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August 13, 2019
It is common for noise of tower crane slewing bearing during processing, while this situation happened, you should cut off the electricity, to find a solution […]
August 9, 2019
Introduction Tower crane plays an important role in the construction machinery industry, and it is also commonly used in people’s daily life which seems irrevocable tendency. […]
July 6, 2019
There are many factors that affect the friction resistance of the slewing ring, so it is difficult to calculate it accurately. The following formula is usually […]
June 28, 2019
When choosing the raw material of ring gear, we should consider the following principles. Firstly, the mechanical and physical properties of the steel should meet the […]
June 26, 2019
Before installing the slewing bearing, checking the mounting surface of the main machine, and the supporting spare parts should have sufficient strength. The connecting surface should […]
June 18, 2019
installation site The ship crane is mainly composed of rotating tower, boom, fixed base post welded to the deck, lifting, tilting and swinging mechanism, hydraulic power […]
June 17, 2019
Before installing the slewing bearing (turntable bearing), first we have to examine the installation surface. This requires that the bearing has enough stiffness. The connection surface […]
June 14, 2019
The raceway of turntable bearing usually needs heat treatment. The usual process is: forging → roughing → machining → finishing → raceway surface quenching →raceway surface […]
June 13, 2019
When designing the small gear teeth, one of the important parameters is the modulus. The gnawing of the gears produces a gnawing pulsation,which is due to […]