NOVA-HUTSON CENTRIFUGAL DISC FINISHERS

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. 

Nova-Hutson Construction Specifications

            All Nova-Hutson disc finishing systems share a one piece 12 g welded steel machine base with a lift and tilt top plate and bowl. All wearable and abrasive surfaces such as bowls and spinners are constructed out of metal castings and ½  -1” polyurethane. All DF-10,12, and 14 models use a 1 HP motor, controlled by an on-off/timer switch, and driven by a belt pulley system.

The standard gap for all disc finishing machines is .010; however, the industrial version can have a tighter tolerance gap of .005 and special wear materials. The DF-10 and 14 now have a new design that virtually eliminates the gap entirely which make them ideal for dry processing operations.

            The standard DF-12 disc finisher is of one piece flat curved wall bowl construction and has provisions for a 3/8 inlet supply of air or liquid compound with a 3/4x1/2 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 3/4x1/2 inlet and outlet elbow and plumbing fittings. 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 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.

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 can be purchased with a clear polycarbonate cover lid that seals
                  the work chamber bowl. It also serves 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.

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.

NOVA – HUTSON MODEL SERIES SPECIFICATIONS CHART [1]

NOVA-HUTSON DISC FINISHER
Standard Product

NOTE: Repair and Rework
When these finishing work chambers show excess wear, just return them to Nova Finishing Systems Inc. where it will be re-machined and a new spinner fitted. This procedure can be performed up to 3 times before a work chamber is required.

                              NOVA-HUTSON DISC FINISHER
                               WET & DRY Cell Star Products

            Single Source for Solving Surface Finishing Problems
                              NOVA-HUTSON DISC FINISHER
                       DF-18 XVI with the exclusive HI-LIFT action

Nova Vibratory: Products | Compare | Prices | Accessories | Media Prices | Media Selection

PO Box 185, Hatboro, PA 19040 * 1610 Republic Rd. Huntingdon Valley, PA. 19006
215-942-4474 * 800-444-4159 * Fax 215-953-1342
sales@novafinishing.com