Weiler 57100 Type 27 Grinding Wheel 4.5 in 30 Grit

Product Description

The WEILER 57100 is a Type 27 depressed center grinding wheel designed for aggressive material removal on steel and stainless steel. It measures 4.5 inches in diameter and 1/8 inches thick, with a 5/8-11 threaded arbor hole for direct mounting on compatible right angle grinders. The wheel is constructed from aluminum oxide abrasive bonded with a resinoid bond and carries a hardness code of R, placing it in the medium-hard range for consistent cut rate and extended service life. A reinforced construction supports a maximum operating speed of 13,300 RPM. Licensed HVAC, mechanical, and fabrication tradespeople reach for this wheel when grinding welds, cleaning base metal, or deburring structural steel components.

This wheel is suited for use on mild steel and stainless steel in fabrication shops, mechanical rooms, and field service environments. The 30-grit aluminum oxide abrasive provides fast stock removal rather than fine finishing, making it appropriate for weld blending, surface prep before welding, and heavy deburring. The Type 27 depressed-center profile allows the working face to contact the material at a low angle, which is the standard geometry for right angle grinder work and gives the operator better sight lines on the cut zone.

Key Features

• Type 27 depressed-center profile for low-angle grinding with right angle grinders
• 30-grit aluminum oxide abrasive for rapid stock removal on steel and stainless steel
• Resinoid bond with hardness code R delivers consistent cut rate under load
• Reinforced construction rated to 13,300 RPM maximum operating speed
• 5/8-11 threaded connector for direct tool mounting without a separate backing pad
• Black wheel color provides clear visual contrast for wear monitoring during use

Compatibility

Designed for use with right angle grinders accepting a 5/8-11 threaded arbor. Rated for material applications on steel and stainless steel per manufacturer specifications.

Installation Notes

Mounting and replacement of grinding wheels should be performed by qualified personnel following ANSI B7.1 safety requirements and applicable workplace safety regulations. Always power down and unplug or lock out the grinder before changing wheels. Inspect the wheel for cracks or chips before mounting, and never exceed the maximum RPM marked on the wheel. Ensure the grinder guard is in place before operating.