FIELD: processes for finishing and hardening parts. SUBSTANCE: method comprises steps of placing balls to retainer, imparting rotation to retainer and providing contact of balls with worked surface; feeding lubricating and cooling liquid under balls through nipples with calibrated openings; placing nipples to retainer and providing rotation of balls engaged with worked surface. EFFECT: enhanced quality of worked parts. 2 cl, 1 dwg, 1 tbl, 1 ex
