Supply piledriver four-point contact ball bearing turntable contacts

Four-point contact ball bearing is a separate type of bearings, it can be said to be an angular contact ball bearings can withstand two-way axial load bearing inner and outer ring raceway is peach shaped cross-section, when there is no load or pure radial load When the role of the ball and rings appear as a four-point contact, which is also the origin of the name; when only pure axial load, balls and rings became a two-point contact, can bear axial loads. Four point contact ball bearings can withstand torque loads, both the single row angular contact ball bearings and double row angular contact ball bearings feature. In order to ensure the normal operation of four-point contact ball bearing only the formation of two-point contact. It is generally suitable for those under pure axial load or axial load large combined load of the occasion was a two-point contact, four-point contact ball bearing high speed limit, but also for those high-speed operation of the occasion. First, the four-point contact ball bearings are a single row angular contact ball bearings radial design of the raceway is used to support the role of the axial loads in both directions. Four point contact ball bearings can withstand radial load of up to a fraction of the axial load. Four-point contact ball bearings and double row bearings compared to the axial footprint significantly reduced. SKF QJ designed by the contact angle Four-point contact ball bearing of 35 ° or 45 °. The inner ring is split inner ring. This allows a greater number of loaded grounder in the bearing, thus giving the bearing high load carrying capacity. This SKF four-point contact ball bearings for the separation of design, namely with bowls and keeping the outer frame assembly with the two inner ring halves can be installed separately. Two, four-point contact ball bearing inner (or outer) is composed of two semi-circle from the precise blending, and its integral outer (or inner) radius of curvature of the groove is very small, so that the ball and the inner the outer ring in the four "points" in contact, such as increased radial load capacity, and while in a compact size large axial load in both directions, and has a very good two the ability to limit the axial direction, it is because of its relatively small axial clearance, and its contact angle (generally taken to be 35 °) and relatively big reason. Three, four-point contact ball bearings allow very high speed, and the operation is very smooth, it's double semi-circle can be removed to install separately from the package bearing, so four-point contact ball bearings are used in the engine, because it It can withstand large radial and axial loads at higher speeds. SKF Explorer four-point contact ball bearings of the two inner half is a deep bottom abutments. When this four-point contact ball bearings and cylindrical roller bearings for use with SKF, they have to increase the oil flow. In addition, when removing this four-point contact ball bearings, which can also be used at the furrow bottom fixed puller. Lunda Luoyang Bearing carefully manufacturing, global services! We produce the following series models: four-point contact ball slewing bearing (external gear type): D178794 1787 / 600G 1787 / 674G2 1787 / 710G2 1787 / 800GK 1788 / 1040G2 1787/1075 1787 / 1075G2K 1787 / 1330G2 1788/1700 1789 / 1700GM 1787 / 2650G2 etc. Series models! Four point contact ball slewing bearing (internal gear type): 2788 / 850K 3-646G2 2782 / 1000GK 2787 / 1210G2 2787 / 1400GK1 2787 / 1440G 2768 / 1440G 2787 / 1525G2 2789/2230 2789 / 2240G2 2789/2735 Series models and so on! Four point contact ball slewing bearing (no gear type): 116752 116752K 176792K 1167/530 1167 / 560M 1168/560 11768/630 1167/700 E787 / 760G2 3-640 787 / 800G 787 / 1260G2 71169 / 850Y 787 / 1000G2 787 / 1260G2 787 / 1440G2 787 / 1628G2 787 / 1700KM KDL900-6 LD-Q007 LD-Q007K LD-Q020 and so on series models, Lunda Luoyang Bearing, warmly welcome you to inquiry!