FUJI has manufactured abrasives in Japan since 1953. For industrial buyers, that history is a starting point: the useful questions are how a grinding disc performs on the intended material, how much wheel it consumes, and what documentation supports its safe use. This article examines the published Super F2 comparison and explains how to evaluate grinding wheel quality and cost per job.
Explore FUJI’s company background and the FUJI abrasives catalog for product specifications.
Abrasive selection, resin bonding, reinforcement and manufacturing consistency all influence wheel behavior. FUJI describes its hot pressing process for resin grinding wheels in a separate technical article. Manufacturing details should be assessed alongside the actual product marking, application instructions and relevant test records.
Price alone cannot establish whether a disc is suitable or safe. Procurement should check the manufacturer, traceability, wheel dimensions, intended material, maximum operating speed and applicable product documentation. Brand history does not replace these checks.
The following data reproduce the comparison previously published on this page for the 4-inch Super F2 and three anonymized alternatives. Removal rates are recalculated from the displayed mass and time values; small differences from the earlier rates result from rounding. These are reported comparison figures, not an independently verified laboratory certification.
| No. | Reported metric (carbon metal) | FUJI | Brand K | Brand M | Brand T |
|---|---|---|---|---|---|
| 1 | Size (mm) | 100×6×16 | 100×6×16 | 100×6×16 | 100×6×16 |
| 2 | Recorded grinding time (min) | 42 | 25 | 18 | 25 |
| 3 | Workpiece mass removed (g) | 515 | 297 | 222 | 303 |
| 4 | Wheel mass lost (g) | 69.5 | 68.9 | 66.5 | 65.4 |
| 5 | Removal rate recalculated (g/min) | 12.26 | 11.88 | 12.33 | 12.12 |
| 6 | Mass removal-to-wear ratio (g/g) | 7.41 | 4.31 | 3.34 | 4.63 |
Test limitations: The published comparison does not specify the grinder model, operating RPM under load, applied force, steel grade or hardness, repeat count, variability, or stopping criterion. Request those details before treating the results as a prediction for a production line. Different wheel densities also mean the mass ratio should not be presented as a volume-based grinding ratio.
Metal removal rate (g/min) = workpiece mass removed ÷ grinding time. It describes how quickly the tested setup removes material. A higher rate may shorten a task, provided surface quality and process requirements are still met.
Mass removal-to-wear ratio (g/g) = workpiece mass removed ÷ wheel mass lost. It describes abrasive consumption in this table. A larger value means more workpiece mass was removed for each gram of wheel consumed under the reported conditions.
Volume-based grinding ratio uses volumes rather than masses. Converting the table to that measure requires the relevant workpiece and wheel densities. The 7.41 figure here is explicitly a mass ratio.
The purchase price of one wheel is only one input. Compare discs on the same material and task, using compatible equipment and a consistent endpoint. Record workpiece mass removed, elapsed grinding time, wheel consumption, disc changes, finish quality and any rework.
Cost per completed job = abrasive cost allocated to the job + labor cost + changeover cost + rework cost.
A longer-lasting disc may reduce changeovers, while a faster disc may reduce grinding time. Neither benefit can be assumed from price or a single ratio. Measure both using a controlled shop trial; safety and compatibility are prerequisites for any economic comparison.
The FUJI video is presented as a 30,000 RPM speed-test demonstration for a 4-inch wheel. It is not permission to operate a grinding disc at that speed and does not establish the rating of every FUJI product. Use the maximum operating speed marked on the particular wheel and follow the wheel and machine instructions.
Any claim of compliance with JIS, EN or ANSI requirements needs the applicable product type, standard edition, test procedure and supporting documentation. This demonstration alone should not be described as proof of certification or universal superiority over those standards.
See the Super F2 depressed-center grinding wheel for product information. For material and wheel selection, use our angle grinder grinding wheel selection guide.
Use these product pages to compare specifications and request a suitable wheel for your material and machine. The Super F2 comparison above does not represent test results for these other products.
No. Wear ratio and removal speed measure different things. In the reported comparison, FUJI has the highest mass removal-to-wear ratio, while Brand M has a slightly higher calculated removal rate.
A test speed is not an operating rating. Follow the speed marking on the specific wheel and the machine instructions; never use the video as a substitute for those limits.
No. It is the recorded duration in the published comparison. A reproducible life comparison requires the same application and a defined stopping criterion.
Share the workpiece material, grinder specifications, wheel dimensions, operation and required finish. Agree on the comparison method before testing, then measure time, consumption and completed-job cost.
Contact FUJI with your material, machine speed, wheel size and production task. Request the relevant product instructions and supporting test information, and use a representative trial to decide whether Super F2 suits your process.
Tell us your workpiece material, grinder RPM, wheel size and production task. Contact our team for product selection, specifications and application enquiries.
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