Dew needle rollers
Specifications
Loose needle rollers
Dimensions
Outside diameter , mm (in)
Overall length , mm (in)
1.5 to 25 mm
1.5 to 100 mm
Materials
Standard
Alternative
Sae 52100 bearing quality chrome steel
Available on request
Hardness
Standard
Alternative
Hrc 60 to 64
Hrc 45 available on request
Surface finish
Standard , mm (in)
Alternative
Od ground and lapped to surface finish of
0.2 microns ra maximum
Surface finish as low as 0.050 microns ra
Available on request
Tolerance
Out side diameter , mm (in)
Standard
Alternatives
Outside diameter , mm (in)
Standard
Alternatives
+0.000-0.005 (+0.000-0.002) g5
+0.000-0.003 (+0.00000-0.000120) g3
+0.000-0.002 (+0.00000-0.0000.80) g2
+0.000-0.500 (+0.000 -0.020)
+0.00-0.300 (+0.000- 0.012)
+0.00-0.250 (+0.000 û 0.010)
+0.00-0.100 (+0.000-0.004)
Note : closer tolerance length rollers available
Primarily in end ground configurations .
Outside diameter , mm (in):1.5 to 25 mm
Overall length , mm (in): 1.5 to 100 mm
