HEKO chain wheels Type RUP are supplied primarily with 90° segment to ease replacement, but 180° segments
may be supplied on request. Instead of cast iron, HEKO manufactures the segments from CrMo alloy steel, which substantially increases the service life. Segments are normally supplied with a tensile strength of 700 to 800 N/mm², but this can be increased, on request, by heat treatment up to 1000-1400 N/mm². Such treatment ensures good durability under extreme operating conditions.
These chain wheels can be used with vertically and horizontally mounted shackles and many other types of
bucket attachments. The steel segments can also be retrofitted to cast iron or cast steel hubs. The cut-outs in the hub minimise the chance of material build-up within the
wheel, which could otherwise lead to chains coming off the wheels. All wheels are supplied with keyways or, on request, with taper lock bushes. In addition the hubs have holes for spacer bars to adjust for the correct chain centre distance. Segments can be supplied, on request, with chain
guide at one or both sides. However, experience has shown that such chain guides only required for return wheels.
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