Engineering blog
Technical articles for shrink disc selection, shaft fit review, tightening sequence and maintenance planning.
2026-09-07
After a linear actuator failure, repair cost depends on coupling torque specs and bearing types. See why a RINGFEDER coupling beat an unspecified budget replacement when linear bearings and radial ball bearings are both in the load path.
Read note2026-09-04
Need to use a Ringfeder torque chart for a servo motor or brushless DC motor application? Here is a no-nonsense checklist for sizing locking assemblies and couplings fast.
Read note2026-09-04
How to read a Ringfeder torque chart without repeating my $7,200 mistake. Includes gear coupling service factors, high-torque servo motor peak torque, and a practical selection checklist.
Read note2026-09-03
A maintenance parts buyer's post-mortem of a packaging line failure that started with a linear actuator fault and ended with a RINGFEDER coupling replacement. It explains why ringfeder torque specs and total cost thinking matter.
Read note2026-09-03
Linear actuators fail for different reasons. Whether you are using an Arduino servo motor, an industrial servo, or a heavy-duty Ringfeder coupling, here’s how to diagnose the failure and find the right fix—before you place a rush order.
Read note2026-09-02
A quality inspector explains why shaft fit matters more than torque rating for a Ringfeder coupling, with practical notes for small buyers and related components such as v belt pulleys and linear bearings.
Read note2026-09-02
A practical Ringfeder coupling FAQ covering VFD definitions, disc brake vs torque limiter, spherical roller bearings, torque charts, and the 'Edward Cole Ringfeder Power Transmission' name.
Read note2026-08-31
A practical comparison of Ringfeder locking assemblies and traditional keyed connections from a quality manager's perspective across 14 years in power transmission.
Read note2026-08-31
A purchasing perspective on why servo motors and V-belt drives fail. VFD stands for variable frequency drive, but the real fault is often the mechanical connection—and Ringfeder locking assemblies are the fix.
Read note2026-08-31
A maintenance team lead shares hard-earned lessons from 9 years of specifying Ringfeder locking assemblies and couplings: how to read a Ringfeder torque chart without getting burned, why roller bearing applications trip people up, and when “timing belt car” or “what's a stepper motor” searches are (and aren't) relevant.
Read note