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P.R. HOFFMAN SERIES 3600 DOUBLE SIDED LAPPER

GRINDER
Manufacturer:
HOFFMAN
Model:
3600
Year:
1984
Stock #:
5070
P.R. HOFFMAN SERIES 3600 DOUBLE SIDED LAPPER

The 3600 is a double sided, planetary lapping and polishing machine f
or processing parts
as large as 10" in diameter. It is capable of generating flatness to
less than 1 helium light
band per inch, parallelism to .00002", uniform thickness to +/- .0000
5" and surface
finishes of 1 r.m.s. or less on wide variety of materials. The rugge
d design of the 3600
Series Lapping or Polishing machine offers the ability to process mat
erial at high pressures
for fast removal rates or low pressures for slower stock removal and
thin, fragile work.
The unique "jog" feature insures ease of loading/unloading of parts b
y giving the operator
the ability to index each workholder to the front of the machine. In
short, the 3600 Series
machine is a quality machine tool for processing materials that requi
re precise flatness and
parallelis.
MACHINE CAPACITIES
Round parts Load capacities
1.0" 150
1.5" 96
2.0" 72
2.5" 54
3.0" 42
3.5" 36
4.0" (100 mm) 24 (30)
4.5" 24
5.0" (125 mm) 18
(CONT.)
Square parts Load capacities
1.0" 132
1.5" 84
2.0" 60
2.5" 42
3.0" 30
3.5" 18
4.0" 18
4.5" 12
5.0", 5.5", 6.0", 6.5", 7.0", 7.5" 6
Table size 36"
Number of carriers 6
Number of teeth for carriers60
Part capacities may vary according to type and material
and/or tolerances desired contact factory for recommendations
.
Overall dimensions
Machine 90" L-R x 70" F-B x 110" H
Hydraulic unit40" x 44"
Approximate weight 9,000 lbs.

MOTOR SPECIFICATIONS

15 HP 3/60/230/460 Main motor
1/4 HP A/C Slurry pump motor
1/4 HP A/C Coolant pump motor
NOTE Machine is currently wired for 3/60/460 volt.
Page 3 of 3

Operator control panel with push button controls
Process control station
Two (2) cycle timers; (1) 0-6 minutes, (1) 0-60 minutes
Slurry system
Manual bottom plate adjustment
Automatic electric sizing control with electronic digital readout
Miscellaneous table dressers
Miscellaneous carriers
Lapping plate covers
Lapping pressure control with pressure indicator gauge (PSI) and pres
sure control valve
REPLACEMENT COST IS IN EXCESS OF $148,000.00
NOTE Machine was purchased from government stand by storage and appears to
be in like new
condition.

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