... kinds of machine 1.with stress 2.without stress shot blasting machine with press Function: First add pre ... spring goes into the peening machine, and be shot by steel balls with velocity of 85m/s, then ... spring .the equipment is consist of loading/unloading system, shot peening machine, dust control system, hydraulic unit, pneumatic ... 250KWOur product cycle is approximate 100 days. shot peening machine