Description Area of application: For restricted space in transverse direction Heavy-duty Ball Runner Block for heavy machine construction with extremely high load-bearing capacity High torque capacity The same high load ratings in all four main directions of loading Low noise level and outstanding travel behavior Features Different preload classes Lube fittings with metal threads on all sides Can be used on all SNS Ball Guide Rails High rigidity in all load directions – permits applications with just one runner block per rail End-face fastening thread for all attachments Long-term lubrication is possible over several years Product description load error Technical data Load capacities and load moments Size 55 65 C N 139000 223000 C0 N 245000 404000 Mt Nm 4410 8810 Mt0 Nm 7780 16000 ML Nm 3960 8160 ML0 Nm 6990 14800 The calculation of the dynamic load ratings and load moments is based on a stroke length of 100,000 m as per DIN ISO 14728-1. However, often only 50,000 m is actually stipulated. For comparison: Multiply the values C, M t and M L from the table by 1.26. General technical data Size 55 65 amax 1) m/s² 250 vmax m/s 3 m kg 4.8 9.8 μ 2) 02 ... 03 Material CS Operating conditions Size 55 65 Permissible ambient temperature (min ... max) 3) -10 °C ... +80 °C 1) If Fcomb > 2.8 • Fpr : amax = 50 m/s2 2) Without friction of seal 3) Up to 100 °C permissible for short periods. For operation at negative temperatures, please consult us. Legend Symbol Description Unit amax Maximum acceleration travel m/s2 C Dynamic load capacity N C0 Static load capacity N m Mass kg ML Dynamic longitudinal moment load capacity Nm ML0 Static longitudinal moment load capacity Nm Mt Dynamic torsional moment load capacity Nm Mt0 Static torsional moment laod capacity Nm vmax Maximum permissible speed m/s μ Friction coefficient General Notes The general technical data and calculations apply to all Ball Rail Systems i.e. to all Ball Runner Blocks and Ball Guide Rails. Specific technical data relating to the individual Ball Runner Blocks and Ball Guide Rails is listed separately. Preload classes To cover the widest possible range of applications, Rexroth Ball Runner Blocks are available in different preload classes. The following preload classes are available: Ball Runner Block without preload (preload class C0) Ball Runner Blocks with moderate preload (preload class C1) Ball Runner Blocks with average preload (preload class C2) Ball Runner Blocks with high preload (preload class C3) To prevent reductions to the service life, the preload should not exceed 1/3 of the load on bearing F. In general, the rigidity of the Ball Runner Block rises with increasing preload. If vibrations occur, select a correspondingly high preload (≥ preload class C2). Guide systems with parallel rails When choosing the preload class, pay attention to permissible parallelism offset of rails too ("Accuracy class selection criterion"). When specifying ball rail systems of accuracy class N, we recommend p
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