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The HB-Trac haulage system is highly reliable because the HB-Trac chain operates with a constant pitch for
the winch sprocket of the shearer. The sloping angle of the line-pans do not effect the pitch, like other
systems. The horizontal articulation is therefore higher and the snake of the conveyor is shorter, meaning a
higher average mining speed.
The HB-Trac chain 34/45 has a breaking load of 1500 kN. The vertical link is drop forged with a 45mm width
contact area. This design enables shears of up to 2x50t haulage pull to be run securely on the HB-Trac
system. A big advantage is the absorbing elasticity of the HB-Trac chain, which protects shearer arms and
winches from shock loads.
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