Appel: +(86) 137 7712 9988
Emplacement du bureau:

​No.789 Xiaying Road, Ningbo, Zhejiang China

Industrie leader:

Outils de ligne électrique

Leader industriel:

En Chine

SA-YZ40A Hydraulic Tensioner

SA-YZ40A Hydraulic Tensioner

The machine is suitable to string various conductor,earthwires,OPGW optic cable compounded earthwire and ADSS self-stand optic cable etc.The bull-wheel grooves are made up of high resistance interchangeable nylon sectors.

​About E-Grid

​Ningbo Eastern Grid Power (E-Grid) is China leader in designing, manufacturing and supplying hydraulic brake tensioners for stringing operations, ideal to allow operations to be carried out with the highest accuracy, speed and safety.


Max tension:40kN
Max speed:5km/h
Note:the basic machine performance is calculated at 20°C and at sea level


Bull-wheel diameter:1200mm
Max conductor diameter:32mm


Diesel:51 Kw/2500 rpm
Cooling system:Air
Electrical system:12V

Main component

Engine:Deutz air-cooled diesel engine
Main pump:Rexroth(BOSCH)
Main motor:Rexroth(BOSCH)
Hydraulic instrument :WIKA
Hydraulic valve:Rexroth(BOSCH)

Hydraulic Transmission

Hydraulic open circuit that provides very sensitive tensioning control and negligible deviations of tension in case of speed change.


1.Two Hydraulic half-closed circuit that provides very sensitive tensioning control and negligible deviations of tension in case of speed change.
2. The machine is provided with tension pre-setting system.
2. Bull wheel with wear proof MC nylon lining segment
3. Closed hydraulic circuit and bi-directional variant plunger pump .infinitely variable pull/tension control
4. Rexroth pump and motor, Italian RR reducer ,model C attached reel winder .
5. Spring applied hydraulic released brake, overload protection is on the safe side and easy operation.
6. There is a hydraulic circuit for drive , matching DW2240 A reel stand
7. Negative self-acting hydraulic brake, in case of hydraulic failure ensure to safety.
8.Hydraulic dynamometer with set-point and automatic control of maximum pull, automatic overload protection.
9.Hydraulic oil cooling system
10.Mechanical meter counter.
11.Hydraulic power pack to control 1 drum stand with hydraulic motor or 1 reel winder.
12.Gearbox with 3 operating positions:
–neutral position(with free bull-wheels for conductor loading and unloading)
–Low tensioner position.
–nominal tension position
13.Mechanical actuated front plough stabilizer.
14.Grounding device on board.


Trailer type structure, rigid scaffold, attractive appearance.


We can supply all kinds of stringing equipment according to customers’ requirements.

Working pictures:
SA-YZ40A Hydraulic Tensioner