The FUJI HDC-100 is a premier 4-inch (100mm) electric angle grinder, proudly Made in Japan. Unlike standard grinders that chase high wattage at the expense of longevity, the HDC-100 is engineered for balance, durability, and low vibration.
Powered by an optimized 740W motor, it delivers stable torque without the risk of overheating common in overpowered units. This design philosophy focuses on protecting the armature and extending the tool's lifespan, making it the preferred choice for professionals who need a reliable partner for continuous metal finishing and deburring.
| Model | HDC-100 |
|---|---|
| Wheel Diameter | 100 mm (4 inch) |
| Rated Power Output | 740 W |
| No Load Speed | 12,000 min⁻¹ |
| Carbon Brush Model | KD-10 |
| Weight | 1.6 kg |
| Safety Features | Double Insulation, Auto-Stop Brushes |
The HDC-100 is engineered for precision tasks where control matters more than brute force:
Enhance your productivity with our compatible accessories:
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.
