Jet 505450 Variable-speed Angle Grinder 4 Inch

Product Description

The JET 505450 is a 4-inch variable-speed angle grinder built for sustained use in grinding, cutting, and surface preparation tasks. It runs on pneumatic power and ramps up to a maximum of 12,000 RPM through a variable-speed throttle, letting the operator match wheel speed to the material and application. Precision spiral bevel gears transfer torque and speed directly to the spindle, contributing to consistent output and extended tool life. A safety throttle lock prevents accidental startup, making it appropriate for busy shop floors and job sites where multiple operators share tools.

This angle grinder is suited for metalworking, fabrication, and maintenance applications where disc diameter, speed control, and operator comfort are priorities. The two-position ergonomic handle reduces hand fatigue during extended use, which matters on production runs or extended surface work. The toolless wheel guard swivels a full 360 degrees with nine preset positions, allowing quick repositioning without stopping work. It is typically installed and operated by machinists, fabricators, pipefitters, and maintenance mechanics working in industrial or commercial settings.

Key Features

• Variable-speed throttle with maximum speed of 12,000 RPM
• Two-position ergonomic handle reduces hand fatigue during extended use
• Toolless wheel guard swivels 360 degrees with 9 preset positions
• Safety throttle lock prevents accidental startup
• Precision spiral bevel gears for efficient torque and speed transfer to the spindle
• Compact 4-inch disc size for controlled material removal and access to tight areas

Compatibility

Designed as an OEM-style replacement or direct-use tool compatible with standard 4-inch grinding and cutting wheels using a matched arbor size.

Installation Notes

This tool is operated by qualified trades professionals familiar with pneumatic angle grinder safety procedures. Before mounting or changing a wheel, disconnect the air supply completely and verify the wheel guard is properly positioned and secured. Always inspect the grinding wheel for cracks or damage before use, and confirm the wheel's rated RPM meets or exceeds the tool's maximum speed. Follow applicable OSHA and ANSI B7.1 standards for abrasive wheel mounting and use.

Technical Specifications

• Model: JAT-450
• Disc Size: 4 inches
• Maximum Speed: 12,000 RPM
• Length: 11.18 inches
• Width: 5.91 inches
• Height: 4.41 inches
• Weight: 4.45 pounds

Standard Information

• Brand: JET
• Manufacturer Part Number: 505450