MR Mixers

Reliability, Performance & Value

The MR model is the latest addition to Chemineer’s line of high performance and reliable agitators. The MR agitator’s gearbox is a proprietary, parallel-shaft, helical gear design that features minimum 30,000 hour L10 bearing life and an oversized output shaft for optimal performance and extended service life. Shaft speed selections are available from 7 to 380 rpm without the use of auxiliary reducers or electronic drives. When the MR gearbox is expertly matched with a wide variety of Chemineer impellers and other system components, MR agitators are capable of economically meeting your blending, dispersion, and other mixing needs.

Gearbox Designed for Agitator Duty

Commercially available gearboxes for agitators in this size range normally have low-speed output shafts and bearing designs that are poorly suited to agitator duty. Commercial gearboxes typically use smaller diameter output shafts, resulting in the need to select larger and more expensive units to handle the torsional loads and bending moments produced by the hydraulic loads on agitator systems. These smaller output shafts and less robust bearing designs of commercial gearboxes also contribute to higher gear deflections, excessive vibration, higher maintenance costs, and a reduced life of many critical agitator system components. The MR gearbox addresses these concerns by incorporating a larger output shaft straightened to exact tolerances and high capacity tapered roller bearings into its design. The rugged cast iron housing of the MR gearbox features a double lip seal to effectively contain the gearbox lubricant as well as a swing out seal change design that saves maintenance labor and reduces downtime. These design features reduce the overall initial cost of the gearbox and other agitation system components and reduce the maintenance costs of the agitator.

Versatile Modular Design

The modular design of MR agitators makes them well-suited for a variety of mixing applications. MR agitators are designed to meet AGMA, OSHA, ANSI, IEC, DIN, EU and ATEX standards and requirements. They may be supplied with integral gearmotors, standard NEMA and IEC motors or explosion-proof motors. A variety of stuffing boxes or mechanical seals and many Chemineer custom pedestals, couplings, impellers, shafts, and steady bearings can be incorporated into the MR design as well. This product can be mounted to support beams or similar structures for open tank operation or to pedestals, plates or flanges for closed tank operation. The MR agitator and all of its system components are included in the Chemineer Expert Design System (CEDS®), the industry leading agitator design and analysis software program. CEDS® helps insure that MR components are selected and configured for optimal system performance and value.

Global Availability

To support the global manufacturing footprint of our customers, MR agitators are available in all major global markets with the same Chemineer assurance of reliability, performance and value. MR agitator gearboxes, mountings and system components are also interchangeable with the Chemineer Model 20 HT and GT agitators enabling customers to readily adapt or upgrade their agitator drives and system components to changes in application requirements or operating environments.

With all of its versatility, MR agitators can become your global process system standard helping drive efficiencies in procurement and reduce maintenance costs and replacement part investment.

Impeller Technology

Chemineer’s impeller process technology is effectively applied across your spectrum of applications ensuring successful, repeatable results from lab scale to full scale operations. Chemineer’s 50+ years of mixing expertise includes low shear liquid-liquid/solids blending, gas dispersion, high shear blending and viscous mixing. Whether it is R&D or production phase, Chemineer has the experience, products and services to solve your mixing challenges. An impeller brochure, B710, is available with additional information.

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