Meaning and structure of the YOX torque-limiting hydraulic coupling
2025-12-29 09:44Meaning and structure of the YOX torque-limiting hydraulic coupling
1、Meaning of the designation for torque-limiting hydraulic couplings
Example：YOXIIZ560
YO：hydraulic coupling/Fluid coupling
X：Moment-limiting type
IIZ：Structural form
560：Specification（mm）
Structure code | Design Features |
YOX/YOXII | Ordinary extension cavity |
YOXY | Extended rear auxiliary room |
YOXYS | Extended rear auxiliary compartment + enlarged side auxiliary compartment |
YOXIIZ/YOXZL | Basic design + brake wheel |
YOXIIZ***A | External drive + brake wheel |
YOXYZ | Extended rear auxiliary chamber + brake wheel |
YOXYSZ | Extended rear auxiliary chamber + enlarged side auxiliary chamber + brake wheel |
YOXE | Radial detachable |
YOXYE | Radial removable + extended rear auxiliary chamber |
YOXYSE | Radially removable + extended rear auxiliary compartment + enlarged side auxiliary compartment |
YOXEZL | Radial detachable + brake wheel |
YOXYEZ | Radially removable + brake wheel + extended rear auxiliary chamber |
YOXYSEZ | Radially removable + brake wheel + extended rear auxiliary chamber + enlarged side auxiliary chamber |
YOXR/YOXL | Basic design + pulley |
YOXSQ/YOXD | Dual-filled liquid chambers (doubles power) |
YOXF | Composite drainage and filling chamber |
YOXFZ | Composite drain and fill chamber + brake wheel |
2、Comparison of standard extended cavity and enlarged extended cavity (YOX/YOXYS)
model | Design Features | Function Description |
YOX | Ordinary extension cavity | Functional Description: The extended filling chamber stores a portion of the working fluid in a static state. During startup, the working fluid in the extended filling chamber enters the working chamber through the spray (oil) hole. |
YOXY | Extended rear auxiliary room | |
YOXYS | Extended rear auxiliary compartment + enlarged side auxiliary compartment | The extended filling chamber and the side auxiliary chamber store a portion of the working fluid in the static state. During motor startup and acceleration, some of the working fluid enters the side auxiliary chamber from the working chamber. During startup, the working fluid in the extended filling chamber enters the working chamber through the spray (oil) hole, which extends the startup time compared to the YOXY type. |
3、Main components and structure of YOX and YOXIIZ torque-limiting hydraulic couplings
The YOXIIZ type is based on the YOX type, with the active half-coupling removed and a brake half-coupling and brake wheel (dashed line part) added.
Num | name | Remark | Num | name | Remark |
1 | Active half-coupling | HT200 | 10 | bearings |
|
2 | Flexible disk | rubber | 11 | bezel | Optional |
3 | Driven half coupling | HT200 | 12 | bolt | Optional |
4 | skeleton oil seal | rubber | 13 | fusible plug | 100°-160° |
5 | rear auxiliary room | ZL104 | 14 | shell | ZL104 |
6 | sealing ring | rubber | 15 | turbine | ZL104 |
7 | Pump wheel | ZL104 | 16 | bearings |
|
8 | Oil filler plug |
| 17 | skeleton oil seal | rubber |
9 | sealing ring |
| 18 | spindle | 45＃ |
4、YOXIIZ***A Torque-Limiting Hydraulic Coupling: Main Components and Structure
Num | name | Remark | Num | name | Remark |
1 | Input terminal connection disk | HT200/45＃ | 10 | fusible plug | 100°-160° |
2 | skeleton oil seal | rubber | 11 | shell | ZL104 |
3 | rear auxiliary room | ZL104 | 12 | turbine | ZL104 |
4 | sealing ring |
| 13 | bearings |
|
5 | Pump wheel | ZL104 | 14 | skeleton oil seal | rubber |
6 | Oil filler plug |
| 15 | Rear half of the active coupling | HT200 |
7 | bearings |
| 16 | Flexible disk | rubber |
8 | sealing ring |
| 17 | Brake wheel | 45＃ |
9 | spindle | 45＃ | 18 | Rear driven coupling | HT200 |
5、Main components and structure of YOXE and YOXEZ torque-limiting hydraulic couplings
The YOXEZ type is based on the YOXE type, with the addition of a brake wheel (dashed line).
Num | name | Remark | Num | name | Remark |
1 | Input terminal connection disk | HT200/45＃ | 10 | fusible plug | 100°-160° |
2 | skeleton oil seal | rubber | 11 | shell | ZL104 |
3 | rear auxiliary room | ZL104 | 12 | turbine | ZL104 |
4 | sealing ring |
| 13 | bearings |
|
5 | Pump wheel | ZL104 | 14 | skeleton oil seal | rubber |
6 | Oil filler plug |
| 15 | Rear pin coupling I | 45＃ |
7 | bearings |
| 16 | Pillar pin | 45＃/polyurethane |
8 | sealing ring |
| 17 | Rear pin coupling II | 45＃ |
9 | spindle | 45＃ | Num | name | Remark |
6、List of bearings and seals for torque-limited fluid coupling
Name Specification model |
bearings | O-rings (cross-sectional diameter × outer diameter) | Oil seal (inner diameter x outer diameter x thickness) | |||
YOX250 | 6011 | 6205 | 3.5×265 | 25×45×10 | 55×80×12 | |
YOX280 | 6011 | 6012 | 3.5×295 | 55×80×12 | 60×82×12 | |
YOXD280 | 6013=2 | 3.5×295=2 | 65×90×12=2 | |||
YOX320 | 6014=2 | 3.5×245 | 3.5×335 | 60×80×12 | 70×90×12 | |
YOX340 | 6013=2 | 3.5×355 | 65×90×10=2 | |||
YOX360 | 6011 | 6215 | 3.5×370 | 55×75×12 | 75×105×12 | |
YOX380 | 6017 | 6215 | 3.5×400 | 75×110×12 | 85×110×12 | |
YOX400 | 6018=2 | 3.5×305 | 3.5×415 | 90×110×12=2 | ||
YOX420 | 6021=2 | 3.5×300 | 3.5×435 | 90×110×12 | 90×120×12 | |
YOX450 | 6022 | 6024 | 3.5×315 | 3.5×465 | 80×110×10 | 110×140×12 |
YOX500 | 6024 | 6026 | 3.5×360 | 3.5×515 | 120×150×12=2 | |
YOX560 | 6024 | 6030 | 3.5×405 | 5×580 | 120×150×12 | 140×170×15 |
YOX562 | 6024 | 6030 | 3.5×395 | 5×580 | 120×150×14 | 150×180×16 |
YOX600 | 6026 | 6032 | 3.5×420 | 5×620 | 130×150×12 | 160×200×15 |
YOX650 | 6028 | 6034 | 3.5×460 | 5×675 | 140×180×15 | 170×200×15 |
YOX750 | 6032 | 6040 | 3.5×520 | 5×770 | 160×200×15 | 200×250×15 |
YOX866 | 6036 | 6044 | 7-meter Teflon rope | 180×220×16 | 220×260×18 | |
YOX1000 | 6044=2 | 7-meter Teflon rope | 220×260×18=3 | |||
YOX1150 | 6056=2 | 7-meter Teflon rope | 260×300×20=3 | |||
YOX1250 | 6060=2 | 7-meter Teflon rope | 300x340x20=4 | |||