The linear motion shale shaker is the first piece of equipment in solids control system. Two vibrating motors turn in opposite directions, making the screen box move in a straight line. That motion throws the mud forward and back. Large cuttings get to the discharge end and fall off. The drilling fluid goes through the shaker screen and down into the tank for the next stage.
How we build it: we cut the steel plates with CNC machine, weld the box on jig, and check the critical welds with ultrasonic testing. After welding, the whole box goes into a furnace to relieve stress. Then we machine the motor mounting surfaces and screen rails in one setup on a large mill. The screen box is sandblasted to Sa2.5 and painted with epoxy zinc primer plus topcoat. Dry film thickness is at least 200 microns. Last step is assembling the vibratory motors, spring supports, and screens, then running it on a test stand for no‑load and simulated load tests before shipping.