Auburn, ME

Northeast RBC Specialists,     a division of

Serving Clients,

Serving the Community

About Us


About Us


Northeast RBC is a division of Mountain Machine Works (MMW) which was established in 1982 by its founder and President, Bruce R. Tisdale.  MMW's early beginnings as a small job/machine shop evolved into a modern full service enterprise.  MMW is considered as one of Maine’s premier shops by offering our clients engineering, design, welding, fabrication, custom machining, contract manufacturing, as well as our specialty of on-site/in-place machining.  With decades of experience and long term focus on Rotating Biological Contactor Services, we have a dedicated RBC division Northeast RBC Specialists.  MMW continues to serve our customers by offering to two exciting product lines.  Xpandrel® Precision Expanding Mandrels & IronMaster On-Site Rebar Bending and Shearing.


Mountain Machine Works in the Community


MMW is active with several organizations.  We are strong Chamber of Commerce Member, Members of the Manufacturers Association of Maine (MAMe),  as well as outstanding supporters of the Maine Community Colleges in which the President of MMW serves as a Board Member for CMCC.  MMW is an active members of the United Way as well as continually showing support to our local School systems and Adult Education Programs. We strongly believe in education and try to support all of the above organizations that do their part in educating and supporting people at many different levels.


To Our Customers


We would like to thank our business partners in helping us grow through the years and we look forward to establishing new business relationships in the future.


Mountain Machine Works guarantees our workmanship and will always stand behind the work of our employees. We provide our customers with fair and competitive pricing for the goods and services we offer.  We will always conduct business in a respectful and positive manner. We will provide our employees a safe, empowering and health conscious environment. Our objective is to obtain repeat business through quality work, informative sales and estimating/quoting staff and innovative technologies and engineering.


Home Maintenance & On-Site Services New RBC Assemblies Shaft Repair & Replacement RBC Media & Supports Bearings & Load Cells About Us Contact Us
NERBC-Home NERBC-Contact Us NERBC-About Us Terms of Use Privacy Statement