SEW-EURODRIVE (Pty) Ltd. supplies complete drive systems for cranes, including project planning and design and aftersales service. No matter the operating conditions, these gear units are designed to match customer expectations. Typical applications include industrial, process, ship-to-shore, goliath shipyard and straddle carrier cranes.
Crane drives move heavy weights with low performance levels. In general, only the motion resistance has to be overcome. The industrial gear unit solutions from SEW-EURODRIVE (Pty) Ltd. provide the required torque strength.
Crane trolleys are used in a multitude of different applications and have to meet a wide range of requirements. While port and bridge cranes travel at low speed with a limited operating frequency, overhead traveling cranes and container stacking cranes travel at high speeds with a high frequency.
Another challenge is the alternating direction of rotation (reversing operation), that is the ability to transport loads in both directions. Here the mass moment of inertia is extremely large compared to the mass moment of inertia on the motor side. As a result, gear unit solutions for crane trolleys are primarily responsible for the acceleration and deceleration torque.
The robust X Series industrial gear units from SEW-EURODRIVE (Pty) Ltd. is an ideal drive solution for these complex operating conditions. A single-source solutions provider, SEW-EURODRIVE (Pty) Ltd. supplies industrial gear units, gear motors, motors, frequency inverters and controllers. This ranges from complete drive packages including couplings, brakes and steel structures to individual components.
Benefits are a parallel arrangement of the motor and rope drum thanks to a parallel-shaft helical gear unit with a larger centre distance; lower costs and weight, because the helical gear unit with a larger centre distance means it is no longer necessary to oversize the gear units for space reasons; and a lightweight, low-vibration design due to a gray cast iron housing optimised in terms of weight and rigidity.
A perfect fit is guaranteed thanks to finely stepped torque classes from 12.8 to 112 kN and a gear ratio range of 14 to 50. Availability is guaranteed due to the fact that the hoist gear unit is a standardised catalogue product. In addition, a range of options is available to ensure optimum adjustment for the installation required.
The X../HC Series of hoist gear units features a greater centre distance. Hoists often have parallel-shaft gear units in which the rope drum and motor are arranged on the same side of the gear unit. Compact universal gear units often have to be oversized in terms of torque, as the centre distance between the input and output shafts is insufficient.
It is based on the successful X Series, and is available in three or four stages. This means that the options and accessories available with the standard X Series can be combined with specific applications for the X../HC Series..
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