Structural features of YRT bearings

As an important part of the machine tool, the turntable has always been the focus of machine tool design. As a key component for carrying workpieces, the rotary accuracy, rigidity and combined bearing capacity of the turntable all directly affect the machining performance of the machine tool. Among them, the choice of bearing plays a direct and decisive role. The traditional solution of turntable bearings generally uses two or more sets of radial and thrust bearing combinations, the purpose is to enable the turntable to bear axial load, radial load and overturning moment at the same time, although this scheme is mature, there are also such as The structural design of the turntable is complicated, and the bearing installation and maintenance are inconvenient.

HRTG series high-precision turntable bearings break through the traditional selection and arrangement of bearings. One set of bearings can meet the requirements of the combined load of the turntable, which greatly simplifies the structure of the turntable and reduces the cost of design, installation and maintenance. The combination of one set of radial rollers, two axial rows of thrust rollers and the cage assembly makes the structure compact and saves space for the overall structural design of the turntable; there are mounting holes on the bearing, which is very convenient for installation; With preload, high rigidity and high rotation accuracy can be achieved without adjusting the clearance; the inner ring and outer ring of the bearing are equipped with oil injection holes, which is convenient for regular oil injection maintenance. The rotation accuracy of HRTG rotary table bearings can reach up to 1um, which is much higher than Ordinary bearings.

Thanks to our rich production lines, in addition to the HRTG standard series suitable for low-speed and short-cycle applications, we also have corresponding products and solutions for more diverse applications. HRTGS high-speed series can be used in low friction torque and relatively high-speed occasions, and is suitable for the selection of bearings in direct drive motor turntables and double swing heads. HKLDF-B thrust angular contact ball series has extremely high speed, extremely low frictional moment, and can also bear combined load. It is suitable for high-speed rotary table, vertical grinding machine, measurement and control field of turning and milling machining center, etc. HRTGM with integrated angle measurement system series, through the modular design of the integrated angle measurement system, realizes the integration of precise rotation and precise angle control of the turntable, simplifies the shaft system structure, and is suitable for CNC rotary table and indexing table of machining centers In other occasions, the angle measurement accuracy can reach ±1 arc second.

HRTG series

Thrust-centripetal composite structure can bear bidirectional axial load, radial load and overturning moment at the same time. The bearings are evenly distributed with installation holes, and the bearings can be fixed directly with bolts; the bearings have been preloaded before leaving the factory, and there is no need to adjust the clearance for installation; this series is suitable for low speed, short operation cycle, high rigidity and precision requirements Occasions, such as rotary table, dividing head, etc.

HRTGS high speed series

HRTGS series rotary table bearings have the same external structure and dimensions as HRTG series rotary table bearings, but its special internal structure design makes it have a higher limit speed, and the friction force is low and uniform in the whole speed range. Therefore, it is suitable for occasions similar to HRTG series applications but requiring lower friction and higher speed, such as bearing applications for direct drive shafts, especially for the selection of bearings in CNC turntable structures.

For higher precision requirements, this series can also provide higher axial and radial runout accuracy.

HKLDF-B thrust angular contact ball series

Thrust angular contact ball series can withstand combined loads, have extremely high speed and low frictional moment, and can guarantee high rotation accuracy at the same time. Ideal for applications with such requirements, such as high-speed rotary tables, milling, grinding, honing heads, and precision measuring and testing equipment, etc.

HRTM series with integrated angle measuring system

The angle measurement system is integrated on the basis of the HRTG series, which can realize the precise measurement of the angle, and the highest accuracy can reach ±1 arc second, which is very suitable for applications that have high requirements for angle positioning accuracy.

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