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Should screws be re-torqued as part of drive maintenance? - A Galco TV Tech Tip | Galco

410 views · Published 5 March 2018 · 2:21 · Indexed 27 October 2026

Channel: GalcoTV · 2018 · Science & Technology

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Do you typically re-torque screws as part of your drive’s preventative maintenance procedures? It turns out that you may be doing more harm than good. Unless you see an obvious indication that you should re-torque a screw, it is generally not a good idea to do so regularly, as further tightening an already tight connection may ruin the connection entirely. Screws have a maximum clamping power at a torque value specific to its size, shape, and composition. Exceeding that torque value can permanently reduce the clamping power of that screw by reducing its elasticity and deforming it. Loosening and then re-torquing a screw can also reduce its elasticity, which will reduce its clamping power. 
While it may seem like a minor thing, damaging your screws can lead to catastrophic effects. They can eventually lead to damaging or completely ruining your connection, and bad connections can eventually lead to arcing. 

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Galco is a Factory Authorized Stocking Distributor for Over 200 Brands of Industrial Electrical & Electronic Automation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands;  Engineered Systems Integration, Retrofits & Upgrades for Variable Speed Drives, CNC, PLC Systems, Dynamometers & Test Stand Applications. Visit us online at http:// www.galco.com or call us at 800-337-1720.

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With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of:  i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended,  and all laws, rules and regulations implemented in relation thereto;  ii)  the National  Electric Code®;  and  iii) NFPA 70E®.  Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
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