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Bench-Type Undercutter Model
HV-3 |
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Above: Horizontal commutator ready
for undercutting. Note V-support at right raised to compensate for smaller
shaft diameter.
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Features: → Model HV-3 undercuts horizontal and vertical commutators.
→ Uses either High-Speed Steel or Carbide Saws and V-cutters.
→ Carriage travels on ball bearings both horizontally and vertically
→ Saws spindle is powered by a 1/5 h.p., 5,000 r.p.m. motor.
→Stops and adjustments are provided that allow for safe and fast
undercutting.
→ One-piece solid aluminum base plate yields smooth operation.
→ The base "dovetail" slide section is removable for replacement in the
event of damage.
→ Improved spring loaded spindle damper keeps saw in slot.
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Model HV-3 Undercutter: |
Catalog Number |
| 115 V.,
50/60 Hz. with 1/8" spindle |
HV3UA1 |
| 115 V.,
50/60 Hz. with 3/16" spindle |
HV3UA3 |
| 230 V.,
50/60 Hz. with 1/8" spindle |
HV3UB1 |
| 230 V.,
50/60 Hz. with 3/16" spindle |
HV3UB3 |
| Extra 1/8"
Spindle Assembly |
HV3U30918 |
| Extra
3/16" Spindle Assembly |
HV3U309316 |
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Net Weight 50 lbs., Shipping Weight 90 lbs. |
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Uses either High-Speed Steel or Tungsten-Carbide Saws and
V-Cutters. To change operation from High-Speed Steel to Carbide, or
vice-versa, it is necessary only to reverse pulleys (to change spindle
speed).
Handles a wider variety of armature sizes and shaft lengths than any similar
machine being manufactured.
This outstanding undercutter is designed to handle the large volume
production undercutting of the motor manufacturer, as well as the wide
variety of undercutting requirements encountered in the service shop.
Model HV-3 is precision built, rugged, fast, and accurate. Depth of
cut is governed by a fine screw adjustment. When the saw is being
returned to the riser for the next cut, it is lifted clear of the slot for
indexing.
Two ball bearing spindles are available, with 1/8" or 3/16" arbors.
The machine is equipped with one spindle only; the additional spindle is
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. When both horizontal and vertical commutators are to be
undercut, the 3/16" spindle is used; with the 3/16" hole saws or V-cutters. |
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Below: Vertical commutator
mounted on centers for
undercutting. |
Specifications:
→ 20" between centers.
→ Longer armatures on V-supports, which can be spread to 23" between
inside edges, and have 1" vertical adjustments.
→ Takes armatures 10-1/2" diam, on centers or 12" V-supports.
→ Handles commutators: Vertical - 5-1/4" diam. Horizontal - 6-1/2" long.
→ Saw lifts out of slot on return stroke. |
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Saws and V-Cutters |
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High-Speed Steel |
O.D. |
I.D. |
Catalog Number |
| 9-1/2 HS
Saws |
5/16" |
1/8" |
HSMS9.5 |
| 32-HS Saws |
3/8" |
1/8" |
HSMS32 |
| 16-HS Saws |
1/2" |
3/16" |
HSMS16 |
| 17-VHS Cutters |
1/2" |
3/16" |
HSMSV17 |
| 13-HS Saws |
11/16" |
3/16" |
HSMS13 |
| 13-VHS Cutters |
11/16" |
3/16" |
HSMSV13 |
| Tungsten-Carbide |
O.D. |
I.D. |
Catalog Number |
| 9-1/2-TC Saws |
5/16" |
1/8" |
TUNS9.5 |
| 32-TC Saws |
3/8" |
1/8" |
TUNS32 |
| 16-TC Saws |
1/2" |
3/16" |
TUNS16 |
| 17-VTC Cutters |
1/2" |
3/16" |
TUNSV17 |
For
further speculations see H.S.S. or
Tungsten-Carbide Mica Saws |
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