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Positive Displacement System

When precision is non-negotiable, the Volumetric Positive Displacement Centralized Lubrication System (PDI) delivers. Unlike resistive systems that rely on continuous pressure, PDI systems operate on a pressure-and-relief cycle. Each volumetric distributor stores a highly precise, pre-measured volume of oil and discharges it to the lubrication point only when the main line pressure drops. This guarantees that every point receives the exact amount of lubricant, regardless of distance or temperature variations.

Key Advantages & Benefits:

  • Absolute Accuracy: Delivers precise, pre-determined volumes of lubricant, unaffected by oil viscosity or pipe length.
  • System Reliability: The pressure-relief cycle ensures that all injectors reset properly before the next lubrication event.
  • Independent Operation: A blockage at one lubrication point does not affect the output of the other injectors in the system.
  • Easy Expansion: Adding new lubrication points is straightforward and does not disrupt the balance of the existing system.

Versatile Applications:

  • High-Speed CNC Machine Tools
  • Semiconductor Manufacturing Equipment
  • Medical Device Manufacturing
  • Automated Assembly Lines

Frequently Asked Questions (FAQ):

  • Q: How does the system ensure the exact volume is delivered? A: Each PDI distributor contains a tiny internal piston. When the pump pressurizes the line, the piston is pushed, discharging the oil stored in the chamber. The chamber volume dictates the exact output.
  • Q: Why does the pump need a pressure relief function? A: The pressure relief allows the springs inside the PDI injectors to push the pistons back to their starting position, drawing in a fresh charge of oil for the next cycle.

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FAQ

What aluminum alloys do you use to make motorcycle engine cases?

We mainly use high-performance aluminum alloys such as ADC12 and A356. The ADC12 is ideal for complex shapes such as side covers due to its excellent flow properties, while the A356 is the first choice for structural parts such as crankboxes that require excellent strength and elongation. We use a spectrometer to confirm the composition of each melt to ensure material stability.

How to ensure the tightness of the engine cover and prevent oil leaks?

Preventing leaks is the core standard we ensure. We control internal density through precise high or low pressure casting parameters. After casting, we perform precision CNC machining on the sealing surfaces and perform pneumatic leak tests on the oil passages and water passages to ensure zero leaks in the assembly.

How long is the delivery lead time for OEM motorcycle engine covers

For new OEM projects, the lead time from mold design to T1 sample delivery is typically 35-50 days. Once samples are approved, our capacity of 5000 tons per year allows us to adjust mass production plans to meet your specific delivery deadlines

What surface polishing options do you provide for motorcycle engine case covers?

Our process includes Shot Blasting and vibration deburring to achieve a clean, matte appearance. At the same time, we can also prepare powder coated or painted surfaces based on the aesthetic requirements of your brand.

Application Background and Use Scenario

Heat Pipe R&D and Sample Preparation


Heat pipe development requires stable and repeatable sample-level processing before entering mass production. During R&D stages, engineers need precise control over heating, degassing, and welding preparation to verify product structure and process feasibility. This equipment is designed to support such sample preparation tasks under controlled conditions.


Process Validation Before Mass Manufacturing


Before scaling up to full production lines, manufacturers often need to confirm welding parameters, heating lengths, and degassing performance. This machine provides a practical platform for process validation, helping reduce risks during later mass production deployment.


Integrated Heating and Degassing Process


The heating process is controlled by both temperature and time, allowing operators to set parameters according to different pipe diameters and material requirements. This helps maintain consistent thermal conditions during sample processing.