Note: When exported to other countries and regions, we will make corresponding changes according to the local power grid electricity standards for our equipment and tool, please contact us to confirm the details in advance.
The FUJI KOSOKU HGC-802/902 High-Frequency Angle Grinder is an industrial-grade powerhouse engineered specifically for the most demanding environments, such as foundries, shipyards, and heavy metalworking plants. Unlike standard electric tools, these grinders operate on a 250Hz High-Frequency System (customizable to 300Hz), delivering a constant loaded speed of 5000–7000 RPM.
Designed for 180mm (7-inch) wheels, the HGC series features a fully encapsulated motor that resists dust and metal debris, ensuring exceptional longevity and minimal maintenance even in the harshest conditions.
Choose the right model based on your specific grinding application. The HGC-802 is optimized for High Torque (heavy pressure grinding), while the HGC-902 is designed for High Speed (cutting and finishing).
Note: These tools require a High-Frequency Inverter (Power Supply) to operate. They cannot be plugged into standard wall outlets.
The HGC-802/902 series is the preferred choice for heavy-duty sectors:
As one of the few global manufacturers still dedicated to producing high-frequency angle grinders compatible with 180mm discs, FUJI KOSOKU fills a critical gap in the market.
While other brands like FEIN or BOSCH reduce their high-frequency offerings, FUJI continues to innovate. The HGC-802/902 stands as a future-proof, robust solution for industrial users who refuse to compromise on power.
A: You need a High-Frequency Inverter that outputs 200V at 250Hz (or 300Hz depending on your model). Standard 50/60Hz power will not work and may damage the tool.
A: Yes, these grinders use standard 180mm (7-inch) wheels with a 22mm or 22.23mm arbor. However, ensure the wheel is rated for the tool's RPM (at least 7,600 RPM for safety).
Fuji products are manufactured following strict Japanese standard process requirements. Every wheel is engineered to meet or exceed JIS (Japanese Industrial Standards), such as JIS R 6242 and B 4051. Our core engineering logic prioritizes maximum operator protection by maintaining safety factors and burst speed capabilities that often surpass the highest industry benchmarks.
| Standard Region | Safety Factor (Burst Multiplier) | Safety Logic & Benchmark |
|---|---|---|
| FUJI (High Precision) | > 2.0x | Engineered to exceed JIS requirements for maximum reliability. |
| Japan (JIS R 6242) | 2.0x | Extreme Safety: A wheel rated at 80m/s must withstand a 160m/s burst test. |
| Europe (EN 12413) | $1.73x | Risk Balanced: Provides high safety redundancy for most industrial apps. |
| USA (ANSI B7.1) | 1.5x | Efficiency Focused: Relies on machine guarding and operational procedures. |
Abrasive Selection Guide

Selection of grains (A, WA, AZ, etc.) based on material hardness and grinding precision.
Warning Symbol Interpretation

Standardized safety icons for safe operation and protection guard usage.
When deploying Fuji high-performance tools in overseas markets, ensure that the regional power grid frequency and voltage match the tool specifications. To maintain the superior burst speed safety of Fuji wheels, store abrasives in a dry, temperate environment. Humidity can degrade the resin bond, potentially lowering the wheel’s resistance to centrifugal forces.
This product strictly complies with the Electrical Appliance and Material Safety Technology Standards (Noise Countermeasures), revised under the Ministry of Economy, Trade and Industry (METI) Ordinance No. 57.
*Official Enforcement Date: April 1, 2013. This ensures maximum electromagnetic compatibility (EMC) and operational stability in industrial environments.

Professional Note: For global industrial procurement, these Japanese METI standards ensure that Fuji tools meet high-level noise reduction requirements, critical for precision workshops across Europe and North America.
