Bearingless Hydraulic Motor

 

Hydraulic motors are used in numerous applications such as heavy equipment, manufacturing machinery, and many more. A traditional hydraulic motor uses bearings to support the rotating shaft. However, bearings can wear down over time, causing maintenance issues and ultimately reducing motor performance. In recent years, a new type of hydraulic motor has emerged: the bearingless hydraulic motor.

 

A bearingless hydraulic motor is a revolutionary piece of technology that doesn't use bearings to support the rotating shaft. Instead, it relies on a film of high-pressure fluid that acts as a lubricant and helps to suspend the shaft in mid-air. This way, the motor can run without any contact between the rotating shaft and the motor housing, reducing wear and tear and practically eliminating the need for maintenance.

 

One of the most significant benefits of a bearingless hydraulic motor is that it has a longer lifespan compared to traditional hydraulic motors. Because there is no metal-to-metal contact, the motor runs smoother, quieter, and generates less friction, leading to better mechanical efficiency and longer service life. In addition, bearingless motors tend to be more compact and lightweight, making them suitable for applications where space is limited.

 

Another benefit of a bearingless hydraulic motor is its higher efficiency. With traditional hydraulic motors, a significant amount of energy is lost due to friction and wear. In contrast, bearingless motors can operate at a higher efficiency with little to no energy loss, leading to significant cost savings in the long run.

 

Lastly, bearingless hydraulic motors provide a more environmentally-friendly alternative to traditional motors. These motors consume less power and generate less waste heat, contributing to lower carbon emissions and a greener planet.

 

In conclusion, bearingless hydraulic motors are a modern alternative to traditional hydraulic motors that offers numerous benefits such as a longer lifespan, higher efficiency, and a more environmentally-friendly operation. With these advantages, it's not difficult to see why more and more industries are turning to bearingless hydraulic motors in their operations.

 

 

 

◎ Advanced stator and rotor parameters design, with low starting pressure, high efficiency and stable low speed operation;

◎ High operating pressure and high output torque;

◎ Advanced shaft seal design, with high back pressure bearing capacity;

◎ Advanced and reliable linkage shaft design, with a long motor service life;

◎ Advanced oil distribution mechanism design, with high oil distribution accuracy and automatic wear compensation;

◎ The motors can be used in series and parallel; when they are connected in series, they should be connected to the external drain pipe;

◎ Tapered roller bearing support design, with a large radial load carrying capacity, so that the motor can be used directly drive the operating mechanism.

 

 

Displacement, cc/r		63	80	100	125	160	200	250	305	400
Flow, LPM	Cont.	75	75	75	75	75	75	75	75	75
	Int.	95	95	95	95	115	115	115	115	115
Speed, RPM	Cont.	960	851	739	575	477	385	308	246	191
	Int.	1150	908	924	719	713	577	462	365	335
Pressure, MPa	Cont.	17	20	20	20	20	20	20	20	17
	Int.	21	24	24	24	24	24	24	24	21
Torque, Nm	Cont.	145	217	271	338	433	541	677	826	888
	Int.	179	260	325	406	520	650	812	885	925
Max. allowable back pressure		14MPa

 

◎ The intermittent operating pressure refers to the Max. allowable operating pressure at the motor inlet port, and the continuous operating pressure refers to the pressure difference between the inlet port and the return port.

◎ Do not operate the motor at the Max. speed and the Max. pressure at the same time.

◎ The motor operating time per minute must not exceed 10% under intermittent operating conditions.

◎ Recommended oil: anti-wear hydraulic oil; Viscosity: 37-73cst; Oil cleanliness: IS018/13; Max. operating oil temperature: 80 ℃.

◎ With special dynamic seal design, the Max. allowable back pressure of the motor can be up to 10MPa; however, in order to obtain the good service life and comprehensive mechanical performances, the back pressure should not exceed 5MPa. If it is exceeded, it is recommended to connect the external drain pipe; when connecting the external drain pipe, ensure that the motor is always filled with oil. The external drain pipe should be throttled at a certain degree, to maintain a back pressure of more than 3.5 Bar. When connecting the external drain pipe, in addition to maintaining a low back pressure, the wear contaminants generated inside the motor can be removed and a certain cooling effect can be achieved.

◎ There should be a running-in period before the motor is operated at full load. It is recommended to run for 1h at 30% of the Max. operating pressure.

 

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