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Operating Instructions
1. Place a pilot pin in the cutter at the shank end. Insert the cutter into the special
arbor, aligning the flats to the set screws on the arbor. Secure the set screws to the
cutter with the supplied hex wrench.
2. Position the machine on a clean, dry, ferrous surface at least 1/2" thick. Switch on
the magnet.
3. Cutting fluid must be used at all times to enhance the quality of cut and prolong
the cutting tool life. Cutting fluid is applied through small holes located at the
top/shank end of the arbor and feeds via gravity.
4. Switch on the drill. Always proceed with caution at the start of drilling operations.
When using RotoBrute annular cutters apply pressure gradually at first until a depth
of 1/8" is reached. Normal cutting pressure can then be applied.
5. On completion of cut, withdraw the cutter fromhole, switch off the drill, then the
magnet. Ensure the magnet base is clear of chips. Locate the next hole using the
above procedures.
Adjusting Dovetail Slides
Slowly adjust the hex screws while moving the handle up and down. Adjust so there
is no free play or no binding anywhere through its range of travel. Periodically check,
lubricate, and adjust as necessary.
Repositioning of Handles
1. Elevate the slide upward to its full extent.
2. Remove the pinion cap screw and pinion cap from the shaft end
(opposite side to handles).
3. Slide the pinion with the handles on outward, approximately 1/3rd distance.
4. Disengage the rack by means of raising the slide up by another 3/4".
5. Remove pinion, reposition through opposite side of body casting and reverse
procedure as above.
7
RB32-VSR
RB32-VSR ELECTRICAL DIAGRAM
MINIBRUTE
OPERATING INSTRUCTIONS
Assembly of Arbor for use with Annular Cutters
1. Align arbor support bracket with holes on dovetail slide.
2. Align support screws with holes and tighten clockwise.
3. IMPORTANT - do NOT tighten all the way until arbor is in place.
4. Place arbor through center hole of support bracket, making sure spindle bushing collar
is upright. Align with 1/2-20 threaded spindle and tighten clockwise.
5. When arbor is in place, tighten arbor support screws.
6. To remove arbor, use the 17mm wrench provided to hold the spindle nut in place.
Use the 7/16" wrench to hold the flats while turning counter-clockwise to loosen.
Assembly of Drill Chuck for use with Straight Shank Tools
An important feature of the RB32 is that it can quickly and easily be converted to operate
standard twist drills and other straight shank cutting tools such as chassis reamers.
To remove the arbor assembly:
1. Use the included 5mm hex wrench to remove the two arbor support screws.
2. Loosen 3/4" arbor by unscrewing in counter-clockwise direction, using a wrench on
flats located at top of arbor.
3. Remove arbor support bracket.
4. Screw on 3-jaw chuck, supplied, and install safety screw to prevent drill chuck from
becoming frozen.
5. Insert twist drill or other straight shank cutting tool and tighten with chuck key. To
remove drill chuck, reverse procedure.
Assembly of Traverse Handles
1. To assemble traverse handle, place each of the three (3) handles into the threaded
holes on the pinion shaft, turning clockwise to tighten.
2. To remove handles, turn counter-clockwise.
Assembly of Safety Guard
• Loosen screw from underneath the arbor support (front/center). Align the bracket slot
with the screw, and tighten screw until safety guard locks into place.
• To remove safety guard, loosen screw and remove safety guard.
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