Paper or plastic? For Emerson Bearing, a Boston-based bearing company catering to OEM and MRO markets throughout the world, the answer is both. The company recently launched a new division to supply bearings and related products to the plastics industry, and last year launched a paper converting, pulp and printing division.
“We’re extremely excited about expanding our efforts in this area,” said Steve Katz, president of Emerson Bearing, Inc. Katz explains the plastic industry is dominated by two major categories: extruders and injection molding machines. Both areas depend greatly on the reliability and durability of their bearings.
“We’ve had great results with some existing clients in the plastics industry. With this new division, with dedicated marketing and customer service staff for this industry, we will be better equipped to serve current clients and attract new plastics industry clients,” said Katz.
To date, Emerson Bearing has worked several plastic manufacturers. That includes a company in North Carolina that produces plastic wine corks, a manufacturer that produce plastic bags (including bio degradable plastic bags), and a manufacturer that produces plastic strapping.
In an extruder, the processed plastic is pressed through a nozzle into a profiled die. The extruder gearbox is subject to high torques as well as high radial and axial loads. This places major importance on the monitoring of bearings and replacement in a timely fashion.
Injection molding machines are used for the production of parts in large quantities. The screw feed and the linear bearings must be insensitive to heat and vibration and have high basic static and dynamic load ratings. Again, regular monitoring, maintenance and replacement of bearings are critical to keeping production schedules.