Serving the UK & IE plastics industry

Optimum Screw RPM Calculator

Please fill out the boxes below & click the calculate button


The results below show your lower, upper & optimum revs per minute (rpm) for your material & screw diameter.

Lower speed 0
Optimum speed 0
Maximum speed 0

Need to purchase a new screw and barrel? Visit our Injection Moulding Screw & Barrel section to get a comparative quote from the leading suppliers.

Calculator Disclaimer

Polybridge Training has kindly provided this calculator for the exclusive use of PlastikCity users.

The calculator is provided “as is” and without any representation or warranty of any kind, including that it is fit for any purpose or of merchantable quality or functions as intended or at all. Your use of the calculator is entirely at your own risk, and neither PlastikCity nor Polybridge Training accepts liability of any kind.

Polybridge Training, a UK company, has a worldwide reputation for delivering injection moulding training and technical support. They provide scheduled and customer-specific training courses in the UK, Ireland, Europe and Asia. Scheduled courses take place in the UK, covering process-related product & mould design issues. Email Dave Jeavons at to discuss your training requirements.

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