Spindle Size Selection Chart

Selection Procedure:

1.If not known, determine power and speed requirements from the Design Data section, pages 29-31.2.Locate the speed (RPM) on the chart and follow this line until it intersects the power (kW). 3.Continue up until it crosses the spindle size line. This is the minimum spindle sizerecommended for the power and speed requirements.4.Verify tool overhang, measured from spindle nose, falls within the maximum for the selected spindle. If tool overhang exceeds the limit for the selected spindle, size spindle based on tool overhang.5.Verify that spindle front bearing bore is as large or larger than the bore being machined.

M a x i m u m T o o l O v e r h a n g Note: The maximum RPM noted is based upon grease lubrication and light preload bearings. 6