K70 Right Angle Rolling Motor

KRAIS Tube Expanders

Key Features

Our Latest Model Torque Controlled Rolling Motors have been designed specifically for the Boiler Tube Industry. Our Models K72-RT-90 AND K73-RT-190 are a Right Angle Tools Equipped with a Roll Throttle as standard. A Lever throttle is optional. Our Tools have a unique Head design

which features a fully enclosed bearing design for long and trouble free life. With Industry input, our tools have been specifically engineered to precisely and consistently Expand Tubes in Steam / Mud Drums, Fire Tube and related Boilers and Equipment.

K70 with right angle gear drive

KRAIS Tube Expanders

KRAIS Tube Expanders
KRAIS Tube Expanders

K70 with parallel gear drive

KRAIS Tube Expanders

K70 with single universal joint

KRAIS Tube Expanders

Motors

K72-RT-90 K72-LT-90 K73-RT-190 K73-LT-190 K73-RT-280 K73-LT-280 K73-RT-375 K73-LT-375 K72-LT-90-ST K73-LT-190-ST
FREE SPEED RPM 90 90 190 190 280 280 375 375 90 190
TORQUE CONTROLED YES YES YES YES YES YES YES YES STALL TYPE STALL TYPE
MAXIMUM TORQUE NM 410 410 200 200 140 140 110 110 440 210
FT.LBS 305 305 140 140 104 104 82 82 325 155
MINIMUM TORQUE NM 200 200 95 95 60 60 40 40 STALL TYPE STALL TYPE
FT.LBS 150 150 70 70 44 44 30 30 STALL TYPE STALL TYPE
WEIGHT KG 67 67 58 58 58 58 58 58 6 54
LBS 1 475 1 475 13 13 13 13 13 13 132 118
OVERALL LENGTH MM 550 550 530 530 530 530 530 530 485 465
INCH 217 217 201 201 201 201 201 201 19 185
HIGHT WITHOUT SQUARE DRIVE MM 70 70 65 65 65 65 65 65 70 65
INCH 275 275 26 26 26 26 26 26 275 26
SIDE TO CENTER MM 37 37 28 28 28 28 28 28 37 28
INCH 15 15 11 11 11 11 11 11 15 11
SQUARE DRIVE MM 3/4” 3/4” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 3/4” 5/8”
INCH 19 19 158 158 158 158 158 158 19 158
THROTLE TYPE TYPE ROLL LEVER ROLL LEVER ROLL LEVER ROLL LEVER LEVER LEVER
TUBE CAPACITY MM 1 016 1 016 635 635 571 571 508 508 1 016 635
INCH 4” 4” 2,5” 2,5” 2,25” 2,25” 2” 2” 4” 2,5”
CHUCK SIZE MM 25,4 & 19 25,4 & 19 19 19 19 19 19 19 25,4 & 19 19
INCH 1”& 3/4” 1”& 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 1”& 3/4” 1”& 3/4”
CHUCK SIZE OPTIONAL MM 12,7 QCC 12,7 QCC 12,7 QCC 12,7 QCC 12,7 QCC 12,7 QCC 12,7 QCC
INCH 1/2” QCC 1/2” QCC 1/2” QCC 1/2” QCC 1/2” QCC 1/2” QCC 1/2” QCC