Tyrolit
Tyrolit Gear Grinding Wheels | Precision Profile Wheels for Involute Gear Manufacturing
Tyrolit Gear Grinding Wheels are ultra-high-precision vitrified, resinoid, and CBN superabrasive wheels specifically engineered for the generation and profile grinding of spur, helical, bevel, and worm gears in automotive, aerospace, and industrial power transmission manufacturing. This is one of the most technically demanding abrasive applications; the wheel must hold an exact involute profile that is imparted to the gear tooth flanks under conditions of high speed, extreme accuracy, and substantial stock removal. Tyrolit’s gear grinding wheels are manufactured using advanced CNC profile dressing and ultra-fine abrasive grain technologies that enable consistent profile retention, minimal dressing loss, and low grinding temperatures. The range includes threaded wheels for continuous generation grinding (e.g., Reishauer process) and single- or dual-profile wheels for form grinding. Tyrolit ceramic grains, including the GENIS 2 system, provide the necessary self-sharpening action to maintain profile sharpness over long production runs. CBN profile wheels offer extreme longevity and dimensional stability for grinding case-hardened gears. Tyrolit also supplies the diamond dressing rolls that profile these wheels. Gear manufacturers select Tyrolit to achieve DIN 1–4 quality gear profiles with reduced cycle times and lower wheel cost per gear, ensuring their transmissions meet the noise, durability, and efficiency standards of modern electric and combustion vehicles.
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Proprietary Profiling and Grain Alignment
Tyrolit optimizes the microstructure and dressing parameters to ensure the wheel's abrasive grit directly reproduces the exact involute form required, reducing tooth-to-tooth variation and total composite error.
GENIS 2 Porous Ceramic for Burn-Free Grinding
Highly porous vitrified wheels allow maximal coolant penetration into the grinding arc, preventing the tooth flank burning that leads to gear failure through micropitting.
CBN Wheels for High-Volume Case-Hardened Gears
Electroplated and vitrified CBN gear grinding wheels provide a virtually unchanging form over tens of thousands of gears, eliminating the need for frequent CNC dressing cycles and dramatically increasing gear output per shift.
Compatibility with Reishauer, Gleason, and Kapp Machines
Tyrolit manufactures threaded and profile wheels to exact OEM spindle mount specifications, ensuring perfect fit, balance, and process repeatability on the world’s leading gear grinding platforms.
Matched Dressing Roll Technology
Tyrolit provides complete system solutions—the grinding wheel and the exact diamond dressing roll to profile it—guaranteeing profile accuracy and simplifying supply chain management.
Reduced Total Cost Per Gear
The combination of faster grind cycles, longer dressing intervals, and longer wheel life directly reduces the abrasive and labor cost included in every manufactured gear.
Why Tyrolit Is the Leading Innovation Partner for Gear Grinding Applications
The shift to electric vehicles (EVs) has placed unprecedented demands on gear manufacturing: EV gearboxes require higher speeds, lower noise, and higher efficiency. This translates into tighter gear accuracy requirements (DIN 4–6) and strain on grinding processes. Tyrolit’s R&D teams have worked closely with gear machine OEMs to develop wheel specifications that address the particular challenges of EV gearing—grinding deeply hardened, high-density steels without burning, and achieving superfinished tooth surfaces that reduce whine. The development of micro-fracturing ceramic grains in extremely porous bond structures has allowed a significant reduction in grinding energy, preventing the thermal damage that can compromise the surface integrity of high-strength gear steels. Tyrolit’s global network of gear grinding specialists provides on-site process optimization, often reducing cycle times by up to 15% while simultaneously extending wheel life.
Choosing Between Vitrified and CBN Wheels for Gear Profile Grinding
Vitrified ceramic wheels are the preferred choice for flexible, batch-production gear grinding because they are easily dressed to different profiles and provide a good balance of cost and performance. CBN wheels are selected for dedicated high-volume lines producing a single gear profile, where the wheel’s extreme durability and consistency eliminate dressing-related machine downtime and scrap. Tyrolit’s application engineers conduct a “grinding audit,” analyzing current cycle times, wheel consumption, dressing frequency, and scrap rates, and then present a business case showing the payback period for converting to a CBN system if warranted. Both wheel types are supported by Tyrolit’s in-house dressing roll design and manufacture, ensuring the wheel profile is maintained perfectly.