Parker Prädifa Wiper AG

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The wear-resistant Ultrathan® Parker Prädifa AG wiper ring serves to prevent the ingress of dust, dirt, sand, and swarf at the rod eyes of a hydraulic cylinder. This reduces the risk of “seizure” on the swivel bolt due to external contamination. The good wiping effect is achieved by the special design of the wiper lip.

In addition, the wiper lip opens up during lubrication and allows excess grease to escape. The proven P5008 polyurethane compound stands for abrasion resistance, minor permanent deformation, and robustness against external mechanical impact. The wiper is securely held in place in the axially open groove via press-fit of the metal jacket vis-à-vis the inner groove diameter. As the wiper lip is flush with the rod eye it is largely protected against external mechanical damage.

  • Robust seal profile for harshest operating conditions.
  • Extreme wear
  • Suitable for fully automatic
  • Simple fabrication of the

Range of application

Hydraulic cylinders and valve tappets

Operating temperature                                    -35 °C to +100 °C

Sliding speed                                                    ≤ 2 m/s

Compounds

The standard material of the elastomer part is Ultrathan® P5008, a polyurethane-based Parker compound with a Shore A hardness of approx. 93. In comparison with other polyurethane materials currently available on the market, it excels because of its increased heat and wears resistance.

Installation

The Parker Praedifa profile AG Ultrathan® wiper rings are manufactured with a slightly oversized outer diameter D, thus ensuring a secure press-fit in the groove DH8 after installation. Any contact of the wiper lip with piston rod eyes or other connecting parts should be avoided.

d D L a Order code
25 35 4 1 AG2535Z5071
30 40 4 1 AG3040Z5071
35 45 4 1 AG3545Z5071
38 48 4 1 AG3848Z5071
40 50 4 1 AG4050Z5071
45 55 4 1 AG4555Z5071
50 60 5 1 AG5060Z5071
50 65 5 1 AG050FZ5071
55 65 4.2 1 AG5565Z5071
60 70 4.5 1 AG6071Z5071
60 75 5 1 AG6028Z5071
63 80 5 1 AG6380Z5071
65 80 5 1 AG6509Z5071
70 80 4.5 1 AG7081Z5071
70 85 5 1 AG7005Z5071
70 85 7.5 1 AG7085Z5071
71 86 5 1 AG7110Z5071
75 90 5 1 AG7590Z5071
80 90 4.5 1 AG8091Z5071
80 95 5 1 AG8005Z5071
80 95 6.5 1 AG8006Z5071
85 95 4.5 1 AG8596Z5071
85 100 4 1 AG8500Z5071
85 100 6 1 AG8506Z5071
90 105 4 1 AG9005Z5071
90 105 6 1 AG9030Z5071
95 110 6.5 1 AG9510Z5071
95 110 8 1.5 AG9511Z5071
100 115 7 1 AGA016Z5071
100 120 6.5 1 AGA020Z5071
105 120 7 1 AGA105Z5071
110 125 6.5 1 AGB023Z5071
110 125 8 1.5 AGB110Z5071
110 130 4.5 1 AGB131Z5071
120 135 6.5 1 AGC006Z5071
120 135 8 1.5 AGC120Z5071

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Parker

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