Product category:
Hydraulic Components
News Release from: Holmbury | Subject: H and HQ flat face couplings
Edited by the Engineeringtalk Editorial
Team on 21 April 2008
Couplings pass 200-hour salt spray test
HQ series couplings are finished with a new 'high- impact' hardening process, which gives them a silver grey colour.
The H and HQ series of flat face couplings are engineered for longer life, greater durability and better flow characteristics They were designed to meet the new life test specified in ISO16028:1999/Amd.1:2006(E), which has increased from a hundred thousand to one million pressure pulse cycles
This article was originally published on Engineeringtalk on 6 Feb 2001 at 8.00am (UK)
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Hydraulic couplings cope with high pressure pulses
Holmbury's new 2001 hydraulic product catalogue includes the new VEP range of 600 bar, screw-together flat-faced couplers, with sizes available from 3/8 to 1.5 inches
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After successfully completing the one million cycle tests, inspection of the new couplings indicated they still had plenty of working life left.
An additional user benefit is a reduction in the pressure drop, which has been achieved by using 3D CAD to optimise the flow path.
Improvements range from 15 to 40%, which helps improve power transmission, increase operating efficiency and reduce energy consumption.
H series couplings have a zinc-plated finish and are ideal for general plant applications.
HQ series couplings are finished with a new 'high- impact' hardening process, which gives them a silver grey colour.
It helps make them more resistant to Brinelling, wear and corrosion.
These couplings pass the 200-hour salt spray test as stipulated by certain major OEMs.
HQ couplings are therefore particularly suited to high-pressure pulse applications such as excavator hammer circuits and demolition equipment.
Coupling sizes 3/8 to 1in will be introduced during April/May 2007 while the remaining sizes will complete the range from 1/8 to 2in and are scheduled for introduction during 2008/9.
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