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Silver straight die grinder with barrel grip and 1/4 in NPT female air inlet

SPEEDAIRE

SPEEDAIRE 12V735 Straight Die Grinder 1/4 in NPT

SKU CH-W2B3-PHQAD

Medium-duty straight die grinder with 0.4 hp motor reaching 21,000 RPM, 1/4 in collet, 1/4 in NPT female inlet, lock-off switch and mechanical brake

  • 4 hp motor delivers medium-duty grinding power
  • 21 000 RPM maximum speed for fast material removal
  • 1/4 in NPT female air inlet fits standard hoses
  • Lock-off switch and mechanical brake prevent accidental starts
  • Includes 1/4 in Erickson collet and protective case

SPEEDAIRE 12V735 Straight Die Grinder

This SPEEDAIRE 12V735 straight die grinder is a medium-duty pneumatic tool built for grinding and finishing steel components. It delivers 0.4 hp and reaches a maximum speed of 21,000 RPM for efficient material removal. The 1/4 in NPT female air inlet connects to standard shop air lines. It is suited for metalworkers and maintenance technicians who need a compact, high-speed rotary tool.

1/4 in Erickson Collet and Carry Case

The grinder includes a 1/4 in Erickson collet that secures compatible accessories for precision work. A protective case is supplied to keep the tool and collet organised during transport and storage. The kit contents list only the bare tool and collet, so operators must source additional bits or burrs separately. This bundle supports immediate setup for basic grinding tasks.

Barrel Grip with Lock-Off Switch and Mechanical

The straight barrel grip provides direct in-line control for detailed applications on steel. A lock-off switch prevents accidental start-up when the tool is connected to an air supply. A mechanical brake stops the spindle quickly after the trigger is released, reducing idle spin time. No anti-restart technology is fitted, so users must observe standard pneumatic safety practices.

Highlights

  • 4 hp motor delivers medium-duty grinding power
  • 21 000 RPM maximum speed for fast material removal
  • 1/4 in NPT female air inlet fits standard hoses
  • Lock-off switch and mechanical brake prevent accidental starts
  • Includes 1/4 in Erickson collet and protective case

Specifications

BrandSPEEDAIRE

Questions about this item

How often should the 1/4 in Erickson collet be inspected or replaced?

Inspect the collet for wear each time you change accessories; replace it if the grip on 1/4 in shanks becomes loose or the threads show damage.

What limits continuous operation at the rated 21,000 RPM?

The 0.4 hp air motor and medium-duty rating mean heat buildup in the barrel grip will require cool-down pauses during extended high-speed grinding.

How much noise and vibration should I expect during all-day use?

The straight, barrel-grip design transmits vibration to the hand, and the mechanical brake adds impulse noise each time the trigger is released.

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