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FUJI “KOSOKU" POWER TOOLS
  • Reliable Economical Portable Angle Grinder (HSD-100A) with Super F2 grinding wheel
  • Grinding Demostration for Angle Grinder (HSD-100A)
  • Reliable Economical Portable Angle Grinder (HSD-100A)
  • Portable Angle Grinder (HSD-100A) for cutting operation
  • Angle Grinder (HSD-100A) with Tsurugi cut off discs for cutting metal sheet
  •  FUJI Kosoku HSD-100A 4" angel grinder
  • Reliable Economical Portable Angle Grinder (HSD-100A) with Super F2 grinding wheel
  • Grinding Demostration for Angle Grinder (HSD-100A)
  • Reliable Economical Portable Angle Grinder (HSD-100A)
  • Portable Angle Grinder (HSD-100A) for cutting operation
  • Angle Grinder (HSD-100A) with Tsurugi cut off discs for cutting metal sheet
  •  FUJI Kosoku HSD-100A 4" angel grinder

Reliable Economical Portable Angle Grinder (HSD-100A)

No.Kosoku HSD-100A

Key Features

  • Compact Solid Body: Lightweight yet robust construction for easy daily use.
  • Access Narrow Spaces: Specialized 55mm small head design allows grinding in restricted areas.
  • Ergonomic Grip: 63mm x 62mm grip dimensions ensure a secure and comfortable hold.
  • Dust-Proof Durability: Improved rear case design protects internal components from dust.
  • Safety Assurance: Double insulation structure ensures safe operation.
  • High Efficiency: Powerful torque output delivers high working efficiency.

Specifications

Specifications of Reliable Economical Portable Angle Grinder HSD-100A
Global Export Note: When exported to other countries and regions, we will make corresponding changes according to the local power grid electricity standards for our equipment and tool. Please contact us in advance to confirm the details.
  • Reliable Economical Portable Angle Grinder (HSD-100A) with Super F2 grinding wheel
  • Grinding Demostration for Angle Grinder (HSD-100A)
  • Reliable Economical Portable Angle Grinder (HSD-100A)
  • Portable Angle Grinder (HSD-100A) for cutting operation
  • Angle Grinder (HSD-100A) with Tsurugi cut off discs for cutting metal sheet
  •  FUJI Kosoku HSD-100A 4" angel grinder
  • Description

  • Cautions

  • Electrical Symbol

Overview: The Compact Specialist

The FUJI HSD-100A ("Kosoku" Series) is a specialized handheld angle grinder produced by FUJI Group, a renowned Japanese tool manufacturer. Building on decades of expertise in hand grinding technology, the HSD-100A is designed for one specific goal: Accessibility.

With its ultra-compact body and high rotation speed (12,000 RPM), it is reliable, lightweight, and easy to hold. It excels in workshops and metalworking projects where standard, bulky grinders cannot reach. It effortlessly handles grinding and cutting tasks on carbon steel, stainless steel, and aluminum.

Fuji HSD-100A Compact Angle Grinder

Why Choose the HSD-100A?

📏 55mm Low Profile Head The defining feature of this model. The gear head height is reduced to just 55mm, allowing the tool to reach into tight corners, narrow pipes, and restricted spaces in shipyards and automotive frames.
🤲 63x62mm Compact Grip Designed for the human hand. The compact housing dimensions (63mm x 62mm) ensure a secure, wrap-around grip, significantly reducing operator fatigue during precision work.
🛡️ Rear Case Dust-Proofing Durability is key. The improved rear case design features a dust-proof structure that protects the internal motor and bearings from metal debris, extending the tool's service life.
⚡ High Efficiency Performance Despite its small size, it delivers powerful torque and a no-load speed of 12,000 RPM. It also features Double Insulation for safe operation without grounding.

Technical Specifications

Model HSD-100A
Wheel Diameter 100 mm (4 inch)
No Load Speed 12,000 min⁻¹
Grip Dimensions 63mm x 62mm
Head Height 55 mm
Safety Features Double Insulation, Dust-Proof Rear Case
Compatible Accessories Standard 100mm Discs, 4" Diamond Cutting Saw Blades
Specification table of Fuji HSD-100A
Global Export Note: When exporting to other countries, we customize the equipment (Voltage/Plug type) according to local power grid standards. Please contact us to confirm specific requirements in advance.

Versatile Applications

The HSD-100A is the "go-to" tool for detail work and restricted areas:

  • Confined Spaces: Grinding inside pipes, U-channels, and corners in ship hulls.
  • Metalworking: Deburring and finishing steel, special steel, and cast iron parts.
  • Maintenance: Rust removal and paint stripping in automotive repair.
  • Construction: Cutting tiles and masonry (with compatible diamond blades).

Frequently Asked Questions

Q: What makes the HSD-100A different from the HDC-100?
A: The HSD-100A focuses on "Compactness" and "Economy." It has a smaller head (55mm) specifically for accessing narrow spaces, whereas the HDC-100 focuses on heavier power and auto-stop brushes.
Q: Can this grinder use diamond blades?
A: Yes, the HSD-100A is compatible with standard 100mm (4-inch) abrasive wheels as well as diamond cutting saw blades for concrete, tile, and marble.
Q: Is it suitable for heavy industrial use?
A: Yes, it is an industrial-grade tool. However, for continuous, extremely heavy load grinding, we recommend our High Frequency series or the Heavy Duty HDC series. The HSD-100A is ideal for standard industrial tasks and precision work.

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.