The present disclosure is directed to a bearing for supporting a swash plate of a hydraulic static transmission. According to the present disclosure, there is disclosed a technology in which plates made of aluminum and Teflon materials are coupled to each other or separate fixation portions that do not come into contact with a support are formed and fixed to the support. The control for neutral return is facilitated, and the manufacturability and versatility are improved.

The present disclosure is directed to a bearing for supporting a swash plate of a hydraulic static transmission. According to the present disclosure, there is disclosed a technology in which plates made of aluminum and Teflon materials are coupled to each other or separate fixation portions that do not come into contact with a support are formed and fixed to the support. The control for neutral return is facilitated, and the manufacturability and versatility are improved.

A system for mechanically coupled multi-variator actuation is disclosed. One system includes: a first hydraulic variator comprising: a first hydraulic pump; and a first hydraulic motor linked to the first hydraulic pump. The system may further include a second hydraulic variator comprising: a second hydraulic pump; and a second hydraulic motor linked to the second hydraulic pump. The system may further include a first actuator linked to the first hydraulic pump and configured to control a displacement of the first hydraulic pump; a second actuator linked to the second hydraulic pump and configured to control a displacement of the second hydraulic pump; and a mechanical link connecting the first actuator and the second actuator, the mechanical link configured to facilitate a coordinated operation of the first actuator and the second actuator.

A system for mechanically coupled multi-variator actuation is disclosed. One system includes: a first hydraulic variator comprising: a first hydraulic pump; and a first hydraulic motor linked to the first hydraulic pump. The system may further include a second hydraulic variator comprising: a second hydraulic pump; and a second hydraulic motor linked to the second hydraulic pump. The system may further include a first actuator linked to the first hydraulic pump and configured to control a displacement of the first hydraulic pump; a second actuator linked to the second hydraulic pump and configured to control a displacement of the second hydraulic pump; and a mechanical link connecting the first actuator and the second actuator, the mechanical link configured to facilitate a coordinated operation of the first actuator and the second actuator.

A system for hydraulically coupled multi-variator actuation is disclosed. One system includes: a first hydraulic variator comprising: a first hydraulic pump; and a first hydraulic motor linked to the first hydraulic pump. The system may further include a second hydraulic variator comprising: a second hydraulic pump; and a second hydraulic motor linked to the second hydraulic pump. The system may further include a first actuator linked to the first hydraulic pump and configured to control a displacement of the first hydraulic pump; a second actuator linked to the second hydraulic pump and configured to control a displacement of the second hydraulic pump; a hydraulic link connecting the first actuator and the second actuator, the hydraulic link configured to facilitate a coordinated operation of the first actuator and the second actuator; a valve disposed in fluid communication with the hydraulic link connecting the first actuator and the second actuator; and a controller connected to the valve and configured to control an operation of the valve to regulate hydraulic flow in the hydraulic link.