tailieunhanh - Handbook Of Shaft Alignment Episode 1 Part 9

Tham khảo tài liệu 'handbook of shaft alignment episode 1 part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 210 Shaft Alignment Handbook Third Edition FIGURE Cleaning the pump feet using 180 grit emery cloth wrapped around a 1 8 in. thick steel bar and sawing back and forth to clean the underside of the machine foot and the base plate at the same time. FIGURE The underside of this motor foot is hollow. Make sure for using the right size shims to get as much contact as possible here. Preliminary Alignment Checks 211 FIGURE Soft foot correction shim stack. 6. Once all of the bolts have been loosened review what you observed when each bolt was loosened. If more than 2-3 mils of movement occurred when just one of the bolts was loosened then there is probably a soft foot condition at that foot only. Remove any soft foot shims under that foot and remeasure four points around that bolt-hole FIGURE Soft foot correction shims for a motor. FIGURE Soft foot correction shims stack. 212 Shaft Alignment Handbook Third Edition with feeler gauges and install a flat shim or shim wedge to correct the observed condition. If more than 2-3 mils of movement were noticed when several of the bolts were loosened then there is probably a soft foot condition at each one of those feet. Remove any soft foot shims under those feet and remeasure four points around those bolt-holes with feeler gauges and install flat shims or shim wedges to correct the observed condition. 7. Repeat the procedure if additional corrections are required. Shaft Movement Method Third Choice 1. Tighten all of the foot bolts holding the machine in place. 2. Attach a bracket to one shaft place a dial indicator on the topside of the other shaft and zero the indicator at mid-range. 3. Sequentially loosen one-foot bolt at a time observing for any movement at the indicator when each bolt is loosened. 4. If there were more than 2-3 mils of movement when only one of the bolts were loosened then there is probably a soft foot condition at that foot only. Remove any soft foot shims under that foot and .

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