Norton top USA quality grinding wheels. |
Type 38A white aluminum oxide for light to medium grinding, especially on hard, heat sensitive steels.
Type 32A grey aluminum oxide for heavy duty grinding, including tough alloy steels.
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Tips and hints for choosing grades of white surface grinding wheels:
Softer grades (H and I) are recommended for hard materials, rapid stock removal, and larger contact areas.
Harder grades ( J and K) are recommended for soft materials, longer wheel life, small contact areas.
To make a wheel behave harder, decrease infeed rate, traverse speed, work speed, or through-feed rate.
To make a wheel behave softer, increase infeed rate, traverse speed, work speed, or through-feed rate.