新孔底盤，靜止時座板後仰2度。最大傾仰角度為25度。其傾斜比例1:2 (座板1 : 搖板2)，手搖式側面調整彈簧，可隨個人的體重和舒適感做適當之調整。主體”鋁合金”，雙桿式的氣壓升降和傾仰角度鎖定開關，安全回彈，氣壓桿和剎車桿各別操作。傾仰為5段鎖定(含靜止時)。

Synchronized mechanism. Seat tilt at 2° rearward when mechanism is in horizontal position. The maximum tilt angle is 25°. Seat and backrest tilt at a 1:2 ratio. Lateral tension adjustment operated by handle. The mechanism is aluminum. Height adjustment and locking functions are operated by 2 levers. 5 locking positions, including the natural tilt angle. Return-preventing system for backrest.