What to Check When Purchasing a Pneumatic Cylinder

As the actuator in a pneumatic system, cylinder quality directly impacts equipment performance. Consider the following when selecting:

1. Choose manufacturers with strong reputation, proven quality, and reliable service.

2. Verify the production standard—compare enterprise standards against industry norms if applicable.

3. Inspect appearance, leakage, and no-load performance:

  A. Appearance: Barrel and rod must be scratch-free; end caps free of porosity or sand holes.

  B. Leakage: No external leakage except at rod seal. Internal and rod-end external leakage must each be < (3 + 0.15D) mL/min (D = bore in mm).

  C. No-Load Test: Run cylinder unloaded at low speed; the lower the minimum speed without crawling, the better.