R type helical gearbox is developed and produced according to our countryâ??s standards as well as bring into overseas' advanced design. Gears and gear shafts made of high-quality low-carbon alloy steel 20CrMnTi,, output shaft made of high-quality low-carbon alloy steel 40Cr, the gearbox housing made of high-strength casting iron HT250, may also adopt material as requested. Integral casting housing with good rigidity to enhance the shaft strength and serves life of bearing.Structures: three-stage or two-stage foot-mounted helical gear reducer;Modularization design: parts of gearbox owns high exchangeability, coupling between gearbox and motor is standardized (usually IEC standard);Transmission ratio: fine division, wide scope, and may combine different series to get larger ratio;