- Home/
- Category/
- Pneumatic Tools Onpin/
- Air Die Grinder
/ Micro Air Grinder Onpin OP-191K - 3mm Chuck Size, 35000 RPM, 1/4 P.T Inlet, 0.28kg
Micro Air Grinder Onpin OP-191K - 3mm Chuck Size, 35000 RPM, 1/4 P.T Inlet, 0.28kg
The Onpin OP-191K pneumatic micro grinder is a compact industrial power tool designed for precision finishing, operating under a standard air pressure of 90 psi (6.2 bar / 6.3 kg/cm²). Featuring a 3 mm chuck size, it delivers a free speed of 35,000 rpm for efficient deburring, detail grinding, and surface polishing. Measuring 130 mm (5.12 inches) in overall length, weighing just 0.28 kg (0.62 lb), with a 1/4 P.T air inlet, 1/4 inch (6.35 mm) hose size, and an air consumption of 127 l/min (4.5 cfm), this tool provides exceptional maneuverability for high-precision mechanical applications.
- OP-191K
- OP191K
- OP 191K
- OP-191K series
- OP-191K model
- micro air grinder 35000 rpm
- Onpin pneumatic pencil grinder 3mm
- high speed air die grinder 1/4 P.T inlet
- light hand air micro grinder for mold finishing
- industrial air pencil grinder 127 l/min
Design file download links:
Other fileDescription
Specification OP-191K
The Onpin OP-191K pneumatic micro air grinder is a compact industrial pencil-type grinding tool operating on a standard compressed air supply of 90 psi (6.2 bar / 6.3 kg/cm²). Designed for high-precision mechanical finishing, it features a standard 3 mm chuck size and delivers a free speed of 35,000 rpm. Weighing only 0.28 kg (0.62 lb), this lightweight tool offers maximum control for deburring, detailing, and fine polishing in tight or hard-to-reach areas.
Key Features of Onpin OP-191K
- 35,000 rpm Free Speed: Delivers consistent rotational speed for precise surface finishing and detailed detail grinding.
- 3 mm Standard Chuck Size: Accommodates a wide range of small carbide burs, mounted points, and polishing accessories.
- Ultra-Compact Pencil Design: Weighs just 0.28 kg with an overall length of 130 mm (5.12 inches) to reduce operator fatigue during prolonged use.
- Standard Pneumatic Connections: Equipped with a 1/4 P.T air inlet and designed for 6.35 mm (1/4 inch) air hoses for seamless workshop integration.
- Efficient Air Consumption: Operates at an air consumption rate of 127 l/min (4.5 cfm) for energy-efficient operation across standard air compressors.
Technical Specifications of Onpin OP-191K
- Brand: Onpin
- Model: OP-191K
- Operating Air Pressure: 90 psi (6.2 bar / 6.3 kg/cm²)
- Chuck Size: 3 mm
- Free Speed: 35,000 rpm
- Air Consumption: 127 l/min (4.5 cfm)
- Overall Length: 130 mm (5.12 inch)
- Air Inlet: 1/4 P.T
- Net Weight: 0.28 kg (0.62 lb)
- Hose Size: 6.35 mm (1/4 inch)
Industrial Applications of Onpin OP-191K
- Mold and Die Making: Repairing, deburring, and high-precision surface polishing for plastic injection molds and stamping dies.
- Precision Mechanical Fabrication: Deburring sharp edges and cleaning machined parts following CNC milling or turning.
- Electronics & Small Part Servicing: Engraving, detailing, and fine finishing of small metal components requiring intricate accuracy.
