Onpin OP-2850 / OP-2850A Air Angle Grinder (Rotate Type) - 4"/5" Pad, 0.63HP, 11000RPM, M10/M14 Spindle

Price:Contact Jade M-Tech

Category: Angle Grinder

SKU: OP-2850A

The Onpin OP-2850 / OP-2850A series air angle grinder (Rotate Type) features a 0.63 HP (470 W) motor power, operating under a standard air pressure of 90 psi (6.2 bar). The product supports two pad sizes: 4-inch (101 mm, M10×1.5 spindle thread, 11,000 rpm) and 5-inch (127 mm, M14×2.0 spindle thread, 10,000 rpm). Built with a rotary switch design for long-time operation and an auxiliary handle to reduce operator fatigue. Compatible with grinding wheels, rubber pads, and wire brushes, making it ideal for shipbuilding, sheet metal, foundry, and hardware machinery industries.

OP-2850A Series Models & Sizes:

OP-1850
OP-1850A
OP-2850
OP-2850A
OP-1850 4"
OP-1850A 5"
OP-2850 4"
OP-2850A 5"
Ref 1 Housing
Ref 2 Exhaust Deflector
Ref 3 Screw
Ref 4 Screw
Ref 5 Washer
Ref 6 Ball Bearing
Onpin air angle grinder
industrial pneumatic angle grinder
4 inch 5 inch air grinder
Onpin air tool replacement parts
heavy duty air angle grinder 0.63hp

Design file download links:

PDF file

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Description

Specification

What is Onpin OP-2850 / OP-2850A?

The Onpin OP-2850 / OP-2850A Air Angle Grinder is a handheld pneumatic power tool engineered to run on standard operating air pressure of 90 psi (6.2 bar). Utilizing a 0.63 HP pneumatic motor driving a bevel gear mechanism, it delivers rotational torque to grinding media for surface preparation, weld bead removal, metal cutting, and finishing in heavy industrial environments.

Key Features of Onpin OP-2850 / OP-2850A

Rotary switch design: Engineered for continuous long-time operation without operator trigger fatigue.
Vibration-dampening auxiliary handle: Reduces hand fatigue and enhances tool control during heavy grinding tasks.
High-output power: Delivers 0.63 HP (470 W) motor power for consistent stock removal under load.
Versatile accessory attachment: Fully compatible with grinding wheels, rubber backing pads, and wire cup brushes.
Compact & lightweight ergonomics: Weighs only 1.8 kg (3.96 lb) with an overall length of 235 mm (9.25 inches) for maneuverability in confined work areas.

Technical Specifications of Onpin OP-2850 / OP-2850A

Brand: Onpin
Model Numbers: OP-2850 (4" Pad) | OP-2850A (5" Pad)
Pad Size:
OP-2850: 101 mm (4 inches)
OP-2850A: 127 mm (5 inches)
Spindle Thread:
OP-2850: M10 × 1.5
OP-2850A: M14 × 2.0
Free Speed:
OP-2850: 11,000 rpm
OP-2850A: 10,000 rpm
Motor Power: 0.63 HP (470 W)
Air Consumption: 452 l/min (16 cfm)
Operating Air Pressure: 90 psi (6.2 bar / 6.3 kg/cm²)
Overall Length: 235 mm (9.25 inches)
Air Inlet Thread: 1/4 P.T
Minimum Hose Size: 9.5 mm (3/8 inch)
Net Weight: 1.8 kg (3.96 lb)

Industrial Applications of Onpin OP-2850 / OP-2850A

Shipbuilding: Weld seam blending, scale removal, and hull surface conditioning.
Sheet Metal Fabrication: Edge deburring, weld smoothing, and sheet metal preparation.
Foundry & Hardware Machinery: Flash removal on castings and heavy equipment maintenance.
Metal Products & Vehicle Modification: Surface finishing, rust removal, and automotive custom bodywork.