We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Blue metal pneumatic angle grinder with side handle and safety lever

Chicago Pneumatic

Chicago Pneumatic 4 1/2 in Angle Air Grinder 12000 rpm 1.10 HP

SKU CH-7K3M-DM0TS

4 1/2 inch pneumatic angle grinder delivers 1.1 HP at 12,000 rpm with a safety lever and Type 27 wheel compatibility

  • Product typeAir Grinders
  • Heavy-duty grinding at 12,000 rpm free speed
  • 10 hp motor delivers strong material removal
  • Safety lever prevents accidental start-up
  • 4 1/2 in wheel fits Type 27 discs
  • Variable speed control for precise application

Chicago Pneumatic 4 1/2 in Angle Air Grinder

The Chicago Pneumatic 4 1/2 in Angle Air Grinder is a heavy-duty pneumatic tool built for grinding and cutting tasks. It delivers 1.10 HP at a free speed of 12,000 RPM and accepts Type 27 wheels with a 3/8 in.-24 spindle thread. The safety lever and variable speed control support precise operation in industrial and automotive environments.

Air Supply Requirements

Verify that your compressor can deliver sufficient flow at the required pressure for a 1.1 HP air tool. The grinder connects via a 1/4 in NPT female air inlet, so confirm your hose and fittings match this connection size and thread type. Ensure the supply line is clean and dry to prevent internal contamination and premature wear.

Workshop Integration

This standard-reach angle grinder fits into existing pneumatic systems using common 1/4 in air couplers. Its safety lever reduces accidental start risk during tool changes or repositioning. Variable speed allows the operator to match RPM to the accessory and material, reducing the need for multiple single-speed grinders on the bench.

How it compares

Measured against everything we stock in Air & Hydraulic Power Tools, at today’s prices. Recalculated every night.

Price $267.99
Pricier than about 81% of the 243 comparable items (median $61.99).

Specifications

Product
Brand nameChicago Pneumatic
Product typeAir Grinders

Questions about this item

Does the grinder come with a Type 27 wheel or must I buy one separately?

The tool is designed for Type 27 wheels up to 4 1/2 in diameter; a wheel is not included and must be purchased separately.

Which spindle thread matches the available wheels for this model?

The spindle uses a 3/8 in.-24 thread, so select Type 27 wheels with that same thread size.

What does the 12 000 rpm free-speed rating mean when the tool is under load?

Free speed is the no-load maximum; actual operating speed will drop below 12 000 rpm once the wheel contacts the workpiece.

More in Air & Hydraulic Power Tools

Similar items