Parker Prädifa Wiper AY

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The wear-resistant Ultrathan® Prädifa AY double wiper ring serves to prevent the ingress of dust, dirt, sand, and swarf. This is achieved by its special design which largely prevents scoring, protects the guiding parts, and extends the service life of the seals. In addition, the sealing lip facing the media side reduces the residual oil film. The AY double wiper ring closes the cylinder vis-à-vis the environment.

The AY wiper can be installed in undercut grooves without requiring special screenings or brackets. In addition to higher wear resistance, the utilization of polyurethane offers good resistance against ozone and UV radiation. When PTFE rod seals are used we recommend the combination with the Ultrathan® AY wiper to minimize the residual oil film.

  • Extreme wear resistance.
  • Excellent media resistance in case of suitable compound selection.
  • Suitable compounds available for special requirements of the chemical process industry.
  • Suitable compounds available for special requirements of the food processing industry.
  • Dimensions according to DIN ISO 6195, Type C.
  • Installation in closed and undercut housings.
  • Additional sizes of machined products available on short notice.

Range of application

For axially operated rods in hydraulic and pneumatic working cylinders, tappets, and rod guidance.

Operating temperature                                    -35 °C to +100 °C

Pneumatics                                                   -35 °C to +80 °C

Sliding speed                                                    ≤ 2 m/s

Compounds

Ultrathan® P5008 is a polyurethane-based Parker compound with a hardness of approx. 93 Shore A. In comparison with other polyurethane materials currently available on the market it excels because of its increased heat resistance, improved against hydrolysis, and lower compression set values.

Installation

The profile Parker Praedifa AY double lip wiper ring can easily be snapped into grooves of simple design. Any contact of the wiper lip with piston rod eyes or other connecting parts should be avoided.

However, we recommend the wiper lip to be out-side the housing, so that the wiped- off dirt falls off.

d D H h D2 L Order code
8 13 4.1 3.1 10.5 3.5 AY0080P5008
10 16 4.8 3.6 12.5 4 AY1003P5008
12 18 4.8 3.6 14.5 4 AY1020P5008
14 20 4.8 3.6 16.5 4 AY1040P5008
15 21 4.8 3.6 17.5 4 AY1521P5008
16 22 4.8 3.6 18.5 4 AY1059P5008
18 24 4.8 3.6 20.5 4 AY1080P5008
20 26 4.8 3.6 22.5 4 AY2026P5008
22 28 4.8 3.6 24.5 4 AY2020P5008
25 31 4.8 3.6 27.5 4 AY2050P5008
28 36 5.8 4.5 31 5 AY2080P5008
30 38 5.8 4.5 33 5 AY3001P5008
32 40 5.8 4.5 35 5 AY3002P5008
35 43 5.8 4.5 38 5 AY3039P5008
36 44 5.8 4.5 39 5 AY3060P5008
37 45 5.8 4.5 40 5 AY3070P5008
40 48 5.8 4.5 43 5 AY4002P5008
45 53 5.8 4.5 48 5 AY4045P5008
50 58 5.8 4.5 53 5 AY5002P5008
51 59 5.8 4.5 54 5 AY5010P5008
55 65 6.8 5.3 58 6 AY5050P5008
56 66 6.8 5.3 59 6 AY5060P5008
60 70 6.8 5.3 63 6 AY6003P5008
63 73 6.8 5.3 66 6 AY6030P5008
65 75 6.8 5.3 68 6 AY6065P5008
70 80 6.8 5.3 73 6 AY7000P5008
75 85 6.8 5.3 78 6 AY7085P5008
80 90 6.8 5.3 83 6 AY8030P5008
85 95 6.8 5.3 88 6 AY8050P5008
90 100 6.8 5.3 93 6 AY9000P5008
100 110 6.8 5.3 103 6 AYA005P5008
110 125 9.5 7.5 114 8.5 AYB000P5008
120 135 9.5 7.5 124 8.5 AYC020P5009
125 140 9.5 7.5 129 8.5 AYC030P5008
138 158 9.5 7.5 142 8.5 AYD838P5008
140 155 9.5 7.5 144 8.5 AYE001P5008
160 175 9.5 7.5 164 8.5 AYG001P5008

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