Precision Wheels for Surface Grinding, Tool Sharpening, and Finishing
Our Tool Room Wheels, also known as Surface Grinding Wheels or Vitrified wheels, are built for performance in precision metalworking. Designed for tool rooms, maintenance shops, and production grinding applications, these wheels are available in multiple abrasive blends and hardness grades to suit a wide range of materials and grinding demands.
Wheel Grades & Material Types
We offer three high-performance wheel grades to match your specific grinding needs:
| Grade | Color | Material | Best For | Typical Stock Removal |
| PA | Pink | Aluminum Oxide | Rough fast grinding, May wear away quicker but will not clog | Up to .001″ per pass |
| SA | Grey | Premium Aluminum Oxide | General-purpose grinding with longer life and better cut | .001″–.003″ per pass |
| 30A | Blue w/ Purple Hue | 30% Ceramic + 70% Aluminum Oxide | Heavy-duty grinding, hardened steels like stainless, aggressive removal | Up to .004″ per pass |
Hardness Scale & Grinding Characteristics
Wheel hardness affects how quickly abrasive grains break down and how the wheel responds under pressure:
| Hardness Code | Classification |
| F, G, H | Soft – Fast cutting, suited for hard materials |
| I, J, K, L, M, N | Medium – Balanced performance and wear life |
| O, P, Q | Hard – Longer life, better for softer materials or long runs |
- Softer wheels cut faster and reduce heat build-up but wear out quicker.
- Harder wheels last longer, holds its shape and edges better but may cause more heat or glazing if used improperly.
Stocked Sizes
| Dimensions (Diameter x Thickness x Bore) | Type |
| 7″ x 1/2″ x 1-1/4″ | Type 1 |
| 8″ x 1/2″ x 1-1/4″ | Type 1 |
| 8″ x 3/4″ x 1-1/4″ | Type 1 |
| 14″ x 1-1/2″ x 5″ | Type 1 |
| 14″ x 1-1/2″ x 5″ (Recessed) | Type 5 |
Proper Storage & Handling
- Store wheels flat on a clean, dry surface to prevent warping or cracking.
- Avoid stacking wheels vertically or placing heavy objects on top.
- Maintain a stable environment – avoid extreme humidity and temperature swings.
Ring Test – Safety First
Before mounting any grinding wheel:
- Suspend the wheel on a non-metallic pin.
- Tap gently with a non-metallic object (like a wooden mallet or screw driver handle).
- Rotate the wheel 45 degrees and repeat until you have checked he entire wheel
- Listen for a clear metallic ring.
- A dull sound may indicate cracks — do not use.
- Always inspect for visible cracks, chips, or damage before use.
Tips for Performance
- Dress wheels regularly for consistent geometry and cutting action.
- Match wheel spec to material hardness and desired finish.
- Use coolant where applicable to minimize heat and preserve tool integrity.
- Ensure proper RPM rating and secure mounting.
Need Help Choosing the Right Wheel?
Our knowledgeable team can help match you with the best wheel for your grinding application whether you need stock removal, tight tolerances, or smooth finishes. Reach out for expert advice or to request custom specs wheels.
