| RMA Class | 1 High Precision | 2 Precision | 3 Commerical | |
|---|---|---|---|---|
| Drawing Designation | 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 | 0.40 | 0.70 | 1.00 |
| 10.0 | 16.0 | 0.50 | 0.80 | 1.30 |
| 16.0 | 25.0 | 0.70 | 1.00 | 1.60 |
| 25.0 | 40.0 | 0.80 | 1.30 | 2.00 |
| 40.0 | 63.0 | 1.00 | 1.60 | 2.50 |
| 63.0 | 100.0 | 1.30 | 2.00 | 3.20 |
RMA TOLERANCE TABLE FOR EXTRUDED CROSS-SECTIONAL PARTS
Here below outline RMA tolerance table for extruded cross-sectional rubber profiles. It helps customer and manufacturer to identify and understand critical dimensional requirement, it’s achievability and cost associated with it. The closer tolerance demand very tight control during manufacturing process which incur higher cost. When you need close tolerance please specify it in drawing or mention it in quote request.
Tolerances for outside diameters (O.D.), inside diameters (I.D.), wall thickness, width, height, and general cross sectional dimensions or extrusions.
| RMA Class | 1 High Precision | 2 Precision | 3 Commerical | |
|---|---|---|---|---|
| Drawing Designation | E1 | E2 | E3 | |
| Dimensions ( in Inches) | ||||
| Above | Up to | |||
| 0.00 | 0.06 | 0.006 | 0.010 | 0.015 |
| 0.06 | 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 |
RMA TOLERANCE TABLE FOR CUT TO LENGTH UNSPLICED EXTRUSION
Here below find RMA tolerance guide table for cut to length unspliced extrusion requirement. Due to rubber stretchablity and compressiblity property long length measuring of extrusion profile is very difficult. Also temperature plays key role in stretchibility property of rubber so period of conditioning at room temperature must be granted before measurement for length are taken.
Table 16 – Cut Length Tolerance Table for Unspliced Extrusion
| RMA Class | 1 Precision | 2 Commerical | 3 Non-Critical | |
|---|---|---|---|---|
| Drawing Designation | L1 | L2 | L3 | |
| Length ( in Millimeters) | ||||
| Above | Up to | |||
| 0 | 40 | 0.7 | 1.0 | 1.6 |
| 40 | 63 | 0.8 | 1.3 | 2.0 |
| 63 | 100 | 1.0 | 1.6 | 2.5 |
| 100 | 160 | 1.3 | 2.0 | 3.0 |
| 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% |
| RMA Class | 1 Precision | 2 Commerical | 3 Non-Critical | |
|---|---|---|---|---|
| Drawing Designation | L1 | L2 | L3 | |
| 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% |