M18 FUEL Grinders

January 27, 2022
5” Flathead Braking Grinders and 4-½"-5” Variable Speed Grinders

Milwaukee Tool expands its cordless specialty angle grinder lineup with the new M18 FUEL™ 5” Flathead Braking Grinders and the new M18 FUEL™ 4-½"-5” Variable Speed Grinders, making Milwaukee the only brand with a full grinder lineup on a single battery platform. Designed for the toughest grinding and cutting applications, these grinders deliver the next level of jobsite productivity and enhanced safety. 

Generating 11 amp corded power, the M18 FUEL™ 5” Flathead Braking Grinders deliver 8,500 RPM for maximum sustained power and allow users to push the battery-powered grinder harder and longer than ever before. Its low-profile, flathead design provides greater accessibility to tight spaces to complete a cut or grind an edge where a traditional 5” grinder may not be able to reach. 

The M18 FUEL™ 4-½"-5” Variable Speed Grinders generate 11 amp corded power and feature five-speed settings between 3,500 RPM and 8,500 RPM, giving the user greater control by allowing the user to slow down or speed up the accessory during grinding and cutting applications. 

Both grinders feature a RAPIDSTOP™ Brake for enhanced user safety, stopping most wheels in less than two seconds. The grinders are available with either a paddle switch, designed for increased comfort and ease-of-use when operating in various positions, or a slide switch, designed to reduce user fatigue. Tool-free guard adjustments provide faster guard installations and adjustments to keep users productive on the job. 

True to all M18 FUEL™ solutions*, the new grinders combine three exclusive innovations – the POWERSTATE™ brushless motor, REDLITHIUM™ battery pack, and REDLINK PLUS™ intelligence.  

The POWERSTATE™ Brushless Motor provides maximum sustained power, allowing users to complete the toughest grinding and cutting applications and push cordless grinders harder than ever before on the on the jobsite. REDLINK PLUS™ Intelligence ensures unmatched levels of performance, protection, and compatibility. When equipped with a REDLITHIUM™ HIGH OUTPUT™ XC 6.0 Battery, which delivers 50% more power and runs 50% cooler than standard XC REDLITHIUM™ Batteries, the grinders allow users to get more done on a single charge. 

Milwaukee is committed to improving productivity by providing performance-driven and trade-focused solutions so users can perform an entire day’s work on one battery system. The new M18 FUEL™ Grinders are fully compatible with the entire M18™ line, now offering more than 200 power tool solutions. 

*M18 FUEL™ is engineered for the most demanding tradesmen in the world. Delivering unrivaled performance, all M18 FUEL™ products feature three Milwaukee®-exclusive innovations—The POWERSTATE™ Brushless Motor, REDLITHIUM™ Battery Pack and REDLINK PLUS™ Intelligence Hardware and Software—that deliver unmatched power, run-time, and durability on the jobsite. Simply put, M18 FUEL™ tools are the most powerful 18V cordless tools in their class 

Specifications 

M18 FUEL™ 5” Flathead Braking Grinder, Paddle Switch No-Lock (2886-20)

  • RPM: 8,500 RPM 
  • Switch Type: Paddle Switch No-Lock 
  • Disk Size: 5” 
  • Arbor Size (in.): 5/8” 
  • Tool-Free Guard Change: Yes 
  • Brake: Yes 
  • Overload Protection: Yes 
  • Adjustable Handle: Yes 
  • Tool Length: 14” 
  • Tool Weight: 3 lbs 

Includes: M18 FUEL™ 5” Flathead Braking Grinder, Paddle Switch No-Lock (2886-20), (1) Flange Nut, (1) Back Flange, (1) T27 Guard, (1) T1 Guard, (1) Spanner Wrench & Large Contractor Bag. 

 M18 FUEL™ 5” Flathead Braking Grinder, Slide Switch Lock-On 
(2887-20)

  • RPM: 8,500 RPM 
  • Switch Type: Paddle Switch No-Lock 
  • Disk Size: 5” 
  • Arbor Size (in.): 5/8” 
  • Tool-Free Guard Change: Yes 
  • Brake: Yes 
  • Overload Protection: Yes 
  • Adjustable Handle: Yes 
  • Tool Length: 14” 
  • Tool Weight: 3 lbs 

Includes: M18 FUEL™ 5” Flathead Braking Grinder, Slide Switch, Lock On (2887-20), (1) Flange Nut, (1) Back Flange, (1) T27 Guard, (1) T1 Guard, (1) Spanner Wrench & Large Contractor Bag.  

M18 FUEL™ 4-½" / 5” Variable Speed Braking Grinder, Paddle Switch No-Lock (2888-20)

  • RPM: 3,500-8,500 RPM 
  • Switch Type: Paddle Switch No-Lock 
  • Disk Size: 4-½" - 5” 
  • Arbor Size (in.): 5/8” 
  • Tool-Free Accessory Change: Yes 
  • Brake: Yes 
  • Overload Protection: Yes 
  • Adjustable Handle: Yes 
  • Variable Speed: Yes 
  • Tool Length: 13” 
  • Tool Weight: 3 lbs. 

Includes: M18 FUEL™ 4-½" / 5” Variable Speed Braking Grinder, Paddle Switch No-Lock (2888-20), (1) Flange Nut, (1) Back Flange, (1) T27 Guard, (1) T1 Clip-On Guard, (1) Spanner Wrench & Large Contractor Bag. 

M18 FUEL™ 4-½" / 5” Variable Speed Braking Grinder, Slide Switch Lock-On (2889-20)

  • RPM: 3,500-8,500 RPM 
  • Disk Size: 4-½" - 5” 
  • Switch Type: Slide Switch Lock-On 
  • Arbor Size (in.): 5/8” 
  • Tool-Free Accessory Change: Yes 
  • Brake: Yes 
  • Overload Protection: Yes 
  • Adjustable Handle: Yes 
  • Variable Speed: Yes 
  • Tool Length: 13” 
  • Tool Weight: 3 lbs. 

Includes: M18 FUEL™ 4-½" / 5” Variable Speed Braking Grinder, Slide Switch Lock-On (2889-20), (1) Flange Nut, (1) Back Flange, (1) T27 Guard, (1) T1 Clip-On Guard, (1) Spanner Wrench & Large Contractor Bag. 

Related Glossary Terms

  • arbor

    arbor

    Shaft used for rotary support in machining applications. In grinding, the spindle for mounting the wheel; in milling and other cutting operations, the shaft for mounting the cutter.

  • fatigue

    fatigue

    Phenomenon leading to fracture under repeated or fluctuating stresses having a maximum value less than the tensile strength of the material. Fatigue fractures are progressive, beginning as minute cracks that grow under the action of the fluctuating stress.

  • grinding

    grinding

    Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.

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