AI-ST WIPER SEAL
The profile of the HUNGER AI-ST wiper with step profile prevents ingress of dust, dirt, metal particles, sand grains and other contaminants from entering the cylinder.
It is built into the front of the cylinder to protect the seal and bearing system.
The AI-ST is easily snapped into a simple installation groove and can be used with all mineral oils.
| Materials | |||
| Wiper Ring | |||
| Standard | NBR or TPE | ||
| Alternative (on request) | FKM, PTFE-Compounds, Engineering Plastics | ||
| Application Range | |||
| Pressure [bar] | Temperature Range [°C] | Sliding Speed [m/s] | |
| TPE / NBR | – | -30 … +100 | 1 |
| Design Hints Surface Finish | |||
| Surface Quality | Surface Hardness | ||
| Ra [µm] | Rt [µm] | [HRC] | |
| Sliding Surfaces | 0.1 – 0.3 | ≤ 1.5 | > 40 |
| Groove Base | 0.8 | ≤ 6.3 | |
| Groove Sides | 3.2 | ≤ 15 | |
SIZE
| d | D | b | a | n | D | e | Ref. Number |
| 20 | 28 | 7 | 4 | 1 | 26 | 6 | 71342 |
| 22 | 30 | 7 | 4 | 1 | 28 | 6 | 37456 |
| 25 | 33 | 7 | 4 | 1 | 31 | 6 | 72499 |
| 28 | 36 | 7 | 4 | 1 | 34 | 6 | 38253 |
| 32 | 40 | 7 | 4 | 1 | 38 | 6 | 38184 |
| 36 | 44 | 7 | 4 | 1 | 42 | 6 | 76155 |
| 38 | 46 | 7 | 4 | 1 | 44 | 6 | 39671 |
| 40 | 48 | 7 | 4 | 1 | 46 | 6 | 70070 |
| 44 | 52 | 7 | 4 | 1 | 50 | 6 | 79001 |
| 45 | 57 | 10 | 5,5 | 1,5 | 54 | 6 | 79003 |
| 45 | 53 | 7 | 4 | 1 | 51 | 6 | 76156 |
| 46 | 54 | 7 | 4 | 1 | 52 | 6 | 79004 |
| 47 | 55 | 7 | 4 | 1 | 53 | 6 | 74024 |
| 48 | 56 | 7 | 4 | 1 | 54 | 6 | 74026 |
| 50 | 58 | 7 | 4 | 1 | 56 | 6 | 70973 |
| 51 | 59 | 7 | 4 | 1 | 57 | 6 | 79008 |
| 52 | 60 | 7 | 4 | 1 | 58 | 6 | 79009 |
| 53 | 61 | 7 | 4 | 1 | 59 | 6 | 79010 |
| 54 | 62 | 7 | 4 | 1 | 60 | 6 | 79011 |
| 55 | 63 | 7 | 4 | 1 | 61 | 6 | 76157 |