* Expects spin-off to be completed by Q2 2018
* Dover to record $60 mln-$65 mln in restructuring costs (Adds background, details about the spin off, shares)
Dec 7 (Reuters) - Dover Corp said on Thursday it plans to spin off its upstream energy businesses into a new publicly traded company, nearly two months after activist investor Daniel Loeb urged the industrial equipment maker to separate its energy business.
Loeb's hedge fund Third Point, which bought a stake in Dover during the third quarter, said in October that the company's shares underperformed the industrial peer group due to a significant earnings decline in its energy business.
Third Point owned 1.06 percent of Dover's outstanding shares as of Sept. 30, according to Thomson Reuters data.
The upstream energy businesses, collectively called Wellsite, make oil and gas production equipment and diamond cutters used in oil and gas exploration.
The company's energy business has struggled as exploration companies scale back projects amid a slide in global oil prices.
Wellsite is expected to generate about $1 billion in annual revenue and earnings before interest, taxes, depreciation and amortization of about $250 million on a pro-forma basis in 2017.
The spin off will be tax-free to Dover shareholders and allow Dover to focus on growing its other three businesses - engineered systems, fluid management, and refrigeration and food equipment.
The three businesses make products including precision marking and coding equipment used for fast-moving consumer goods, pumps and compressors used for fluids transfer, and kitchen ventilation systems and beverage can-making machinery.
Wellsite is expected to raise $700 million to $800 million of debt, which will be paid to Dover in the form of a dividend.
Dover said it expects share repurchases of $1 billion in 2018, including the use of cash from the Wellsite dividend.
Sivasankaran Somasundaram, chief executive of the Dover Energy segment, will head Wellsite upon completion of the spin off by the second quarter of 2018.
Dover said it expects to record $60 million to $65 million in restructuring costs, mainly in the fourth quarter. The costs include headcount reductions and facility closures.
Dover said in September it was exploring strategic alternatives, including a sale, for its upstream energy unit, and in the next month the company had estimated restructuring costs of $40 million to $45 million.
The restructuring actions are expected to result in benefits of about $50 million in 2018, the company said, up from $40 million estimated earlier.
Up to Thursday's close, Dover's shares had risen 29 percent this year, compared with a 32.1 percent increase in the Dow Jones U.S. Industrial Engineering index. (Reporting by Ankit Ajmera in Bengaluru; Editing by Maju Samuel)