Bearing lubrication
Most of the slewing bearings work under the conditions of heavy load and low speed, under normal circumstances, the use of grease lubrication type lubrication of the bearings can achieve extremely satisfactory results, commonly used grease has calcium-based grease, lithium-based lubrication Grease, aluminum grease, and high temperature grease, etc., users can choose the most suitable grease according to the specific circumstances.
Bearing seal
The seal of the slewing bearing is on the one hand to prevent the leakage of the filled grease, and on the other to prevent the outside dust, impurities and moisture from intruding into the bearing and affecting its normal operation. Since the slewing bearing is mostly operated under heavy load and low speed, the seal type of the bearing adopts two structures, a rubber seal ring and a labyrinth seal. The rubber seal structure itself has a simple structure, small footprint, reliable sealing properties and has been widely used, but its shortcoming is that in the high temperature state, the rubber seal lip is easy to be aged and lose the sealability, so at the high temperature Labyrinth seals should be used for turntable bearings operating under working conditions.
Three rows of combined roller slewing bearings (slewing bearings)
The three-row roller slewing ring has three separate upper and lower raceways and radial raceways, so that the load of each row of rollers can be exactly determined and can withstand various loads at the same time. It is the bearing capacity of four products. The biggest one is that the shaft and radial dimension are large and solid. It is especially suitable for heavy machinery requiring large diameters, such as bucket wheel excavators, wheeled cranes, ship cranes, ladle slewing and large-tonnage cranes and other machinery. on.
Double row angular contact ball slewing bearing (slewing bearing)
The double-row slewing bearing has three races and the raceway must be specially designed. The double-row ball slewing ring has large axial and radial dimensions and a solid structure, and is particularly suitable for handling cranes such as tower cranes and truck cranes that require medium or larger diameters.
Single row crossed roller slewing bearing (slewing bearing)
The single-row cross roller slewing bearing consists of two races. It has compact structure, light weight, high manufacturing precision, small assembly clearance, high installation accuracy, and 1:1 cross roller arrangement. Force, greater radial force, and tipping moment. It is widely used for lifting transportation, construction machinery and military products.
Single-row four-point contact ball slewing bearing (slewing bearing)
The single-row four-point contact ball bearing slewing bearing is composed of two seat rings. The structure is compact and light in weight. The steel ball is in contact with the arc race at four points and can simultaneously bear axial force, radial force and tilting moment.
production flow chart
Raw materials → Forging → Car processing → Detection → Heat treatment → Grinding → Detection → Conditioning → Fine grinding → Fine grinding → Testing → Assembling → Inspection → Packaging → Packing → Transportation → Customers.
Rotary slewing bearing material: 50Mn, 42CRMO, GCR15SIMN, 9CR18MO.
Rotary bearing precision: P0, P6, P5, P4, P2 precision from low to high, the price will be from low to high.
