High Efficiency: Powerful torque output delivers high working efficiency.
Specifications
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.
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.
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.
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.
Related Products
Enhance your productivity with our compatible accessories:
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.
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
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.
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
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.
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