Mining Machines and Equipment should maintained  periodically for several reasons, including:

Increased reliability: Regular maintenance helps ensure that machines are operating at their optimal level of performance. This reduces the risk of unexpected downtime, which can be costly in terms of lost productivity and revenue.

Longer lifespan: Proper maintenance can help extend the lifespan of machines, which can be a significant cost savings for businesses that rely on expensive equipment.

Improved safety: Regular maintenance can help identify and address safety issues before they become serious problems. This helps ensure that machines are operating safely for workers and other users.

Lower operating costs: Preventative maintenance can help identify and address small problems before they become larger, more expensive problems to fix. This can result in lower operating costs over the long term.

Regulatory compliance: Many industries have regulations around machine maintenance to ensure safety and compliance with environmental standards. Regular maintenance helps ensure that machines are operating in compliance with these regulations.

Overall, regular maintenance of machines is an important aspect of ensuring their reliability, safety, and lifespan, as well as complying with regulatory requirements and reducing operating costs.