ZF Extends Range Of Marine Transmissions

With the introduction of the BW 195A, the German firm ZF is able to extend its existing range of "downangle" marine transmissions with inclined output shafts.

Although it has, until now, always been standard practice to offer transmissions with inclined output shafts for the lower end of the performance range, it has by no means been common in the performance range of the BW 195A. BW 195A marine transmissions are capable of transmitting engine powers of between 550 and 850 kw, depending on their type of application and shaft speed. This places them firmly in what is at present the most popular performance range for yachts and sportfishermen. These transmissions have a shaft inclination—or down-angle—of 10 degrees.

The advantage of inclined outputs is that the engineroom can be designed in a much more favorable way. In most cases, the engine can be mounted horizontally, considerably reducing the amount of headroom required. This feature is particularly advantageous in vessels with planing hulls.

The BW 195A range can be supplied with the following ratios, each of which is used for ahead and/or astern travel: 1.260:1, 1.488:1, 1.769:1, 1.972:1 and 2.484:1. Input speeds can range from a maximum of 2,500 rpm to a minimum of 450 rpm.

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Other stories from April 1991 issue


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