Product characteristics
  • Double-cardanic all-steel coupling
  • High torques at small overall dimensions
  • The coupling complies with the AGMA Standard "9008-B00"
  • Range of use from- 20°C up to + 80°C
  • Application area, e. g. general engineering
  • Both hubs turned outwards
  • Bridging of a bigger shaft distance dimension
Coupling description GEARex® couplings made from steel with grease lubrication andtoroidal sealing ring correspond to the international standard. Beingflexible shaft connections they are suitable for a positive torquetransmission. In addition, they ensure to compensate for axial, radialand angular shaft displacements. GEARex® couplings are used in every range of general engineeringrequesting for high operating safety and a long service life resultingfrom the reliable grease lubrication of the crowned spline. Thecouplings are suitable for horizontal assembly. As special solutionsthey are suitable for vertical assembly, too. Numerous coupling sizes for a torque transmission from 930 Nm to135.000 Nm with shaft dimensions up to a maximum of Ø 276 mm areavailable. The coupling torques may be increased by using specialmaterials. GEARex® couplings are in correspondence with the AGMA standard(American Gear Manufacturer Association). Small dimensions and a lowweight along with a small mass moment of inertia result in a wide rangeof applications of GEARex® couplings.
Operating principle
According to the operating principle of the well-known crownedgear edge pressure in the spline is avoided in case of angular andradial displacements. Moreover, permanent grease lubrication produces abetter friction ratio of the spline with an operation almost free fromwear along with a long service life of the coupling. In order to ensure a regular and verified lubrication in assembledcondition, two connections for hydraulics are arranged opposite to eachother radially on each coupling sleeve. As a result a complete GEARex®coupling has four connections being offset to each other by 90°. The interior of the coupling is sealed by means of toroidal sealing rings (NBR 70 ShA). The feather keys have to be sealed against escape of lubricants during the assembly.
Explosion protection use
GEARex® couplings are suitable for power transmission in drivesin hazardous areas. The couplings are certified and confirmed accordingto EC standard 94/9/EC (ATEX 95) as units of category 2G/2D and thussuitable for the use in hazardous areas of zone 1, 2, 21 and 22. Pleaseread through our information included in the respective Type ExaminationCertificate and the operating and mounting instruction