The Benchmark Abrasives 4-1/2" Corded Angle Grinder is engineered to tackle tough jobs with reliable performance. Featuring a 7-amp motor with a no-load speed of 11,000 RPM, this grinder handles metal cutting, rust removal, and weld slag cleanup. Whether cutting rebar, beveling steel, or cleaning welds, its high-speed motor and durable 5/8"-11 threaded arbor deliver dependable performance.
Designed for consistent use, this 120V corded grinder features a 6.5-foot power cord for convenient movement around the jobsite. Its compact 4-1/2" wheel size provides maneuverability in tight spaces, while the rugged housing is built to withstand demanding working conditions.
Optimized for Benchmark Abrasives Accessories
Designed for compatibility with Benchmark Abrasives flap discs, cut-off wheels, and grinding wheels, this angle grinder supports a range of metalworking and fabrication tasks. Tool-less wheel changes help simplify accessory replacement, while consistent motor performance supports efficient grinding and cutting.
Quantity: 1 Grinder + spanner wrench + set of replacement brushes
Features
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Powerful 7-amp motor delivers the performance needed for grinding, weld cleanup, shaping, and surface preparation
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11,000 RPM no-load speed provides fast cutting and aggressive material removal
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Compact 4-1/2" platform balances power with maneuverability for shop and fabrication work
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5/8"-11 arbor supports a wide range of compatible threaded grinding and surface-preparation accessories
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Compatible with properly mounted 7/8" center-opening wheels using the correct flanges and guard
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Corded 120V power delivers consistent performance without battery charging or battery swaps
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6.5 ft power cord provides practical reach around benches, weld tables, and fabrication areas
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Versatile abrasive platform lets one grinder handle grinding, blending, cleaning, surface preparation, and approved cutting applications
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Compact profile improves access around corners, weldments, edges, and confined work areas
Applications & Performance
A good angle grinder earns its place in the shop by doing far more than one job. Change the abrasive or wheel and this grinder can move from aggressive stock removal to weld blending, surface preparation, or cutting work in minutes.
Ideal Applications:
- Grinding and smoothing welds
- Weld bead blending and cleanup
- Removing rust, scale, paint, and surface contamination
- Beveling and shaping metal
- Edge preparation before welding
- General fabrication and repair
- Surface preparation before finishing or coating
- Cutting metal with the proper wheel, guard, flanges, and setup
Built to Work with the Abrasives You Already Use
The 5/8"-11 arbor supports compatible threaded accessories, while compatible 4-1/2" accessories with a 7/8" center opening can be installed using the proper mounting hardware.
Pair the grinder with Benchmark Abrasives:
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Flap Discs for weld blending, grinding, deburring, and finishing
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Grinding Wheels for aggressive stock removal and weld cleanup
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Cut-Off Wheels for fast, controlled metal cutting with the correct cutting setup
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Surface Preparation Products for rust, coating, oxidation, and surface cleanup
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Threaded Accessories designed for a 5/8"-11 arbor
Use 4-1/2" accessories rated for at least 11,000 RPM. Threaded accessories must match the 5/8"-11 spindle; unthreaded 7/8" center-opening wheels require the correct locating flange and mounting hardware. The wheel type, thickness, flanges, and guard must suit both the grinder and the operation.
Why Choose a 4-1/2" Corded Grinder?
Power without downtime – The 120V corded design keeps delivering power without waiting for batteries to recharge.
11,000 RPM performance – High operating speed provides the cutting and grinding action needed for demanding metalworking jobs.
Compact control – The 4-1/2" size is easier to maneuver around fabrication work, corners, edges, and tighter spaces than larger grinders.
Versatile 5/8"-11 arbor – A common arbor size gives you a broad selection of compatible abrasive and metalworking accessories.
One tool, multiple jobs – Grind, blend, clean, shape, prep, and cut by matching the grinder with the proper accessory.
Safety Tips
- Always wear appropriate eye, face, hearing, hand, and respiratory protection for the application.
- Use only 4-1/2" accessories suitable for this grinder and rated for at least 11,000 RPM.
- Confirm the accessory, arbor, mounting hardware, flanges, and guard are correct for the application before use.
- Inspect wheels and discs before installation. Never use an accessory that is cracked, damaged, excessively worn, or improperly mounted.
- Keep the grinder guard installed and correctly positioned for the accessory being used.
- Maintain a firm two-handed grip and stable working position during operation.
- Allow the grinder to reach operating speed before contacting the workpiece.
- Keep sparks away from flammable materials and maintain adequate ventilation.
- Disconnect the grinder from power before changing wheels, accessories, or making adjustments.
