RK 3140B HEAVY DUTY GRINDER RK 3140B Heavy Duty Grinder RK 3140B Heavy Duty Grinder Manufacturer Home / RK 3140B Heavy Duty Grinder RK Pneumatics is one of the eminent 3220 HEAVY DUTY GRINDER Manufacturers in Kolkata, West Bengal. Specification: Model Free Speed rpm Spindle Thread Size Wheel Capacity 0 x width mm Approx Weight with Guard kgs Length upto Guard End mm Air Inlet NPTF inch RK-3140B-6000 6000 M16 150×25 6.2 535 RC1/2”