The NSK Impulse NA90-230 Pneumatic Grinder brings professional-grade performance to your finishing applications. Featuring a 90° angled head, this compact tool is built for precision work on mould tools, die surfaces, and complex contours.
Specifications
- Speed: 23,000rpm
- Weight: 190g
- Air Consumption: 160NL/min
- Drive Air Pressure: 4-6kg/cm2
- Hose Length: 1.5m
- Collet: 3mm
Key Features
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High-speed rotation: Up to 23,000 rpm, maintaining consistent speed even under variable loads thanks to its rotary vane motor design
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Lightweight design: Weighs just 190 g, allowing fatigue-free handling during extended use
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Stable torque performance: The Impulse motor ensures minimal speed loss under load
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Twist-free hose connection: Reduces hose drag and operator fatigue with ergonomic Hose design
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Low noise exhaust: Built-in silencer and rear-exhaust design help reduce operating noise levels
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Adjustable speed control: Use the twistable on/off ring at the grip end to fine-tune speed or stop instantly
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Air consumption & pressure: Efficiently runs on 165 NL/min at 0.4–0.6 MPa (4–6 kg/cm²)
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3 mm collet included, plus essential accessories like Wrenches, Silencer, Hose, and Grindstone Arbor
Applications
This versatile tool is perfect for:
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Polishing mould tools and dies with small wheels or Trucut stones.
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Working on flat or complex metal surfaces with self-adhesive or Velcro discs.
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Precise finishing tasks in tight or angled contours.
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Detailed work on prototypes, tooling, and fixture surfaces.
Looking For More?
- Velcro and Self Adhesive Discs/Rings – Browse abrasive and felt discs/rings in a range of sizes
- Hook & Loop and Self Adhesive Holders – Mount your discs/rings with a wide range of backing pads with a spindle
- AL-H1207F Airline Filter Kit – Lubricate, cool and extended tool life with this NSK specific filter kit
- Vitrified Mounted Grinding Points – The perfect grinding tool to complement this grinder
Frequently Asked Questions (FAQs)
Q: What makes the Impulse motor special?
A: Its rotary vane design delivers high torque and maintains speed under load, offering superior performance for demanding grinding tasks.
Q: How ergonomic is this tool?
A: Extremely. It’s light (190 g), has a twist-free hose connection to minimise drag, and includes a low-noise rear-exhaust silencer.
Q: What air supply do I need?
A: Requires approx. 165 NL/min at 0.4–0.6 MPa (4–6 kg/cm²). An airline kit is recommended to manage lubrication and temperature over long operations.
Q: What’s in the box?
A: Includes the NA90-230 air grinder, 3 mm collet (CHS-3.0), grindstone arbor, hose, silencer, plus wrenches (8×5 and 2x bar wrench K-212).
Q: Is speed adjustable?
A: Yes—speed is controlled by the ring throttle at the grip end, allowing smooth modulation or shutoff.
