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NOVA-HUTSON CENTRIFUGAL DISC FINISHERS
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Disc Finishing Technology
The disc finisher is the newest technology of mass finishing equipment and one of the fastest systems in terms of speed or cycle times. The disc finisher produces very high energy centrifugal forces and pressure unmatched by other generations of mass finishing equipment.
Energy and forces are generated to produce pressure by a spinning bottom disc that propel parts and media against a stationary side wall container or bowl. The higher the energy and the higher the mass the greater the pressure the shorter the time cycle. E+M=P or E+M=T.
First generation barrel tumbling systems operate at one force of gravity or 1 g of pressure. Second generation vibratory systems produce 8 to 10 g’s of pressure and third generation centrifugal systems produce 20-24 g’s. That pressure relates to time as follows: For every 100 minutes a barrel tumbler operates, a vibratory system will produce the same results in 10 minutes and a centrifugal system equals 1 minute.
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Nova-Hutson Construction Specifications
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The standard DF-12 disc finisher is of one piece flat curved wall bowl construction and has provisions for a 3/8 I.D.tubing inlet supply of air or liquid compound with a 3/4x5/8 fitting for 5/8 I.D. tubinng outlet fittings and plumbing. The DF-10 and DF-14 have a metal casing and 16 sided urethane wall construction. These machines are considered Quick Change Products because they can be re-worked by the end user. These systems have both a 3/4x5/8 fitting for 5/8 I.D. tubing inlet and outlet elbow plumbing fittings for wet systems and 1" fittings and tubing for dry air systems. The DF-12 can not be re-worked by the end user and must be returned for rework and replacement parts. All bowls are locked into place for normal operations and the whole upper bowl assembly is manually tilted to dump its contents once a latch released.
The DF-18 disc finisher is a free standing 1 cu.ft. self contained machine system that has a manual tilt platform mechanism. This system features the 16 sided bowl construction with a high-lift design that intensifies deburring and polishing action and comes with an attached control panel.
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Optional Variations
All optional features are shown on the price sheet after the price by a numbered footnote. For general information and comparison, the following designations denote differences:
S Model version has a composite steel and 16 sided urethane bowl, urethane rings and spinner. Smallest dimensional part recommended is .125 inches larger.
I Model version has carbide coated steel wear ring parts and a tolerance gap of .010 good for the smallest of parts.
SP Model version has a solid tungsten carbide coated wear ring parts for extremely long life and a tight tolerance gap of .005.
NOTE: 1. All DF-14 machines come with a clear polycarbonate cover lid that seals
the work chamber bowl. It serves to deaden sound and as an attachment for a vacuum cleaner hose for better air flow purging for dry operations.
2. All machine systems can be purchased with a variable speed motor at extra cost.
3. The DF-10,12, & 14 can be purchased with the D3 Liquid Dispensing/ Re-Circulating
Tank System and work platform for additional cost. This system takes the place of the
former Cell Star turnkey system.
4. All machine systems can be purchased with a water and compound feed system.
Exclusive Toroidal Action
Provides High Energy
Surface Finishing Results
The Disc Finisher utilizes a high speed disc
with a unique X,Y, & Z centrifugal torodial action
or flow pattern of abrasives and parts to create
greater pressure and speed to produce uniform
deburring , polishing, and surface finishing.
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The disc accelerates parts and media out
from the center on the disc to the bowl walls
and the speed lifts the media up the walls
where it decelerates and returns to the center of the disc. This produces a uniform mechanical action on anything within the flow pattern of the media. The results are greater pressure equals greater material removal in a shorter period of time.
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NOVA – HUTSON MODEL SERIES SPECIFICATIONS CHART [1]
| Model |
H.P.
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Volume
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Liquid
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Pounds
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Part Size
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Bowl I.D.
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| DF-10 |
1
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.18 Cu.Ft.
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9 Pts.
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18
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2
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10”
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| DF-12 |
1
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.36 Cu.Ft.
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3 gals.
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40
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4
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12”
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| DF-14 |
1
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.45 Cu.Ft.
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4 gals.
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55
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4
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13”
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