Meaning and structure of torque-limiting hydraulic coupling codes
2026-01-14 09:24Meaning and structure of torque-limiting hydraulic coupling codes
1 | 2 | 3 | 4 | 5 | 6 | 7 |
Example:562TVVS
562 | T |
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| VV | S |
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1 | Fluid coupling dimensions (section diameter, unit: mm) Possible dimensions: 206, 274, 366, 422, 487,562, 650, 750,866,1000，1150
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2 | Number of hydraulic circuits T: Single circuit hydraulic coupling DT: Dual circuit hydraulic coupling
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3 | Material “Unmarked”: Silicon aluminum alloy U: Iron
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4 | Working fluid “Unmarked”: Mineral oil W: Water
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5 | Extended cavity “Unmarked”: No extended cavity V: With extended cavity VV: With enlarged extended cavity
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6 | Shell “Unmarked”: Standard structure S: Annular cavity structure
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7 | Hydraulic coupling connection method “Unmarked”: The elastic coupling is installed on the outer wheel side N: With basic flange and elastic coupling installed on the output shaft of the hydraulic coupling
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Comparison between normal extended cavity and enlarged extended cavity (TV/TVVS)
model | Design Features | Functional Description |
TV | Ordinary extension chamber | Functional description: The extended chamber stores part of the working fluid in a static state. During the startup process, the working fluid in the extended chamber will enter the working chamber through the spray (oil) hole.
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TVV | Extended auxiliary room | |
T VVS | Extended rear auxiliary chamber + enlarged side auxiliary chamber
| The extended chamber and the side auxiliary chamber store part of the working fluid in a static state. During the motor start-up and acceleration process, part of the working fluid enters the side auxiliary chamber from the working chamber. During the starting process, the working fluid in the extended chamber will enter the working chamber through the spray (oil) hole, which will extend the starting time more than the YOXY type. |
Main components and structures of TV and TVB torque-limited hydraulic coupling
Serial number | Name | Remark | Serial number | Name | Remark |
1 | Active half coupling | HT200 | 10 | Bearings |
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2 | Elastic disk | rubber | 11 | Retaining Ring | Optional |
3 | Driven half coupling | HT200 | 12 | bolt | Optional |
4 | Skeleton oil seal | rubber | 13 | Fusible plug | 100°-160° |
5 | Back room | ZL104 | 14 | shell | ZL104 |
6 | Sealing ring | rubber | 15 | turbine | ZL104 |
7 | Pump impeller | ZL104 | 16 | Bearings |
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8 | Oil filling plug |
| 17 | Skeleton oil seal | rubber |
9 | Sealing ring |
| 18 | Spindle | 45＃ |
Main components and structure of TVNB torque-limited hydraulic coupling
Serial number | Name | Remark | Serial number | Name | Remark |
1 | Input terminal connection plate | HT200/45＃ | 10 | Fusible plug | 100°-160° |
2 | Skeleton oil seal | rubber | 11 | shell | ZL104 |
3 | Back room | ZL104 | 12 | turbine | ZL104 |
4 | Sealing ring |
| 13 | Bearings |
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5 | Pump impeller | ZL104 | 14 | Skeleton oil seal | rubber |
6 | Oil filling plug |
| 15 | Rear semi-active coupling | HT200 |
7 | Bearings |
| 16 | Elastic disk | rubber |
8 | Sealing ring |
| 17 | Brake wheel | 45＃ |
9 | Spindle | 45＃ | 18 | Rear driven coupling | HT200 |
Main components and structures of TVE and TVEB torque-limited hydraulic coupling
The TVEB model is based on the TVE model, with a brake wheel (dashed line area) added.
Serial number | Name | Remark | Serial number | Name | Remark |
1 | Input terminal connection plate | HT200/45＃ | 10 | Fusible plug | 100°-160° |
2 | Skeleton oil seal | rubber | 11 | shell | ZL104 |
3 | Back room | ZL104 | 12 | turbine | ZL104 |
4 | Sealing ring |
| 13 | Bearings |
|
5 | Pump impeller | ZL104 | 14 | Skeleton oil seal | rubber |
6 | Oil filling plug |
| 15 | Rear end pin coupling Ⅰ | 45＃ |
7 | Bearings |
| 16 | Pillar Pin | 45#/ Polyurethane |
8 | Sealing ring |
| 17 | Rear end pin coupling Ⅱ | 45＃ |
9 | Spindle | 45＃ | Serial number | Name | Remark |
List of bearings and seals for torque-limited fluid couplings
Name Specification model |
Bearings | Oil seal (inner diameter x outer diameter x thickness) | ||
206 | 6011 | 6205 | 25×45×10 | 55×80×12 |
274/274D | 6015=2 | 75x100x10=2 | ||
366 | 6016 | 6019 | 80×100×12 | 95×120×12 |
422 | 6018 | 6021 | 90x110x12 | 105x130x12 |
487 | 6021 | 6026 | 105×130×14 | 130×160×14 |
562 | 6024 | 6030 | 120×150×14 | 150×180×16 |
650 | 6028 | 6034 | 140×180×15 | 170×200×15 |
750 | 6032 | 6040 | 160×200×15 | 200×250×15 |
866 | 6036 | 6044 | 180×220×16 | 220×260×18 |
1000 | 6044=2 | 220×260×18=3 | ||
1150 | 6056=2 | 260×300×20=3 | ||
Notice:
The accessories in this detailed list are for reference when repairing and replacing parts (may be adjusted).
This detailed list is applicable to TV, TVV, and TVVS models.
This table is applicable to oil medium hydraulic couplings.