Master Gear  Manufacturers, Traders, Suppliers

Master Gear Technical Specifications1. Definition of Master GearA Master Gear is a high-precision gear primarily used for gear inspection, calibration, and high-precision transmission systems. It serves as a reference gear to evaluate the accuracy of a test gear or as a primary driving gear in power transmission systems.2. Technical Parameters of Master GearThe key technical parameters of a Master Gear include:ParameterDescriptionAccuracy ClassDIN 4 / AGMA 13 or higherModule (m)Typically between 0.5 - 10 mmNumber of Teeth (Z)Customizable based on applicationPressure Angle (α)Commonly 20° or 25°Tooth ProfileInvoluteFace Width (b)Typically 5 - 50 mmHelix Angle (β)Spur (0°) or Helical (10°-30°)Material20CrMnTi, 18CrNiMo7-6, SKD11, etc.HardnessHRC 58-62 after carburizing and quenchingSurface Roughness (Ra)≤ 0.2 µmManufacturing ProcessGrinding, Shaving, Honing 3. Manufacturing Process of Master GearMaster Gears require extremely high manufacturing precision, typically involving:Hobbing – Initial gear cutting, achieving DIN 7-9 accuracy.Shaving – Enhances tooth profile precision, reaching DIN 6.Heat Treatment – Carburizing and quenching to improve hardness and wear resistance.Gear Grinding – Achieves tooth profile accuracy within 1-2 µm, reaching DIN 4 or higher.Superfinishing/Honing – Improves surface quality, reduces friction, and increases durability.4. Applications of Master Gear in Gear InspectionMaster Gears are essential for various gear testing methods, including:Double Flank Rolling TestMeasures cumulative pitch error and backlash variation.Evaluates the radial runout and transmission error by meshing with the test gear.Single Flank TestAssesses motion accuracy and smoothness of the test gear.Commonly used in high-precision gear applications like aerospace and instrumentation.Calibration of Gear Measuring MachinesServes as a reference standard for verifying the accuracy of gear measuring instruments.5. Industry Applications of Master GearMaster Gears are widely used in high-precision gear inspection and advanced mechanical systems, including:Automotive Industry – Gearbox and differential gear testing.Aerospace Industry – High-precision transmission components and turbine gears.Machine Tool Manufacturing – CNC machine gear calibration.Robotics & Automation – High-precision servo drive systems.Wind Power Industry – Large gearbox testing.6. Quality Inspection of Master GearTo ensure compliance with industry standards, Master Gears undergo rigorous quality testing, including:Tooth Profile Error (f_α) – Deviation of the tooth curve, typically ≤ 2 µm.Pitch Error (f_p) – Consistency of gear pitch, typically ≤ 3 µm.Helix Error (f_β) – Deviation of helical gears, typically ≤ 3 µm.Radial Runout (Fr) – Measures gear rotation accuracy, typically ≤ 5 µm.Testing Equipment Includes:Gear Measuring Center (GMM)Coordinate Measuring Machine (CMM)Double Flank Tester7. Selection Guide for Master GearSelecting the right Master Gear depends on:Compatibility with the Test Gear – Matching module, tooth count, pressure angle, and profile.Accuracy Requirements – DIN 4 / AGMA 13 or higher for high-precision testing.Material & Hardness – Choosing wear-resistant materials suitable for the application.Gear Type – Spur, helical, or internal gears based on test requirements.8. ConclusionMaster Gears play a vital role in precision manufacturing, gear inspection, and power transmission systems. Their high accuracy, low error, and superior durability make them indispensable in automotive, aerospace, machine tool, and robotics industries. With the growing demand for high-performance gears, Master Gears must meet increasingly stringent precision and quality standards.

DIN 3960，DIN 3961，DIN 3962，DIN 3963，DIN 3967。