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igus® inc.

PO BOX 14349

East Providence

RI 02914

+1 800 521 2747
+1 401 438 7270

igus® test method

igus® test method for determining the tolerance of DryLin® linear plain bearings

In order to guarantee the function of a drylin® R linear plain bearing, it is necessary to use the bearings with a defined minimum excess (bearing clearance). The quality control of this item is done with a gage inspection. A certain force is defined to load the gage when the bearing is checked.

Order no. Test force
[lbs]
Øi - Test-
mount
Min. bearing Øi
(gage free)
Max. bearing Øi
(gage hanging)
 
JUM-01/02-10 0.221 12.000 mm 10.030 mm 10.070 mm
JUM-01/02-12 0.309 14.000 mm 12.030 mm 12.070 mm
JUM-01/02-16 0.419 18.000 mm 16.030 mm 16.070 mm
JUM-01/02-20 0.595 23.000 mm 20.030 mm 20.070 mm
JUM-01/02-25 0.838 28.000 mm 25.030 mm 25.070 mm
JUM-01/02-30 1.081 34.000 mm 30.040 mm 30.085 mm
JUM-01/02-40 1.588 44.000 mm 40.040 mm 40.085 mm
JUM-01/02-50 2.205 55.000 mm 50.050 mm 50.100 mm
 
JUI-01-06 0.221 0.4684 inch 0.3768 inch 0.3776 inch
JUI-01-08 0.309 0.5934 inch 0.5016 inch 0.5024 inch
JUI-01-10 0.419 0.7184 inch 0.6268 inch 0.6276 inch
JUI-01-12 0.595 0.8747 inch 0.7516 inch 0.7524 inch
JUI-01-16 0.838 1.1247 inch 1.0016 inch 1.0024 inch
JUI-01-20 1.081 1.4058 inch 1.2520 inch 1.2531 inch
JUI-01-24 1.588 1.6558 inch 1.5020 inch 1.5031 inch
JUI-01-32 2.205 2.1870 inch 2.0024 inch 2.0039 inch
 
RJM-01-08 0.221 16.000 mm 8.025 mm 8.061 mm
RJM-01-10 0.221 19.000 mm 10.025 mm 10.061 mm
RJM-01-12 0.309 22.000 mm 12.032 mm 12.075 mm
RJM-01-16 0.419 26.000 mm 16.032 mm 16.075 mm
RJM-01-20 0.595 32.000 mm 20.040 mm 20.092 mm
RJM-01-25 0.838 40.000 mm 25.040 mm 25.092 mm
RJM-01-30 1.081 47.000 mm 30.040 mm 30.092 mm
RJM-01-40 1.588 62.000 mm 40.050 mm 40.112 mm
RJM-01-50 2.205 75.000 mm 50.050 mm 50.112 mm
 
RJI-01-06 0.221 0.6250 inch 0.3762 inch 0.3776 inch
RJI-01-08 0.309 0.8750 inch 0.5013 inch 0.5030 inch
RJI-01-10 0.419 1.1250 inch 0.6265 inch 0.6282 inch
RJI-01-12 0.595 1.2500 inch 0.7516 inch 0.7536 inch
RJI-01-16 0.838 1.5625 inch 1.0035 inch 1.0056 inch
RJI-01-20 1.081 2.0000 inch 1.2520 inch 1.2544 inch
RJI-01-24 1.588 2.3750 inch 1.5020 inch 1.5044 inch
RJI-01-32 2.205 3.0000 inch 2.0024 inch 2.0053 inch

When using a bearing (e.g. JUM/RJM) in combination with an adapter/housing (e.g. RJUM, OJUM, RGA), the manufacturing tolerance of the housing bore adds up to the above-listed minimum clearance (Normal case: H7). The sum of the these two values then shows the maximum possible bearing tolerance. Bearing of the dimensional series "Japan-Std." (JUJ) is checked according to the same criteria of the JUM bearing.