Optimized for Metal and Stainless Steel:
The FUJI Shirasagi Cutting Wheel solves a common industrial problem: cutting protruding bolts and studs completely flat. Unlike standard flat discs where the grinder's locking nut prevents close contact, the Shirasagi features a unique Special Depressed Center.
This design allows the locking nut to sit inside the wheel's depression, enabling the abrasive surface to make full, flush contact with the workpiece. Ideal for orthogonal cutting, it delivers high workability with minimal burn and burr.
Diagram: The depressed center allows the lock nut to sit flush, enabling root cutting.
Compared to standard discs, the Shirasagi series offers superior efficiency on SS400 Steel Shafts (12mm dia).
| Metric | FUJI Shirasagi | Standard Disc | Advantage |
|---|---|---|---|
| Cutting Time | Fast (Low Resistance) | Slow (High Friction) | 30% Faster |
| Burr Formation | Minimal | Heavy | Cleaner Finish |
| Flush Capability | Yes (0mm) | No (>3mm gap) | Perfect Flush Cut |
Available in two variations to suit your specific needs: 1mm (Ultimate Speed) and 2.4mm (Ultimate Durability).
Best for: Rapid cutting of thin metals, stainless steel sheets, and precise bolt trimming.
| Dimensions (mm) | Spec / Grade | Max Speed | Package |
|---|---|---|---|
| 105 x 1.0 x 15* | AZ60P BF | 80 m/s | 10 pcs / 200 carton |
*Note: 15mm arbor hole can be modified to 16mm upon request for export markets.
Best for: General steel cutting, heavy bolt removal, and tasks requiring higher side-load resistance.
| Dimensions (mm) | Spec / Grade | Max Speed | Package |
|---|---|---|---|
| 105 x 2.4 x 15* | AZ36R BF | 80 m/s | 10 pcs / 200 carton |
*Note: 15mm arbor hole can be modified to 16mm upon request for export markets.
A: Standard flat discs hit the surface with their lock nut before the wheel cuts flush, leaving a protruding stub. The Shirasagi's recessed center hides the nut, allowing you to cut the bolt completely flush with the surface.
A: Yes. The 1mm version (AZ60P) is particularly excellent for stainless steel as it cuts cool and prevents heat discoloration.
A: It fits standard 4-inch (100mm/105mm) angle grinders. We offer standard 15mm bore holes, but we can customize to 16mm for international compatibility.
Always ensure the disc is properly seated. Even though Shirasagi is double-reinforced, always use a safety guard and appropriate PPE (gloves, eye protection) when performing flush cuts.
FUJI Grinding Wheel specializes in solving specific industrial challenges through Japanese engineering. The Shirasagi series is our answer to the demand for precision flush cutting.
Need to cut flush? Contact us today for a quote or browse our full Cut-Off Wheel Catalog.
Choosing the correct abrasive wheel is critical for both operational efficiency and JIS-compliant safety. Fuji Grinding Wheels are engineered with precise technical markings to ensure the perfect match for your specific material and machine requirements.
For professional export markets, always verify the Peripheral Speed (m/s) compatibility. Fuji wheels are designed to exceed JIS Burst Speed factors, but operating at the recommended R.P.M. ensures the longest tool life and cleanest cut.
Note: Mismatched grit or hardness can lead to excessive heat buildup, affecting the workpiece's structural integrity.
Global Maintenance Standard: To maintain the high safety factor of Fuji wheels, avoid exposure to excessive humidity and chemical solvents during storage. Proper care preserves the resinoid bond's strength, crucial for high-load industrial applications.
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.
