Meaning and Explanation of Hydraulic Coupling Model

The model of hydraulic couplings can be a confusing topic for many customers. They often ask why different coupling models vary, and sometimes even minor changes in letters can lead to significant price differences. Next, we will delve into the meaning of hydraulic coupling model and the rich information they contain.

Part 1

In the model number of a hydraulic coupling, the first letter typically represents its hydraulic transmission characteristics. Taking YOX as an example, the “Y” indicates that the coupling belongs to the hydraulic transmission type. The “O” clearly identifies it as a coupling, while the “X” signifies that the coupling is a torque-limiting type. Through such numbering rules, we can clearly understand the transmission characteristics and classification of different models of hydraulic couplings.

Part 2
In the numerical part of a hydraulic coupling model number, the indicated numbers primarily reflect the coupling’s specifications or the diameter of its working chamber. For example, “450″ in some models represents a working chamber diameter of 450 mm. This numbering method allows users to intuitively understand the size of the coupling and its applicable scenarios.

Part 3
Other letters that may appear in the model number, such as “IIZ,” “A,” “V,” “SJ,” “D,” and “R,” represent specific functions or structures of the coupling. For instance, “IIZ” in some models indicates that the coupling is equipped with a brake wheel; “A” signifies that the model includes a pin coupling; “V” means an elongated rear auxiliary chamber; “SJ” and “D” represent water-medium couplings; and “R” indicates that the coupling is equipped with a pulley.

Please note that due to different manufacturers potentially adopting different enterprise standards, the representation of hydraulic coupling model may vary. For example, YOXD400 and YOXS400 might refer to the same coupling model, while YOXA360 and YOXE360 could also denote the same product. Although the structural types are similar, specific specifications and parameters may differ by manufacturer. If users require specific model dimensions or have special requirements for overload coefficients, please consult us and specify your needs when placing an order.