Injection Moulding Machine for Industrial Fittings
Push-in pneumatic fittings, quick couplers and hose fitting bodies are moulded on horizontal injection moulding machines in POM, PA66, glass-filled PA66 or PBT. Cavity count and threaded ends set mould design, since moulded threads need unscrewing cores. Even wall thickness matters most, because thin spots and rough bores raise stress and start cracks near the pressure limit.
For fitting bodies, machine selection is about steady shots across many cavities and a mould that can run unscrewing cores and side actions. Pratishna Engineers provides horizontal injection moulding machines for industrial fitting makers and can point you to a suitable model.
Moulding Pneumatic or Hose Fittings?
Share the fitting drawing, port sizes, thread type, material and volume, and Pratishna Engineers will recommend a machine.
Machine Requirements for Industrial Fitting Moulding
A fitting body holds pressure and seals on an O-ring, so wall uniformity and groove size come first. Machine points to check:
- Uniform wall thickness around ports and bores
- O-ring groove size held tight shot to shot
- Unscrewing core drive for moulded threads
- Concentric threads and bores across all cavities
- Drying of PA66 and PBT before moulding
- Polished core pins for smooth internal flow paths
Recommended Machine for Industrial Fittings
Push-in fittings and small couplers are compact parts, and multi-cavity moulds for them mostly fit the E Series (75-180 T), with room for unscrewing core drives. The H Series (120-350 T) suits larger hose fitting bodies, glass-filled jobs and high-cavity tools whose projected area and mould width go beyond the E Series.
Not Sure Which Machine You Need?
Send your fitting drawing and cavity plan for a matched machine.
Why Choose Pratishna Engineers?
- Application-Based Machine Selection
- In-House Engineering & Manufacturing
- Multiple Machine Series
- Production-Focused Solutions
- End-to-End Technical Support
- Industry-Specific Solutions
- Machine Lifecycle Support
Injection Moulding Machine Buyer Resources
Download practical resources to help you select, size and specify the right machine.
Horizontal Injection Moulding Machine Selection Guide
A step-by-step guide covering the key inputs needed to select the right machine: product weight, projected area, number of cavities, plastic material, required clamping force, shot / injection capacity, mould dimensions, production quantity, cycle time and automation requirement.
Download PDFPDF · 265 KB
How to Calculate Clamping Force for an Injection Moulding Machine
A clear methodology that explains how clamping force is calculated, covering projected area, injection pressure, safety factor, number of cavities and material considerations.
Download PDFPDF · 363 KBEngineering Components & Machine Guide
A guide to Engineering components, covering gears, bushings, rollers, bearings, brackets, pneumatic fittings, sprockets and precision mechanical parts. It explains POM, nylon and filled grades, shrinkage, tolerance control, and how to match each part to a suitable machine.
Download PDFPDF · 206 KB
FAQs / Buyer Questions
Questions fitting makers often raise about machines and moulds.
Which Injection Moulding Machine Is Used to Make Industrial Fittings?
A horizontal machine that can drive the core pulls and unscrewing cores in the mould. E Series machines cover most push-in fitting and coupler moulds, and the H Series takes larger hose bodies and high-cavity tools.How Are Threads Moulded on Fitting Bodies?
Internal threads are formed on an unscrewing core that turns out of the part before ejection, and external threads can be formed by split slides. Both need tight concentricity so the thread runs true with the port and seal faces.Which Parts of a Push-In Fitting Are Moulded?
The body and the release sleeve are usually moulded. The gripping ring and any thread insert are metal parts, and the O-ring is a separate rubber seal, all assembled after moulding.
What Causes Cracks Near the Pressure Limit?
Uneven wall thickness, rough internal surfaces and weld lines next to ports all raise local stress. Cracks start there under repeated pressure, so the mould keeps walls even and bores polished, with the gate away from the most stressed area.Can Pratishna Recommend a Machine for My Industrial Fitting?
Yes. Share the fitting drawing or sample, material, thread and port details, part weight, mould dimensions, number of cavities and yearly quantity, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Fluid Handling Parts Too?
Yes. It can also mould valve bodies and manifold components, impeller and pump rotor parts, plain bushings and snap-fit fasteners, depending on the mould.
Technical Disclaimer
Disclaimer: The information provided in this webpage is for general informational and educational purposes only. It is based on technical references and industry information available at the time of preparation and may be subject to change. It does not constitute engineering, technical, commercial or professional advice, nor does it constitute a quotation, specification, warranty or contractual commitment by Pratishna Engineers.
Actual injection moulding machine and process requirements vary according to the component design, material, mould, production volume, machine configuration and operating conditions. The information, examples, calculations and recommendations provided should be independently evaluated and verified for the specific application before making any equipment, process or production decision. Information obtained from third-party sources remains subject to the accuracy and limitations of those sources.
Limitation of Liability: Pratishna Engineers makes no representation or warranty, express or implied, regarding the completeness, accuracy or suitability of the information for any particular application. To the extent permitted by applicable law, Pratishna Engineers shall not be liable for any loss, damage, cost or consequence arising from reliance on or use of the information contained in this webpage. Final machine selection, configuration and application suitability should be confirmed with Pratishna Engineers based on complete and accurate project requirements.
Talk to Our Engineers
Planning a New Injection Moulding Project?
Share your component, material, mould and production target. Our engineering team will help you identify the right machine configuration.
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