SPEEDAIRE
SPEEDAIRE 12V734 Straight Die Grinder 1/4 in NPT Female Air Inlet
A straight die grinder with a 1/4 in collet, 0.3 hp motor and 31,000 RPM maximum speed for medium-duty metal work
- 3 hp motor powers medium-duty grinding tasks
- 31,000 RPM maximum speed enables rapid material removal
- 1/4 in NPT female air inlet fits standard shop lines
- Straight barrel grip design gives precise control
- Mechanical brake stops the wheel quickly for safety
Straight Die Grinder 1/4 in NPT Inlet
The SPEEDAIRE 12V734 is a medium-duty straight die grinder built for metalworking tasks. It connects to a compressed air supply through a 1/4 in NPT female inlet. The tool delivers 0.3 hp and reaches a maximum speed of 31,000 RPM. It is suited for operators who need a compact pneumatic grinder for steel applications.
Bare Tool With Collet And Case
The package ships as a bare tool with a 1/4 in Erickson collet installed and a protective case included. No additional accessories or lubricants are bundled. The barrel grip and mechanical brake remain the only operator controls provided. Buyers who want extra collets or a complete kit must source those items separately.
1/4 Inch Collet Capacity
The fixed 1/4 in collet size determines which shank accessories can be used directly. Users requiring larger 3/8 in or metric shanks cannot fit them without a different tool. The straight orientation and 0.3 hp rating suit light deburring and finishing rather than heavy material removal.
Highlights
- 3 hp motor powers medium-duty grinding tasks
- 31,000 RPM maximum speed enables rapid material removal
- 1/4 in NPT female air inlet fits standard shop lines
- Straight barrel grip design gives precise control
- Mechanical brake stops the wheel quickly for safety
Specifications
| Brand | SPEEDAIRE |
|---|
Questions about this item
How often will the 1/4 in Erickson collet need replacement?
The collet is included with the bare tool and should be inspected regularly for wear or run-out; replace it when gripping force drops or damage is visible.
What limits continuous operation at 31,000 RPM?
Sustained high-speed running is constrained by the 0.3 hp motor and air supply capacity; heat buildup in the barrel grip will appear first.
How hot and loud does the straight grinder get during all-day use?
The barrel grip transmits motor heat to the hand, and the mechanical brake adds noise; expect noticeable warmth and a steady high-pitched whine at full speed.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.



