Spindle Speeds, Belt Tension Adjustment

	I	Cast Tab
Spring
Assembly	/_	))_
Feed Shaf<	_	)
	Lock'Nuts

3Check operation of Return Spring for proper tension and full return

4Nuts must be tightened before use Be very careful; the nuts hold Spring Assembly in position and should NOT be tightened flush against Spring Assembly A small gap is necessary for proper operation of Spindle Housing Lock the two nuts together using separate wrenches and make sure Spindle Housing moves freely up and down

Spindle Speeds

Your Radial Drill Press has a 1725 RPM motor with five spin- dle speeds available through a pulley/belt drive The various

PulleyCover

Butterfly Set Screw

SPnNDLE SPEED CHART

SPINDLEMOTOR

spindle speeds are required for different materials, different types and sizes of drills, and different cutting tools

Refer to the V-belt placement illustration on this page fo_ the five available spindle speeds Maximum speed is obtained when V-belt is on largest step of pulley at motor end and smallest step of pulley at spindle end

Changing Speeds

_ WARNING: DISCONNECT RADIAL DRILL PRESS FROM

POWER SOURCE BEFORE CHANGING SPEEDS,

1 Open Pulley Cover (REF 48)

2Position V-belt (REF 73) on desired steps of Spindle Pulley (REF 19) and Motor Pulley (REF 71) When posi- tioning V-belt, always start by moving the end of the belt that will go from a larger step to a smaller step first

3A chart (REF 51) of drill speeds and pulley steps is pro- vided below and inside Pulley Cover for convenience

Belt Tension Adjustment

NOTE: The Radial Drill Press is shipped with the V-beltinstalled, Check V-belt adjustment for proper tension before use.

1, Open Pulley Cover (REF 48)

2Loosen belt tension Butterfly Set Screw (REF 36) located on right side of Cover Mount (REF 75)

3_ Select speed for drilling operation by referring to Speed Chart (REF 51) inside Pulley Cover or on bottom of page Move V-belt to correct position for desired speed

4Push motor towards rear of machine until V-belt sides are straight between pulleys