proper hose assembly guidelines

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q  This webinar will be available afterwards at www.fluidpowerworld.com & email

q  Q&A at the end of the presentation q  Hashtag for this webinar: #FluidPowerWebinar

Before We Start

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Meet your Speakers

MODERATOR FEATURED SPEAKER

Michelle DiFrangia Assistant Editor Fluid Power World

Josh Cosford Contributing Editor Fluid Power World

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Proper Hose Assembly Guidelines


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Hydraulic hoses exist on nearly every hydraulic machine. It is critical to ensure hose assemblies are fabricated with care to ensure reliability of the hose and the hydraulic system they’re part of. This presentation covers the essentials of hydraulic hose assembly to ensure the machine is safe and dependable.


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-How to ensure the hose assembly is free from contamination


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-How to ensure the hose assembly is free from contamination -How to measure a fitting to ensure the most secure crimp


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-How to ensure the hose assembly is free from contamination -How to measure a fitting to ensure the most secure crimp -Which fittings are required for different types of hydraulic hose


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-How to ensure the hose assembly is free from contamination -How to measure a fitting to ensure the most secure crimp -Which fittings are required for different types of hydraulic hose -How to ensure finished hose length is accurate


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Important First Step Alert!


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Identify what you need


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Is it a new hose assembly?

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Is it a new hose assembly?

Is it a replacement hose assembly?

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New hydraulic hose assemblies should be

chosen with consideration to their specific application


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S T A M P E D


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Size Temperature Application Material Pressure Ends Delivery


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Size T A M P E D


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Size -includes the ID, OD and length


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Size -includes the ID, OD and length -hose must be sized appropriately to handle flow with little pressure drop


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Size -measured length is critical


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Size -cut off length is subtracted to obtain hose cut length


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Size -the cut off factor of each fitting is subtracted from total hose length


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Size Temperature A M P E D


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Size Temperature -what is the temperature of the fluid? -what is the ambient temperature?


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Size Temperature -typical hydraulic hose is good for -40°F to 212°F (-40°C to 100°C)


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Size Temperature -high temperature hose is good for 300°F plus -for high ambient temperatures


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Size Temperature -low temperature hose is good for -58°F to 212°F -for cold ambient conditions


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Size Temperature Application M P E D


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Size Temperature Application -where is the hose used? -what is the required bend radius?


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Size Temperature Application -what are the external conditions? -is there a risk of abrasion, corrosion or electrical conductivity?


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Size Temperature Application Material P E D


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Size Temperature Application Material -the type of fluid being used is critical to hose selection


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Size Temperature Application Material -standard mineral-based hydraulic fluid is compatible with most hose types


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Size Temperature Application Material -exotic fluids, like phosphate ester, require synthetic hoses, like EPDM


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Size Temperature Application Material Pressure E D


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-pressure capacity is the defining criteria for hydraulic hose -pressure dictates construction Pressure E D


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-hose construction dictates the pressure capacity of a hydraulic hose


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High pressure, reduced flexibility

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Size Temperature Application Material Pressure Ends D


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-type of threads -male or female -swivels -straights or elbows -permanent or reusable Ends D


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-reusable fittings are also called field attachable -crimped on fittings are permanent Ends D


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Reusable Hose Ends

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Crimped Hose Ends

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Size Temperature Application Material Pressure Ends Delivery


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-how many hose assemblies do you need? -how soon do you need them? -any special tagging or lay line information? Delivery


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What if you are replacing and old hose?


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-do not try to repair the old hose, unless absolutely necessary -follow the STAMPED protocol to ensure the correct replacement is made


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Cutting the hose -ensure only a specialized hose cutting saw is used


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Cutting the hose -ensure you cut exactly 90° across the hose


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Crimp the hose to the specifications spelled out by the hose and fitting manufacturer


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Clean the hose assembly


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Clean the hose assembly -use approved hose cleaning apparatus -immediately cap the hose ends to protect from environmental contamination


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Clean the hose assembly


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Questions?

MODERATOR FEATURED SPEAKER

Michelle DiFrangia Assistant Editor Fluid Power World

Josh Cosford Contributing Editor Fluid Power World

#FluidPowerWebinar

q  This webinar will be available at www.fluidpowerworld.com & email

q  Tweet with hashtag #FluidPowerWebinar

q  Connect with Fluid Power World

q  Discuss this on EngineeringExchange.com

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