Stirrer Guide
Questions you should answer about your stirring application:
- What are you stirring?
- What is the approximate viscosity of the solution?
- What is the vessel size that you will be mixing in?
- What speed (in rpm) is desired?
- What is the torque requirement?
- What is the duration of the operation?
- What voltage and frequency do you require for the control (most in the U.S. will be 120V, 60Hz, while some areas overseas require 240V, 50Hz)?
- Are you presently using a stirrer for the application? If so, does it work well, and what is the horsepower of the motor?
- What agitator (paddle or propeller) do you want?
| Viscosity Reference Chart | |
|---|---|
| Liquid and Semi Solid Materials centipoise viscosity @ 70 degrees |
Viscosity (in centipoises) |
| Acetone | 0.30 |
| Adiprene (urethane) | 35,000.00 |
| Benzine | 0.50 |
| Corn Syrup | 110,000.00 |
| Ethylene Gylcol | 16.00 |
| Glue (hot melt) | 30,000,000.00 |
| Honey | 3,000.00 |
| Ink | 45,000.00 |
| Ketchup (Heinz brand) | *50,000.00 |
| Lacquer | 1,100-250.00 |
| Linseed Oil (boiled) | 64.00 |
| Linseed Oil (raw) | 28.00 |
| Methyl Ethyl Ketone | 0.40 |
| Milk | *70,000.00 |
Oil (auto lubricating)
|
|
| Oil - Castor | 29.00 |
| Oil - Core | 1,000 - 240.00 |
| Oil - Crude | 15.00 |
| Oil - Corn (Mazola brand) | 72.00 |
| Oil - Soybean | 160.00 |
| Peanut Butter (Skippy brand) | *250,000.00 |
| Salad Dressing (Miracle whip brand) | *250,000.00 |
| Shortening (Crisco brand) | *1,200,000.00 |
| Sulphiric Acid (100%) | 0.20 |
| Syrup (Karo brand light) | 3,200.00 |
| Syrup (Karo brand dark) | 2,500.00 |
| Syrup (Log cabin brand maple) | 144.00 |
| Toluol | 0.60 |
| Tomato Paste | *190,000.00 |
| Turpentine | 1.00 |
| Varnish (Spar) | 420.00 |
| Vaseline Petroleum Jelly | 64,000.00 |
| Water | 1.00 |
| Xylol | 0.60 |
| *The viscosity is representative of viscosity range of material in a static state | |
Glossary of Terms
Constant Torque
A load with a horsepower requirement that varies linearly with a change in speed.
D.C.
Direct current
Mixing
To blend together in a single mass; to make by blending ingredients
Permanent magnet
One of the most important advantages is small overall size made possible by replacing the would field with ceramic magnets. Permanent magnet motors can be useful in a number of specific ways:
- They produce relatively high torque at any speed
- The linear speed/torque curve is easily controlled electronically
Series Moto
Series motors deliver high motor speed, high starting torque, and wide speed capability, making them ideal for a variety of applications.
Torque
A measure of force versus distance
Viscosity
A measure of thickness of material usually measure in units of centipoise. This term is used to describe the internal friction of fluids.
Sources:
Information courtesy of Glas-Col.