Ergonomic at 4.8kg for continuous use, yet more powerful than the legacy FEIN MSfo-852-1d (1900W).
| Model | HGC-3902 |
|---|---|
| Voltage | 3 Phase 200V |
| Frequency | 300 Hz |
| Ampere | 9.0A |
| Power Input | 2,600 W |
| 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) |
For decades, the global market for high-frequency metalworking equipment has been dominated by a few legacy brands like FEIN and Bosch. However, with FEIN discontinuing certain lines and Bosch facing supply chain delays and rising parts costs, foundries and casting plants are left with aging machines, scarce accessories, and exorbitant maintenance fees. Traditional pneumatic and standard electric angle grinders simply cannot withstand the massive workloads and continuous operations required in these environments.
The FUJI 300Hz High-Frequency Angle Grinder (Model: HGC-3902) was engineered specifically to solve this industry-wide crisis. Designed for heavy-duty casting processing, this 180mm (7-inch) grinder delivers a robust 2600W of rated power. Manufactured with artisanal precision in Japan, the HGC-3902 provides a stable, durable, and highly efficient solution for modern foundry equipment needs.
When upgrading your facility, the HGC-3902 stands out as the premier high frequency power tools on the market.
The HGC-3902 is the definitive choice for cast iron grinding equipment. 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.
Where standard hardware tools burn out, this industrial grinder machine excels. It is built for the high torque, extreme durability, and rigorous dust-protection required in continuous, large-scale production. It is a cornerstone for modern metal fabrication tools, ensuring that your foundry operates without frustrating equipment bottlenecks.
As a leading Japanese manufacturer, we know that the tool is only as good as its abrasive. For heavy-duty foundry applications, we highly recommend pairing the HGC-3902 with our FUJI Super F2 180*7mm grinding wheels, crafted with ultra-hard 24S premium abrasives for economical durability. For maximum efficiency on gray cast iron, our Super Z series 180*6mm wheels (utilizing zirconia alumina and silicon carbide) are the superior choice. Produced via a unique Japanese hot-pressing process, these wheels guarantee longevity. Partnering with the best grinding wheel supplier ensures you get the ultimate combination of speed and cost-effectiveness.
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.
While the 2600W HGC-3902 is highly capable, it has slightly less power than the FEIN 3700W 230mm (9-inch) models. For ultra-heavy industrial grinding—such as using grinding discs to cut off casting sprues or aggressively grinding down thick reinforcing ribs—the HGC-3902 may feel slightly underpowered. We recommend using it primarily for surface grinding, or switching to dedicated cutting discs for separation tasks.
Looking ahead: To fulfill the demand for ultra-heavy-duty grinding applications & solutions, FUJI is actively developing a Japanese-made 230mm (9-inch) large angle grinder designed to directly compete with the 3700W tier. Expected to launch in 2027, it will be tailored specifically for the European and American heavy foundry markets.
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.
Our high-frequency models are manufactured in Japan and comply fully with JIS (Japanese Industrial Standards). We have applied for CB certification, and European CE certification is currently in progress to ensure full compliance for international markets.
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. Our 300Hz grinders utilize a high-speed asynchronous squirrel cage motor (similar in structure to a Brushless DC Motor). It does not rely on carbon brushes or commutators, resulting in higher efficiency, less maintenance, and better heat dissipation.
The primary advantage is that the machine does not lose speed under heavy load, maximizing your grinding efficiency. Furthermore, the 3-phase 200V power is safer for industrial environments, and the lack of carbon brushes greatly extends the motor's life.
With over 70 years of manufacturing excellence, FUJI GRINDING WHEEL stands alone as the only manufacturer in Japan that produces 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 HF Power Tools Categories to find the perfect equipment for your needs.
Have questions about specifications, bulk pricing, or arranging a trial? 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.
