Used Haitian Injection Machine Inspection Checklist Before Purchase
Buying a used Haitian injection machine can be a practical way to add molding capacity, reduce equipment investment, or shorten delivery time. But before confirming a second hand machine, buyers should check more than the model name and price.
A machine that looks suitable on paper may still create problems if the screw barrel is worn, the controller is unstable, the hydraulic system leaks, or the mold cannot fit the platen. This checklist helps buyers prepare the right inspection questions before purchasing a used Haitian injection molding machine.
1. Confirm The Machine Model And Specification Plate
Start by confirming the machine identity. Ask for clear photos of the machine nameplate, controller screen, and full machine body.
Check:
- Haitian model and series
- Machine year
- Clamping force
- Screw diameter
- Shot weight
- Tie-bar distance
- Platen size
- Mold thickness range
- Machine dimensions and weight
The model number alone is not enough. Two used Haitian machines with similar tonnage can have different screw sizes, controller versions, and actual condition.
2. Ask For A Power-On And Test-Running Video
A power-on video is one of the most useful checks for remote buyers. It helps confirm that the machine can start, respond to operation, and run basic movement.
The video should show:
- Controller screen after power-on
- Manual operation response
- Mold opening and closing movement
- Ejector movement
- Injection unit movement
- Pump or servo system running
- Any abnormal noise or alarm
If possible, ask for a video that shows the machine running under realistic operation instead of only a short startup clip.
3. Check Controller Condition
The controller affects daily operation, parameter setting, and troubleshooting. For export buyers, language support and display condition also matter.
Check:
- Controller brand/version
- Screen clarity
- Button or touchscreen response
- Language options
- Alarm history if available
- Whether the controller powers on normally
A working controller does not guarantee the full machine condition, but controller issues can delay installation and production.
4. Inspect Screw Barrel And Injection Unit
The screw barrel is critical for product quality and injection stability. Wear can cause unstable plasticizing, poor product weight control, and production defects.
Ask for:
- Photos of the injection unit
- Screw barrel condition if inspection is available
- Heating band condition
- Nozzle and injection carriage condition
- Plasticizing test if possible
For buyers using specific materials, confirm whether the machine's screw configuration is suitable.
5. Check Hydraulic Leakage And Pump Condition
Hydraulic leakage can indicate worn seals, hose issues, or poor maintenance. It can also create shipping and installation problems.
Review:
- Oil pump condition
- Valve block area
- Hydraulic hoses
- Oil tank area
- Visible oil leakage under the machine
- Running noise during operation
For servo machines, also check the servo motor and drive condition where possible.
6. Inspect Platen, Tie Bars, And Clamping Unit
The clamping unit must match the buyer's mold and remain mechanically stable.
Check:
- Tie-bar surface condition
- Platen surface condition
- Tie-bar distance
- Mold mounting area
- Clamping movement
- Lubrication condition
- Any visible cracks, deformation, or abnormal wear
Buyers should compare the platen and tie-bar distance with the actual mold size before confirming the machine.
7. Review Electrical Cabinet And Wiring
The electrical cabinet can show how well the machine has been maintained.
Ask for photos of:
- Electrical cabinet interior
- Wiring condition
- Inverter or servo drive
- Main electrical components
- Cooling fan and dust condition
- Safety switches
Messy wiring or missing components should be treated carefully, especially for export buyers who may not have immediate local support.
8. Confirm Machine Fit For Your Mold
Before discussing final price, confirm whether the machine fits the buyer's actual mold and product.
Prepare:
- Product photo
- Mold size
- Mold thickness
- Product weight
- Plastic material
- Required output
- Existing machine tonnage, if replacing a machine
A supplier can give better recommendations when these details are available. Without mold information, the risk of choosing the wrong used injection molding machine is much higher.
9. Ask For Loading And Export Photos
For international buyers, loading preparation is part of the purchase risk.
Ask about:
- Machine dimensions and weight
- Whether disassembly is needed
- Container loading plan
- Packing method
- Photos before loading
- Photos during loading
- Documents for export
Large machines require careful loading. Good photos and clear communication reduce risk before shipment.
10. Red Flags Before Purchase
Be careful if:
- The seller cannot provide a test-running video
- Machine plate photos are unclear
- The price is unusually low without explanation
- There are no clear photos of the controller or electrical cabinet
- Hydraulic leakage is visible
- Machine condition details are vague
- The supplier does not ask about your mold or product
A used Haitian machine can be a good investment, but only when the condition and application fit are checked properly.
FAQ
Is a used Haitian injection machine reliable?
It can be reliable if the machine condition is verified and the machine matches the buyer's mold. Inspection photos, videos, and specification checks are important before purchase.
What video should I request before buying?
Ask for a power-on video, controller video, mold opening/closing movement, ejector movement, injection unit movement, and running sound. A longer test-running video is better than a short startup clip.
What information should I send for a quotation?
Send product photo, mold size, mold thickness, product weight, plastic material, required output, destination country, and preferred machine tonnage.
Should I choose the cheapest used Haitian machine?
Not always. A lower price can become expensive if the machine needs repairs, does not fit the mold, or cannot run stable production.
Request Inspection And Quotation Support
If you are looking for a used Haitian injection machine, send your product details, mold size, required tonnage, material, and destination country. Geerpower can help compare available used Haitian machines, check key specifications, and provide practical quotation support.
Internal Link Suggestions
Add links from this article to:
- Main used Haitian buyer guide: /blog/haitian-used-injection-machine-what-buyers-should-check-first
- Second hand plastic injection molding machine guide: /blog/second-hand-plastic-injection-molding-machine-what-buyers-should-check
- Relevant used Haitian product/category page, exact URL to confirm
- Contact/inquiry page, exact URL to confirm
