Orfs hydraulic fittings is o-ring flat face seal fittings for hydraulic fluid power application. Orfs o-ring size and fittings chart is from SAE J1453 standard, ORFS system assemblies is easy, performance is by male O-ring Face Seal fittings seated ORFS female with swivel nut.
These fittings are capable of providing leak-proof full flow connections in hydraulic systems operating from 95 kPa (28 in Hg) vacuum to working pressures. Here is list of companies’ types:
John deere hydraulic fittings
Komatsu hydraulic fittings
Caterpillar hydraulic fittings
JCB hydraulic fttings
Case tracor hydraulic fittings
Volve hydraulic fittings
Hyundai hydraulic fittings
Thread type of ORFS hydraulic fittings：
UNF is Unified Fine thread as per ANSI/ASME B1.1 in USA and Canada.
Metric thread is as per ISO 68-1, ISO 261 and 262 in Japanese XU.
BSP thread is as per ISO 228 in British and Europe as like Hanomag.
Now, Jiayuan produce ORFS fittings with UNF thread as per ISO 8434-3, also metric thread ORFS fittings for Komatsu construction equipment.
Technical Connections of ORFS Hydraulic Fittings assemblies as follow
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