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Heavy duty twin castors LSD-GBS 82K-EMDSB-906018:

The Customer

A system supplier of individual drive solutions.


The Challenge

The client needs casters with a safe braking system when developing a new autonomous, intelligent, self-organizing DTS (driverless transport system). The payload of this transportation assistant should be 2200 lbs - that means that a load-bearing capacity of 1100 pounds per caster is required. The system should move along at a speed of 1 m/s and be able to, for example, lift containers up to 3 inches. A positioning accuracy of +/- 0.2 cm must be maintained for this. As the device is only 30 cm high, the mounting height of the casters is restricted.  

Our Solution

Due to the low mounting height and high load capacity requirements, it was clear to the Blickle experts that heavy duty twin casters were the only solution. For this demanding application, our engineers developed a customized caster with cast iron and forged steel casing parts. The elastic polyurethane tread Blickle Besthane® Soft also offers good floor preservation and maximum operational comfort, with very low rolling resistance.

As conventional braking mechanisms could not be integrated into the caster, the specialists worked on a new solution, consisting of an electromagnetically controlled drum brake - using the dead man principle. This means that the brake is locked without power in normal condition, and is electromagnetically opened before the journey. The dead man's brake first acts as a travel brake and secondly as a locking unit, and represents a major safety function for the device as a whole.

The Blickle caster solution was put through its paces on the client's testing premises; after a variety of braking, rolling and driving tests, and some minor constructive adjustments - the unit passed all tests.


Product advantages and technical information LSD-GBS 82K-EMDSB-906018:
• Compact bracket, made of robust cast iron and forged components
• Electromagnetically controlled drum brakes, based on the dead man principle
• Very high brake retaining forces combined with very low caster height
• Controls fall within the 24V low voltage range and only 3 volts in the retaining area
• Can also be used as driving brakes, with high braking performance