The FUJI HIC-3802 High-Frequency Straight Grinder is not just a replacement tool; it is an industrial upgrade. Engineered to fill the void left by European brands scaling back 300Hz production, the HIC-3802 is a robust evolution of the legendary HIC-802.
Designed for high-precision metal grinding in confined spaces such as pipe interiors, deep recesses, and welded seams, the HIC-3802 offers seamless compatibility with standard 200V/300Hz high-frequency power sources. Its slender profile and exceptional maneuverability make it the tool of choice for deburring, smoothing, and finishing where conventional angle grinders cannot reach.
Demonstration: Precision grinding in confined foundry spaces.
Based on the official HIC-3802 instruction manual, these specifications confirm the tool's readiness for heavy industrial cycles.
| Model | HIC-3802 |
|---|---|
| Voltage / Frequency | 3-Phase 200V / 300Hz |
| Power Input | 1,600 W |
| Amperage | 6.0 A |
| No-Load Speed | 18,000 min⁻¹ (RPM) |
| Wheel Capacity | Max 50mm diameter (Must be rated 50m/s or higher) |
| Net Weight | 4.7 kg (without cord) |
| Standard Accessories | Spindle Lock Wrench (17mm), Collet Chuck Lock Wrench (12mm), Side Handle |
High-frequency tools operate differently from standard grinders. To ensure safety and longevity, strict adherence to these manual-verified protocols is required.
Before use, you MUST confirm the motor rotates in the direction of the arrow mark on the head. Using the grinder in reverse may cause the collet chuck to loosen and the grinding wheel to detach at high speed.
Correction: If rotating in reverse, swap any 2 of the 3 power conductors (Black, White, Red) in the plug to correct the phase.
Improper mounting leads to dangerous vibration. Follow these steps derived from the instruction manual:
To maintain peak performance in dusty foundry environments:
Do not force the tool. The high speed (18,000 RPM) does the work. Heavy pressure will reduce rotational speed, overheat the motor, and produce a poor finish. Use the tool's own weight and light contact pressure for optimal results.
Fig 3. Precision grinding with mounted wheels in a fabrication facility.This tool requires a dedicated High-Frequency Generator or Converter outputting 200V/300Hz.
NEVER plug this directly into a standard wall socket (50/60Hz), as it will burn out the motor instantly.
HF Generator (FUJI don't supply 300Hz Converter)
Required for 200V/300Hz conversion.
Output/Extension Cable
Heavy-duty 4-core cabling.
While physically possible, it is not recommended. The tool is optimized for 300Hz. Running it at 250Hz will reduce the RPM from 18,000 to approximately 15,000, significantly lowering efficiency. Always verify your generator's specs matches 300Hz.
Using a wheel larger than 50mm increases peripheral speed dangerously beyond the safety limit, risking wheel explosion. It also overloads the motor, leading to potential burnout.
For heavy-duty grinding, yes. The high torque of the 1600W motor requires two-handed operation for maximum safety and stability.
With global shortages of high-frequency tools, stock is limited. Ensure your foundry or shipyard maintains peak productivity.
Explore other High-Frequency Tools.
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.
