Recently a study was conducted to determine the stock removal rate and life of both Sigma Green and Sigma Green Max. Both grinding wheels are manufactured with the same specialty grain and bond combination and are designed for fast grinding with low vibration. The difference is the thickness. Sigma Green Max is a thicker version of the original Sigma Green. This newer ¼”/6mm thick wheel was engineered for longer life.
This test was conducted by weighing the wheels and workpiece before grinding, then after 5 minute test intervals. These 5 minute grinding tests continued until the end of each wheel.
The findings show Sigma Green Max with 40% longer life, 10% higher grinding ratio, and 10% faster grinding ability over Sigma Green.
Below are the test parameters and results.
Sigma Green and Sigma Green Max Grinding Wheel Test
3/29/16
- Wheels: Sigma Green
Sigma Green Max - Grinder: Bosch GWS-7-115 (230V 80 m/s)
- Workpiece: 304 Stainless 9mm flat bar
- Grinding Method
- Weigh the wheel and workpiece before commencing grinding
- Weigh the wheel and workpiece again 5 minutes into grinding
- Check the difference of wheel loss and stock removal in weight; between, before, and after grinding
TEST RESULT
| Product | Weight (g) | Thickness (mm) | Wheel Loss (g) | Stock Removal (g) | Time (min) | Grinding Ratio | Grinding Speed (g/min) |
|---|---|---|---|---|---|---|---|
| Sigma Green | 98 | 4.6 | 49 | 444 | 50 | 9.1 | 8.9 |
| Sigma Green Max | 137 | 5.8 | 68.6 | 684 | 70 | 10 | 9.8 |
Comparison results of Sigma Green Max with Sigma Green
40% higher durability/ Longer Life
10% higher grinding ratio
10% faster grinding speed
