MAKITA GA4550R
110v Angle grinder - 4.1/2" (115mm)
- 1200 Watt
- No load speed: 11000rpm
- Anti restart function
- Soft start
- 1200 Watt
- No load speed: 11000rpm
- Anti restart function
- Soft start
- 1200 Watt
- No load speed: 11000rpm
- Anti restart function
- Soft start
GA4550R
The GA4550R is a 115 mm corded angle grinder from Makita, equipped with a powerful motor and safety-enhancing features for reliable cutting and grinding. It includes a paddle switch, soft start, and anti-restart function, all in a compact, ergonomic design.
Key Features:
• Power Input: 1,300 W
• Disc Diameter: 115 mm
• No-Load Speed: 11,000 rpm
• Paddle Switch (Deadman): Immediate shut-off for safety
• Soft Start: Reduces start-up shock
• Anti-Restart Function: Prevents accidental start-up
• Tool-less Wheel Cover: Quick and easy adjustment
• Labyrinth Construction: Shields motor and bearings from dust
• Double Insulation: Electrical safety
• Side Handle: Mountable on either side
• Supplied With: Grinding wheel, side handle, wheel guard, and wrench
Technical Specifications:
• Spindle Thread: M14
• Bore Size: 22.23 mm
• Max Wheel Thickness: 7.2 mm
• Max Cutting Depth: 30 mm
• Weight (without cable): 2.4 – 2.8 kg
• Dimensions (L × W × H): 325 × 130 × 117 mm
• Cable Length: 2.5 m
• Sound Pressure Level: 94 dB(A)
• Sound Power Level: 102 dB(A)
• Vibration Level (Surface Grinding): 7.0 m/s²
• Vibration Level (Disc Sanding): 2.5 m/s²
Alternative: GA4540R01
Also a 115 mm model, this version features a slightly lower 1,100 W motor, soft start, and Makita’s SJSII anti-vibration system — offering smoother operation and a longer 4.0 m cable.
An introduction to angle grinders: Angle grinders have a wide variety of uses amongst, for example, engineers, stone masons, welders, bricklayers & scaffolders. The grinding disc is mounted on a head which sits at right angles to the motor's drive shaft. They are occasionally referred to as disc or side grinders. Cordless angle grinders are concentrated at the smaller disc diameter end of this range. Click here to see all our grinders
To choose between angle grinders: Disc diameter is the key choice to make when selecting an angle grinder. They range in disc diameter size from 4' (100mm) - 9' (230mm) with the 4.1/2' (115mm) & 9' (230mm) grinders being the most popular choices. Smaller grinders rotate the discs at a higher speed. 4.1/2' is one of the most popular disc diameter choices. Click here to see all our angle grinders
To make sure you've got the right angle grinder - 4.1/2' (115mm): Choosing your power source: 240v tools are used with normal mains power whilst 110v tools are used on construction sites for safety reasons.
Click here to see all our angle grinder - 4.1/2' (115mm)


- 1 year warranty can be extended to 3 years by registering the tool online within 30 days of purchase, subject to the following conditions:
- the tool is CE marked and was purchased on or after 1st July 2012
- the tool is not an Air Compressor/ Air Tool, a Battery/ Charger, an Accessory, or a Petrol or Production Tool - To register your tool for extended warranty click here
- Warranty claims: Please request a collection from Makita using their returns form. Alternatively, you can speed the process up by taking the tool to your nearest approved Makita Area Service Agent. You can find your nearest agent here. When searching for your nearest agent on the website you will need to select the 'Service - Electric' tick box for a power tool warranty claim, or the 'Service - Garden Machinery' tick box for a garden tool warranty claim. Please contact Howe Tools should you need any assistance.
- You can order until 8pm for free next working day delivery to nearly all of England and Wales. For locations further from our hub, our cut off is 5pm. Some harder-to-reach locations may take an extra day. More info »
- For most orders we use a premium carrier that notifies you of a one hour timed delivery slot and sends text updates.
- If you change your mind within 30 days of buying a tool, not a problem (assuming the tool has not been used and is in its original packaging) - call us on 0333 004 3000 or email us at [email protected] and we’ll contact you to arrange collection. Once the tool is received back, we will refund the cost of the tool less a £6 collection charge.
- If the tool is faulty within 30 days of buying it, we will arrange for its collection at no cost to you and supply a replacement.
- If the tool is faulty after 30 days of buying it, and before the expiry of the manufacturer’s warranty, we will guide you through the manufacturer’s warranty process.