FUJI Resinox ZA is a 7-inch resin-bonded zirconia grinding wheel for cast iron fettling and casting surface cleanup. It is an option for foundries seeking more productive grinding of grey cast iron, including automotive castings and other iron components. Select the grade for the casting, stock-removal task and available grinder.
Where to Use It in a Foundry
Casting flash and parting lines: remove excess material from accessible areas while maintaining the drawing dimensions.
Grey cast iron deburring: clean rough edges and local casting irregularities with an approved grinding operation.
Casting surface treatment: remove local excess metal before subsequent machining or finishing, where the process specification permits.
Automotive castings: evaluate on representative grey iron parts rather than assuming identical results across all grades and geometries.
This is a grinding wheel, not a thin cut-off disc. Suitability for ductile iron, cast steel, stainless steel or other alloys should be confirmed separately. Small holes and internal cavities may require a different tool and abrasive.
Zirconia Abrasive and Production Efficiency
The zirconia abrasive specification is selected for efficient cast iron stock removal. Abrasive choice, bond grade, machine power and contact conditions work together; the abrasive name alone does not establish a fixed wheel-life advantage.
Compare material removed per minute, wheel consumption, changeovers and the accepted surface result against the current wheel. The objective is a lower cost per completed casting. Productivity gains depend on the actual casting and operating conditions; no universal two- or three-times life claim is made here.
Pairing with the FUJI HGC-3902 High-Frequency Grinder
The FUJI HGC-3902 7-inch 300Hz high-frequency angle grinder is the recommended machine to discuss for this casting-grinding application. A correctly matched high-frequency tool and abrasive can support productive load grinding and consistent material removal.
Compatibility must be confirmed for the supplied versions. Check wheel diameter, thickness, actual bore, flange, guard and the grinder’s maximum spindle speed against the wheel label. Japan domestic wheels are supplied at 72m/s maximum peripheral speed; European export wheels are supplied at 80m/s. Select the appropriate market version and do not substitute a 72m/s wheel for an 80m/s requirement. Request confirmation of the wheel’s marked maximum RPM and the specific HGC-3902 configuration before use.
The HGC-3902 requires its specified high-frequency supply. Confirm voltage, frequency, connections and machine instructions; a 300Hz tool is not interchangeable with a 250Hz or 400Hz system. For the application context, see automotive casting fettling with FUJI 300Hz equipment.
Japan Domestic and European Export Specifications
Japan domestic supply: 72m/s. European export supply: 80m/s. These are maximum peripheral-speed ratings, not spindle RPM. Confirm the market version on the order and check the delivered wheel label. The retained catalogue images below show the Japanese domestic 72m/s specifications; they do not represent the export speed rating.
The original Japanese domestic specification images list the following variants. ZA is the zirconia selection featured on this page. PA and HZ remain listed as related catalogue grades; they should not be treated as identical zirconia formulations or automatically substituted.
Catalogue grade
Dimensions (mm)
Pack quantity
Marked peripheral speed
ZA24P BF
180 × 6 × 22
50 (10 × 5)
72m/s
ZA24M BF
180 × 6 × 22
50 (10 × 5)
72m/s
PA24M BF — related grade
180 × 6 × 22
60 (20 × 3)
72m/s
HZ24L BF — related grade
180 × 6 × 22
50 (25 × 2)
72m/s
The Japanese catalogue also displays approximately 4,300m/min for its 72m/s version. The European export rating of 80m/s corresponds to 4,800m/min. These values describe peripheral speed, not RPM. Use the maximum RPM printed on the delivered wheel. Confirm the exact bore; 22mm and 22.23mm must not be presented as automatically interchangeable.
Type: Resinox ZA (Carton & Specs)
Type: Resinox PA & HZ24L (Carton & Specs)
Select the Grade Through a Casting Trial
Send FUJI the iron grade, part photograph, area to be ground, stock-removal requirement, current wheel and grinder details. The ZA24P BF and ZA24M BF references identify different grades; choose between them using an application recommendation and a representative trial.
Use the same casting material and acceptance criteria for each comparison.
Record grinding time and workpiece material removed.
Measure wheel consumption and record disc changes.
Check dimensions, surface quality and any rework.
Compare abrasive and labour cost per accepted casting.
Inspection and Mounting
Before mounting, inspect the wheel’s appearance, label, visible damage and condition. Check the approved machine, flanges and guard, follow the manufacturer’s mounting instructions and use the required protective equipment and dust controls. Do not use damaged wheels or force a mismatched bore. Store resin-bonded wheels dry and protected.
Frequently Asked Questions
Is this wheel intended for grey cast iron?
Yes. The zirconia ZA selection is offered for grey cast iron grinding, casting fettling and surface cleanup. Confirm the grade for the particular casting and task.
Can it be fitted to the HGC-3902?
Discuss it as a matched 180mm foundry-grinding combination. Fitment requires confirmation of wheel dimensions, mounting and marked maximum RPM against the exact machine version; diameter alone is insufficient.
Are all ZA, PA and HZ wheels the same abrasive?
No. They are distinct catalogue grades. This page focuses on zirconia ZA for cast iron; request the specification before selecting a related grade.
How much faster will it grind?
There is no fixed gain for every casting. Compare removal rate, wheel consumption and finished quality in a controlled application trial.
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
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.
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.
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.
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.
Related Product
FUJI Grinding Wheels | Grinding Discs: Consistent Quality, Japanese Engineered for Grinding Excellence