The manufacturing process of a jack involves multiple steps and process requirements. The following is the basic process for manufacturing a jack:
Material Preparation: High-strength steel is selected as the main material to ensure its compressive strength and durability. Alloy steel or carbon steel is typically used, and the thickness needs to be determined according to the design load.
Machining Parts:
Hydraulic Cylinder: The inner wall is machined on a lathe to ensure smoothness and precision. The inner diameter tolerance is controlled within ±0.02mm.
Piston Rod: The surface needs to be chrome-plated to improve wear resistance; a hardness of HRC60 or higher is recommended.
Base and Top Cover: Stamping or casting processes are used, with a thickness of no less than 10mm to withstand high loads.
Assembly:
The piston rod is installed in conjunction with the hydraulic cylinder. Oil-resistant rubber seals are required to ensure no leakage.
The hydraulic pump and valve system are installed. The pressure valve needs to be adjusted to the rated working pressure (usually 50-70MPa). Test the sealing and stability of the hydraulic system, and conduct load tests (overload testing is recommended at 1.5 times the rated load).
Surface Treatment: Apply anti-rust paint or perform electroplating to extend service life.
Quality Inspection: Ensure product compliance with industry standards (such as ISO 12100) through pressure testing, durability testing, and safety checks.
This design can stably lift 2-3 ton vehicles in automotive repair and adjust the position of equipment weighing tens of tons in the construction industry. It boasts three major advantages: high load-bearing capacity (5-50 tons per unit), good stability (hydraulic system error < 2%), and convenient operation (can be performed by a single person).
Note that the operating environment requires a ground flatness deviation of < 3°, and the hydraulic system sealing needs regular maintenance (hydraulic oil replacement is recommended every 500 hours).
Produces lifting screws made of 42CrMo alloy steel using a quenching process (hardness HRC45-50). They offer a full range of customized jack solutions from 1 ton to 100 tons, and their technicians can provide on-site installation and commissioning guidance.
