1. Preparation before replacing the pellet machine oil seal
1. Turn off the pellet machine power supply and the valve of the exhauster;
2. Raise the pellet machine equipment, keep it stable and support it firmly to remove and install the new oil seal;
3. Prepare the new oil seal, micrometer, height gauge, sliding guide, hammer, cutting pliers, screwdriver, wrench and other tools to be replaced.
2. Remove the old oil seal
1. Remove the shaft where the oil seal is located, and place it on the support with a sliding guide;
2. Cut the old oil seal with cutting pliers or a screwdriver, and remove it with a hammer and a wrench;
3. Clean the shaft surface and inner hole where the oil seal is located, and measure it with a micrometer and height gauge to ensure that the size of the sliding guide and the new oil seal is accurate.
| Model | Capacity | Power | Dimension | Weight |
| 125 | 80-100kg/h | 3kw | 110*35*70 cm | 95 kg |
| 150 | 120-150kg/h | 4kw | 115*35*80cm | 100 kg |
| 210 | 200-300kg/h | 7.5kw | 115*45*95cm | 300 kg |
| 260 | 500-600kg/h | 15kw | 138*46*100cm | 350 kg |
| 300 | 700-800kg/h | 22kw | 130*53*105cm | 600 kg |
| 360 | 900-1000kg/h | 22kw | 160*67*150cm | 800 kg |
| 400 | 1200-1500kg/h | 30kw | 160*68*145cm | 1200 kg |
3. Install the new oil seal
1. Apply a fine layer of lubricating oil to the shaft surface and inner hole to prevent wear and burns on the new oil seal and shaft surface;
2. Install the new oil seal in the correct direction, making sure it fits tightly against the shaft surface without signs of rotation or misalignment;
3. Gently tap the new oil seal with a hammer until it fits perfectly with the shaft surface. Be careful not to over-hit the new oil seal to avoid damaging its structure;
4. Reinstall the shaft into the pellet machine equipment and check in reverse whether all disassembled parts and pipes are properly connected.
4. Tips to avoid damaging the new oil seal
1. Install all parts strictly in accordance with the specified tightening torque;
2. Use washers (such as concentric circles with the same outer diameter) to protect the new oil seal from dust, sand and other impurities;
3. Reserve a period of time before operation. Under normal load, slowly rotate the shaft to pad the new oil seal, and check for any oil leakage or oil seepage, which needs to be readjusted.