Injection Moulding Machine for Cable Glands and Strain Reliefs
Cable glands, strain reliefs and small luminaire fixture accessories are produced on horizontal injection moulding machines in PA6, PA66 or PP, usually in multi-cavity moulds. Machine size depends on cavity count, thread size and how the threads are released. A seal that keeps its grip through repeated heating and cooling is the main concern.
For gland work, machine selection centres on repeatable shot control across many cavities and steady unscrewing or core movements. Pratishna Engineers supplies horizontal injection moulding machines for cable gland moulding and can recommend a configuration for your gland range.
Manufacturing Cable Glands?
Share your gland sizes, thread type, material and volume, and Pratishna Engineers will recommend a suitable machine.
Machine Requirements for Cable Gland Moulding
A gland carries the ingress rating of the fitting at the cable entry, so small dimensional changes matter. Points to check when selecting a machine:
- Repeatable threads and clamping fingers across every cavity
- Unscrewing or collapsible cores for internal threads
- Drying and moisture conditioning for PA6 and PA66
- Heat-aged and UV-stabilised grades for outdoor luminaires
- Hot runner balance for high-cavity tools
- Seal element fitted or moulded on, settled before tooling
Recommended Machine for Cable Glands and Strain Reliefs
Glands and strain reliefs are small parts, so most moulds suit the E Series (75-180 T), sized to cavity count and the unscrewing drive. High-cavity hot runner tools, family moulds for a full gland set, or larger gland sizes may need the H Series (120-350 T).
Not Sure Which Machine You Need?
Share your gland range and cavity plan for a recommendation.
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 KBLighting & Electrical Components & Machine Guide
A guide to Lighting & Electrical components, covering CFL holders, tube light fixtures, potting boxes, diffusers, downlight housings, street light parts and cable glands. It explains PC and PMMA optics, heat-resistant and flame-retardant grades, and how to match each part to a suitable machine.
Download PDFPDF · 202 KB
FAQs / Buyer Questions
What gland and luminaire accessory makers ask most often.
Which Injection Moulding Machine Is Used to Make Cable Glands?
E Series machines suit most gland and strain relief moulds. The H Series comes in for very high cavity counts, family tools that mould body and cap nut together, or larger cable entry sizes.Why Do Glands Lose Their Seal in Service?
A gland can seal well on assembly and then relax after repeated heating and cooling in the fitting. Seal material, clamping finger design and nylon moisture content all affect this, so test glands after thermal cycling, not only when new.Can the TPE Seal Be Moulded onto the Gland Body?
The seal can be fitted as a separate part on standard machines. Moulding TPE onto the nylon body needs a two-material machine built to application, so settle the route before the mould is designed.
Why Do Freshly Moulded Nylon Glands Crack?
Dry-as-moulded PA6 and PA66 are brittle until they take up moisture, so clamping fingers can crack on first assembly. Conditioning after moulding, correct drying before moulding and keeping weld lines off the finger roots reduce cracking.Can Pratishna Recommend a Machine for My Cable Gland?
Yes. Share the gland drawings or samples, thread sizes, material grade, part weights, mould size, cavity count and monthly volume, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Lighting Accessory Parts Too?
Yes. Similar machines can mould CFL holder bodies, LED potting boxes, downlight trims and street light gear trays, subject to each 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.
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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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