K501 is a two piece double acting piston seal consisting of a thermoplastic sealing element and one energizer elastomer ring.
ADVANTAGES
• Excellent sealing performance under static and dynamic applications
• Simple groove design
• Easy fit without installation tool
• Superior sealing performance at high and variable pressure levels
• Longer service life due to high abrasion resistance
• Excellent sealing at high surface roughness
• Outstanding resistance to pressure shocks APPLICATION
Heavy duty cylinders and construction machinery. |
| | NBR | 70 SHORE A | NB7001 | | PA | | PA9904 |
|
| OPERATING CONDITIONS | | MEDIA | Mineral oils (DIN 51524) | HFA and HFB | HFC | | TEMPERATURE | -30°C and +105°C | +5°C and +60°C | -30°C and +60°C | | PRESSURE | <=500 Bar | <=500 Bar | <=500 Bar | | SPEED | <=1 m/sec | <=1 m/sec | <=1 m/sec | | Note: The above data are maximum values and cannot be used at the same time. |
|
| SURFACE ROUGHNESS | Ra | Rmax |
| Sliding Surface ?d | <=0.4 ?m | <=4.0?m |
| Groove Base ?D | <=1.6 ?m | <=6.3?m |
| Groove Flanks S1 | <=3.2 ?m | <=16 ?m |
| Note: It is recommended to have 50% to 90% of the working surface material contact area value. |
INSTALLATION
Easy installation into one-piece piston head. Sealing elements must be pre-lubed with system oil before installation. NOTES
It is recommended to use with minimum two piston guide rings in long-stroke cylinders , minimum one guide ring in short stroke and under low radial loads. |
| PERMISSIBLE SEALING GAP |
| B (mm) | Smax ( mm ) |
| 4.2 | 0.35 |
| 6.3 | 0.50 |
| 8 | 0.60 |
| Note:All the above mentioned “S” values are maximum and it’s vital to use lower values for system security. |
