New cooler bellhousings boost performance and reliability in hydraulic systems

11 July, 2024

Cooler bellhousing of the KPV series from R+L Hydraulics

Cooler bellhousings serve as damping connecting elements between electric motors and hydraulic pumps, in combination with an oil-air cooler. They are widely used in the oil hydraulics sector. R+L Hydraulics, a company specialising in hydraulic components and power transmission products, emphasises the compact design and durability of the KPV series. “Our top priority in developing this series was to integrate a cooling element that withstands dynamic pressure loads without losing cooling power,” states Patrick Laupitz, head of the domestic sales team at R+L Hydraulics. Laupitz adds that the prismatic cooling elements in the KPV series can continually withstand pressure peaks up to 16 bar, as demonstrated through dynamic fatigue strain tests.

The prismatic cooling elements in the KPV series offer superior cooling performance. According to Laupitz, “R+L Hydraulics was the first manufacturer to equip catalogue cooler bellhousings with prismatic standard cooling elements.” He explains that previous cooler bellhousings typically used finned tubes as heat exchangers, which provided limited cooling power and were mainly used for leakage oil cooling. The modern prismatic cooling elements now allow for installation into the mainly pressureless return line. However, pressure peaks can still occur in certain configurations, often undetectable with conventional pressure measuring devices. Laupitz notes that these pressure peaks, which used to cause occasional breakdowns of heat exchangers, are now effectively managed in the KPV series.

The KPV series cooler bellhousings are available for motor sizes from 80 to 180, featuring noise-damping versions that can be combined with foot brackets. Laupitz highlights the full interchangeability of the installation dimensions according to VDMA 24 561, covering both the installation length and the attachment position of the foot bracket.

In addition to cooler bellhousings, R+L Hydraulics develops, manufactures, and sells a variety of components for fluid and power transmission products. These include industrial couplings, hydraulic accessories such as torsional and jaw couplings, bellhousings, damping elements, heat exchangers, coolers, and hydraulic tanks. Their products are utilised in various industries, including mechanical engineering, ship and vehicle construction, the steel industry, offshore technology, and specialised plant engineering applications.

For further information please visit: https://www.rl-hydraulics.com/en/home/

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