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precision rotary table bearings for Hydrostatics and aerostatics for precision rotary tables.

【Time:2012-04-06】【Sources:The station】【Author:Administrator】【Click:2517】

 precision rotary table bearings for Hydrostatics and aerostatics for precision rotary tables.

 Accuracy to the micrometre. Hydrostatics and aerostatics for precision rotary tables.

One company expands its range of hydro and aerostatic rotary tables for precision mechanical engineering. The new product series are  the first to use direct drives developed and produced by the company. 

With its precision solutions in the field of hydrostatic rotary tables, The company has long been an established partner of the engineering industry, supplying hydrostatic bearing precision rotary tables with diameters from 300 to 4,000 mm. Apart from complete tables, they also supplies ready-to-install hydrostatic bearing components as radial-axial bearings for rotary tables up to a diameter of 10,000 mm. 

In response to continuing strong demand for precision solutions from the European and particularly the German machine tool industry, they has extended its product range to include aerostatic rotary tables with table diameters of 200 to 1,200 mm. While hydrostatic models achieve a flatness and rotation accuracy of 1 µm, aerostatic solutions improve this by a factor of five, or down to less than 0.2 µm. What's more, they can be connected to existing pneumatic systems, and because they don't require hydraulic oil, they are cleaner. This makes aerostatic rotary tables ideal for measuring and high-precision machine tool manufacturing, while hydrostatic solutions are predominantly used for gear cutting machines, (vertical) grinding and milling machines, vertical lathes and machining centres. 

Application determines technical solution 

However, not only the precision requirements determine where the different types of rotary table are used. Equally important are the rotary table bearing capacity and machining speed. While hydrostatic rotary tables work with a feed pressure of the medium of approximately 30 to 40 bar, aerostatic systems use only around 6 bar. This difference in feed pressure and compressibility of the support medium means hydrostatic tables have five to ten times the bearing capacity of aerostatic tables of the same size. 

At the same time, the higher rotary table bearing capacity of hydrostatic rotary tables and the associated use of hydraulic oil limits the possible processing speed compared to aerostatic tables. The viscosity of hydraulic oil comes with a shearing friction that leads to power loss and heating of the assembly. In contrast, the circumferential speed of aerostatic bearing tables is theoretically.

unlimited because shearing friction can not occur with air. In practice, circumferential speeds of 40 to 50 m/s are achieved. The figure for hydrostatic solutions is approximately10 m/s. 

Ultimately it's the application that determines whether customers choose aerostatic or hydrostatic rotary tables from them. The advantages of both types compared to conventional, antifriction bearing tables are firstly the freedom from wear which guarantees sustained precision. Secondly, both systems come with better damping characteristics. The damping characteristics of the two media, hydraulic oil or air, reduce the upswing of the whole system. That results in much higher machined surface qualities. Tool wear is reduced, and higher machining speeds are possible.Precision bearings require precision drives Because the precision of rotary tables doesn’t only depend on the type of  rotary table bearing, but also on the quality of the direct drives, they has developed and now produces its own torque motors. They are an integral part of the hydrostatic and aerostatic rotary tables. Although they are tailored to each customer's application, what they all have in common is a much lower torque ripple than the usual solutions on the market. The power loss is up to 25 percent and the nominal current up to 15 percent lower. The heat acting on the surrounding components is correspondingly low.  

This combination of high-precision rotary table bearings and precision drives is just what customers want. They benefit from the fact that all the components in our rotary tables .The result is top technical standards plus attractive prices.

Luoyang Hongyuan Bearing Technology Co.Ltd is the only professional manufacturer of high precision bearings in China. Our leading products are YRT series rotary table bearings, Crossed Roller Bearings,axial angular contact ball bearings ZKLDF.

YRT Standard Series YRT50, YRT80, YRT100, YRT120, YRT150, YRT180, YRT200, YRT260, YRT325, YRT395, YRT460, YRT580, YRT650, YRT850, YRT950, YRT1030 ,YRT1200,

YRTS high rotational speed Table Bearings YRTS200 ,YRTS260,YRTS325,YRTS395,YRTS460,

RTM Axial and radial bearing with the angle measuring system bearings YRTM150,YRTM180,YRTM200,YRTM260,YRTM325,YRTM395,YRTM460, 

Axial angular contact ball bearings ZKLDF,ZKLDF100,ZKLDF120,ZKLDF150,ZKLDF200, ZKLDF260,ZKLDF325,ZKLDF395,ZKLDF460 .

Crossed roller bearings including INA SX Models SX011814, SX011818, SX011820, SX011824, SX011828, SX011832, SX011836, SX011840, SX011848,SX 011860,SX011868,SX 011880,SX0118/500 ,

IKO CRB,CRBC,CRBH serie CRBC5013, CRBC6013, CRBC7013, CRBC8016, CRBC9016, CRBC10020, CRBC11020, CRBC12025, CRBC13025, CRBC14025, CRBC15025, CRBC15030,CRBC20025, CRBC20030, CRBC20035, CRBC25025,CRBC25030 , CRBC25040, CRBC30025,CRBC30035, CRBC30040,CRBC40035,CRBC40040, CRBC40070, CRBC50040,CRBC50050, CRBC50070,CRBC60040,CRBC60070, CRBC600120, CRBC70045, CRBC70070, CRBC700150, CRBC80070, CRBC800100. 

CRBH5013 A, CRBH6013 A, CRBH7013 A, CRBH8016 A, CRBH9016 A, CRBH10020 A, CRBH11020 A, CRBH12025 A, CRBH13025 A, CRBH14025 A, CRBH15025 A, CRBH15030 A, CRBH20025 A, CRBH25025 A ,

THK RB,RE, RU series RB5013, RB6013, RB7013, RB8016 RB9016, RB10016, RB10020, RB11012 ,RB11015, RB11020, RB12016, RB12025, RB13015, RB13025, RB14016 ,RB14025, RB15013, RB15025, RB15030, RB16025, RB17020, RB18025, RB19025, RB20025, RB20030, RB20035, RB22025, RB24025, RB25025, RB25030, RB25040, RB30025, RB30035, RB30040, RB35020, RB40035, RB40040, RB45025, RB50025, RB50040, RB50050, RB60040, RB70045, RB80070, RB90070, RB1000110, RB1250110, RE5013, RE6013 , RE7013, RE80146, RE9016, RE10016, RE10020, RE11012, RE11015, RE11020, RE12016, RE120258, RE13015, RE13025, RE14016, RE14025, RE15013, RE15025, RE15030, RE16025, RE17020, RE18025, RE19025, RE20025, RE20030, RE20035, RE22025, RE24025, RE25025, RE25030, RE25040, RE30025, RE30035, RE30040, RE35020, RE40035, RE40040, RE45025, RE50025, RE50040, RE50050, RE60040, RE4010, RU42, RU66, RU85, RU124(G), RU124X, RU148(G), RU148X, RU178(G), RU178X, RU228X, RU228(G), RU297(G), RU297X, RU445X, RU445(G), RA5008, RA6008, RA7008, RA8008, RA9008, RA10008,RA11008, RA12008,RA13008, RA14008, RA15008, RA16013, RA17013, RA18013, RA19013, RA20013. RA5008C, RA6008C, RA7008C, RA8008C, RA9008C, RA10008C,RA11008C, RA12008C,RA13008C, RA14008C, RA15008C, RA16013C, RA17013C, RA18013C, RA19013C, RA20013C. 

crossed taper roller bearing XR,JXR series XR496051, XR678052, XR766051, XR820060, XR855053, XR882055, XR889058, XR897051, JXR637050, JXR652050, JXR699050, 


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