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The result became the brake adjuster which still is the single product with the highest turnover at Haldex. Investments in the US: The company made two acquisitions in the United States since the late 1990s, Midland-Grau in 1998 and Neway/Anchorlok in 2002. [3] Haldex up to 2011:
A hydraulic tappet, also known as a hydraulic valve lifter or hydraulic lash adjuster, is a device for maintaining zero valve clearance in an internal combustion engine. Conventional solid valve lifters require regular adjusting to maintain a small clearance between the valve and its rocker or cam follower. This space prevents the parts from ...
A trial in January 1952 saw a 52-wagon, 850 ton coal train run 127 miles (204 km) at an average of 38 miles per hour (61 km/h), compared to the usual maximum speed on the Midland main line of 25 miles per hour (40 km/h) for unfitted freight trains. [16] In 1952, 14% of open wagons, 55% of covered wagons and 80% of cattle trucks had vacuum brakes.
In mechanical engineering, backlash, sometimes called lash, play, or slop, is a clearance or lost motion in a mechanism caused by gaps between the parts. It can be defined as "the maximum distance or angle through which any part of a mechanical system may be moved in one direction without applying appreciable force or motion to the next part in mechanical sequence."
In railroading, slack action is the amount of free movement of one car before it transmits its motion to an adjoining coupled car. This free movement results from the fact that in railroad practice cars are loosely coupled, and the coupling is often combined with a shock-absorbing device, a "draft gear", which, under stress, substantially increases the free movement as the train is started or ...
The first railway workshops in Western Australia were located at Fremantle [1] and shifted to Midland in 1904. [2] The Midland Railway Workshops were involved with all WAGR rolling stock and engine construction and maintenance. Steam engines continued to operate on mainline service until 1971, and all major maintenance occurred at the workshops.