Confirm the machine nameplate, operating limits and approved accessories before installation.
| Model | HGC-3902 |
|---|---|
| Voltage | 3 Phase 200V |
| Frequency | 300 Hz |
| Ampere | 9.0A |
| No-Load Speed | 8,400 min⁻¹ |
| Wheel | Max φ180*8*22.23mm (80m/s) |
| Net Weight | 4.8kg (without cord) |
| Standard Accessories | Lock Nut Wrench (1pc), Grinding Wheel (1pc), Side Handle (1pc), Manual (1 copy) |
The FUJI HGC-3902 is a 300Hz high-frequency angle grinder for foundry fettling and industrial surface grinding. It requires a compatible three-phase 200V/300Hz power supply and must not be connected directly to ordinary 50/60Hz mains.
This 180mm (7-inch) model is intended for casting surface finishing and related grinding operations. Select the tool, abrasive and operating conditions together, and confirm the exact machine ratings against the nameplate and operating manual.
| Parameter | Specification | Benefit |
| Model | FUJI HGC-3902 | Heavy-Duty 7-Inch (180mm) Series |
| Motor Type | 300Hz Brushless Induction Motor | Low maintenance; routine inspection and servicing required |
| Weight | 4.8 kg | Tool weight; assess handling for the intended task |
| Grid Power | 3-Phase 200V / 300Hz | Verify supply output, capacity and connector compatibility |
When upgrading your facility, the HGC-3902 stands out as the premier high frequency power tools on the market.
Designed for Heavy Casting Fettling
The FUJI HGC-3902 high-frequency grinder solves extreme metal-removal challenges in foundries and steel fabrication. It is engineered specifically for foundries, casting plants, and heavy metal forming enterprises that require aggressive deburring, post-weld processing, rust removal, and cast molding surface refinement. Material-removal rate and grinding time depend on the casting material, abrasive, contact pressure and operating conditions. Evaluate performance through a controlled trial on your own workpieces.
Core Applications:
Foundry Fettling: Gate and riser removal for gray and ductile iron; surface defect smoothing.
Structural Steel & Fabrication: Heavy weld seam dressing, beveling, and deep rust removal.
Machinery Manufacturing: Surface refinement for large cast and forged components.
For cast iron and steel applications, provide the material grade, surface condition and required finish so that the tool and abrasive can be selected together.
Choose an abrasive for the workpiece and operation only after confirming the exact SKU, wheel dimensions, mounting arrangement, guard requirements and maximum operating speed. The wheel must be rated for at least the maximum operating speed of the tool. Explore the Super F2 range and depressed-center grinding wheel range, then ask us to verify the specific combination before ordering. Diameter alone does not establish compatibility.
When your foundry operations require precision work—such as removing casting flash, finishing internal cavities, or grinding within highly confined spaces—our HIC-3802 High-Frequency Straight Grinder delivers the perfect blend of maneuverability and power.
Beyond our heavy-duty angle grinders, we offer a comprehensive portfolio designed to accommodate diverse industrial scenarios. This includes our nimble 700W light-duty high-frequency straight grinders HIC-250Ⅱ, as well as versatile 5-inch high-frequency grinder models. Whether you are handling intricate metalworking tasks or require specialized tooling for unique casting challenges, FUJI provides the exact equipment configurations to meet your specific application needs.
Use this model only for operations and accessories approved in its manual. Do not use a grinding wheel for an unapproved cutting operation, or assume that changing to a cut-off wheel alone makes the machine suitable for cutting. Confirm the required tool and guarding for separation tasks.
FEIN is a globally recognized pioneer. While FUJI's global brand awareness is growing, we are a highly respected Japanese power tool brand. The HGC-3902 is proudly "Made in Japan," offering trusted, industrial-grade quality and stability.
To better serve our global clients, FUJI established a sales and service company in Hungary in 2026 to provide rapid support to the European market. Customers in other regions can easily purchase and receive support through our global sales partner in Japan, Pio-ship.
Absolutely. European customers can contact our Hungary office to arrange a trial unit. For other regions, please contact our Japanese headquarters, and our service team will work with you to arrange a suitable trial plan.
Request the current model-specific conformity documentation for your destination market before ordering. Certification or application status for another model must not be assumed to apply to the HGC-3902.
Yes. Our European office in Hungary stocks a comprehensive inventory of daily consumables and spare parts—including rotors, stators, switches, and shock-absorbing handles—ensuring rapid repair and replacement for our EU industrial clients.
Because this is heavy-duty industrial equipment, lifespan varies significantly based on environmental conditions, operator technique, workload intensity, and daily maintenance. Therefore, it is difficult to define a standard lifecycle or blanket warranty compared to household tools. However, if you encounter any operational issues, our team is always ready to assist you.
No. The HGC-3902 uses a brushless squirrel-cage induction motor. It does not require carbon-brush replacement, but routine inspection and maintenance remain necessary.
The HGC-3902 is designed for industrial grinding where compatible high-frequency power is available. Compare tools using the same workpiece, abrasive and test conditions rather than assuming a fixed productivity gain.
With over 70 years of manufacturing excellence, FUJI GRINDING WHEEL supplies both industrial-grade grinding wheels and power tools. We are a proud Japanese brand with our own dedicated manufacturing facilities, giving us complete quality control from the abrasive formulation to the motor engineering. Because we build both the tool and the consumable, we understand the exact synergy required to achieve maximum material removal rates. Choosing FUJI means investing in a holistic, highly optimized system designed to drastically improve your workflow and bottom line.
Ready to upgrade your foundry's efficiency? View the HGC-3902 today and experience true Japanese industrial reliability.
If you require solutions for different applications, we invite you to browse our comprehensive high-frequency power tools to find the perfect equipment for your needs.
For a compatibility review or quotation, send your existing tool and power-supply nameplates, workpiece material, required operation and quantity. Please do not hesitate to Contact Us. Our global support team is ready to assist you.
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.
