A lot of well-known enterprises rely on power transmission technology from planetroll®. No matter what kind of industry – the innovative technology and absolute reliability of our products convince and inspire. Therefore, planetroll® are now a leading provider of explosion-proof, variable-speed drives according to ATEX 95. And there’s more: our products meet the ever stricter requirements in the hygiene sector and are available in silicone-free versions.

plaromaster® MR: The leading variable-speed gearbox – not only regarding explosion protection.


The plaromaster® MR are the world’s leading variable-speed gearboxes in the explosion-proof area according to ATEX 95. They use the principle of elasto-hydrodynamic power transmission and are infinitely adjustable from and to zero speed, even with the highest starting or breakaway torques. They can be operated manually by means of a hand wheel. Due to the characteristics of the system, they cannot slip through – complex and costly ATEX external monitoring is not necessary.


Key Features

• Highest output torque from zero speed
• Variable-speed gearbox cannot slip through
• The ATEX variable-speed drive is cost effective for explosion-proof zones 1 and 21, as combination with an “explosion-proof” motor is sufficient. A motor with flameproof enclosure not necessary
• Expensive and complex external ATEX control for zones 1 and 21 is not necessary
• Design conforms to GMP, FDA and USDA-H1 standards
• Can also be supplied as silicone-free drive unit
• Applicable for low temperatures (special execution)
• Torque-proportional power transmission results in high service life and reliability. No friction at all inside gearbox, torque transmission thanks to the “elastohydrodynamic effect”.

Product overview

• Available in seven sizes: MRV, MR1, MR3, MR5, MR7, MR9, MR11
• Power range: 0.027 up to 11 kW
• Long service life
• Conform to ATEX for zones 1 and 21 according to Directive 2014/34/EU (ATEX 95)
• Expensive and complex external ATEX control for zones 1 and 21 not necessary
• Zero speed variable-speed gearbox, i.e. n2= 0 with n1 = motor speed
• Highest starting and break-away torques can be realized
• Design conform to GMP, FDA and USDA-H1
• Silicone-free execution available
• Applicable for low-temperature ranges
• Precise speed-setting – exactly reproducible
• Linear setting characteristic
• No slippage of variable-speed gearbox transmission parts
• Mechanical and electrical control elements
• Low-noise and low-vibration running
• Speed setting on variable-speed gearbox is possible at rest
• In- and output shaft are coaxial and have the same direction of rotation
• Anti-clockwise as well as clockwise running of variable-speed gearbox is possible
• Internal and external speed limitation can be realized
• Configured for all mounting positions
• With reduction gearboxes up to 50,000 Nm output torque

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Key Features

• Special tilting mechanism of the agitating element enables an insertion through IBC openings and maximum agitation during operation
• Gentle product agitating based on large agitation area and low speed range
• Complete mixing of total container contents by developing agitating patterns including awkward container corners
• planetroll® container agitators CRW, including variable-speed gearboxes plaromaster® MR in explosion-proof execution, are applicable in the ATEX zones 0 (zero), 1 and 2 inside as well as 1 and 2 outside the container

Properties

• All product contact material is stainless steel
• Agitating elements completely dismountable for cleaning without using any tools
• FDA-compliant sealing between agitating element and agitating shaft possible

Special Technology

• Speed-variable drive units for adjusting the best agitating result, as well as speed setting with specific viscosity
• Easy and trouble-free handling by attachment to all established IBC containers
• Mounting in stainless steel with holes or alternatively with handles
• Optional lifting devices

For the technical data of the available ATEX and non-ATEX executions, please see the product datasheet.

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Key Features

• Equipped with a speed sensor, therefore applicable to ATEX zone 1 and 2
• Simple, quick cleaning
• Operation is almost maintenance-free
• Overload protection
• Total separation of stirrer drive unit from the product
• Possibility of low-shear stirring
• Space-saving due to mounting on container bottom
• No strain on the container cover
• Mixing from residual quantities
• Easily removable drive unit

Special technology

• Completely contact-free rotation of the stirring element by magnetic fields.
• No rotating drive shaft through the container wall means a seal between the drive shaft and the container wall is not required.
• The contact-free engagement enables the application of 1-75 Nm of torque.
• The system is suitable for CIP and SIP due to its execution in compliance with GMP and the FDA.
• The off-centre stirrer assembly means that baffles are unnecessary.
• With their baffle-free execution, magnetic stirrers are successfully used for homogenizing volumes of up to 40 m3.
• The mixing head can be adjusted to individual tasks so that various geometries are available, including impellers, propellers, and disk stirrers.
• The magnetic stirrer can be equipped with an optional speed sensor. It prevents the torque of the magnet coupling from being exceeded.

Industries

• Because of its low-shear agitation and trouble-free cleaning and sterilization, the planetroll® magnetic stirrer MRW is popular in sensitive fields, including high-tech areas like biotechnology and digester construction.
• The magnetic stirrer system represents the state of the art in pharmaceuticals as well as cosmetics.
• Bottom magnetic stirrers are also increasingly being used in the luxury and general food industries as well as in fine chemistry.

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