Bosch GKF 12V-8 Professional Straight die grinder 1300 RPM Black, Blue, Red

The Bosch GKF 12V-8 Professional Straight Die Grinder is a compact battery-powered tool designed for precision work in confined spaces. Equipped with a brushed motor, the grinder delivers a maximum idle speed of 1300 RPM and accepts accessories via an 8 mm collet. Its dimensions — 80 mm wide, 144 mm deep and 252 mm high — and a sound pressure level of 71 dB make the tool suitable for tasks that require controlled removal, fine shaping and detailed finishing where maneuverability and a small form factor are important.

Advantages

The straight die grinder combines a compact design with a battery-operated platform to enable cordless operation and freedom of movement. A brushed motor provides consistent rotational speed up to 1300 RPM for light to medium precision grinding and shaping. The 8 mm collet accepts common rotary accessories for cutting, grinding, deburring and polishing, while the moderate sound pressure level of 71 dB helps maintain a manageable noise environment on site or in the workshop.

Suitable for

• Deburring and removing small material build-ups on metal or plastic parts
• Precision grinding and shaping in tight or hard-to-reach locations
• Surface preparation and finishing before welding or painting
• Polishing and smoothing edges on components and fixtures

Key specifications

• Motor type: brushed motor
• Maximum idle speed: 1300 RPM
• Collet diameter: 8 mm
• Power source: 12 V battery
• Sound pressure level: 71 dB
• Dimensions (W × D × H): 80 mm × 144 mm × 252 mm

How to use

Fit a compatible 8 mm accessory into the collet and tighten securely before switching on the tool. Use an appropriate 12 V Bosch battery pack that matches the tool's battery interface and check battery charge level prior to work. Hold the grinder with a firm, controlled grip and operate at steady pressure, allowing the motor speed to perform the cutting or sanding action rather than forcing the accessory. For best results, select accessories designed for the material and task, and allow the tool to cool periodically during extended use.

Recommendations

Wear appropriate personal protective equipment such as safety glasses, hearing protection and gloves. Secure the workpiece and work at moderate speed settings for delicate operations. Regularly inspect accessories for wear and replace worn bits to ensure safe, consistent performance.