Crossed roller bearings for high precision applications

This technical publication has been produced with a great deal of care and attention and all data have been checked for their accuracy. However, no liability can be assumed for any incorrect or incomplete data. Product pictures are for illustrative purposes only and must not be used for design work. Designs must only be prepared in accordance with the technical information, dimension tables and dimension drawings in this edition. In case of doubt, please consult the INA engineering service. Due to constant development of the product range, we reserve the right to make modifications. The sales...

Crossed roller bearings INA crossed roller bearings SX have long been the optimum solution in technical and economic terms where compact, easy-to-fit bearings with high tilting moment load carrying capacity, rigidity and accuracy are required in a bearing position. These bearings can support radial loads, axial loads from both directions, tilting moments and any combination of loads. As a result, conventional bearing arrangements with radial and axial bearings can generally be reduced to a single bearing position. This reduces, in some cases considerably, the costs and work required in the design...

Product range Overview/comparison Bore diameter Load carrying capacity1) radial Crossed roller bearings axial on both sides stat. ■ Design of crossed roller bearing. 1) The data refer to the smallest and largest bearing diameters. tilting moment stat.

Maximum circumferential speed with Bearing clearance grease lubrication oil lubrication standard clearance 4 m/s (nϫDM = 76 400) with standard clearance 8 m/s (nϫDM = 152800) with standard clearance 2 m/s (nϫDM = 38 200) with preload 4 m/s (nϫDM = 76 400) with preload Operating temperature 4 m/s (nϫDM = 76 400) with preload 2 m/s (nϫDM = 38 200) with preload Sealed on both sides adjustable from clearance-free to preloaded 2 m/s (nϫDM = 38 200) with preload 2 m/s (nϫDM = 38 200) with preload 4 m/s (nϫDM = 76 400) with preload Determined at 20% of maximum permissible tilting moment, without axial...

8 Ordering example, ordering designation 10 Load carrying capacity and life 10 Static load carrying capacity 10 Definition of static load carrying capacity 10 Checking the static load carrying capacity 14 Dynamic load carrying capacity 14 Definition of dynamic load carrying capacity 14 Definition of basic rating life 14 Determining the basic rating life 16 Influences on the operating life of crossed roller bearings 18 Static and dynamic load carrying capacity of fixing screws 18 Conditions for checking load carrying capacity 18 Indicator of load carrying capacity 18 Static limiting load diagrams...

Sealing of the bearing arrangement INA seal profiles Design of bearing arrangements Sealing of the bearing position Fixing screws Crossed roller bearings SX Location using clamping rings Bearing seat depth Crossed roller bearings XV Crossed roller bearings XSU Permissible flatness and perpendicularity deviation of the adjacent construction Fitting Preparations for fitting Design of the assembly area Preparing the adjacent construction for fitting of the bearings Checking the bearing seat and bearing mounting surfaces on the adjacent construction Delivery condition of crossed roller bearings Storage...

Product index sorted alphanumerically Crossed roller bearing corresponding to dimension series 18 to DIN 616, not sealed, greased, with clearance, reduced clearance or preloaded, outer ring circumferentially split and held together by three retaining rings Crossed roller bearing, sealed on both sides, greased, preloaded, centred on the inside and outside diameter, bearing rings can be screw mounted directly on the adjacent construction Crossed roller bearing, sealed on both sides, greased, with clearance, can be preloaded by locknut, inner ring circumferentially split, outer ring can be screw...

Suffix Description VSP Bearing with preload RR Corrosion-resistant design with INA special plating Corrotect®

Ordering designation Ordering example Designation (Figure 1) Every crossed roller bearing has a designation. This is given in the dimension tables and describes the standard design of the bearing. The designation consists of several parts. It indicates, taking the crossed roller bearing SX as an example: ■ the type – crossed roller bearing SX ■ the series – series 01 ■ the dimension series – dimension series 18 to DIN 616 ■ the dimension-specific part – size 24. The ordering designation gives an abbreviated description of the crossed roller bearing. It consists of: ■ the designation ■ suffixes...

Unless stated otherwise in the text, the values used in this catalogue have the following symbols, units and definitions. Basic dynamic load rating Basic static load rating Rolling element pitch circle diameter Rolling element diameter Application factor Factor for additional safety Static radial load factor Dynamic bearing load (axial) Ultimate axial load Dynamic bearing load (radial) Static bearing load (axial) Equivalent bearing load (static) Static bearing load (radial) Dynamic load factor Basic rating life in millions of revolutions Basic rating life in operating hours Tightening torque...

Load carrying capacity and life Static load carrying capacity The size of the crossed roller bearing required is dependent on the demands made on its: ■ static and dynamic load carrying capacity ■ life ■ operational reliability. Dynamic load carrying capacity, see page 14. Definition of static load carrying capacity Crossed roller bearings that undergo rotary motion only infrequently, undergo slow swivel motion, rotate only slowly or are subjected to load while stationary are dimensioned on the basis of their static load carrying capacity since the permissible load in these cases is determined...

⑀ – Load eccentricity parameter kNm M0k Static tilting moment load kN F0a Static bearing load (axial) mm DM Rolling element pitch circle diameter (dimension tables) kN F0q Equivalent bearing load (static) – fA Application factor (see Table 1, page 12) – fS Factor for additional safety – f0r Static radial load factor (see Figure 1) kNm M0q Equivalent tilting moment load (static). Load eccentricity parameter ⑀ Load eccentricity parameter ⑀ Static radial load factor Static radial load factor Figure 1 · Main load directions and static radial load factor f0r for crossed roller bearings 11