HEKO chain wheels type RUA are predominantly fitted as drive wheels. These wheels have a higher load capacity
due to the large number of fixings which secure the segments. Hubs are manufactured from carbon steel and segments are fabricated from CrMo alloy steel. 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. The chain wheels type RUA can be
used with vertically and horizontally mounted shackles and 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 guide is unnecessary for drive wheels in most cases.

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