/sci/ - Science & Math

Working on a method for assessing the condition of the bearings on this spillway gate.
Given [math]µ=0.20[/math] as friction coefficient for the GE140 bearings, it sums out to roughly 16624 Nm of static friction. We assume static friction since it is slow (20 minutes to open). Now compare that to the water load, which is about 815100 Nm.
The friction is about 2 % of the load the hydraulic cylinder has to work against when closing the gate.

For clarification: you're looking at the downstream side of the gate. It pivots about the axis around the arrows. The hydraulic cylinder is in reality coupled to the leftmost end of the axle with an arm.