Here’s some pics of a Caterpillar 16M & 18M Grader Axle Spindle Housing. The bores are worn beyond the OE specs so machining & welding is required to bring them back to spec. We first set up the spindle housing on our Rottler cnc boring mill & machine the bores oversize until they are perfectly true & round. We then setup the bore welder & weld the bores back to a smaller size than the OE spec. We then set the spindle housing up again so we can bore, or machine the welded bores back to the proper size.
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