Tsubaki BS RF chain is suitable for use in basic pallet conveying applications in automated warehousing & logistics centres. The new chain is available in both standard carbon steel and Lambda lube free variant. The Lambda version helps to address the problem of external contamination entering the chain components via lubricant on the chain surface and creating the mechanical wear that results in chain elongation and high replacement costs. Lambda is ‘dry to the touch’ and so does not collect contaminants that work their way into the chain and wear it out.
As with every Tsubaki chain this series is made of a special steel alloy, the specification of which has been developed by the Tsubaki engineering department for selected steel mills to work with. Each of the major components is then manufactured with specific characteristics in order to ensure best operational performance. From an operational point of view, pitch and hole size is carefully controlled to enable a precise fit with drive sprockets. This provides proper articulation, extending the life of the chain and the sprockets.
The link plate is the component that bears the tension placed on the chain and again, is made from special grades of steel alloy to provide tough, long-lasting performance in high load conditions and resistance to damage caused by occasional shock loading.
In operation, the pins are subject to shearing & bending forces transmitted by the link plate and so are a load bearing medium. To provide the highest levels of performance in the most rugged conditions, the bearing pins in the BS RF chain are produced from specifically formulated metals and are precision manufactured components to ensure a consistent high tolerance fit with the link plates and a smooth bearing surface for operational efficiency.
The super- smooth chain bushings used on the BS RF chain are also produced from special steel alloy materials . The bush is subject to complex forces, especially the repetition of shock loads when the chain engages with the sprocket. Therefore the bush needs extremely high shock load resistance. In addition, the bush forms a load bearing component together with the bearing pin and as such requires great wear resistance.
In common with the bearing pins, the dimensions of the bushings are carefully controlled to provide a uniform bearing surface and a precise fit between the side plates. The rollers on the BS RF chain are also designed to withstand the impact load and are resistant to wear, but still maintain strength and resistance to shock, fatigue and compression.
For applications where lubricant cannot be tolerated, or where chain elongation is a serious problem, Tsubaki offers the option of a Lambda non-lube version of the BS RF chain. The Lambda design features specially coated bearing pins, specially sintered bushings and extra durable rollers. The bushings lubricate the chain internally and ensure a smooth engagement on the sprocket, resulting in reduced wear in many applications.