The Parker Prädifa PDF wiper rings have an A7 profile their task is to prevent dust, dirt, grains of sand, and metal chips from entering in dynamic rod guides. This is achieved through their special shape. They
thus largely prevent the formation of lines, protect the friction parts and
extend the service life of the seals.
The A7 profile should always be used in conjunction with an elastomer wiper
The Parker Praedifa PDF scraper ring profile A7 results in cylinder a technically clean one degree. There are no special screw rings and retaining plates required. It doesn’t require tight fits or metal inserts. The possible corrosion when using a metal scraper between the metal cage and cylinder head appearance can be prevented. For the Groove, turning is not a fine fit necessary.
| d | D | h | d1 | H | Item number | |
| 44,5 | 56 | 1,9 | 55 | 2 | A7 4055W5015 | |
| 45 | 56 | 2 | 55 | 2,1 | A7 4056W5015 | |
| 56 | 67 | 2 | 66 | 2,1 | A7 5068W5015 | |
| 59,5 | 71 | 1,9 | 70 | 2 | 47 5090W5015 | |
| 63 | 74 | 2 | 73 | 2,1 | A7 6033W5015 | |
| 69,5 | 81 | 1,9 | 80 | 2 | 47 6981W5015 | |
| 70 | 82 | 2 | 81 | 2,1 | A7 7082W5015 | |
| 75 | 87 | 2 | 86 | 2,1 | A7 7517 W5015 | |
| 78 | 89,5 | 1,9 | 88,5 | 2 | 47 7815W5015 | |
| 80 | 92 | 2 | 91 | 2,1 | 47 8092W5015 | |
| 87 | 98,5 | 1,9 | 97,5 | 2 | A7 8799W5015 | |
| 90 | 102 | 2 | 101 | 2,1 | 47 9012W5015 | |
| 97 | 108,5 | 1,9 | 107,5 | 2 | A7 9708W5015 | |
| 100 | 112 | 2 | 111 | 2,1 | A7 A012 W5015 | |
| 104 | 115,5 | 1,9 | 114,9 | 2 | A7 A215 W5015 | |
| 110 | 122 | 2 | 121 | 2,1 | A7 B022 W5015 | |
| 118 | 129,5 | 1,9 | 128,5 | 2,1 | A7 B829 W5015 | |
| 120 | 132 | 2 | 131 | 2 | A7 C032 W5015 | |
| 124 | 136 | 2 | 135 | 2,1 | A7 C036 W5015 | |
| 130 | 150 | 2,5 | 148,6 | 2,1 | A7 D050 W5015 | |
| 140 | 160 | 2,5 | 1 58,6 | 2,6 | A7 E060 Ws015 | |
| 150 | 170 | 2,5 | 168,6 | 2,6 | A7 F070 W5015 | |
| 160 | 180 | 2,5 | 1 78,6 | 2,6 | A7 G080 W5015 | |
| 180 | 200 | 2,5 | 1 98,6 | 2,6 | A7 J020W5015 | |
| 200 | 220 | 2,5 | 219,6 | 2,6 | A7 1020 W501s | |
Scope of application:
PDF scraper ring profile A7 for axial moving rods on hydraulic, working cylinders and rod guides.
Operating temperature: -40 to + 100. C
Sliding speed wedge:=1 m / s
Installation instructions:
The PDF wiper ring profile A7 is delivered as a closed ring.
Avoid pressurization against the backing of the ring. It can be snapped into closed grooves.
Material:
The standard material is plastic
Based on polyamide (PA66).
Under special operating conditions
(Temperature, speed, etc.)
please contact our
Application Technology Department.
Order example:
PDF wiper ring profile A7 for one
Bar diameter of 80 mm.
Order number: A7 8092 W5015
80x92x2 A7: Profile designation
8082: Dimension key W5015: standard value
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