Custom hydraulic cylinders are manufactured according to customer-provided drawings; the more complete the preliminary documentation, the more accurate the quotation and lead time. Below is Liqiang Hydraulic’s recommended documentation checklist.
1. Mounting and Connection Dimensions
Include mounting configurations at the cylinder head and rod end (e.g., clevis, flange, trunnion, threaded), mounting hole spacing, and pin diameter. An assembly drawing or clear photo of the actual part—annotated with critical dimensions—is ideal.
2. Bore Diameter, Rod Diameter, and Stroke
Bore and rod diameters determine push/pull force; stroke determines overall cylinder length. If speed requirements exist, also provide pump flow rate or actuation time.
3. Pressure Rating
Specify rated working pressure and test pressure. For heavy-duty or continuous-operation applications, consider increasing safety margin.
4. Operating Environment
Temperature, dust, moisture, and corrosive media affect seal selection and surface treatment. For high-temperature applications, specify maximum temperature; for outdoor use, corrosion resistance must be considered.
5. Port Connections and Additional Requirements
Specify port thread type, port orientation, cushioning requirement, displacement sensing, paint color, etc.—all must be clearly indicated in drawings or technical specifications.
If complete drawings are unavailable, existing parts, samples, or equipment photos may be provided for reverse engineering and solution confirmation. Quotations available upon receipt of drawings or samples.