Features
- Spindle lock offers easy and stable wheel replacement.
- “Hign power, high torque” High performance grinder keeps constant speed even under load providing stable grinding operation.
- “Compact and stylish aluminum body” Small body reachs tight spots where conventional grinders are not able to reach. this ultralight grinder reduces operator’s fatigue.
- “High power grinder is designed for quiet operation” Its silencer filter keeps the noise level to a minimum.
Specifications
The throttle type is scheduled to be discontinued in March 2025.
For information on the successor model, please click [here].
| Product code | Throttle type : GR-M58（75）KS Lever type : GR-M58（75）KL |
|---|---|
| Grinding wheel diameter |
58×3.5×9.53 mm 75×5×9.53 mm |
| Use pressure | 0.6 MPa（6kgf/cm2） |
| Air consumption | 0.54 m3/min |
| No load speed of revolutions |
12,500 min-1 |
| Body mass ※Including Safety guard for 58mm and wheel nut for 2’1/4 wheel |
Throttle type ：0.54 kg Lever type ：0.59 kg |
| Full length | 160 mm |
| Diameter of grip part | 36 mm |
| Swich method | Throttle type or Lever type |
| Noise | 85 dB |
Article
The throttle type is scheduled to be discontinued in March 2025.
For information on the successor model, please click [here].
Package
Attachment
| Safety guard for 58mm |
 |
Safety guard for 75mm |
 |
| Wheel nut for 58mm |
 |
Wheel nut for 75mm |
 |
| Wheel washer for 75mm |
 |
Hexagon wrench (opposite side distance 5mm) Hexagon wrench for wheel nut removal |
 |
| Hexagon wrench (opposite side distance 3mm) Hexagon wrench for safety guard replacement |
 |
Air Plug (For round 1/4 inch) |
 |
| Oil (20ml) |
 |
adapter for 58mm wheel *Please attach the adapter as needed, when using the 58mm wheel. |
 |
Precautions
- Please read instructions carefully before use.
Downloads
Important Notice
Discontinuation of “Air Mini Grinder Kujin” Throttle Type and Introduction of Successor Model
We would like to inform you that the sale of the “Air Mini Grinder Kujin” throttle type (Model No. GR-M58(75) KS) will be discontinued once the current stock is depleted.
Thank you very much for your long-term support of this product.
We are pleased to introduce the successor model of the “Air Mini Grinder Kujin Mini” (Throttle Type: GR-M58KMS, Lever Type: GR-M58KML).
The new model features a high-load-resistant motor with a no-load rotational speed of 20,000 min⁻¹, making it the fastest in the industry.
For customers using the 75 mm outer diameter wheel, we recommend the “Air Mini Grinder Kujin” lever type, which will continue to be available.
Specification Change
Some specifications have been changed.
There is no change in performance.
Changes
Usable Wheel Size (mm)
Before and after changes
75X4X9.53（mm） ⇒ 75X5X9.53（mm）
There is no change in the OD. 58mm wheel size.
The machine you already have can continue to use.
It can also be used with our product “MINI SUPER BLACK 75×5×9.53(mm)“.
