Selection engineering
The combined limits trap in gearbox sourcing
Why a maximum ratio and a maximum torque are not a matched operating point—and what to request instead.
Architecture comparison
Planetary vs worm gearbox: compare the machine, not just the ratio
Shaft layout, duty, efficiency and holding requirements lead to better choices than a generic ranking.
Precision motion
Planetary gearbox backlash: what ≤3 arcmin means for a servo axis
Read the units, test conditions and axis error budget before treating a backlash figure as a positioning guarantee.
Manufacturing evidence
How to verify gear heat treatment before placing a gearbox order
A hardness number is only one part of the evidence. Match the material, process, case depth and inspection record to the supplied gear.
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