Technology Behind Free-wheel Clutches
The dimensions of GMN ball bearing Free-wheel Clutches are according to deep groove ball bearings DIN 625 bearing sizes 62. The double sealed "2RS" type shows exactly the same dimensions.
With our ball bearing Free-wheel Clutches we combine a bearing like configuration of inner and outer ring (made from ball bearing steel AISI E 52100) balls and retainer with a narrow, space saving insert element. Please note that the load capacity of the unit is smaller than of the original bearing. The "RS" seals are adequate to bearing "RD" seals. They are not capable to seal against liquids. With the size 6203 is sealing in just one side possible to keep the original width of the bearing.
For proper function of the complete unit the correct gap size is inevitable. Please note that the correct gap size will be achieved when the clutch is pressed onto the shaft and into the housing with the correct tolerances.
The stated torque capacities in the data sheets show the optimum values. The torque is transmitted reliably when the clutch is mounted within the specified tolerances. Please note that the tolerances of the keywayed inner rings of series FKN are specified to achieve some press fit. The reason for this is that the keyway alone would not be able to transmit the full torque. Please have also a look at torque capacity - insert element.
Open GMN ball bearing clutches are shipped rust protected - not lubricated. Sealed ball bearing clutches "RS" and "2RS" are shipped grease lubricated for life time. Please note also our indications for lubrication.
A single RS-seal is mounted beside the insert element. Please see installation for the definition of the engagement direction.
Further information on the spring system and engagement curve could be found here.