Crankshaft connecting rod type low speed large torque motor is mainly used in the hydraulic transmission system of various mechanical equipment such as open-pit mine engineering construction machinery equipment, overload conveying equipment, extra heavy electrical machinery, oil and gas mine electromechanical equipment, ship manufacturing main deck machinery equipment, grinder, metallurgy, plastic machinery equipment, geological environment drilling equipment, etc. In particular, it is mainly used for bolt drivers of horizontal injection molding machines, Hoisting gear , drum drivers, drivers of various slewing mechanisms, crawler chassis and small wheel traveling mechanism drivers and other transmission system mechanical equipment. External five-star crankshaft connecting rod type low speed large torque Hydraulic motor Class A products have the following basic knowledge and performance:

1、 Performance

1. The starting torque is large (the starting mechanical energy of the system is 0.9 and above), the stability at low speed is good, and it can operate smoothly and normally at very low speed.

2. The space between the curved rotor and the moving rod is supported by roller bearings, which has high mechanical energy.

3. It has a high work efficiency mass ratio and relatively small volume and weight.

4. It has an eccentric shaft and a five piston rod mechanism with low excitation working frequency, so it has the characteristics of low noise.

5. The plane compensating valve distributor system has good reliability and less leakage. The piston rod and cylinder hole are made of plastic piston rod

Ring seal, so it has high volume efficiency.

6. The rotation direction can be reversed, and the outlet shaft is allowed to bear radial and axial forces.

2、 Relevant basic knowledge

Low speed and large torque hydraulic motors are used more and more, and users should master some basic knowledge

1. Larger working pressure refers to larger working pressure at air inlet, and continuous working pressure refers to normal operating pressure difference

2. The motor cannot operate normally at the same time under higher working pressure and higher rotating speed

3. Under the condition of intermittent normal operation, the duration of normal operation shall not exceed 10% per minute

4. It is strongly recommended to use 68 # mechanical lubricating oil with viscosity of 37 - 73 cSt and cleanliness of ISO 18/13

5. Higher normal operating temperature80

6. Before the motor runs normally under overload, it should be run in at 40% of the higher working pressure for 1 hour

7. The motor is allowed to have a high back pressure of 10 Mpa, but it is recommended that it should not exceed 5MPa. If it does, it should be connected to the leaking oil pipe joint.