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INITIAL ASSEMBLY:
Turn the vertical adjustment hand wheel (30-30) over and tighten the set screw. Remove the
carriage stop screw with modified Black Tee Know from the end of the roller slide and install
the carriage assembly (30-2 etc) by inserting the carriage roller bearings into the notches of
the slides. Replace the stop screw with Knob. Three countersunk holes are provided for
screwing the base to a bench.
FOR SLOTTING HORIZONTAL COMMUTATORS:
Fasten the end of the operating handle (30-18) to the base of the carriage (30-2). Position
handle between dowel pins and thread bolt through spacer (30-21) into carriage base (30-
2).
FOR SLOTTING VERTICAL COMMUTATORS:
Fasten the end of the operating handle (30-18) to the bottom of the carriage lifting arm (30-
15).
CHANGING SAW SPINDLES:
To remove the spindle, first, remove the pulley guard (30-28). Loosen the two hollow head
set screws in the motor support bracket (30-3) that hold the spindle in position. Loosen the
tension on the drive belt and slip off the belt. Slide out the spindle housing along with the
pulley. When inserting the other spindle, push it through from the pulley side with the flats
in line with the set screw. Insert the spindle until the flats are under the set screws.
ALIGNMENT:
Fasten a 6" rule or other thin metal straight edge to the saw spindle in place of a saw
(between saw retaining screw and spindle end) with the end of the rule hanging down sev-
eral inches. Align the edge of the rule with the point of the center support and tighten the
saw spindle in this position with the 2 set screws.
PO Box 430 Cleveland, OH 44107 • Phone (216) 521-8567 • Fax Local 521-9476 / USA & Canada (800) 344-9191
E-Mail: sales@martindaleco.com • Website: www.martindaleco.com
HV-3 BENCH-TYPE UNDERCUTTER
INSTRUCTIONS
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Summary of Contents for MARTINDALE HV-3
- Page 1 HV-3 BENCH-TYPE UNDERCUTTER INSTRUCTIONS INITIAL ASSEMBLY: Turn the vertical adjustment hand wheel (30-30) over and tighten the set screw. Remove the carriage stop screw with modified Black Tee Know from the end of the roller slide and install the carriage assembly (30-2 etc) by inserting the carriage roller bearings into the notches of the slides.
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Page 2: Spindle Speeds
SPINDLE SPEEDS: When using Carbide Saws, the large pulley would be on the motor and the small pulley on the spindle. When using High Speed Steel Saws, the large pulley should be on the saw spindle and the small pulley on the motor. OPERATION: FOR HORIZONTAL COMMUTATORS Put a saw of the desired thickness on the saw spindle. -
Page 3: Maintenance
riage lifting arm (30-15) as explained above under Initial Assembly . Push the motor carriage toward the commutator until the saw is withing about 1/8" of the face of the commutator and set the carriage stop with the screw with T-Knob. Adjust the motor carriage position with the vertical adjustment handwheel (30-30) until the saw is near the armature shaft end of the commutator. - Page 4 SAWS and CUTTERS — HIGH-SPEED Steel or CARBIDE Two ball bearing spindles are available, with 1/8” or 3/16” arbors. The machine is equipped with one spindle only; additional spindle available at extra cost. For undercutting horizontal commutators only, the 1/8” spindle is recommended; with it, the 1/8” hole saws listed below are used.
- Page 5 30-2 30-18 30-15 30-21 PO Box 430 Cleveland, OH 44107 • Phone (216) 521-8567 • Fax Local 521-9476 / USA & Canada (800) 344-9191 E-Mail: sales@martindaleco.com • Website: www.martindaleco.com...
- Page 6 Quantity Description Part No. Undercutter Base HV3U301 Carriage HV3U302 Motor Support HV3U303 V-Block Support HV3U304 V-Block HV3U305 Short Center HV3U306 Adjusting Knob HV3U307 Center Knob HV3U308 Spindle (Specify 1/8” or 3/16”) HV3U309 (18 or 316) Spindle Housing HV3U3010 Motor Support Adjusting Screw HV3U3011 Adjusting Screw Plate HV3U3012...