Makita 9557NB Elektro-Winkelschleifer Manual
PDF manual · 68 Pages
English
Advantages and Disadvantages
Advantages
- Compact 271 mm length and lightweight ~2.0 kg for comfortable handheld work.
- High no-load speed of 11,000 min–1 suitable for cutting, grinding and sanding tasks.
- Double insulation allows safe operation from standard sockets without earth wire.
- Supports a wide range of accessories: cut-off, diamond wheels, sanding discs, and wire brushes.
- Clear safety guidance and measured noise/vibration data for PPE and exposure control.
Disadvantages
- Not suitable for stone cup wheels — limited accessory compatibility for some jobs.
- Wheels limited to 115 mm diameter and 6.4 mm thickness, constraining cutting depth.
- Wired single-phase use only — no cordless convenience.
- Vibration and noise levels are significant; ear and hand protection required.
- Maintenance and repairs recommended through authorized service centers only.
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Frequently Asked Questions
The 9557NB is designed for a 115 mm depressed-center wheel with a maximum thickness of 6.4 mm and uses an M14 spindle thread.
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Yes. The tool is double-insulated (safety class II) and can be used from standard sockets without an earth wire, provided the supply voltage matches the nameplate and it is connected to single-phase AC.
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Always inspect accessories for damage, fit the correct guard, wear eye/ear/respiratory protection, use the side handle for two-handed control, avoid lateral pressure or forcing the tool, and stand clear of the accessory rotation plane to minimize kickback risk.
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Never use stone cup type wheels with this model; also avoid accessories that require liquid coolants, and only use accessories specifically designed and rated for the grinder's maximum speed.
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Mount the inner flange, place the wheel or disc, screw on the lock nut, press the shaft lock to prevent spindle rotation, then tighten the lock nut with the provided wrench. Ensure the guard covers the least amount of wheel exposed to the operator.
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Typical sound pressure is about 86 dB(A) with 97 dB(A) sound power (uncertainty ±3 dB). Vibration for surface grinding is ~7.5 m/s² and for disc sanding 2.5 m/s² or less (with stated uncertainties). Use hearing protection and consider exposure time.
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For safety and reliability, repairs, carbon brush inspections/replacements and other maintenance or adjustments should be done by Makita Authorized Service Centers using Makita replacement parts.
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Product Description
Makita 9557NB Elektro-Winkelschleifer — Makita 9557NB Elektro-Winkelschleifer Manual
The Makita 9557NB is a compact, wired angle grinder built for metal and stone work where water cooling is not used. Designed for grinding, sanding and cutting, the 9557NB sits between Makita's 9556NB and 9558NB models with a 115 mm depressed-center wheel capacity, M14 spindle thread and a no-load speed of 11,000 min–1. It’s a lightweight tool (approx. 2.0 kg) with a total length of 271 mm, double-insulated construction for use on single-phase AC circuits and safety class II protection.
Ergonomics and controls are straightforward: a slide switch with lock-on for continuous operation, a shaft lock for safe accessory changes, and a removable side grip for two-handed control. The grinder accepts a range of accessories — depressed-center grinding wheels, multi-discs, abrasive cut-off and diamond wheels, wire cup and bevel brushes, and backing pads for sanding — but only those specifically designed for the machine and rated at or above its maximum speed. Makita stresses proper wheel mounting (inner flange, lock nut tightened with the shaft lock engaged) and that the appropriate guard must always be fitted, especially with cut-off or diamond wheels.
Safety guidance in the manual is extensive: inspect accessories before use, wear eye, hearing and respiratory protection as needed, keep bystanders clear, avoid excessive lateral pressure or forcing the tool, and never use stone cup wheels. Kickback hazards are detailed with practical avoidance tips — firm two-handed grip, auxiliary handle use, body positioning, and careful work near edges/corners. The manual also emphasizes cleaning air vents, using specified flanges and nuts, and leaving maintenance and brush replacement to Makita service centers.
Noise and vibration data are provided: the 9557NB produces about 86 dB(A) sound pressure (97 dB(A) sound power) and vibration emissions of 7.5 m/s² for surface grinding and 2.5 m/s² or less for disc sanding (with stated uncertainties). These figures guide PPE choices and exposure assessment.
Assembly and operation sections cover guard installation, wheel and disc mounting, brush fitting, and safe cutting/grinding technique — including the recommended ~15° edge angle for grinding and the need to let wheels reach full speed before entering cuts. The manual lists optional accessories and advises using only Makita-specified parts. Routine upkeep focuses on cleaning vents and avoiding solvents; repairs should be handled by authorized service centers.
Notes:
- Rated for 115 mm depressed-center wheels with max 6.4 mm thickness and M14 spindle.
- Double-insulated for plug-and-play use without earth wiring.
- Observe PPE, guard orientation, and wheel compatibility to minimize risk of kickback or wheel failure.
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