Technical specification ETP-OCTOPUS® Notation ETP-OCTOPUS - XX
|ETP-OCTOPUS®||Dimensions||Transmittable torque or axial force||Screw joint for screw:|
DIN 912, 12.9
|Bore (4 pcs.)|
|T1 resp. T2 = transmittable torque when axial force is 0.||} At pressure p1 (350 bar) resp. p2 (450 bar).||Dimensions subject to alterations without notice.|
|FA1 resp. FA2 = transmittable axial force when torque is 0.|
|* For these torque values the screw joint sets the upper limit for the torque.|
Tt = recommended tightening torque for the screws.
Hub H7 for clearance fit.
N7 for light press fit.
Can also be used without a hub.
Depends on the surrounding components within the system (connections/hoses).
All types of hydraulic oils can be used.
To prevent abnormal wear of the contact surfaces, the use of a scraper to clean the shaft is recommended. It can be mounted in a ring which is fastened with screws to the flange.
NUMBER OF PRESSURE SETTINGS
The number of cycles mainly depends on the pressure. The following guide values can be used:
p = 300 bar: 500 000 cycles.
p = 350 bar: 300 000 cycles.
p = 450 bar: 100 000 cycles.
More cycles may cause the sleeve to fatigue.
T and FA changes linearly between the given pressures for a certain shaft size. We do not recommend pressures above 450 bar.
The surfaces between ETP-OCTOPUS and the shaft should when moving, create a minimum amount of friction in order to avoid wear, but at the same time when clamping give enough holding force.
This will also be maintained if, as we recommend, the surfaces are reasonably lubricated with mineral oil. The spiral tracks inside the sleeve ensures that any unnecessary amount of lubricant is transferred away. Grease or Molybdendisulfide based lubricants should not be used.
For models which clamp only to the outside or in both directions there are possible solutions. For such cases please send us information and we will then send a suggestion/quotation.