Injection Moulding Machine for Caster Wheels and Swivel Housings
Furniture caster wheels are made on horizontal injection moulding machines, with soft-tread wheels needing a two-shot machine that overmoulds TPR or TPU onto a PA6, PP or POM hub. Projected area, cavity count and the shot weight of each material decide machine size. Thick tread sections are cooling-limited and sink easily, so tread thickness sets the cycle.
Two-shot caster selection centres on the bond between hub and tread and on balancing two shots in one cycle. Pratishna Engineers builds special purpose injection moulding machines to application for two-shot wheels and supplies horizontal machines for single-material wheels and housings.
Manufacturing Furniture Caster Wheels?
Share the wheel size, hub and tread materials and output, and Pratishna Engineers will recommend a machine.
Machine Requirements for Caster Wheel Moulding
A furniture caster has to roll quietly and carry weight, so the machine should support:
- Two-shot TPR or TPU tread bonded to the hub
- Hub and tread grades chosen for peel strength
- Coring and cooling for thick tread sections against sink
- Concentric axle bore so the wheel runs true
- Tread compound that resists flat-spotting under standing load
- Stiff PA6 swivel housing moulded as a separate part
Recommended Machine for Caster Wheels
Soft-tread wheels moulded in one cycle need a special purpose injection moulding machine built to application by Pratishna Engineers. Single-material wheels and swivel housings suit the E Series (75-180 T) for small chair castors, the C Series (140-320 T) for mid-size wheels and the H Series (120-350 T) for larger wheels or multi-cavity housing tools.
Not Sure Which Machine You Need?
Share your caster wheel and housing design for a machine suggestion.
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.
Special Purpose Injection Moulding Machine Selection Guide
A step-by-step guide covering the key inputs needed to specify a machine built to application: component and process, 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 KBFurniture & Hardware Components & Machine Guide
A guide to Furniture & Hardware components, covering chairs, stools, tables, drawers, storage, hinges, drawer channels, knobs, castors and fittings. It explains large-part moulding, mould height, POM and nylon hardware, and how to match each part to a suitable machine.
Download PDFPDF · 203 KB
FAQs / Buyer Questions
Questions furniture caster makers ask before choosing a machine.
Which Injection Moulding Machine Is Used to Make Caster Wheels?
That depends on how the wheel is built. A one-material wheel runs on a standard horizontal machine, while a hub with a bonded soft tread needs a two-shot special purpose machine built to application.How Is the Bond Between Hub and Tread Checked?
The bond is proven by a peel test on moulded wheels, not assumed from a datasheet. Hub and tread grades must be compatible, and hub surface temperature at overmoulding affects how well they bond.Why Do Caster Wheels Flat-Spot?
A wheel left standing under load can take a permanent flat if the tread compound creeps. Choose a tread grade with low compression set and keep the tread section even so it cools without voids.
Is the Caster Fork or Axle Moulded Too?
No. Steel forks, axles and bearings are bought in and assembled. Plastic swivel housings can be moulded in PA6 or PP on a standard horizontal machine as a separate part from the wheel.Can Pratishna Recommend a Machine for My Caster Wheel?
Yes. Share the wheel and housing drawings or samples, hub and tread materials, wheel diameter, part weights, mould dimensions and volume, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Wheel and Furniture Parts Too?
Standard machines in this range also mould trolley wheels, furniture legs and levelling glides, pipe end caps and drawer channel rollers, 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?
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