Stainless steel keeps motors hygienic
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Marlin Stainless product story
Edited by the Engineeringtalk editorial team
Mar 23, 2006
For industries that make heavy demands on hygienic, easy-to-clean designs, motor and gearbox packages are free from potential contamination hazards, such as flaking paint and rusty surfaces.
A complete stainless-steel bodied motor and gearbox package is available from Marlin Stainless.
It is for industries that make heavy demands on hygienic, easy-to-clean designs that are free from potential contamination hazards, such as flaking paint and rusty surfaces.
The worm gearboxes have smooth, acid-resistant stainless-steel bodies and hollow shafts with life lubricated gears.
They are available with centre distances of 31, 42 and 61mm with ratios from 5:1 to 75:1.
Torques range from 0.9 to 208Nm and options include gears with torque pins, food spec lubricants and various output shaft designs.
Other adaptations are available on request.
This worm gearbox and IP66 rated Marlin AC three-phase IEC all stainless-steel electric motor package is for OEMs and end-users as retro-fit replacements, offering compatible metric dimensions to standard alternatives.
The corrosion resistance and hygienic characteristics of the motor are improved by its smooth exterior, having no cooling fins or nameplates (data is etched into motor body) to harbour germs and dirt.
An NTN blue double lip seal and a Gamma seal fitted on the shaft guard against any risk of ingress to the motor.
For internal protection against moisture, and compatibility with inverter control, the motor stator windings are double vacuum and pressure impregnated and phases are insulated.
To overcome the inherent condensation problem associated with electric motors exposed to internal and external temperature differences, the Marlin motors have four quadrant drain ports in each end shield that will accept T drain plugs on removal of grub screws.
This ensures that there will always be a drain plug at the lowest point of the motor.
They are offered in power ratings from 0.18 to 7.5kW in metric frame sizes up to 132 as TEFC machines.
Smaller units up to 0.75kW are also available from 63 frame size as TENV machines.
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