RELEX AG CH-8645 Gear Reducer

The RELEX AG CH-8645 Gear Reducer is a Swiss-made gear reduction unit from Relex AG, produced in Jona (CH-8645) for servo-driven automation and motion-control systems. The CH-8645 JONA family encompasses inline and head configurations used with servo motors, including inline PLE and PLS series variants; one example is the PLE 120-25/M2/0P2/LS, which lists a 1 in output shaft and a compact form factor with an approximate 5 x 5 x 9 in external envelope and a weight around 17 lb. Another common variant is the PLS 90-16/M2/OP2/OP7/LS (601-0902-S06) marketed as a CH-8645 Jona Gear Reducer Head. Right-angle versions exist in the WPLE family (for example, WPLE 60) and are described as manufactured in Jona, CH-8645, with gear ratios such as 1:5. Some used listings reference inline CH-8645 reducers with ratios around 17:1 and horsepower in the six-to-seven horsepower range (e.g., 6.5 HP), illustrating the torque and speed options in this CH-8645 line. The unit commonly uses a 1 in output shaft and, in verified surplus listings, shows a weight near 17 lb with overall dimensions around 5 x 5 x 9 in.