Rotary oil cylinder has the advantages of large output torque, strong carrying capacity, compact structure and smooth operation. Torque output, structural connection, bearing "ALL IN ONE". The inspection of the rotating oil cylinder mainly includes the following contents: 1. Surface acceptance: Check whether there are obvious cracks or collision marks on the surface of the oil cylinder, whether there is a protective seal plate at each oil port, and whether the wire teeth of the oil port are damaged, and then tighten the fastening bolts. 在空负载工况下全行程往复动作5次以上，油缸输出轴动作是否平稳，可见密封是否有破损。 2. Test run: The tested oil cylinder reciprocates more than 5 times in full stroke under no-load conditions. Whether the output shaft of the oil cylinder moves smoothly and whether the seal is damaged. 3. Minimum starting pressure: Under no-load conditions, the hydraulic port of the cylinder is filled with hydraulic oil, and the relief valve is gradually increased from zero. Observe the pressure gauge and record the minimum starting pressure of the cylinder under test at startup. 4. Torque experiment: Add the load of the cylinder output shaft to the rated load and observe whether the output angle of the cylinder can reach the rated angle. 5. Pressure resistance test: The output shaft of the cylinder under test is rotated to the two ends of the stroke. The overflow pressure is adjusted to 30 MPa, and the pressure is maintained for 10 minutes, and the leakage of each part is checked. 6. Full stroke inspection: The output shaft of the cylinder under test is rotated and stayed at both ends of the stroke. Measure whether the total rotation angle is within the standard range. 7. Leakage test: Rotate the oil cylinder to one end, loosen the oil pipe corresponding to the oil outlet, hold it for 1 hour, and observe whether there is leakage; use the same method to detect the leakage on the other side. 8. Fatigue experiment: Install the oil cylinder according to customer application, and load the output shaft of the swing oil cylinder.
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