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XM series Spring Return Scotch Yoke can realize automatic control of industrial process with various accessories.
The principle is that, compressed air enters the chamber to push the piston to do linear motion, and by transmission structures of the yoke pin and yoke groove, the piston's linear motion will be converted into the yoke's rotary motion,and drive the output shaft to rotate, thus achieving the control of the valve.
There are two types of XM Scotch Yoke Pneumatic Actuators,including Symmetrical and Canted, which correspond to twodifferent output torque characteristics.The Canted ScotchYoke Actuator,with high starting torque and low operatingtorque,is suitable for the control of butterfly valve.TheSymmetrical Scotch Yoke Actuator,with more balancedtorque curve, is mainly suitable for the control of ball valveand plug valve.
The dual-material (rubber and PFA) encapsulated O-rings can beapplied to a wide range oftemperature and conditions.
Adouble O-ring and bearing design ensures the stability anddependability ofthe modular cylinder.
The Output Torque of XM Spring Returntype can be more than 140,0OONm, and Double Acting type more than250,00ONm.
Operating pressures:0.3-0.6Mpa.
The central body module and cylinder module are all made of ductileiron or carbon steel to ensure enough strength. The overall structure iscompact,with beautiful and coordinated design.The yoke and pistonensure the best torque output.
Low friction and long-life compound rawmaterial can avoid the direct connectionof metals, which makes the maintenanceand replacement easy and convenient.
The output shaft conforms to the lateststandards of ISO5211 and NAMUR. ltsdimensions can be customized,and thestainless steel material is optionally available.
The NAMUR standard position indicator isconvenient for the assembly of accessoriessuch as Limit Switch Box, Positioner, etc.
Two independent angle adjustable bolts canadjust the valve travel from -6°to 96°,assisting to prolong the valve seat integrity.
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