SPEEDAIRE
SPEEDAIRE 21AA83 Type 27 Angle Grinder 0.8 hp 1/4 in NPT Female Air Inlet Heavy Duty
Heavy-duty 4-inch angle grinder with 0.8 hp motor reaching 10,000 RPM and safety throttle lever
- 8 hp motor delivers strong cutting power
- 10,000 RPM maximum speed for fast material removal
- Safety throttle lever prevents accidental starts
- Heavy-duty construction handles demanding workshop tasks
- 1/4 in NPT female inlet fits standard air lines
SPEEDAIRE Type 27 Angle Grinder
The SPEEDAIRE 21AA83 is a heavy-duty pneumatic angle grinder built for professional metalworking and fabrication tasks. It accepts Type 27 wheels with a four-inch diameter and delivers 0.8 horsepower for material removal and surface preparation. The tool suits technicians who need reliable air-powered performance in industrial or automotive environments.
1/4 in NPT Female Air Inlet Integration
The grinder connects to a compressed-air system through a 1/4 inch NPT female inlet, requiring a compatible hose and fitting for operation. Its safety throttle lever controls airflow to the motor, which runs between 9,000 and 11,000 RPM with a maximum speed of 10,000 RPM. Variable speed capability lets the operator adjust output for different wheel types and materials without changing the air supply.
Spindle Thread and Safety Lever Details
A 3/8 inch -24 spindle thread secures the grinding wheel, while the safety throttle lever prevents accidental starts during handling or hose connection. Standard reach design positions the wheel for typical grinding angles without extended accessories. California Proposition 65 notices indicate the product contains chemicals known to cause cancer and reproductive harm.
Highlights
- 8 hp motor delivers strong cutting power
- 10,000 RPM maximum speed for fast material removal
- Safety throttle lever prevents accidental starts
- Heavy-duty construction handles demanding workshop tasks
- 1/4 in NPT female inlet fits standard air lines
Specifications
| Brand | SPEEDAIRE |
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Questions about this item
At what point does the 0.8 hp motor hit its sustained-use limit?
The motor is rated for continuous operation up to 10,000 RPM with a variable-speed range of 9,000 to 11,000 RPM.
How much noise, heat or air does it draw when running all day?
The heavy-duty angle grinder runs on compressed air at 1/4 in NPT female inlet; exact CFM and decibel figures are not supplied.
What compressor fittings must I already own for it to connect?
You need a 1/4 in NPT male fitting and an air hose that can supply the required pressure for the 1/4 in NPT female inlet.
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