High-Efficiency,Long-Lasting

FUJI Self-Sharpening Grinding Wheels
  • FUJI 115mm *6mm grinding wheel  4.5inch
  • Grinding Work on one steel plate with FUJI Super F2 grinding discs
  • Professional worker using FUJI 115mm grinding wheel on metal surface in metal fabrication factory
  • Package of  Depressed Center Grinding Wheels  (Super F-Ⅱ )
  • Customer Reviews on Super F2 from Japan
  • Label of FUJI Grinding Wheels
  • FUJI 115mm *6mm grinding wheel  4.5inch
  • Grinding Work on one steel plate with FUJI Super F2 grinding discs
  • Professional worker using FUJI 115mm grinding wheel on metal surface in metal fabrication factory
  • Package of  Depressed Center Grinding Wheels  (Super F-Ⅱ )
  • Customer Reviews on Super F2 from Japan
  • Label of FUJI Grinding Wheels

Best 4-1/2" Grinder Wheel for Metal Fabrication

No.115*6mm / 4.5 inch Super F-Ⅱ Grinding Discs

Japanese Quality. Longer-Lasting Steel Grinding.

This 115mm (4.5 inch) grinding wheel from FUJI’s Super F2 series was developed for Oversea customers using compatible 115mm angle grinders. An affordable choice for general steel fabrication and maintenance.

  • 30%+ longer wheel life: Compared with the same-specification cold-pressed wheels.
  • Japanese warm-press process: Promotes resin-to-abrasive bonding and an open structure for heat dissipation and durable grinding.
  • Comfortable grinding: Controlled resilience helps reduce vibration and noise for a smoother grinding feel.
  • Consistent quality: Controlled materials and manufacturing processes support wheel-to-wheel consistency.

Applications & Specifications

Materials: Carbon steel, mild steel and general structural steels.
Tasks: Weld grinding, deburring, edge preparation and maintenance work.

Size: 115mm/4-1/2 inch x 6mm (thickness)
Maximum operating speed: 80 m/s

  • FUJI 115mm *6mm grinding wheel  4.5inch
  • Grinding Work on one steel plate with FUJI Super F2 grinding discs
  • Professional worker using FUJI 115mm grinding wheel on metal surface in metal fabrication factory
  • Package of  Depressed Center Grinding Wheels  (Super F-Ⅱ )
  • Customer Reviews on Super F2 from Japan
  • Label of FUJI Grinding Wheels
  • Description

  • Instruction for Use

  • Cautions

115mm Grinding Wheel for Steel Fabrication & Maintenance

This 115mm (4½-inch) grinding wheel from FUJI's Super F2 series is developed for customers using compatible 115mm angle grinders, including European and North American workshops. It combines aluminum oxide abrasive, a reinforced resin bond and Japanese warm-press manufacturing technology for affordable, durable grinding of carbon steel, mild steel and general structural steel.

Its compact diameter makes it practical for weld cleanup, deburring, edge preparation and maintenance around brackets, frames and other areas with restricted access. Like the 100mm option, it is easy to maneuver with a suitable grinder, provided there is sufficient clearance for the wheel and protective guard.

The 115mm Type 27 depressed center grinding wheel is available in 6mm thicknesses, with a maximum operating peripheral speed of 80m/s. FUJI can also assess custom grit, hardness and formulation requirements for specific production tasks.

FUJI 115mm grinding wheel in use for steel fabrication

Japanese Warm-Press Technology & Core Advantages

FUJI combines selected aluminum oxide abrasive, phenolic resin and alkali-free fiberglass reinforcement using its Japanese warm-press manufacturing process. Controlled manufacturing supports resin-to-abrasive bonding and a structure designed to balance abrasive retention, porosity and grinding resilience.

  • Longer service life: FUJI reports more than 30% longer wheel life in internal tests against the same-specification cold-pressed wheels included in those tests. Longer usable life can reduce wheel changes and abrasive consumption.
  • Practical steel grinding: Aluminum oxide abrasive provides a combination of cutting action and durability for routine weld grinding, deburring and fabrication.
  • Heat management: The wheel structure is designed to support heat dissipation during grinding.
  • Comfortable handling: Controlled resilience helps reduce vibration and noise. Actual handling also depends on the grinder, mounting and working technique.
  • Consistent quality: FUJI manufactures these wheels in its own factory under Japanese quality management standards, with controlled materials and manufacturing processes.

The service-life comparison describes FUJI's internal test results, not a guaranteed improvement over every competing wheel. Performance varies with the steel, equipment and grinding conditions.

115mm Grinding Wheel Specifications

Series & wheel type FUJI Super F2 · Type 27 depressed center grinding wheel
Dimensions 115mm diameter × 6mm or 7mm thickness × 22.23mm bore
Abrasive & grades Aluminum oxide · 24S / 36P
Maximum peripheral speed 80m/s; observe the maximum RPM marked on the wheel
Materials & Custom options Carbon steel, mild steel and general structural steel. Custom grit, hardness and formulation subject to technical assessment.

Applications in Steel Fabrication, Welding & Repair

Structural Steel Fabrication

Use this 115mm grinding disc for localized grinding on steel brackets, frames, joints and accessible beam edges. Its compact format helps operators work around fabricated assemblies where a larger grinder would be less convenient.

Weld Grinding & Edge Preparation

Suitable for leveling excess weld metal, removing burrs and preparing accessible steel edges. This reinforced grinding wheel is intended for stock removal; use a suitable finishing abrasive where a finer surface finish is required.

Industrial Maintenance & Repair

A practical option for workshops and maintenance teams carrying out localized steel repairs, weld cleanup and component preparation with existing compatible 115mm angle grinders.

Shipyard Fabrication & Localized Grinding

The compact wheel can support weld cleanup and repair work on accessible steel components. For sustained stock removal across larger areas, consider an appropriately equipped 180mm grinding setup.

Steel grinding application in shipbuilding and repair

Super F2 Series Feedback from Japanese Customers

Customer feedback on MonotaRO provides additional information about users' experience with the FUJI Super F2 series. The screenshot below covers products within the series and should not be interpreted as a rating specifically for this 115mm version.

MonotaRO customer review screenshot for the FUJI Super F2 series
Series-level customer feedback. Review counts and ratings may change. Read the source reviews on MonotaRO.

Frequently Asked Questions

Will this wheel fit our existing 115mm angle grinders?

It is intended for compatible 115mm grinders. Confirm the bore, approved wheel thickness, mounting flanges, guard and maximum operating RPM before ordering. Diameter alone does not establish compatibility.

Why is the 115mm (4.5") size so popular?

This size balances maneuverability and material removal capacity. It matches the most common industrial angle grinders, making it suitable for both detailed contour work and heavy surface grinding.

What does the 30% longer-life comparison mean?

It refers to FUJI's internal tests against the same-specification cold-pressed wheels included in the comparison. It is not a guaranteed improvement over every competing product. Evaluate wheel consumption and grinding time together under your own operating conditions.

Can this steel grinding wheel be used on aluminum or contamination-sensitive stainless steel?

Do not assume the same formulation is suitable for every metal. For aluminum, choose an aluminum-specific grinding wheel. For stainless steel work with contamination limits, request a formulation with the required supporting specifications.

Can FUJI develop a wheel for our production requirements?

Yes. FUJI can assess custom grit, hardness and formulation requirements. Send the material grade, equipment information, current wheel specification, monthly usage and the problem you want to address.

Related FUJI Grinding Solutions

About FUJI Grinding Wheel

With more than 70 years of abrasive experience, FUJI develops grinding wheels, cutting discs and industrial grinding solutions. Its focus combines Japanese quality management, practical application knowledge and controlled manufacturing to support consistent performance for industrial customers.

Explore FUJI's company history and quality standards and certificates.

Ready to Transform Your Production?

Request a Quote/Sample for 115mm Grinding Wheels

Availability: Made to order; not currently in stock. Contact FUJI to confirm production lead time.

Send your required dimensions, grade and quantity, and confirm the packaging you need. For application-specific development, include your workpiece material, grinder details and the performance you want to improve.

Contact FUJI for a Quote

Abrasive Wheel Selection & Technical Parameters Guide

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.

Understanding Fuji Markings (e.g., WA 36 P BF)

  • Abrasive Type (WA/A/AZ): Determines the suitability for material hardness (e.g., WA for hardened steel, AZ for heavy-duty alloys).
  • Grit Size (16 - 120): Indicates the coarseness. Lower numbers for rapid removal; higher numbers for precision finishing.
  • Hardness Grade (L - S): Defines the bond strength. Correct selection prevents premature wheel wear or surface glazing.
  • Bonding Agent (BF): High-grade Resinoid bond reinforced for high-speed safety and impact resistance.

💡 Expert Selection Tip

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.

Fuji Abrasive Technical Selection Chart

Fuji Abrasives Wheel Description of Marking

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 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 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.

⚠️ 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.