Product Name: K77 Helical-Bevel Gear Gearbox Model NO.: K77 Type: Planetary Gear Reducer Step: Double or Three Steps Gear Shape: Helical - Bevel Gear Layout: Coaxial Installation: Omnibearing Installation Hardness: Hardened Tooth Surface Application: Machinery, Marine, Agricultural Machinery Shape of Gear: Helical - Bevel Gear Series: Double or Three Steps Trademark: customer-specified or plw Transport Package: Carton Packaging Specification: k77/57Kg/ helical - bevel gear units Origin: Hangzhou HS Code: 8483409000 Product Description K Helical - Bevel 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.