How to Choose the Right Oil for Variable-Speed Gearboxes
A gearbox failure rarely comes at a good time. One week a delivery van is slipping in and out of gear, the next a piece of construction equipment refuses to shift smoothly under load. When the gearbox is opened up, the damage often points back to the same cause: the wrong oil. It is easy to assume that any gear oil with the right grade on the label will do the job, but variable-speed gearboxes are far less forgiving than many expect. The oil inside them is not just a lubricant; it is a working component that keeps the system responsive, cool, and protected. Choosing wisely can mean years of reliable service. Choosing poorly can mean costly downtime.
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