Hydraulic Tensioners
Hydraulic tensioners (also known as hydraulic tensioning equipment or stringing tensioners) are specialized, hydraulically powered machines designed to apply precise, controlled tension to conductors, cables, steel strands, or ropes during installation or construction. They are core equipment for overhead power line stringing, cable laying, and prestressing engineering.
These machines use hydraulic pressure to drive a tensioning system (typically large grooved wheels or hydraulic cylinders), creating stable, adjustable pulling force.
The controlled tension prevents sagging, conductor damage, or uncontrolled release, ensuring safe and accurate installation.
Equipped with safety features like automatic braking, over-tension protection, and real-time tension monitoring to guarantee operational safety.
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SPECIFICATIONS
Hydraulic Tensioners Construction
SA-ZWY-10
SA-ZWY-20/30/40
SA-ZY-30
SA-ZY-40/50/60/80
SA-ZY-2×30
SA-ZY-2×40
SA-ZY-2×50
SA-ZY-2×60
SA-ZY-2×70
SA-ZY-2×80
SA-ZY-4*40
SA-ZY-4*50
SA-ZQY-2*40
SA-ZQY-2*60
SA-ZQY-2*90
Hydraulic Tensioners PARAMETER
| Specification | SA-ZWY-10 | SA-ZWY-20 | SA-ZWY-30 | SA-ZWY-40 |
|---|---|---|---|---|
| Dual-Pump Operation | ||||
| Max Tension (kN) | 12 | 25 | 35 | 45 |
| Max Continuous Tension (kN) | 10 | 20 | 30 | 40 |
| Min Starting Tension (kN) | 1.5 | 2.5 | 2.5 | 2.5 |
| Single-Pump Operation | ||||
| Max Tension (kN) | 6 | 15 | 15 | 25 |
| Max Continuous Tension (kN) | 5 | 10 | 10 | 20 |
| Min Starting Tension (kN) | 1 | 2 | 2 | 2 |
| Max Pull Speed (m/min) | 6 | 5 | 5 | 5 |
| Bullwheel Diameter (mm) | 500 | 1500 | 1500 | 1500 |
| Groove Quantity | 5 | 5 | 5 | 5 |
| Groove Spacing (mm) | 40 | 55 | 55 | 55 |
| Max Conductor Diameter (mm) | / | 40 | 40 | 40 |
| Max Optical Fibre Cable Diameter (mm) | / | 21 | 21 | 21 |
| Dimensions (mm) | 1680 × 1070 × 1400 | 3950 × 1850 × 2200 | 3950 × 1850 × 2200 | 3950 × 1850 × 2300 |
| Approx. Weight (kg) | 700 | 1800 | 1800 | 2300 |
| Specification | SA-ZY-40 | SA-ZY-50 | SA-ZY-60 | SA-ZY-80 |
|---|---|---|---|---|
| Max Tension (kN) | 45 | 60 | 60 | 90 |
| Max Continuous Tension (kN) | 40 | 50 | 50 | 80 |
| Max Continuous Speed (km/h) | 5 | 5 | 5 | 5 |
| Max Pull Speed (m/min) | 40 | 50 | 50 | 80 |
| Min Starting Tension (kN) | 3 | 5 | 6 | 7 |
| Bullwheel Diameter (mm) | 1500 | 1500 | 1500 | 1500 |
| Groove Quantity | 5/6/7 | 5 | 6 | 7 |
| Groove Spacing (mm) | 55/60/70 | 55 | 70 | 60 |
| Max Conductor Diameter (mm) | 40 | 40 | 40 | 40 |
| Dimensions L × W × H (mm) | 3650 × 1800 × 1950 | 4540 × 1870 × 2640 | 4540 × 1870 × 2640 | 4750 × 1870 × 2640 |
| Approx. Weight (kg) | 3000 | 3400 | 3600 | 4800 |
| Engine | Cummins / Weichai | Cummins / Weichai | Cummins / Weichai | Cummins / Weichai |
| Reducer | Italy BONFIGLIOLI | Italy BONFIGLIOLI | Italy BONFIGLIOLI | Italy BONFIGLIOLI |
| Hydraulic Pump | Germany REXROTH | Germany REXROTH | Germany REXROTH | Italy REXROTH |
| Hydraulic Motor | Germany REXROTH | Germany REXROTH | Germany REXROTH | Italy REXROTH |
| Control Valve | Germany REXROTH | Germany REXROTH | Germany REXROTH | Italy REXROTH |
| Proportional Valve | Germany REXROTH | Germany REXROTH | Germany REXROTH | Italy REXROTH |
| Solenoid Valve | Italy ATOS | Italy ATOS | Italy ATOS | Italy ATOS |
| Control Unit / PLC | Italy IND-CLICK | Italy IND-CLICK | Italy IND-CLICK | Germany REXROTH |
| Hydraulic Hose | Italy MANULI | Italy MANULI | Italy MANULI | Italy MANULI |
| Control Voltage | 24V | 24V | 24V | 24V |
