S0708460K
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Main Pump (Denison T6DMY Series)
Vane Pressure Feed
The intra-vane design provides a means of controlling the outward thrust of the vane against the ring and
maintains tip loads within reasonable limits. In the intra-vane cartridge, full system pressure is continuously
applied only to the area between the vane and insert. This area is small and thrust is correspondingly light.
During vane travel through pressure areas, full system pressure is applied against the bottom area of the
outer vane. The valving of pressure to and from the bottom area of the vane is through holes drilled in the
rotor, as shown in Figure 4. This selective application of pressure maintains the vane in substantially
constant radial hydraulic balance in all positions.
Vane tip wear is compensated for automatically. As the vane wears, pressure moves the vane further out in
the rotor slot holding the vane tip against the cam ring.
Figure 4 PRESSURE FEED TO VANES IN INTRA-VANE CARTRIDGE
Reference
Number
Description
1 Pressure to Insert
2 Vane
3 Rotor
4 Direction of Rotation
5 Ring
6 Sharper Edges (Lead
Direction of Rotation
7 Pressure to Bottom of Vane
Reference
Number
Description
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