Product Name: S37 Helical-Worm Gear Gearbox Model NO.: S37 Type: Planetary Gear Reducer Step: Double or Three Steps Gear Shape: Helical - Worm Gear Layout: Coaxial Installation: Omnibearing Installation Hardness: Hardened Tooth Surface Application: Machinery, Marine, Agricultural Machinery Shape of Gear: Helical - Worm Gear Series: Double or Three Steps Trademark: customer-specified or plw Transport Package: Carton Packaging Specification: S37/7Kg/ helical - worm gear units Origin: Hangzhou HS Code: 8483409000 Product Description S Helical - Worm gear unitsHousing materialHT250 High-strength cast ironHousing hardnessHBS90-240Gear material:20CrMnMoSurface hardnesss of gearHRC58°-62°Gear core hardnessHRC33°-40°Input/Output shaft material40Cr or 42CrMoInput/Output shaft hardnessHBS250°-290°Shaft at oil seal postion hardnessHRC48°-55°Machining precision of gears materialAccurate grinding 4-6 gradeHeat treatmentTempering, cementing, quenching etcEfficiencyUp to 90%Noise(Max)≤68dBUnit modelFoot mounted, flange mountedInput methodFlange input, inline input, shaft inputVibration≤20umBacklash≤20ArcminBearing brandsNSK, SKF etcOil seal brandsNAK, SKF etcLubricantVG220MotorY series motorMotor shaft40Cr or 42CrMo, Tempering, cementing, quenching etc.