Radial bearings - Import export

Body and rotary table Al alloy, anodised. Spindle steel, casehardened. Spindle bearing maintenancefree. Version Radial play of rotation axis < 0.015 mm. Axial play of rotation axis < 0.02 mm. Repeat accuracy < 0.05°. Spindle selflocking. Note 360° adjustment, no end stop. Scale graduation is 10 increments. Transmission ratio 2116008 = 501 2116012 = 551 2116025 = 501 The rotary stage can be easily combined with other modules of the same size. Drawing reference All counterbores to DIN 74Bm (D6)

Housing washer, shaft washer and rolling elements, bearing steel. Cage, steel. Note Axial ball bearings accept high axial loads from one direction but may not be loaded radially. The bearings are separable. This means the bearing parts can be fitted independently of each other. The main dimensions of the axial ball bearing conform to ISO 104 and DIN 711. Dimensional and running tolerances correspond to tolerance class PN acc. to DIN 620. These tolerance classes are standard and are well suited for most applications.

Material Ballbearing steel 100Cr6. Seal, rubber NBR. Version Sealed on both sides with a spherical outer ring. Can be relubricated. Note The internal construction of the insert bearings corresponds to that of standard Series 6200 and 6300 radial ball bearing. However, they have wider inner rings for easier fastening on shafts. The inner rings are manufactured with a plus tolerance. This results in transition or press fits when using shafts with htolerances. The shaft is secured by 2 grub screws positioned 120° apart on the inner ring. The insert bearings are ready to install and are permanently lubricated with a suitable ball bearing grease. In normal applications, relubrication is not necessary.

Bearing block and carriage aluminium alloy, anodised. Guide columns stainless steel, ground. Spindle stainless steel, rolled thread. Guide bearing maintenancefree. Version Radial play on guide < 0.02 mm. No axial backlash. Spindle selflocking, with additional lock. Note The almost playfree guides and absolutely playfree spindle allow for adjustment without the need to loosen or clamp the spindle. The scale graduation is in 5 or 10 increments; 1 increment corresponds to 0.1 mm of travel. The cross stage can be easily combined with positioning stages, vertical stages and other accessories of respective size by the modular principle.

Steel housing. Nitrile rubber seal. Preloaded highaccuracy bearings with a 60° thrust angle. The bearings accept both radial and axial forces from both directions. Due to their preload, the angular contact ball bearings provide a high level of stiffness, excellent concentricity, precise tool positioning and repeatability. The integrated lowfriction seal effectively keeps dirt away from the bearing, thereby ensuring excellent operating safety and a long service life. The bearing friction coefficient Mrl is a reference value. The moment of inertia corresponds to that of the rotating inner ring. The limiting speeds are applicable after grease is applied. Technical data All bearings are supplied ready for mounting with lubricating grease type KE2P35 acc. to DIN 51825. Housing and shaft tolerances correspond to roundness tolerance class IT2 and perpendicularity tolerance class IT4.

Selflubricating. Hardness 190220 HB. Note The guide bushes are radially and axially applicable. The bearing elements are maintenancefree and wearresistant. The graphite inserts provide lifelong lubrication. Preferably for travel speeds < 0.5 m/s. (Additional lubrication is recommended for extreme loading with a higher travel speeds). Temperature range Temporary temperature peaks up to ca. 200°C. Tolerances The bore for the bearings should correspond to ISO tolerance H7. The tolerance h6 to h7 is recommended for the shaft.