... load-bearing capacity. ISO9001-2008 standard Gear reducer introduced: gear reducer is external involute helical gears reducer ... which is based on national professional standards ZBJ19004.Gear reducer are widely used in metallurgy, mining, lifting ... direction, and following is its character: 1.Gear using high-frequency surface hardening quenching treatment, ... /6.3 ZD10-80 series gear box, gear reducer