Joint and Cardan Shafts

3 2 Technical Description Series 0.100 0.100 0.100  Service Phone Europe  + 49 (0) 71 42 / 353-0  Service Phone North America  + 1 – 2 6 9 / 6 3 7 7 9 9 9 Depending on the configu- rations, the Origi- nal Elbe Universal Joint Shafts consist of fork parts, joint crosses, needle or roller bear- ings, splined length extensions and pre- cision tubing. Fork parts are made using closed die forgings while joint crosses are made from cold press or closed die forgings. Highly stressed areas of the universal drive shafts are heat treated to obtain an optimum com- bination of hardness and toughness. Subsequently, joint cross journals and bearing seats are ground to very fine tolerances. Each fork part is bored to enable mounting of the needle or roller bearing housings. Hub splines for length extension are broached and the mating ex- ternal splines are rolled. If it becomes necessary to reduce the sliding force of the splines, they can be coated with a high quality plastic. The rolling process for producing splines hardens the surface and obtains a higher load capacity which re- sults in a lower wear at the tooth flanks compared to milled splines. This rolling process is advantageous because it does not interrupt the grain flow. When assembling Universal Joint Shafts the bearing hous- ings, and as a result the joint cross- es, are locked into place with snap rings. The U-Joints are greased according to customer specifications (i.e. with high temperature grease, extended life grease or low temperature grease). There are three methods to maintain the u-joint bearing: • Central Lubrication: Grease nipples are located inside at the joint crosses. The bearing housings are supplied with grease through lube passages. • External Lubrication: The grease nipple is attached at the outside of one of the bearing housings with the grease dis- tributed through lube passages. • Maintenance-free: Under corresponding application conditions and/ or using optimised sealing systems it is possible to dispense with lubrication. Optimised sealing systems offer superior protection against the penetration of dirt and moisture so that they can be perfectly used under severe environ- mental conditions where mud, dust, sand and water are present. Furthermore the environment will also be protected since leaking of grease from the bear- ing housings is prevented. As previously mentioned, there are two bearing ver- sions available: • Roller Bearings, using this type of bearings the service life is higher by a factor of 2 or 3 over the needle bearing version. • Needle Bearings After assembly, Cardan Shafts are balanced at the appropriate operating speed. This ensures that trou- blesome vibrations resulting in damaged compo- nents are avoided. General Specifications of Universal Joint Drive Shafts Series 0.100: Maximum angle of deflection: up to 35° Torque range: up to 35000 Nm Flange or Hub Connection Md Nom : Nominal torque for preselection on the basis of the operating moment. The respective per- missible torque has to be calculated individually de- pending on the remaining operational characteris- tics, such as shock load, angle of deflection, rotation speed, etc. (see technical annex, item 6.2 and 6.3) Md Lim : Limit torque, which may be transmitted mo- mentarily from the universal drive joint without func- tional damage if limited frequency is ensured. The listed torque ratings refer to the standard ver- sions, hub, flange, etc. The actual torque allowed depends on the design. For more detailed information please refer to the which follow datasheets.