Description
Clear coat sanding scratches, body filler pinholes, and orange peel ruin custom paint finishes when sanders vibrate erratically. The JET JAT-750 R12 5In random orbital air palm sander produces glass-smooth featheredges with a 3/16-inch orbit diameter. Paint technicians achieve swirl-free body surfaces, yet fine sanding dust sucked into the exhaust port causes rapid rotor vane drag.
A precision-machined composite motor cylinder houses a balanced steel rotor shaft turning on double-sealed precision ball bearings. Five phenolic composite rotor vanes resist moisture wash-out from wet shop air systems. An integrated steel counterweight crankshaft balances pad rotation, cutting tool vibration down to negligible levels. The composite body housing absorbs drive flutter while insulating user palms from chilled air, and a 360-degree rotating exhaust port allows technicians to direct discharge air away from freshly sanded panels.
Field Hardware Performance Matrix
Commercial collision repair bays require random orbital palm sanders that run smooth without leaving circular swirl gouges in paint. The seven hardware specifications below outline the balanced construction of this five-inch pneumatic sander.
- 12000 RPM free speed strips clear coats and levels body filler panels with speed
- 3/16-inch random orbital stroke creates smooth featheredges without aggressive swirl marks
- Precision balanced steel counterweight stops housing vibration to prevent user hand numbness
- Phenolic composite rotor vanes maintain high motor torque under firm sanding pad downforce
- Composite motor housing insulates operator hands from cold compressed air temperatures
- Accepts standard 5-inch hook and loop sanding discs for fast abrasive grit changes
- Rear exhaust deflector routes air discharge away from delicate automotive primer coats
Dyno Bench Load Telemetry
Dyno pull testing records 12000 RPM free speed that bogs to 9800 RPM under firm downward hand pressure. The air motor draws 4 CFM at free spin and jumps to 16 CFM at 90 PSI dynamic under full sanding friction. Supplying air across a 50-foot 3/8-inch hose produces an 8 PSI dynamic line pressure drop. Adiabatic cooling brings exhaust temperatures down to 33°F during extended surface leveling passes. Sound output measures 78 dBA.
Field Service Operational Directives
Placing extreme body weight onto the sander will crush the bearing carrier and cause severe orbital pad stall. Do not run this finishing tool on unconditioned air lines contaminated with water droplets, as moisture ruins the composite cylinder bore. Never sand drywall compounds without a vacuum capture attachment. Maintain the random orbital sander through these field directives.
- Apply three drops of ISO VG 32 pneumatic lubricant into the inlet fitting before each shift
- Blow sanding dust from the pad housing each day using low-pressure dry shop air
- Inspect the hook and loop pad face each week for heat deformation or worn grip fibers
Commercial Warranty Package Inventory
JET supports this random orbital palm sander with a 3-Year limited warranty covering defective parts and factory assembly errors. The package includes the 5-inch air palm sander, a 5-inch hook and loop sanding pad, a pad removal wrench, and an illustrated technical instruction manual.
