High-Efficiency,Long-Lasting

FUJI Self-Sharpening Grinding Wheels
  • 4 inch Depressed Center Grinding Wheels Super F2
  • Grinding Work on one steel plate with FUJI Super F2 grinding discs
  • 100c6mm Depressed Center Grinding Wheels  (Super F-Ⅱ )
  • Label information of FUJI Abrasive Wheels
  • Master Carton Package of  Depressed Center Grinding Wheels  (Super F-Ⅱ )
  • Customer Reviews on Super F2 from Japan
  • Super F2 Grinding Wheel Structure
  • 4 inch Depressed Center Grinding Wheels Super F2
  • Grinding Work on one steel plate with FUJI Super F2 grinding discs
  • 100c6mm Depressed Center Grinding Wheels  (Super F-Ⅱ )
  • Label information of FUJI Abrasive Wheels
  • Master Carton Package of  Depressed Center Grinding Wheels  (Super F-Ⅱ )
  • Customer Reviews on Super F2 from Japan
  • Super F2 Grinding Wheel Structure

Most popular Depressed Center Grinding Wheel (4 inch Super F-Ⅱ)

No.Super F-Ⅱ

Japanese Quality. Affordable Performance.

FUJI Super F2 is a 4-inch (100mm) depressed center grinding wheel for everyday carbon steel, general steel and cast iron grinding.

  • Affordable & practical: Selected aluminum oxide abrasive for routine fabrication and maintenance.
  • Durable, reinforced construction: Selected phenolic resin and alkali-free fiberglass mesh, combined using FUJI’s Japanese warm-pressing process.
  • Japanese quality standards: Produced under FUJI’s Japanese quality and management standards.
  • Custom development: Formulation and dimensions can be adjusted to your material, equipment and production needs, subject to technical assessment.

Typical applications: Weld grinding, deburring, edge preparation and general metal grinding.

100mm Sizes & Ordering

Dimensions(Diameter × thickness × bore):
100 × 4 × 16 mm / 100 × 6 × 16 mm

For compatible 4-inch angle grinders. Other sizes are also available.

  • 4 inch Depressed Center Grinding Wheels Super F2
  • Grinding Work on one steel plate with FUJI Super F2 grinding discs
  • 100c6mm Depressed Center Grinding Wheels  (Super F-Ⅱ )
  • Label information of FUJI Abrasive Wheels
  • Master Carton Package of  Depressed Center Grinding Wheels  (Super F-Ⅱ )
  • Customer Reviews on Super F2 from Japan
  • Super F2 Grinding Wheel Structure
  • Description

  • Instruction for Use

  • Cautions

Overview: 4 Inch Grinding Wheel for Steel — FUJI Super F2

Japanese Quality. Affordable Performance.

This affordable 4-inch (100mm) grinding wheel from FUJI’s Super F2 series features a depressed center design for carbon steel, general steel and cast iron. It supports everyday weld grinding, deburring, edge preparation and stock removal in fabrication and maintenance work.

Selected aluminum oxide abrasive, phenolic resin and alkali-free fiberglass mesh are combined using FUJI’s Japanese warm-pressing process. Produced under FUJI’s Japanese quality and management standards, Super F2 combines practical value, durability and reinforced construction.

The compact 100mm format is a practical choice for local grinding and routine workshop tasks with compatible 4-inch angle grinders. Standard specifications are available, with other sizes and custom formulations offered for different production needs.

FUJI Super F2 grinding wheel used for metal grinding

Why Choose Super F2: Materials & Manufacturing

Selected Aluminum Oxide

An abrasive choice for routine steel and cast iron grinding, balancing practical stock removal, durability and affordable performance.

Selected Phenolic Resin

The phenolic resin bond holds the abrasive grains together as part of the wheel’s grinding structure.

Alkali-Free Fiberglass Mesh

Alkali-free fiberglass mesh reinforces the resin-bonded wheel body for everyday grinding tasks.

FUJI Warm-Pressing Process

FUJI’s Japanese warm-pressing process combines the abrasive, resin and reinforcement under its quality and management standards.

FUJI Super F2 grinding wheel structure with aluminum oxide abrasive, resin bond and fiberglass reinforcement

Explore our depressed center grinding wheel guide for additional metal fabrication and wheel-selection information.

4-Inch / 100mm Grinding Wheel Specifications

Choose the thickness and bore to match your equipment. Other sizes and custom specifications are also available.

FUJI Super F2 grinding wheel specification chart
Product series FUJI Super F2
Wheel type Reinforced resin-bonded depressed center grinding wheel
Dimensions
(Diameter × thickness × bore)
100 × 4 × 16 mm
100 × 6 × 16 mm
Abrasive Selected aluminum oxide
Bond & reinforcement Phenolic resin and alkali-free fiberglass mesh
Application materials Carbon steel, general steel and cast iron
Maximum operating speed 72 m/s standard; 80 m/s specification available on request. Follow the maximum operating speed marked on the supplied wheel.
Packing 100 pieces per carton

Applications: Everyday Steel & Cast Iron Grinding

  • Weld grinding: Level welds and remove excess weld material from steel fabrications.
  • Deburring: Remove burrs from fabricated steel and cast iron components.
  • Edge preparation: Dress edges and prepare suitable bevels before subsequent fabrication work.
  • Maintenance work: Carry out local surface grinding and component preparation in workshops and maintenance operations.

For alloy steels or other materials, send the material grade and grinding task so FUJI can recommend an appropriate specification.

Customer Feedback from MonotaRO Japan

Super F2 series rating in the captured review screenshot: 4.69/5 from 39 reviews.

Super F2 customer reviews on MonotaRO Japan

Selected customer reviews highlight practical steel grinding, weld preparation and affordable value for everyday workshop use. Long-term users also mention ease of use and wheel durability.

These reviews cover different Super F2 specifications, not exclusively the 100mm wheel on this page. This summary paraphrases selected Japanese reviews; individual experiences vary. The rating reflects the captured screenshot and may change.

Read Super F2 customer reviews on MonotaRO Japan (Japanese)

Safe use: Match the wheel dimensions and rated speed to your grinder. Follow the wheel and machine instructions, use the correct guard and protective equipment, and never exceed the wheel’s marked maximum operating speed.

Frequently Asked Questions

Will it fit every 4-inch angle grinder?

Diameter alone does not establish compatibility. Check the wheel thickness, bore, mounting arrangement, guard and maximum operating speed against the grinder and wheel instructions. Select the exact specification required by your equipment.

Can I order sizes other than 100mm?

Yes. Other sizes are available, including the 7-inch (180mm) Super F2 for heavier grinding tasks with compatible equipment. Send your required diameter, thickness, bore and application so FUJI can recommend a standard or custom specification.

Is Super F2 suitable for stainless steel?

This version focuses on general steel and cast iron. For stainless steel, confirm the material and contamination requirements and consider FUJI’s stainless steel grinding discs . Request the appropriate specification for your application.

Can I use this grinding wheel for cutting?

This page describes a grinding wheel. For cutting operations, select an appropriate cut-off wheel matched to your material and machine, and follow its specified operating instructions.

Can FUJI adjust the formulation or dimensions?

Yes. FUJI can assess custom formulations and dimensions for your production needs. Provide your workpiece material, equipment, current grinding wheel, monthly consumption and the problem you want to improve. Development is subject to technical assessment and sample evaluation.

What information is needed for a standard order?

Select the wheel dimensions, confirm the packing quantity and send the number of wheels or cartons required. Include your delivery destination and preferred delivery schedule when requesting a quotation.

Related FUJI Grinding Solutions

Choose the grinding wheel to suit the material, workload and equipment. The 100mm Super F2 remains a practical option for everyday workshop grinding; the following products address other operating needs.

7-Inch Super F2: Heavy Grinding

For heavy stock removal and larger work areas in fabrication, shipyards and industrial maintenance, explore the 7-inch (180mm) Super F2 grinding wheel .

7-Inch Super Z: Foundry Grinding

For demanding casting cleanup and foundry work, explore the 180mm Super Z zirconia grinding wheel for castings .

Use 180mm wheels only with compatible equipment designed for that size.

For applications requiring a semi-flexible wheel, explore FUJI Ace semi-flexible grinding wheels and confirm the appropriate specification for your material and required finish.

FUJI: Over 70 Years of Abrasive Expertise

Founded in 1953, FUJI Grinding Wheel specializes in grinding wheels, cutting discs and related industrial equipment. More than 70 years of abrasive experience support its work with metal fabrication, maintenance, shipbuilding and foundry applications.

FUJI combines Japanese quality and management standards with ISO 9001 quality management, focusing on consistent manufacturing quality, practical performance and product safety. Its approach includes attention to applicable Japanese abrasive standards and the requirements of each product specification.

From standard grinding wheels to custom development, FUJI helps customers select formulations and dimensions for their materials, equipment and production needs. Explore our FUJI company history and manufacturing capabilities and quality certificates for further information.

FUJI grinding wheels and abrasive products

Discuss Your Grinding Requirements with FUJI

Whether you need standard 100mm Super F2 grinding wheels, another size or a custom specification, send your requirements for product selection and quotation.

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.