Features: Electric putter, also known as push rod motor, electric cylinder and linear actuator. The electric putter is an electric drive that converts the motor's rotational motion into a straight reciprocating motion of the push rod. Can be used in a variety of simple or complex process as the implementation of mechanical use, in order to achieve long-range control, centralized control or automatic control. Main use: electric medical bed, electric sofa, electric stand lift rod, industrial electric lift system, camera frame, video machine, wedding system. How it works: After the motor is slowed by the gear, drive a pair of screw nuts. The motor rotation into a linear motion, the use of motor reversal to complete the putter action. Such as through a variety of lever, rocker or connecting rod and other institutions to complete the rotation, shake and other complex movements. You can increase the stroke by changing the lever arm length. Low noise design, noise level is 42dB. Inside set a stroke switch. Can be matched with wire or remote control. Specifications: Size: as the picture Weight: 1350 g Permanent magnet DC motor drive voltage: 12V DC Maximum Push/Pull Force: 750N Standard Stroke: S =500mm Minimum distance (the distance between the front and rear of the two holes) :L = S(stroke)+ 105mm putter between two holes = 2XS(travel)+ 105mm No load speed: 10mm/s Speed and thrust relationship: 5mm / s (kg) -50s (50kg) environment temperature: -26~50 Standard protection level: IP54 Noise Level: 42dB Package Included: 1 x Electric Linear Actuator Motor 2 x Bracket 2 x Bolt 2 x Cotter pin for the linear actuators .