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Features & Applications

  • Brushless motor – lasts up to three times longer (no commutator to damage and no carbon brushes to change)
  • Very slim design with lock-on switch – this cordless angle grinder fits firmly in your grip, for more comfortable handling and precise control even in hard-to-reach places
  • Precise speed control from 3400-7600 rpm (max.8500) – you can use higher speeds to cut and grind very quickly, while the lower speeds help you to achieve a perfect surface finish
  • Active Torque Control (ATC) stops the tool body from spinning uncontrolledly if the disc jams – helping to reduce a common safety hazard
  • Cordless tool platform – the same battery for all 22V Hilti tools
  • Cutting and grinding steel, stainless steel and other metals
  • Finishing
  • Deburring and polishing metal
  • Cutting and grinding mineral materials
  • Cutting tiles using continuous-rim diamond discs


Hilti Tool Service
Hilti Tool Service

3 days or free

  • Servicing is free of charge for up to 1 year, including wear and tear, pick-up and delivery
  • Product warranty against parts and manufacturing irregularities for 20 years
  • After the no-cost period, repair costs are capped
  • 1-month no-cost period after each paid repair
  • Exclusive use of genuine Hilti spare parts
More information about Tool Services
Fleet Management
Fleet Management

We manage your tools so you can manage your business.

  • Monthly usage fee covering all tool, service and repair costs helping to ensure absolute cost control and back-office efficiency.
  • High-performing tools and latest technology help to increase jobsite productivity.
  • Loan tools during repair to reduce downtime.
  • Temporary tools for peak times and special applications help to reduce investments.
  • Theft coverage helps to reduce financial risk and unexpected expenses.
More information about Fleet Management

Technical Data

Documents & Videos

Consulting & Support

Introducing the AG 4S-A22

Speed up your cordless grinding performance

The AG 4S-A22 cordless angle grinder raises the bar for speed and handling

Whether cutting rebar, tubes or sheets, deburring, surface cleaning or removing welds, it requires a steady grip to get a good result. The slim, light and balanced AG 4S-A22 is designed to sit firmly in your hand – giving you the responsive handling you need.

Suitable for a broad range of materials

Grinding concrete with the AG 4S-A22


The AG 4S-A22 is ideal for carbon steel applications

Carbon steel

The AG 4S-A22 has a variable speed dial for stainless steel grinding

Stainless steel

The AG 4S-A22 is suitable for grinding metal sheets


Compact and balanced design with the AG 4S-A22 cordless angle grinder

Compact and balanced design

The low-weight, small body and ergonomic design help to improve handling for medium- to heavy-duty grinding and finishing. The slim barrel grip makes it easier to hold and control when undertaking fine grinding.


Variable speed dial makes it the ideal choice for stainless steel

Variable speed dial

The 6-step variable speed dial lets you select the disc speed needed to grind carbon steel and stainless steel, while the brushless motor and Hilti 22V batteries give you reach and performance you can depend upon.

Lock-on switch

Lock-on switch

A lock-on switch means the tool is always working without the need to hold down a button. This reduces operator arm-strain and allows the angle grinder to keep grinding when you change position or grip.

The AG 4S-A22 includes a fast blade stop which contributes to job site safety

Safety features

Active Torque Control (ATC), Active Vibration Reduction (AVR) and a fast-acting disc stop mean you can work faster while keeping the grinder under control, contributing to additional safety on the job. 

The Hilti AG 4S-A22 cordless angle grinder

Versatile, flexible and powerful

A flexible addition to your workbench, the AG 4S-A22 is fully compatible with our range of 22V batteries and chargers and can be used with will all existing cutting and grinding discs up to Localised Dimension Data Required.

Speed control for working with stainless steel

The AG 4S-A22 includes a 6-step speed control letting you select the disc rotation speed, from 3,000 - 8,000 rpm, to match the needs of your application. This is especially important when working with abrasive inserts on stainless steel (inox), where the speed dial is key to:

  • Better results – because you have precise control of the abrasiveness
  • Faster progress – because skilled metalworkers can adjust the tool to suit their most effective technique
  • Flexibility – because you can adjust the speed to suit your material and application

The AG 4S-A22 uses an optimized air-flow system to cool the angle grinder and electronics which results in increased service life. As you'd expect, all Hilti cordless tools come with 1 years of wear-and-tear coverage giving you peace of mind.

a broad range of bonded and coated abrasive discs

Ultimate abrasive grinding disc for metals featuring super-high removal rate and extra-long lifetime.

Grinding discs

Ultimate abrasive grinding disc for metals featuring super-high removal rate and extra-long lifetime.

Ultimate abrasive cutting disc for metals offering extra-long lifetime and extra-high cutting speed.

Cutting discs

Ultimate abrasive cutting disc for metals offering extra-long lifetime and extra-high cutting speed.

The B22/5.2Ah battery is the ideal solution for the AG 4S-A22

B 22/5.2 Ah battery

Powerful yet lightweight 22V Li-ion battery offering high power for convenience and performance.

Dedicated customer service agent just a phone call away


Whatever the job, wherever you are, our teams are always available to help you get the job done

We have dedicated account managers and technical consultants who will meet you directly at the jobsite and offer solutions instantly.

Our customer service agents can provide information, take orders, arrange deliveries and repairs all in just one phone call. And, you have instant access to our products at our many Hilti Stores, where you can try out our tools and inserts and get further advice.

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