4 1 2 Angle Grinder

The 4 1 2 angle grinder is the most versatile power tool for metalworking, offering the perfect balance of power, control, and maneuverability for welding preparation and finishing work. Whether you're grinding welds, cutting metal stock, removing rust, or smoothing rough edges, this compact tool delivers professional results across countless applications. 

Our selection features corded and cordless models with variable speed controls, safety features, and ergonomic designs built for extended use.

Compact Angle Grinder: Perfect Size for Precision Work

Experience optimal control with a grinder size that excels at detailed metalwork without sacrificing cutting power. These mid-sized tools are ideal for weld prep, surface grinding, and fabrication tasks where precision matters as much as performance, making them the top choice for professional welders and serious hobbyists.

• 4.5-inch disc capacity for versatile applications
• Variable speed settings from 5,000 to 11,000 RPM
• Paddle switch and trigger options for user preference
• Tool-free guard adjustments for quick positioning
• Spindle lock for easy disc changes

Optimize your welding setup with proper torch positioning from our TIG torch holders collection to keep your workspace organized and efficient.

Cordless Angle Grinder: Portable Power for Any Job Site

Work anywhere without being tethered to an outlet with battery-powered grinders that deliver corded performance. These cordless models feature brushless motors for extended runtime and durability, making them essential for mobile welding operations, farm repairs, and construction sites where power access is limited.

• 18V and 20V lithium-ion battery compatibility
• Brushless motor technology for longer tool life
• Electronic brake stops disc rotation within seconds
• Battery fuel gauge displays remaining charge
• Compatible with existing battery platforms
  

Expand your metalworking capabilities with essential tools from our welding tools collection including chipping hammers, pliers, and measuring devices.

Heavy-Duty Grinder: Built for Professional Fabrication

Tackle demanding grinding and cutting tasks with industrial-grade tools engineered for continuous use. These robust grinders feature enhanced cooling systems, metal gear housings, and powerful motors that maintain consistent performance under heavy loads, perfect for high-volume fabrication shops and structural steel work.

• 7 to 15 amp motors for maximum material removal
• Metal gear housing dissipates heat effectively
• Anti-vibration side handles reduce user fatigue
• Overload protection prevents motor burnout
• Dust-sealed switches extend tool lifespan

Angle Grinder Accessories: Complete Your Grinding Setup

Maximize your grinder's versatility with the right consumables and attachments for every application. From cutting wheels and grinding discs to wire brushes and flap discs, having quality accessories ensures clean cuts, smooth finishes, and extended tool life across all your metalworking projects.

• Cutting wheels for steel, stainless steel, and aluminum
• Grinding discs in various grits and materials
• Wire cup brushes for surface preparation
• Flap discs for blending and finishing welds
• Diamond blades for masonry and tile cutting

Stock up on quality filler materials from our welding wires collection to ensure strong, clean welds that require minimal grinding and finishing.

Frequently Asked Questions: 4 1 2 Angle Grinder

How deep will a 4.5-inch angle grinder cut?

A 4.5-inch angle grinder can cut approximately 1 to 1.25 inches deep depending on the wheel thickness and arbor configuration. Cutting wheels typically measure 0.040 to 0.125 inches thick, with thinner wheels providing deeper cuts but less durability. Most applications involve multiple passes or cutting from both sides for thicker materials.

What is the difference between 4 1 2 and 5 angle grinder?

The primary difference is disc size, with 4.5-inch grinders offering better control and maneuverability while 5-inch models provide slightly more cutting depth and surface coverage. Both use the same 5/8-11 arbor threading and similar motor sizes. The 4.5-inch size is more common and typically more affordable with wider accessory availability.

Why are 9 inch grinders banned?

Nine-inch grinders are banned or restricted in some workplaces due to higher kickback risk and increased potential for severe injuries. Their larger disc size generates more rotational force, making them harder to control if they bind or catch. Many safety regulations limit workers to 7-inch or smaller grinders unless specific training and precautions are in place.

What size angle grinder is best?

The 4.5-inch angle grinder is best for most welding and metalworking applications, offering the ideal balance of power, control, and versatility. It handles 90% of typical grinding, cutting, and finishing tasks while remaining lightweight and maneuverable. Beginners and professionals alike benefit from this size's ease of use and wide accessory selection.