Design:
Claron Style PMW metal cased Rod wiper is designed to remove potential system contaminents from a reciprocating rod during the negative stroke. It is classified as a medium to heavy duty rod wiper/scraper. The wiper is precision moulded in 98o Shore Polyurethane with an accurately machined lip. The high modulus (stiffness) of this material allows the wiper to scrape tenatious mud and dirt from the rod. The wiper has a metal case designed to press fit in the housing thus retaining the wiper. The metal case is coated with a corrosion resistant yellow Zinc plating. The press fit design of this wiper allows it to be used in simple ‘open ended’ housing.
Operating conditions:
Optimum service conditions are affected by temperature, speed and surface finish.
Refer to Appendix 1 for further information.
| AU Polyurethane | ||
| DIN | Hydraulic Fluid Description | °C |
| H | Mineral oil without additives | 100 |
| H-L | Mineral Fluid with anti corrosion and anti ageing additives | 100 |
| H-LP | Mineral oil as HL plus additives reducing wear, raising load | 100 |
| H-LPD | Mineral oil as H-LP but with detergents and dispersants | 100 |
| H-V | Mineral oil as H-LP plus improved viscosity temp. | 100 |
| HFA E | Emulsions of mineral oil in water. Water content 80-95% | 40 |
| HFA S | Synthetic oil in water. Water content 80-95% | 40 |
| HFB | Emulsions of water in mineral oil. Water content 40% | 40 |
| HFC | Aqueous polymer solutions. Water content 35% | ns |
| HFD R | Phosphoric acid ester based | ns |
| HFD S | Chlorinated hydrocarbon based | ns |
| HFD T | Mixtures of HFD R and HFD S | ns |
| HEPG | Polyglycol based | ns |
| HETG | Vegetable Oil based | 60 |
| HEES | Fully synthetic ester based | 60 |
Housing:
For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining
tolerances refer to the catalogue page of selected seal. Refer to Appendix 4 for value of tolerance symbols.
Fitting:
Style PMW is designed to press fit into an open ended housing. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing.
For a detailed checklist, refer to Appendix 3.
| Part Number | Refer Seal H8 Selection |
+0.020 Nominal -0.000 |
|||||
| Ød1 | ØD1 | L1 | L2 | ||||
| PMW 1000 | 1,000 | 1,375 | 0,218 | 0,281 | |||
| PMW 1250 | 1,250 | 1,625 | 0,218 | 0,281 | |||
| PMW 1500 | 1,500 | 1,875 | 0,218 | 0,281 | |||
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