Page 59 - 2019 PRODUCT TECHNICAL MANUAL - HYDRAULICS V4-8

SPECIFICATIONS SUMMARY
IMPULSE LIFE
Although two or more hoses manufactured to different industry standard specifications may have identical Maximum Working Pressures, their suitability for the application must be considered. An important factor to consider is the magnitude and frequency of the pressure impulses that the hose assembly will experience.
FLAME RESISTANCE
All RYCO Hoses (except RYCO JS, T3600C, H5000C, M1, MP1, PW2, TW1, TP7, TP7N, TP7T, TP7TN, TP8, TP8N, TP8T, TP8TN, TP3000, RQP5, SRX, SRF, T5, RTH1 & PL1 Series) meet Flame Resistant Designation ”U.S. MSHA” of the U.S. Department of Labor, Mine Safety and Health Administration and also comply with Flame Resistant requirements of Australian Standard AS 2660 and Method of Test AS 1180.10B. Contact RYCO Technical Department for more information.
MINIMUM BEND RADIUS
Minimum Bend Radius figures published are the radius to the cover of the Hose at the inside of the bend.
RYCO Hose Assemblies exceed the required impulse test requirements when bent to the published Minimum Bend Radius. Hose assemblies bent to smaller than the Minimum Bend Radius will have shortened lifetime.
ANTI-STATIC
“Anti-Static” refers to Hoses or Hose Assemblies being sufficiently electrically conductive to drain off static electricity. According to the requirements of AS 2660 Clause 2.2, the Hose or Hose assembly shall have an electrical resistance
(measured from inside surface to outside surface) of less than 1 megohm per metre, when tested according to Method of Test AS 1180.13A. For applications requiring Anti-Static Hydraulic Hose Assemblies including, but not limited to, underground coal mines, where there is danger of ignition from static electricity discharge, only special Anti-Static Hose can be used.
RYCO DIEHARDTM Hoses and COALSPRAY comply with the requirements of AS 2660 and Method of Test AS 1180.13A.
NON CONDUCTIVE
Certain applications require that a Hose, or Hose Assembly, be Non-Conductive to prevent electrical current flow.
For applications that require a Hose to be electrically Non-Conductive including, but not limited to, applications near high voltage electric lines, only special Non-Conductive Hoses can be used.
SKIVE/NON-SKIVE
Skiving refers to removing the cover at the ends of the Hose where the Hose Couplings are to be attached*. Most RYCO combinations of Hose and Couplings are Non-Skive.
In a Non-Skive application, RYCO couplings bite down through the cover and grip the wire reinforcement.
Some combinations of RYCO Hose and Couplings require skiving. If skiving is required, it is clearly stated in both the Hose Section and the Couplings Section.
OUTSIDE DIAMETERS
See page 153 for reference chart of outside diameters.
SAFETY GUIDE – MAXIMUM TEMPERATURE LIMITS
Some RYCO Hose Series are not listed on page 58: T1F, TJ2D, M2G, M1, RTH1, MP1.
These Hoses are specific purpose Hoses, and their temperature limits are specified in the Hose Section of this Product Technical
Manual. Contact RYCO Technical Department for any further queries.
Other RYCO Hose Series are listed on page 58. The Maximum Working Temperatures for these hoses, as listed in the Hose Section of this Product Technical Manual are for use with general purpose, mineral (petroleum) oil based hydraulic fluids, except where otherwise stated. Temperature limits for other hydraulic fluids, and some other common applications, are listed on page 58.
CAUTION:
Life expectancy of hoses is shortened at high temperatures. Detrimental effects increase when temperature is elevated, and also when; operating pressure, flow velocity, duration and frequency of exposure, and level of impurities in the media are high. Actual service life at temperatures approaching the recommended limits will depend on the particular application and the fluid being used.
Maximum Working Temperatures refer to the temperature of the media in the hose; not the environmental temperature around the outside of the hose. Please contact RYCO Technical Department for environmental temperatures in excess of 80°C (176°F), except RQP1, RQP2, RQP5 and RQP6 Series where environmental temperature is the same as media temperature.
Maximum Working Temperatures shown are for continuous temperatures. Slightly higher intermittent temperatures (up to 10% of time) may be acceptable with some hoses and some fluids, if reduced service life is acceptable. Please contact RYCO Technical Department for more information.
DO NOT expose Hose to Maximum Temperature and Maximum Working Pressure at the same time.
The fluid manufacturer’s recommended maximum operating temperature for the fluid must not be exceeded. If different to the temperatures listed in the following table, the lower limit must take precedence. We recommend keeping the hose filled with the pressure medium at all times. Further information available on request.
CONNECTING PARTNERSHIPS 57
TECHNICAL ADAPTORS COUPLINGS HOSE INTRODUCTION