Nova Finishing Systems
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View Of Three Nova Tumblers 
 

Nova Construction Specifications:
                Our Nova series of small vibratory mills share a common welded metal base coated with a chemically resistant paint. Each machine has an on/off timer with 0-60 minute cycle or constant on. Our unique hard mount spring system transmits maximum use of energy into amplitude or vibration that will roll steel media. The work chamber bowl, is of one piece 5/8 nom. thickness polyethylene construction with a 3/8” inlet and a 3/4x1/2” outlet drain system for wet processing that can be closed for dry applications. The cover lid is a clear see through polycarbonate plastic that is recessed and fits tight to deaden the sound, maintain liquids, debris, and processing integrity.

                What makes our vibratory equipment different is our motor system options. All our machines use an industrial motor with the largest ball bearings available. All our 110volt 60 hz. motors operate at 1725 RPM and are rated for 138,000 hours of service.

Nova Series Model Information:
                
The Nova model numbering system indicates the capacity of the bowl in cubic feet. All 3 digit model numbers should be preceded by a missing decimal point. The last number in the model number indicates the motor. Model numbers ending in zero are standard machines with a good durable motor. Model numbers ending in 1,2, or 3 are custom series high performance machine systems that come with heavier bearings for greater durability and life, but are distinguished by a larger horsepower rating.

                Standard machine systems ending in zero are designed to operate trouble free for a period of 3 to 5 years, based upon 40 hours per week usage factor. For each higher model number ending in 1, 2, or 3, add approximately 2, 4, or 6 years respectively to the average life of the machine system.                                   

Optional Variations:
                
All optional construction features are designated by letters after the model number. These letters also effect performance. The more options, the greater the performance and the longer the life of the equipment. These are as follows:

HT   Heavy Thickness is now the standard version of all Nova equipment. 
This indicates the work chamber bowl construction is 5/8 inches 
nominal thickness instead of 3/8.
HDT Option stands for Heavy Duty and Thickness. This indicates the machine has a 1/2 inch aluminum plate located above the spring suspension system plus the increased bowl thickness which improves performance and life.
SHDT   Option stands for Superior Heavy Duty and Thickness (see above). This is an extremely rugged system specifically designed to run steel media continuously. This machine uses a 1/2 inch shaft fastening hardware, instead of 3/8 inch. Also the motor mounting plate is of special construction.  

Nova Series Capacity Specifications Chart

Side View


MODEL VOLUME LIQUID POUNDS SHIP WT. DIMENSIONS
... B ... C
Nova 250 1/4 cu. ft 2 gal.

100-120 S
35-50 C

32 14... 5 ... 6
Nova 500 1/2 cu. ft 4 gal. 200-230 S
70-90 C
35 17 .. 6 . 71/2
Nova 1000 1 cu. ft. 8 gal. 300-340 S
110-150 C
48 20 .. 71/2 .. 9
Notes: S = weight of steel media. C = weight of ceramic media.
*liquid to top of center hub only 7".

 

Nova Series Motor Specifications Chart
Model Motor Model Motor Model Motor
Nova 250 1/6 HP Nova 500 1/4 HP Nova 1000 1/3 HP
Nova 251 1/4 HP Nova 501 1/3 HP Nova 1001 1/2 HP
Nova 252 1/3 HP Nova 502 1/2 HP Nova 1002 *3/4 HP
Nova 253 1/2 HP Nova 503 3/4 HP Nova 1003 1.0 HP
Motors available in 220V 60 Hz USA and 50 Hz Europe
Standard motor systems are split phase start and are available from stock.
* Motors are capacitor start and systems require 5-7 day delivery.
 

Part Size
See the Capacity Specification Chart shown on comparison link for the physical dimensions of the bowl. This indicates the capacity of the machine system, which is primarily determined by bowl size and that determines the MAXIMUM length, width and/or height of the largest part that can be processed by this bowl. The largest size part(s) that will go into a machine system that will be worked properly or uniformly is determined by the bowl's channel width or "B" dimension. That is, a part will move in an equal x y and z motion. Parts larger than that dimension can be worked in any bowl, equal to "C" dimension; however, they will be touching either the inside or outside walls of the bowl and may not rotate properly. The largest size part is a function or cord length of the inside cone and outside wall diametersLonger parts can be processed that are larger than the channel width; however, the part will not move freely and will be touching either the inside or outside wall of the bowl.
There is no restriction as to the smallest part you can work in our equipment. The problem is locating these parts and getting a media small enough to allow the parts to be separated out of media. The smallest parts capable of being processed and separated by our patented screen system is .030 in size. 

Capacity
Fill capacity is shown in  liquid and pounds of media. Normal deburring and burnishing operations are done with perform media shapes which varies in density and weight. 

       Ceramic media weights approximately 100 pounds per cubic foot.
       Steel burnishing media weights around 300 pounds per cubic foot. 
       Plastic media which normal weights from 55 to 85 pounds per cubic foot.
       Dry organic media from 25 to 35 pounds per cubic foot.
For the best and fastest processing results, all bowls should be run 2/3rds to 3/4 full of media. The greater the amount of media or weight you can get in the machine the faster it works. As a rough guideline, the capacity of parts that can go into our equipment can be determined in a number of ways as follows:

Weight
For deburring purposes, use 50 to 60% media to parts by weight. That is, if the 1 cubic foot machine takes 100 pounds of ceramic media, you can normally add  40 to 50 pounds of parts to that same machine system per batch for a total of 150 pounds.

For polishing purposes, use 80 to 90% media to parts by weight. Based upon 1 cubic foot machine that equals 10 to 20 pounds of parts. Using dry organic media, that equals approx. 25 pounds of media to 15 pounds of parts = 40 pounds.

The Nova 500 series can handle 50 pounds of ceramic media to 25 pounds of parts for a total of  75 pounds. Dry organic + parts = 20-25  pounds approx.

The Nova 250 series can handle 25 pounds of ceramic media to 12 pounds of parts for a total of 37 pounds. Dry organic + parts = 10-12 pounds approx.

Volume
Nova 1000 series or a 1 cubic foot machine system can process the amount of parts you can fit into a box 12" x 12" x 12".
Nova 500 series or a 1/2 cubic foot machine system can process the amount of parts you can get into a box 6" x 6" x 6".
Nova 250 series or a 1/4 cubic foot machine system can process the amount of parts you can get into a box 3" x 3" x 3".

Motors
All Nova vibratory systems come with optional motors.  All vibratory machines get their energy from the eccentric weight. The larger the weight the greater the vertical lift of the bowl and the more aggressive the movement within the work chamber and the shorter the processing time. Naturally the greater the eccentric weigth the more pressure is exerted on the motor and bearings. At some point, life expectancy of the motor is determined by the weight of the eccentric. To increase the vertical movement and aggressivness and motor life, larger bearings are required and in to get larger bearings a larger horse power motor is required. 

All model numbers are 2 digits plus an ending number of 1, 2, or 3. These ending numbers indicate the next larger motor and eccentric system beyond the standard for that capacity machine. For each motor improvement, aggressiveness and processing time is improved as much as 10% over the previous motor. 

 




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