A PCD cup wheel (angle grinder) is best for edges, corners, and small spots. PCD grinding shoes on a floor grinder are faster for open areas. On a 500 m2 floor, shoes win; on a 50 m2 stairwell, the cup wheel wins. They are complementary, not rivals.
A 4-5 inch PCD cup wheel mounts on an angle grinder. It reaches edges, corners, and tight areas that a floor grinder cannot. Slow but maneuverable. Pair it with a dust shroud.
Three or four PCD segments mount on a floor grinder plate. They cover 500-800 mm per pass and strip coatings across open floor fast. Our 9-turbine PCD tools is a 9-turbine PCD design built for high-speed coating removal.
| Factor | PCD cup wheel | PCD grinding shoes |
|---|---|---|
| Open floor speed | Slow (5-15 m2/hr) | Fast (40-80 m2/hr) |
| Edges and corners | Excellent | Cannot reach |
| Operator effort | High (hand tool) | Low (machine) |
| Tool life | Long | Long |
| Cost per m2 | Higher on open area | Lower at scale |
Browse concrete grinding discs category for both PCD formats.
PCD shoes on a ride-on grinder, by a wide margin.
Not directly. Cup wheels are for angle grinders. Floor grinders use trapezoid or puck PCD tools.
They wear slowly. Expect 500-2000 m2 of coating removal depending on the coating thickness.
Use PCD shoes for open floor, PCD cup wheel for edges. Most contractors carry both. contact JOY TECH to order a matched PCD set.
