Constant Speed, Maximum Productivity

FUJI “KOSOKU” High-Freq Unstoppable Power
  • Robust  7" (180mm) High Frequency Grinder | (HGP-4260)
  • Grinding work of HGP-4260 Grinder
  •  180mm High Frequency Grinder (HGP-4260)
  • High Frequency Grinder (HGP-4260) Size
  • high frequency grinder accessories
  • High Frequency Grinder (HGP-4260) Power Cord
  • Robust  7" (180mm) High Frequency Grinder | (HGP-4260)
  • Grinding work of HGP-4260 Grinder
  •  180mm High Frequency Grinder (HGP-4260)
  • High Frequency Grinder (HGP-4260) Size
  • high frequency grinder accessories
  • High Frequency Grinder (HGP-4260) Power Cord

Robust 7" (180mm) High Frequency Grinder (HGP-4260)

No.HGP-4260

Key Features: HGP-4260

  • Professional Grade: 400Hz High-Frequency angle grinder for heavy-duty applications.
  • Robust Power: Delivers high torque and efficiency compared to standard grinders.
  • Ergonomic: Features an anti-vibration handle and high-grip body for comfort.
  • Safety First: Equipped with Soft Start and a Quick Brake function.
  • Optimized Size: Specially matched with 180mm (7-inch) wheels for max productivity.

Quick Specifications

Specification Table of High Frequency Grinder HGP-4160/4260








Note:
When exported to other countries, we will customize the tool according to local power grid standards. Please contact us to confirm details in advance.

  • Robust  7" (180mm) High Frequency Grinder | (HGP-4260)
  • Grinding work of HGP-4260 Grinder
  •  180mm High Frequency Grinder (HGP-4260)
  • High Frequency Grinder (HGP-4260) Size
  • high frequency grinder accessories
  • High Frequency Grinder (HGP-4260) Power Cord
  • Description

  • Cautions

  • Electrical Symbol

Overview: The Heavy-Duty 180mm Specialist

The FUJI HGP-4260 High-Frequency Angle Grinder is engineered for extreme industrial environments where standard tools fail. Operating on a 400Hz High-Frequency System, this 180mm (7-inch) grinder delivers robust, non-stop power that maintains speed even under the heaviest grinding loads.

Specifically designed for user comfort, the HGP-4260 features an advanced Anti-Vibration Handle and a high-grip body, significantly reducing operator fatigue during long shifts in shipyards and fabrication plants.

HGP-4260 High Frequency Grinder in Action

Why 400Hz? The Power of No Speed Drop

Unlike standard 50/60Hz grinders that lose RPM when you press down, FUJI's 400Hz High-Frequency motor maintains a constant rotational speed. This results in:

  • 300% Higher Efficiency: Faster material removal rates.
  • Longer Wheel Life: Consistent speed prevents premature wheel wear.
  • Burnout Protection: The motor resists stalling even under maximum load.
Power Reduction Curve Comparison

Graph: The HGP-4260 maintains power output where standard grinders drop off.

Key Features & Advantages

⚡ 400Hz Robust Power Generates consistent high torque for aggressive material removal on steel, alloys, and composite surfaces without overheating.
🛡️ Operator-Centric Safety Equipped with a Soft Start function for smooth operation and a Quick Brake System that stops the wheel instantly when switched off.
✋ Anti-Vibration Technology The auxiliary handle reduces arm fatigue by up to 50% during extended use, complying with strict industrial health standards.
🏗️ Heavy-Duty Durability Built with a high-grip ergonomic body designed to withstand the harsh conditions of foundries and shipyards.

See It In Action

Technical Specifications

Model: HGP-4260 (High-Frequency Angle Grinder)

Performance Specs Physical Specs
Wheel Size 180 mm (7 inch) Weight 3.5 kg
Frequency 400 Hz (3-Phase) Length 309 mm
Voltage 200 V Height 110 mm
Rated Current 9.5 A Spindle Thread M10 (1.25)
Power Consumption 2600 W Cord Length Requires Output Cable
No Load Speed 8,000 min⁻¹ Compatible Wheel 180 x 6 x 22 mm
HGP-4260 Dimensions

Required System Configuration

The HGP-4260 is part of a high-frequency ecosystem. It cannot be plugged directly into a wall socket.

FKC-400H Inverter

1. Power Source (Required)
Must use FKC-400H Inverter to convert power to 400Hz/200V.


Extension Cord


2. Cabling (Required)

Connect via specialized 10m or 20m Output Cables or Extension Cords.

Ideal Applications

Perfect for industries where speed and precision are non-negotiable:

  • Shipyards: Heavy-duty grinding of hull welds and steel plates.
  • Metal Fabrication: Beveling, seam smoothing, and surface blending.
  • Construction: Re-cutting ferrous metals and concrete surfacing.
  • Welding Prep: Rapid slag cleaning and joint profiling.

Frequently Asked Questions (FAQ)

Q: What is the difference between HGP-4160 and HGP-4260?

A: The HGP-4260 is the more powerful model with a 2600W power consumption and 9.5A current rating, designed for heavier loads compared to the 4160. Both use 180mm wheels.

Q: Does the grinder come with a power cord?

A: It comes with a short lead but requires a dedicated Output Cable (sold separately) to connect to the High-Frequency Inverter.

Q: Can I use standard 180mm grinding wheels?

A: Yes, as long as the wheel is rated for high speeds (80 m/s or 8,000+ RPM). We recommend FUJI's Super F-II Premium Discs for best results.

About FUJI Grinding Wheel

With 70 years of Japanese manufacturing excellence, FUJI Grinding Wheel provides top-tier industrial solutions. Our High-Frequency series is the gold standard for efficiency in the heavy industry sector.

Need a quote for a complete High-Frequency System? Contact our support team today.

FUJI Industrial Quality & Safety Protocols

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 RegionSafety Factor (Burst Multiplier)Safety Logic & Benchmark
FUJI (High Precision)> 2.0xEngineered to exceed JIS requirements for maximum reliability.
Japan (JIS R 6242)2.0xExtreme Safety: A wheel rated at 80m/s must withstand a 160m/s burst test.
Europe (EN 12413)$1.73xRisk Balanced: Provides high safety redundancy for most industrial apps.
USA (ANSI B7.1)1.5xEfficiency Focused: Relies on machine guarding and operational procedures.

⚠️ Essential Safety Cautions & Operational Integrity

  • 1. RPM Compliance: Never exceed the maximum R.P.M. specified on the wheel. Using the sides of the wheels for grinding is strictly prohibited, as it compromises the structural integrity of the abrasive bond.
  • 2. Mandatory Idling: Allow the tool to idle for one minute before beginning work. If a new wheel has been mounted, an idle run of three minutes is required to ensure dynamic stability.
  • 3. Workpiece Stability: All materials must be securely fastened. Improperly secured workpieces can lead to vibration, wheel binding, and unsafe kickback forces.
  • 4. Arbor Hole Integrity: Do not modify or enlarge the metal center of the arbor hole. A proper fit is critical; a mismatched arbor causes eccentric rotation and dangerous vibration levels.
  • 5. PPE Requirements: Industrial-grade face and eye protection are mandatory at all times. Ensure all protective gear meets local safety compliance standards.
  • 6. Guard Protection: Protection guards are designed to contain fragments in the unlikely event of a wheel failure. Never operate tools or machinery with guards removed.

Applications of Abrasives & Usage Notes

Abrasive Selection Guide

FUJI Abrasive Selection Table

Selection of grains (A, WA, AZ, etc.) based on material hardness and grinding precision.

Warning Symbol Interpretation

FUJI Usage Symbols and Cautions

Standardized safety icons for safe operation and protection guard usage.

Professional Export & Maintenance Insight

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.

🛡️ Electrical Appliance & Safety Compliance

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.

How to Read Operational & Safety Symbols

Fuji Tool Safety Symbols Chart

Key Safety Indicators:

  • Double Insulation: Marked by the "square-in-a-square" symbol, indicating no grounding is required for safe operation.
  • Noise Suppression: Compliance with Ordinance No. 57 prevents interference with other electronic equipment.
  • Mandatory PPE: Visual cues for hearing, eye, and respiratory protection.

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.