3M Grinder 28403, T27, 4 in, 3/8 in-24 EXT, 1 hp, 12,000 RPM, 1 Per Case

• 3M Gripping Material helps reduce vibration and enhance operator comfort
• Exhaust systems direct exhaust air away from workpiece and operator for reduced surface contamination and optimal operator comfort and safety
• Side handle may be removed or repositioned to accommodate right-hand or left-hand use
• Steel guard may be repositioned for better visibility

Having the right tool system for the job is an essential part of any application. 3M engineered the 3M Grinders to power abrasives and accessories — making your cutting, grinding, blending or finishing jobs fast, easy and efficient.

Balancing Power and Comfort
Our 3M Grinders are pneumatically powered with a reliable, high output motors — available in 1 HP and 1.5 HP. High output motors allow operators to apply significant pressure without interrupting tool performance, which results in the work getting done faster. 3M Gripping Material enables a firmer hold on the tool, minimizes vibration, and insulates the operator from possible hot or cold touch temperatures. Altogether, these characteristics enhance operator comfort and control and make these lightweight, powerful tools a user-friendly option for tackling tough metalworking applications. A removable and repositionable side handle means operators can run the grinder right or left handed.

Grinder Variations
3M Grinders are available in a few variations. 4" grinders with a 3/8 - 24" EXT thread are commonly used in ship-building and other applications that require smaller abrasives. They're great for weld leveling and blending, metal preparation and plasma cut clean-up. 4-1/2" grinders with a 5/8 - 11" EXT thread are great for metal fabrication applications including grinding, blending, weld leveling, metal prep and pipe notching. Both grinders are offered in standard or extended lengths. Typically, extended versions are ideal for hard-to-reach areas, and the addition of a second grip places the operator's hand further from the grinding area for safer operation.

Use with Type 27 Abrasives
We engineered the 3M Grinders to be used with Type 27 wheels or discs, which have a depressed center. A depressed center enables the flange to sink into the abrasive, so the abrasive may be used for grinding and cutting applications and not risk marring or gouging the workpiece. The accompanying steel guard on the grinder has an open face and can be re-positioned for greater visibility of the work area. Some Type 27 abrasives will have a threaded hub that mounts directly to the grinder, while other Type 27 abrasives require flanges to mount to the tool. For optimal safety, operators should always read and follow manual safety instructions and ensure the tool's operating speed does not exceed the maximum RPM imprinted on the tool.

Altogether, the 3M Grinders are powerful and reliable, designed to help you tackle your toughest metalworking applications.

Trusted 3M Grinder Model

The 3M Grinder 28403 is a reliable tool designed for demanding metalworking tasks. This model features a 1 hp motor that delivers consistent power for efficient grinding and cutting.

Its 12,000 RPM speed ensures fast material removal, making it suitable for various industrial applications. The 3M brand guarantees quality and durability you can count on.

Compact 4 Inch Size

This grinder comes with a 4 inch wheel size, ideal for precision work in tight spaces. The compact size allows operators to maneuver easily while maintaining control.

Its 3/8 in-24 EXT thread fits common abrasives, making it versatile for weld leveling, blending, and metal preparation tasks. This size balances power and accessibility well.

Ergonomic Operator Comfort

Designed with user comfort in mind, the grinder includes 3M Gripping Material to reduce vibration and improve grip. This helps minimize operator fatigue during extended use.

The side handle is removable and repositionable for right- or left-hand operation, enhancing control and safety. The steel guard can also be adjusted for better visibility of the work area.

Powerful Pneumatic Motor

The 1 hp pneumatic motor provides high output for tough grinding jobs without losing performance under pressure. This power lets operators work faster and more efficiently.

With a maximum speed of 12,000 RPM, the grinder handles demanding applications like plasma cut clean-up and metal fabrication with ease. Its lightweight design adds to operator convenience.

Single Unit Pack Count

This product is sold as 1 ea per case, making it easy to order exactly what you need without excess inventory. The packaging suits both individual users and small teams.

Having a single unit per case simplifies storage and transport. It also ensures the grinder arrives protected and ready for immediate use on the job site.