Versatility, power, compactness and low running costs are the main characteristics of B & C Hydraulics BQ series pumps. All the components subject to wear are contained in a cartridge unit that can be easily removed for inspection and/or replacement without disconnecting the pump from the circuit, drastically reducing expensive machine down time.
The cartridge contains a rotor, vanes and inserts, a cam ring, two flexible plates and two covers. During operation the rotor is driven by a splined shaft coupled to the drive unit. As the rotation speed increases, centrifugal forces, in combination with the pressure generated behind the vanes, push the vanes outwards, where they follow the profile of the cam with a sufficient contact pressure to ensure adequate hydraulic sealing. The two opposed pumping chambers formed by the elliptical profile of the cam cancel out radial loads on the shaft bearings, thereby giving them extremely long lifetimes.
The design characteristics of the BQ series pumps make them particularly suited to applications in the mobile field…
The special design of the flexible plates enables any thermal expansion in the rotor to be compensated for and to adequately cope with any sudden change in pressure.
Furthermore, the counter-pressure chambers positioned between the flexible plates and the cartridge covers balance the internal pressure; this ensures that the correct clearance between the rotor and the flexible plates is always maintained so guaranteeing maximum volumetric efficiency (see drawing).
The B & C Hydraulics BQ series pumps is available in five versions of single pump (BQ01, BQ02, BQ03, BQ04, BQ05) from 8 to 230 litres/minute at 1200 rpm, and seven versions of double pump (BQ21, BQ31, BQ41, BQ42, BQ51, BQ52, BQ54) from 55 to 370 litres/minute at 1200 rpm), with maximum powers of over 300 HP. The BQ series pumps are extremely compact and are supplied with ISO norm mechanical couplings and SAE norm hydraulic fittings. This makes them very easy to install and guarantees their interchangeability with other similar pumps.
We would like to confirm receipt of your shipment for our initial order: PO# 07623. It was a pleasure having started working with you and we hope this is just the start of a good business relationship between our companies. Again, thank you very much and we look forward for more future business opportunities with you.Read More
Thank you, Joanna. Mark’s quote was from a technical discussion which answered many questions that I have been trying to get without success from other suppliers. Please thank Mark for his time and expertise; it was so refreshing to have a knowledgeable person rather than a sales assistant.Read More
As their North West Business Exporter of the Year, the Federation of Small Businesses asked Hydraulics Online to speak at the 2018 […]Read More
Mark’s entry into the fluid power industry was more than a little by chance but he now finds himself leading a […]Read More