Piston sealing set Prädifa series ZP | Product Series

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Piston sealing set Prädifa series ZP Piston sealing set Prädifa series ZP Piston sealing set Prädifa series ZP

Piston sealing set Prädifa series ZP

Piston sealing set for hydraulic cylinders, double-acting. Three-piece design.
For high pressures and extreme pressure peaks. Robust design with extreme wear resistance.

Especificações técnicas

  • Temperatura máxima de operação: 100 °C
  • Diâmetro interno: 95 to 275 mm
  • Diâmetro externo: 110 to 300 mm
  • Mídia: Hydraulic
  • Opções de materiais de polímeros: Nitrile Butadiene Rubber (NBR, XNBR)
  • Pressão máxima de operação: 500 bar
  • Temperatura mínima de operação: -20 °C
  • Velocidade máxima de superfície: 0.1 m/sec
  • Unidade de medida: Length: mm
  • Mecanismo de amortecimento: No
  • Tipo de aplicação térmica: Standard Moderate Temperature (-35 to 100°C)
  • Classificação de pressão: Extremely High Pressure (> 500 bar)

Descrição completa do produto

The double-acting piston sealing set ZP consists of a rubber-fabric seal with back-up rings on both sides to prevent extrusion. The dynamic surface of the seal on the outer diameter is reinforced with a special dimensionally stable fabric. This supports the development of a lubricating film between the seal and the cylinder wall, even after long standstill periods and under high pressure. This grease deposit reduces breakaway friction and dynamic friction and thus wear of the dynamic surface of the seal. The surface structure ensures wear resistance, even in low-lube conditions. The ZP sealing set is extremely robust, even in harshest conditions such as particle contamination in the system.

• Exceptionally high static and dynamic sealing performance.
• Enhanced sealing performance in non-pressurized conditions.
• Can also be used for single-acting applications.
• Robust seal profile for harshest operating conditions.
• Insensitive to contamination of the operating medium or slight damage of the sliding surfaces compared with single-part seals.
• Good wear resistance.
• Long service life thanks to application-optimized compounds.
• Constantly low dynamic friction throughout the part's service life.
• Insensitive to extreme pressure peaks.
• Improved lubrication due to pressure medium deposit in the dynamic contact area.
• Extremely high extrusion resistance.
• Simple fabrication of the housing.
• Installation in open housings.

Range of application:
Mainly used for double-acting pistons in cylinders for hydraulic roof supports and for tunneling machines.

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Produtos Diâmetro externo (mm) Diâmetro interno (mm) Altura do elemento (mm) Largura do sulco Temperatura mínima de trabalho (C) Temperatura máxima de trabalho (C) Material de vedação
ZP010900250 110 95 16 16 -20 100 Z5017
ZP012000250 120 105 16 16 -20 100 Z5017
ZP012500250 125 110 15.8 15.8 -20 100 Z5017
ZP013100250 130 115 16 16 -20 100 Z5017
ZP014000250 140 125 16 16 -20 100 Z5017
ZP014900250 150 133 20 20 -20 100 Z5017
ZP015000250 150 135 16 16 -20 100 Z5017
ZP016000250 160 145 16 16 -20 100 Z5017
ZP016500250 165 150 16 16 -20 100 Z5017
ZP018000250 180 160 18 18 -20 100 Z5017
ZP018100250 180 163 20 20 -20 100 Z5017
ZP019000250 190 170 16 16 -20 100 Z5017
ZP020000250 200 180 16 16 -20 100 Z5017
ZP021000250 210 190 16 16 -20 100 Z5017
ZP021900250 220 195 22 22 -20 100 Z5017
ZP022100250 220 200 20 20 -20 100 Z5017
ZP023000250 230 210 16 16 -20 100 Z5017
ZP026000250 260 235 25 25 -20 100 Z5017
ZP027000250 270 245 24 24.000 -20 100 Z5017
ZP028000250 280 255 25 25 -20 100 Z5017
ZP030000250 300 275 25 25 -20 100 Z5017

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