Power Tools for Professionals



5 In. 9.5 A Rat Tail Angle Grinder

Bosch Power Tools deliver stronger performance and lasting reliability. The Bosch 1821 5 In. rat tail grinder is powerful and durable enough for the most demanding jobs. It is light weight and compact with a lock-on switch making it ideal for all day use. 2-position vibration control handle reduces vibration up to 60%. This provides uncompromising user comfort for extended periods of work.

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  • Guard
  • New Vibration Dampening Side-Handle
  • Flange Kit -- 2 610 906 323
  • Spanner Wrench -- 1 607 950 043
  • Grinding Wheel (5") -- 2 610 917 845


  • Powerful and durable for the most demanding jobs/compact and lightweight for all day use
  • 2-position vibration control handle reduces vibration up to 60%, providing uncompromising user comfort for extended periods of work
  • Rear handle trigger with lock-on/off switch for extended use applications
  • Epoxy coated field windings provides the ultimate protection against abrasive dust and metal debris
  • Sealed switch keeps debris out of the switch mechanism and extends switch life
  • Service Minderbrushes eliminates guesswork, stops the tool when preventative maintenance is required
  • Tool-free adjustable guard for quick guard installation and adjustments
  • AC/DC capability extends the versatility of the tool by working from DC outlets such as welders and generators

Technical Data

Amperage 9.5
Height 0.0"
Length 14.75"
No Load RPM 11,000
Rating 120 V
Spindle Thread 5/8 -11 UNC
Voltage 120V
Weight 5.1lb
Wheel Diameter 5"
Works With Cutting Dust Extraction / Collection Hoods
18DC-5E, GA50DC, TG502
Surface Grinding Dust Extraction / Collection Hood
Metal Type 1A Cutting Guard
Includes Guard, New Vibration Dampening Side-Handle, Flange Kit -- 2 610 906 323, Spanner Wrench -- 1 607 950 043, Grinding Wheel (5") -- 2 610 917 845
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Owner's Manual


Accessories and Attachments For 1821

Angle Grinder Wheels
Continuous Rim Diamond Abrasive Blades
Diamond Cup Wheels
Grinder Attachments
Miscellaneous Angle Grinder Accessories
Segmented Rim Diamond Abrasive Blades
Turbo Rim Diamond Abrasive Blades
V-Groove Diamond Blades
Wire Wheels and Cup Brushes


Customer Support

Have a tool, accessory, application or service question?
Call us at 1-877-BOSCH99 (1-877-267-2499) or visit the Frequently Asked Questions.

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Service Hotline

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1-877-BOSCH99 (1-877-267-2499)

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