The FUJI Super Tsurugi 115mm × 1.2mm T41 cut-off wheel is designed for 4.5-inch angle grinders used in professional metal fabrication, maintenance, construction, automotive repair, pipe work and general workshop cutting.
The 4.5-inch (115mm) size is undeniably the most popular specification for angle grinders in both European and American metalworking markets. Its thin 1.2mm profile is designed to reduce cutting resistance and material loss while maintaining a practical balance between cutting speed, disc stability and service life. Whether used for heavy industrial manufacturing or daily hardware retail, its compact size and exceptional maneuverability make it the top choice for countless cutting applications. However, the market is currently flooded with low-quality, counterfeited metal cut off wheels from Southeast Asia masquerading as famous brands. These cheap workshop-produced discs suffer from inconsistent batch quality, rapid wear, and severe safety hazards. At high rotational speeds, inferior wheels can easily crack, lose chunks, or burst completely, posing fatal risks to operators.
To eliminate these risks, FUJI introduces the "Super Tsurugi" 4.5-inch cutting disc for grinder. Manufactured entirely in our own facilities following strict Japanese standards, this 1.2mm ultra-thin disc perfectly balances aggressive cutting speed with outstanding durability. We utilize premium Saint-Gobain alumina abrasives and high-strength Sumitomo phenolic resin, reinforced with double-layer alkali-resistant fiberglass mesh. Complying with JIS R 6242 and JIS R 6212 standards, FUJI guarantees identical, top-tier performance from the first piece to the one-millionth piece.
When searching for the Best cutting disc for metal, safety and efficiency are paramount. Our resin bonded cut off wheels offer the following distinct advantages over low-cost competitors:
The following video is a related FUJI application demonstration using a smaller 4-inch cutting disc. It is included as practical cutting evidence for the abrasive system and application method, not as a claim that the exact 115mm × 1.2mm specification was used in the video. Watch the FUJI metal cutting application video on YouTube
The FUJI 4.5" T41 cut off wheel is a versatile powerhouse designed to slice through a wide variety of tough materials, including high-tensile carbon steel, structural steel, and stainless steel (INOX). It provides a safe, rapid cut with a smooth, flat finish, minimizing the need for secondary grinding or rework.
This cut off wheel for metal fabrication is widely adopted across multiple demanding sectors. In standard "Manufacturing" and "Metal Fabricating", it efficiently cuts metal sheets, rebars, and angle irons. It is also the preferred grinder cutting disc for automotive repair, heavy construction, plumbing, railway track maintenance, and shipbuilding. To discover more about our tailored manufacturing capabilities, explore our comprehensive metal cut off wheel solutions.
To achieve the title of the Best cutting disc for metalworking, precision engineering is required. Below are the exact specifications for our Super Tsurugi series. When operating an abrasive cutoff wheel, it is critical to match the disc's maximum RPM with your angle grinder's specifications to prevent dangerous over-speeding.
| Product Type | Dimensions (mm) | Dimensions (inch) | Material Suitability | Shape | Max RPM |
|---|---|---|---|---|---|
| Super Tsurugi Cut Off Wheel | 115 x 1.2 x 22.23 mm | 4.5" x 3/64" x 7/8" | Carbon Steel, Stainless Steel (INOX) | T41 (Flat) | 13,300 RPM |
Proper RPM matching is a critical safety signal in metalworking. Never mount a disc on a grinder that exceeds the disc's maximum rated speed. Check our angle grinder rpm chart and speed conversion table for complete safety parameters.
| Wheel Diameter | Safe Peripheral Speed | Maximum Safe RPM | Typical Angle Grinder Match |
|---|---|---|---|
| 4" (100mm) | 80 m/s | 15,200 RPM | 4" Compact Angle Grinder |
| 4.5" (115mm) | 80 m/s | 13,300 RPM | 4.5" or 5" Angle Grinder |
| 5" (125mm) | 80 m/s | 12,200 RPM | 5" Angle Grinder |
Low-priced discs often cut corners by reducing the layers of fiberglass mesh or using inferior resin, making them brittle at high rotational speeds. FUJI uses premium double-layer fiberglass and conducts burst tests that exceed 2x the JIS R 6241 rated speed, ensuring no bursting or fragmentation occurs.
FUJI works with industrial customers, distributors and OEM partners on volume requirements and selected customized abrasive specifications. Diameter, thickness, bore, formulation, packaging and application requirements can be discussed according to production conditions and order volume.
Burn marks are caused by excessive heat buildup, usually due to dull abrasives or discs that are too thick, especially for inox material. FUJI's 1.2mm ultra-thin cutting discs, combined with sharp Saint-Gobain alumina, creates a highly efficient cutting action that dissipates heat rapidly, preventing discoloration.
Many "famous" brand discs in Southeast Asia are actually counterfeit or produced by inconsistent OEM workshops. FUJI is a true source factory with a 70-year Japanese heritage. We manage our own formulations and strict quality control, guaranteeing 100% batch-to-batch stability.
Yes, a 4.5" (115mm) disc can safely be used on a 5" (125mm) angle grinder, provided the arbor size (22.23mm or 7/8") matches and the grinder's maximum RPM does not exceed the disc's rated 13,300 RPM limit.
Established in the 1953, FUJI Grinding Wheel boasts over 70 years of profound manufacturing experience. As a trusted "source factory" with a deep Japanese technical background, we focus exclusively on the R&D and production of top-tier resin abrasives. By cutting out middlemen, we deliver uncompromised Japanese standard quality at highly competitive wholesale prices, depending on volume and specific formulations.
Our commitment to excellence has earned us continuous praise and high ratings from industrial users worldwide. We never engage in the low-price, low-quality price wars that plague the current market. Instead, we invest in world-class raw materials and rigorous ISO-9001 certified processes. For a deeper dive into how we construct our products, feel free to read our complete guide to our resin bonded specifications. When you choose a FUJI steel cutting wheel, you are investing in absolute safety, consistency, and a legacy of Japanese craftsmanship.
Extensive metalworking inevitably requires both high-performance cutting and reliable grinding. If your operations require heavy material removal, blending, or surface preparation, we invite you to browse our premium grinding wheel for metal selection.
We specialize in large-scale B2B wholesale cooperation and custom OEM manufacturing. We understand that different materials behave differently. That is why we offer custom formula adjustments based on your specific application needs. Whether you are cutting specialized alloys or heavy structural steel, we can engineer the abrasive matrix to perfectly match your material. Once your custom formula is finalized, our robust supply chain guarantees a reliable 60-day delivery lead time.
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.
