Injection Moulding Machine for Knobs, Handwheels, Levers and Handles
Knobs, handwheels, levers and handles are made on horizontal injection moulding machines from glass-filled PA6, ABS, PP or POM, often with moulded-in metal threaded inserts. Machine size follows part diameter, cavity count and shot weight. On the show face, sink is the main risk: a solid boss beneath it sinks, so thick sections are cored and ribbed.
Machine choice for these parts turns on insert handling, cosmetic finish and the loading time inserts add to each cycle. Pratishna Engineers supplies horizontal injection moulding machines for knob and handle moulding and can recommend a configuration for your part, inserts and output.
Moulding Knobs and Handwheels?
Share your part drawing, material, insert details and volume, and Pratishna Engineers will recommend a suitable injection moulding machine.
Machine Requirements for Knob and Handle Moulding
Knobs and handles need a clean show face over a structural core, and many carry metal inserts. Main points for the machine and process:
- Cored and ribbed sections to keep sink off the show face
- Insert loading time allowed for brass or steel threaded inserts
- Gate location that keeps vestige away from the grip face
- Drying for glass-filled PA6 and ABS before moulding
- Weld line control in handwheel rims between spokes
- Mould temperature control for gloss or texture on ABS
Recommended Machine for Knobs, Handwheels, Levers and Handles
Small control knobs and levers are compact parts that fit the E Series (75-180 T), often in multi-cavity moulds. Large handwheels, long handles and moulds with side cores for undercuts need more platen space and clamping force, so the C Series (140-320 T) is the usual next step, with the H Series (120-350 T) for the largest moulds.
Not Sure Which Machine You Need?
Send your knob or handle drawing and insert details 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 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 buyers ask most when setting up knob, lever and handle moulding.
Which Injection Moulding Machine Is Used to Make Knobs and Handwheels?
A horizontal machine sized to the part and mould. Control knobs and small levers usually suit the E Series, while large handwheels and long handles, especially with side cores, need the C or H Series.Are Threaded Inserts Moulded In or Pressed In?
Both methods are used. Moulded-in brass or steel inserts give strong pull-out but add loading time to every cycle. Pressing inserts in after moulding keeps the cycle short, with a moulded hole sized for the insert.How Is Sink Avoided on a Knob Show Face?
Avoid thick solid sections behind the visible face. Core out the boss, add ribs of even thickness for strength, and hold pressure long enough to pack the part. A textured face also helps hide small surface marks.
Can Black Phenolic Handwheels Be Injection Moulded?
Traditional black phenolic handwheels and handles are thermoset parts, usually compression moulded, so they are quoted separately. A thermoplastic version in glass-filled PA6 or POM can be injection moulded on the listed series.Can Pratishna Recommend a Machine for My Knob or Handle?
Yes. Share the part drawing or sample, material, insert type, part weight, mould dimensions, number of cavities and production quantity, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Engineering Hardware Too?
Yes. Machines in this class also mould plastic brackets, snap-fit clips and spacers, castor wheels and precision mechanical parts, depending on the mould and material.
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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