Specifications Single Vane Size Rotating angle adjustment range Rubber bumper 10 0 to 230° Yes 15 20 0 to 240° 30 40 0 to 230° Note 1) Use rotary actuator for 270°. Note 2) Connecting ports are side ported only. Note 3) The allowable kinetic energy is the same as the specifications of the rotary actuator. Double Vane Size Rotating angle adjustment range Rubber bumper 10 0 to 90° Yes 15 20 30 40 Note 1) Since the maximum angle of the rotating angle adjustment range will be limited by the rotation when using a rotary actuator for 90°, make sure to take this into consideration when ordering. Rotary actuator for 90° should be used to adjust the angle of 85° or less as a guide. Note 2) Connecting ports are side ported only. Note 3) The allowable kinetic energy is the same as the specifications of the rotary actuator. Recommended Tightening Torque for Holding Stopper Block Size Tightening torque (N・m) 10 1.0 to 1.2 15 20 2.5 to 2.9 30 3.4 to 3.9 40 Note) Stopper block is tightened temporarily at the time of shipment. Angle is not adjusted before shipment. Rotary actuator A A Angle adjuster unit Output shaft with single flat (A key is used for size 40.) A port B port Cap Rotating Angle Adjustment Method Remove the resin cap in the illustrations below, slide the stopper block on the long groove and lock it into the appropriate position to adjust the rotating angle and rotating position. Protruding four chamfers for wrench on the output shaft that rotates allows manual operation and convenient positioning. (Refer to the rotating angle setting examples shown in the next page for details.) Section A-A (Double vane) Section A-A (Single vane) Stopper block Long groove Stopper block Long groove Four chamfers for wrench Note) For size 40, each stopper block comes with 2 holding screws. Other Operating Method Although one stopper block is mounted on each long groove for standard specifications as shown in the illustrations below, 2 stopper blocks can be mounted on one long groove. Angle adjustment range when 2 stopper blocks are mounted on one long groove Size: 10, 40 ・・・・・・・・・・・・・・・・・・50° Size: 15, 20, 30 ・・・・・・・・・・・・60° As shown in , when mounting 2 stopper blocks on one long groove, by revolving each stopper block (A)(B), the rotation range of the output shaft with single flat (key) is adjustable, as described in , within either left 50° or 60° against port A and B. (Rotation range of single flat (key) when mounting 2 stopper blocks on the other side’s groove is the opposite side from and the setting range is within either right 50° or 60° against port A and B.) 60° 50° Single flat (key) A port B port A port B port Stopper lever Stopper block (A) Stopper block (B) * These figures show the CRB2 series. 50 Series CRB�ｮ2 Angle Adjustment Setting