Turntable spindle bearing is a type of bearing with a special structure that can simultaneously withstand axial and radial loads as well as overturning moments. Integrated support, rotation, transmission.And fixation functions. Its basic structure consists of an inner ring, an outer ring, rolling elements, and isolation blocks. The core component adopts a slewing bearing design. Common classifications include single row four point contact ball.Double volleyball.Cross roller.And three row roller. Suitable for fields such as engineering machinery.Wind power equipment.Port machinery.Medical equipment, etc.
The types of retaining frames used for rotary bearings include integral retaining frames.Segmented retaining frames.Or isolated retaining frames. The overall or segmented retaining frame is made of 20 steel or ZL102 cast aluminum alloy. The isolated retaining frame is made of polyamide 1010 resin. ZL102 cast aluminum alloy.Or QA110-3-1.5 aluminum bronze. With the continuous development of the materials industry.Nylon GRPA66.25 has also been promoted and applied in the design of segmented retaining frames.
The sealing of the turntable spindle bearing is to prevent the leakage of the filled lubricating grease to the outside. On the other hand, it is to prevent external dust, impurities.And moisture from entering the interior of the bearing.And affecting its normal operation. Due to the fact that most turntable spindle bearing operate under heavy loads and low speeds. Therefore, the sealing type of adopts two structures: rubber sealing ring and labyrinth seal. The rubber sealed structure itself has the advantages of simple structure.Small space occupation.And reliable sealing performance. But its disadvantage is that the rubber sealing lip is prone to early aging and loss of sealing performance at high temperatures. Therefore, labyrinth seals should be used under high temperature conditions.
Turntable spindle bearing mostly operate under heavy load and low-speed working conditions. Generally, the lubrication type is filled with grease. Common lubricating greases include calcium based grease.Lithium based grease.Aluminum based grease.And high-temperature grease.
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