aktim@aktim.com.pl
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Rotary couplings without/with leakage recirculation
Rotary couplings transfer hydraulic oil from a fixed to a rotating machine part. The assembly is done in the rotation axis of the subassembly. Depending on the number of junction levels several single-acting or double-acting hydraulic elements can be connected.
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Power hydraulics, CNC Fixtures
On principle, the rotary coupling is only suitable for hydraulic oil. If pneumatic shall be transferred, the catalogued elements can be used providing that the air is filtered and lubricated to guarantee seal greasing and corrosion protection.
In the design stage it needs to be considered that the rotation movement is obstructed by the seal friction. This frictional drag is pressure dependant and must be considered for the drive torque of the rotary table. Corresponding information can be found in the reling diagrams which show the starting torques existing while all junction levels are pressurised.
On principle, the rotary coupling is only suitable for hydraulic oil. If pneumatic shall be transferred, the catalogued elements can be used providing that the air is filtered and lubricated to guarantee seal greasing and corrosion protection.
In the design stage it needs to be considered that the rotation movement is obstructed by the seal friction. This frictional drag is pressure dependant and must be considered for the drive torque of the rotary table. Corresponding information can be found in the reling diagrams which show the starting torques existing while all junction levels are pressurised.
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