

1
High Precision

2
Precision
3
Commercial
Drawing Designations E1 E2 E3
Dimensions(in Millimeters)      

Above

Up To

     
0 1.5 + 0.15
+ 0.25 + 0.40
1.5 2.5 0.20 0.35 0.50
2.5 4.0 0.25 0.40 0.70
4.0 6.3 0.35 0.50 0.80
6.3 10 0.40 0.70 1.00
10 16 0.50 0.80 1.30
16 25 0.70 1.00 1.60
25 40 0.80 1.30 2.00
40 63 1.00 1.60 2.50
63 100 1.30 2.00 3.20
         

RMA Class

1
High Precision

2
Precision
3
Commercial
Drawing Designations E1 E2 E3
Dimensions(in Inches)      

Above

Up To

     
0 0.060 + 0.006 + 0.010 + 0.015
0.060 0.10 0.008 0.014 0.020
0.10 0.16 0.010 0.016 0.027
0.16 0.25 0.014 0.020 0.031
0.25 0.39 0.016 0.027 0.039
0.39 0.63 0.020 0.031 0.051
0.63 0.98 0.027 0.039 0.063
0.98 1.57 0.031 0.051 0.079
1.57 2.48 0.039 0.063 0.098
2.48 3.94 0.051 0.079 0.126


Table 16


RMA Class

1
(Precision)

2
(Commercial)
3
(Non-Critical)
Drawing Designations L1 L2 L3
Length(in Millimeters)      

Above

Up To

     
0 40 + 0.7 + 1.0 + 1.6
40 63 0.80 1.3 2.0
63 100 1.0 1.6 2.5
100 160 1.3 2.0 3.2
160 250 1.6 2.5 4.0
250 400 2.0 3.2 5.0
400 630 2.5 4.0 6.3
630 1000 3.2 5.0 10.0
1000 1600 4.0 6.3 12.5
1600 2500 5.0 10.0 16.0
2500 4000 6.3 12.5 20.0
4000   0.16% 0.32% 0.50%
         
Length(in Inches)      

Above

Up To

     
0 1.6 + 0.03 + 0.04 + 0.06
1.6 2.5 0.03 0.05 0.08
2.5 4.0 0.04 0.06 0.10
4.0 6.3 0.05 0.08 0.13
6.3 10.0 0.06 0.10 0.16
10.0 16.0 0.08 0.13 0.20
16.0 25.0 0.10 0.16 0.25
25.0 40.0 0.13 0.20 0.40
40.0 63.0 0.16 0.25 0.50
63.0 100.0 0.20 0.40 0.63
100.0 160.0 0.25 0.50 0.80
160.0   0.16% 0.32% 0.50%


Table 18


RMA Class

1
(Precision)

2
(Commercial)
3
(Non-Critical)
Drawing Designations S1 S2 S3
Millimeters

Above

Up To

     
Inches      

Above

Up To

     
0 - 10 + 0.13 + 0.25 + 0.28
10 - 16 0.16 0.28 0.32
16 - 25 0.20 0.32 0.36
25 - 40 0.25 0.36 0.40
40 - 63 0.32 0.40 0.45
63 - 100 0.40 0.45 0.50
100 - Over 0.50 0.50 0.53

Table 20


RMA Class

1
(Precision)

2
(Commercial)
3
(Non-Critical)
Drawing Designations EN1 EN2 EN3
Nominal Dimensions(in Millimeters)

Above

Up To

     
0 4 + 0.20 + 0.20 + 0.35
4 6.3 0.20 0.25 0.40
6.3 10 0.25 0.35 0.50
10 16 0.35 0.40 0.70
16 25 0.40 0.50 0.80
25 40 0.50 0.70 1.00
40 63 0.70 0.80 1.30
63 100 0.80 1.00 1.60
100 160 1.00 1.30

2.00

160   0.6% 0.8% 1.2%
Nominal Dimensions(in Inches)      

Above

Up To

     
0 0.16 + 0.008 + 0.008 + 0.014
0.16 0.25 0.008 0.010 0.016
0.25 0.40 0.010 1.014 0.020
0.40 0.63 0.014 0.016 0.028
0.63 1.00 0.016 0.020 0.032
1.00 1.60 0.020 0.028 0.040
1.60 2.50 0.028 0.032 0.051
2.50 4.00 0.032 0.040 0.063
4.00 6.30 0.040 0.051 0.079
6.30   0.6% 0.8% 1.2%

Table 12
SUMMARY OF RMA DRAWING DESIGNATIONS
EXTRUDED RUBBER PRODUCTS

RMA CLASS DIMENSIONAL TOLERANCE TABLE 13 CUT LENGTH TOLERANCE TABLE 15 SPLICED LENGTH TOLERANCE TABLE 18 TABLE 20
1 E1 L1 S1 EN1
2 E2 L2 S2 EN2
3 E3 L3 S3 EN3
4 -- -- -- --

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