SlewPro Gear
Leadership Team


Richard Potesta, President & COO

Richard Potesta

Richard founded SlewPro and leads all facets of business development and operations. Richard has over 30 years of experience leading groups that design and manufacture precision-engineered products. He founded SlewPro to serve the needs of equipment designers, manufacturers and rebuilders who have been underserved by the traditional suppliers. Quality, responsiveness and the ability to customize to specific needs drive Richard and your team at SlewPro. Prior to founding SlewPro, Richard was President of Storetek Engineering, an industrial automation and engineering firm in Northeast Ohio.

Richard lives in Stow, Ohio. He has been blessed with four children. He enjoys cooking and fine wines. Recently he began baking bread. He enjoys walks and hikes with his fiancé Kim. Richard is active in his church and serves in a number of areas.


Jim Mazzella, CEO

Jim Mazzella

Jim has a passion for serving customers and providing them with extraordinary value. Jim has more than 28 years of hands-on business experience leading closely held and venture-backed manufacturing and distribution businesses in Cleveland and Cincinnati—including Mazzella Lifting Technologies and Five Star Technologies. Jim is an active investor, strategist and advisor for several high-growth businesses in Northeast Ohio. In addition, Jim Chairs a private CEO advisory board for Vistage International.

Jim lives in Westlake, Ohio with his lovely wife and four children. He enjoys hiking, canoeing, fishing and other types of wilderness adventures. Jim serves on the Boards of Catholic Charities of Cleveland, Arisdyne Systems, and Public Insight Corporation.



Our slewing bearings range from small, single-row to large, triple-roller bearings.

View Slewing Rings


Small- to mid-sized OEMs trust Rhino Gear to meet both custom and standard gear orders.

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Our slewing drives cross over all major brands and come in a range of design options

View Slewing Drives


SlimPro thin section bearings are designed to solve the most demanding bearing challenges.

View thin section bearings
SlewPro Gear

Case Study: SlewPro Partnership Saves Time & Money

When Wolf Robotics needed a quick turnaround on a new slewing bearing for a special project in 2017, SlewPro was the only company able to meet the time and specification requirements. The project met all requirements and was on budget, earning more trust from Wolf Robotics’ engineering team.

Download Case Study