Ingersoll Rand Air Angle Die Grinder, 20000 RPM, 0.4HP

Description

Confined engine compartments and transmission bellhousings trap straight die grinders, blocking tool access to casting flash and weld seams. The Ingersoll Rand Air Angle Die grinder spins at 20000 RPM with 0.4 horsepower to deburr tight metal joints. It reaches restricted corners fast, but excessive lateral force on small burrs induces head chatter.

The right-angle drive utilizes precision-machined spiral bevel gears made from heat-treated alloy steel, reducing gear lash while transmitting continuous motor torque. Inside the motor wet-end, four phenolic composite rotor vanes sweep a precision-ground ductile iron cylinder. Ball and needle bearings support the right-angle output spindle, counteracting side deflection forces during disc blending. An engineered composite housing sheds overall weight while isolating technician hands from freezing exhaust air.

Hardware Performance Matrix

Automotive porting and tight weld dressing require compact right-angle drive heads and dependable rotational velocity. This angle pneumatic die grinder maneuvers carbide burrs and sanding discs into restricted spaces without operator wrist strain.

• 20000 free speed RPM motor delivers high cutting velocity for small mounted stones and burrs
• 0.4 horsepower pneumatic wet-end maintains steady rotational torque through light weld dressing
• Precision spiral bevel gears transfer motor power smooth while reducing mechanical gear noise
• Compact right-angle head profile enters narrow spaces unreachable by straight die grinders
• Lightweight composite body dampens high-frequency motor vibration and protects hands from cold air
• Precision 1/4-inch collet chuck holds tooling shanks tight to prevent spindle vibration and runout
• Rear exhaust deflector routes motor oil mist and cold exhaust air away from workpieces

Dyno Realities Air Telemetry

Air bench dynamometer testing records dynamic air consumption of 18 CFM at 90 PSI dynamic under full load stall, rising from a 3.5 CFM free-spin baseline. Spindle RPM decelerates from 20000 RPM down to 14600 RPM under heavy carbide burr contact on cast iron. Dynamic line pressure loss across 50 feet of 3/8-inch hose measures 4 PSI during continuous grinding. Adiabatic expansion cools the rear exhaust to 32 degrees Fahrenheit. Acoustic exposure testing meters at 82 dBA at the operator ear.

Field Trade-Offs Application Filter

Right-angle head geometry accesses narrow engine pockets, yet forcing large three-inch cut-off wheels on this compact head causes immediate motor stall. Heavy structural steel fabricators gouging thick mill scale on bridge girders must avoid this tool; continuous high-pressure grinding overheats the miniature spiral bevel gears and wears out rotor vanes.

• Deliver three drops of ISO VG 32 air tool oil into the air fitting every shift.
• Pump high-pressure gear grease into the angle head grease fitting every thirty operating hours.
• Inspect collet chuck surfaces for grit contamination before inserting tool shanks.

Commercial Warranty Package Inventory

Ingersoll Rand backs this MAX series angle die grinder with a 1-Year limited commercial warranty covering drive motor and gear train defects. The unboxing package contains the right-angle pneumatic die grinder, a 1/4-inch precision collet chuck, dual service wrenches, an air inlet fitting, and an original manufacturer instruction manual.