The FUJI HGC-250Ⅱ High Frequency Angle Grinder represents a paradigm shift in industrial grinding efficiency. Engineered for durability and operational agility, this 4-inch (100mm) powerhouse is designed to meet the rigorous demands of modern foundries, shipyards, and heavy metal fabrication.
The HGC-250Ⅱ uses a brushless squirrel-cage asynchronous induction motor and requires a matching high-frequency supply. Select the exact voltage and frequency according to the tool nameplate.
| Model | Wheel Size (mm) | No Load Speed (min⁻¹) | Power Supply | Current | Power Cons. | Weight | Spindle |
|---|---|---|---|---|---|---|---|
| HGC-250Ⅱ | 100 × 6 (4) × 15 | 8700 / 9000 | 200V / 240-250Hz | 2.4 A | 500 W | 2.0 kg | M10 × 1.5 × 9.0 mm |
| Cord / plug | 5 m cord with 4-pole plug; confirm connector compatibility | ||||||
The HGC-250Ⅱ is the preferred choice for sectors requiring rapid metal removal and demanding industrial tasks:
A: The brushless induction motor is designed for operation with a matching high-frequency supply. With a 100 mm wheel, the listed no-load speeds of 8700 / 9000 min⁻¹ correspond to about 45.6 / 47.1 m/s. The catalogue reference to 72 m/s concerns compatible wheel speed capability, not a constant operating speed under load.
A: The catalogue lists a wheel and spanner as accessories. Confirm the supplied wheel specification with your order. For alternative abrasives, match the approved dimensions and speed rating.
A: No. You must use a High Frequency Generator (Inverter) to convert your power to 3-phase 200V 250Hz. Connecting directly to 50/60Hz power will damage the motor.
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.
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.
