| KASTAS DOUBLE WIPER SEAL K27 |
| PRODUCT ADVANTAGES |
| K27 is a single acting double wiper ensuring that foreign particles do not penetrate into the hydraulic cylinders. The lip is designed in a particular way that it reliably wipes off the dirt but leaves a residual oil film on the rod. |
| APPLICATION |
| Construction machinery, fork-lift trucks, injection moulding machines, agricultural machinery and standard cylinders. |
| MATERIAL | CODE | |
| NBR | 90 SHORE A | NB9001 |
| PU | 92 SHORE A | PU9201 |
| OPERATING CONDITIONS | |||
| NBR | |||
| MEDIA | Mineral oils (DIN 51524) | HFA and HFB | HFC |
| TEMPERATURE | -30°C +105°C | -5°C +60°C | -30°C +60°C |
| SPEED | ≤1.0 m/sec | ≤1.0 m/sec | ≤1.0 m/sec |
| NBR | |||
| MEDIA | Mineral oils (DIN 51524) | HFA and HFB | HFC |
| TEMPERATURE | -30°C +100°C | +5°C +50°C | -30°C +40°C |
| SPEED | ≤1.0 m/sec | ≤1.0 m/sec | ≤1.0 m/sec |
Note: The above data are maximum values and cannot be used at the same time.
| SURFACE ROUGHNESS | Ra | Rmax | |
| Sliding Surface | Ød | ≤0.4 μm | ≤3.2 μm |
| Groove Base | ØD | ≤1.6 μm | ≤10 μm |
| Groove Flanks | S1 | ≤3 μm | ≤16 μm |
INSTALLATION
Generally, wiper can be easily ftted into the closed housing by deforming into a kidney shape. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the wiper must be oiled with system oil.
NOTES
K27 double wiper should be used in combination of suitable rod seals to avoid hydrodynamic pressure or pressure relieving bore between seal and wiper should be constructed to prevent the build up pressures (See section; Hydraulic Sealing Elements – Sample Designs). K27 wipers can be produced on request in FKM for special applications that require high temperatures.
| KASTAS NO | d (f8) | D (H10) | D1 (H11) | S1 (-0/+0.2) | S2 | b | r2 |
| K27-016 | 16.00 | 22.00 | 19.00 | 3.80 | 5.80 | 5.5 | 0.5 |
| K27-020 | 20.00 | 28.60 | 23.00 | 5.30 | 7.30 | 7 | 1 |
| K27-025 | 25.00 | 33.60 | 28.00 | 5.30 | 7.30 | 7 | 1 |
| K27-028 | 28.00 | 36.60 | 31.00 | 5.30 | 7.30 | 7 | 1 |
| K27-030 | 30.00 | 38.60 | 33.00 | 5.30 | 7.30 | 7 | 1 |
| K27-035 | 35.00 | 43.60 | 38.00 | 5.30 | 7.30 | 7 | 1 |
| K27-036 | 36.00 | 44.60 | 39.00 | 5.30 | 7.30 | 7 | 1 |
| K27-040 | 40.00 | 48.60 | 43.00 | 5.30 | 7.30 | 7 | 1 |
| K27-045 | 45.00 | 55.60 | 48.00 | 5.30 | 7.30 | 7 | 1 |
| K27-050 | 50.00 | 60.60 | 53.00 | 5.30 | 7.30 | 7 | 1 |
| K27-050/2 | 50.00 | 58.60 | 53.00 | 5.30 | 7.30 | 7 | 1 |
| K27-055 | 55.00 | 65.60 | 58.00 | 5.30 | 7.30 | 7 | 1 |
| K27-060 | 60.00 | 70.60 | 63.00 | 5.30 | 7.30 | 7 | 1 |
| K27-063 | 63.00 | 71.60 | 66.00 | 5.30 | 7.30 | 7 | 1 |
| K27-063/1 | 63.00 | 73.60 | 66.00 | 5.30 | 7.30 | 7 | 1 |
| K27-065 | 65.00 | 75.60 | 68.00 | 5.30 | 7.30 | 7 | 1 |
| K27-070 | 70.00 | 80.60 | 73.00 | 5.30 | 7.30 | 7 | 1 |
| K27-075 | 75.00 | 87.20 | 81.00 | 7.10 | 9.10 | 12 | 1 |
| K27-080 | 80.00 | 92.20 | 86.00 | 7.10 | 9.10 | 12 | 1 |
| K27-085 | 85.00 | 97.20 | 91.00 | 7.10 | 9.10 | 12 | 1 |
| K27-090 | 90.00 | 102.20 | 96.00 | 7.10 | 9.10 | 12 | 1 |
| K27-095 | 95.00 | 107.20 | 101.00 | 7.10 | 9.10 | 12 | 1 |
| K27-115 | 115.00 | 127.20 | 121.00 | 7.10 | 9.10 | 12 | 1 |
| K27-125 | 125.00 | 140.20 | 110.00 | 7.60 | 9.60 | 9.5 | 1 |
| K27-135 | 135.00 | 147.20 | 141.00 | 7.10 | 9.10 | 12 | 1 |
| K27-155 | 155.00 | 167.20 | 161.00 | 7.10 | 9.10 | 12 | 1 |
| K27-160 | 160.00 | 172.20 | 166.00 | 7.10 | 9.10 | 12 | 1 |
| K27-185 | 185.00 | 197.20 | 191.00 | 7.10 | 9.10 | 12 | 1 |
| K27-215 | 215.00 | 227.20 | 221.00 | 7.10 | 9.10 | 12 | 1 |
| K27-240 | 240.00 | 255.20 | 247.00 | 7.10 | 9.10 | 12 | 1 |
| K27-280 | 280.00 | 305.00 | 292.00 | 15.80 | 17.80 | 22.5 | 1 |