K20 Pneumatic Rolling Motors

KRAIS Tube Expanders

Key Features

K20 pneumatic rolling motor is designed for the fast and accurate torque controlled rolling of tubes from 1/4” – 1/2” OD (6.3mm – 12.7mm OD). This uniquely designed tool with automatic reverse, expands tubes to a preset torque, at which point it automatically trips over to its reverse rotation, backing itself out of the tube ready for the next expansion.

The process is fast and effortless making it the ideal tool for production rolling applications. Our K-20 Models are available in 500, 1800 & 2500 rpm’s (see chart for suggested Tube Diameters). All models are furnished with their own carrying case & instruction manual.

Motors

MOTOR FREE SPEED MINIMUM TORQUE MAXIMUM TORQUE WEIGHT LENGTH AIR CONSUMPTION TUBE CAPACITY OD CHUCKS CHUCKS OPT
RPM ft.lbs Nm ft.lbs Nm Lbs Kg inch mm cfm l/min inch mm inch mm inch mm
K20-550 550 0,166 0,226 6,25 8,47 2,64 1,2 8,62 219 17 480 1/2 12,7 1/4” 6,35 3/8 9,5
K20-1800 1800 0,166 0,226 2,25 3,05 2,42 1,1 8,07 205 17 480 3/8 9,5 1/4” 6,35 3/8 9,5
K20-2500 2500 0,166 0,226 0,66 0,9 2,29 1,1 8,07 205 1,7 480 1/4 6,3 1/4” 6,35 3/8 9,5