MVSS Stainless Steel Series

by Italvibras

The MVSS stainless steel series vibrators are characterized by their total protection from liquids, dusts, aggressive agents and contaminants, thanks to the AISI 304 stainless steel casing and external components.  Line MVSS-P is available for potentially explosive dust atmospheres in confomity with ATEX Directive 94/9/EC.

Category:  ll 2 D

Level of protection:  IP66


EC certificate:  LCIE 03 ATEX 6005 X

Zones of use:  21, 22

Technical features

Power supply

Three-phase voltage from 24V to 690V, 50Hz or 60Hz or single-phase 100-130V 60Hz and 200-240V, 50Hz;  suitable for use with an inverter from 20Hz to the base frequency with constant torque load profile.


2, 4, 6, and 8 poles.

Conformity with European Directives

Low voltage 2006/95/EC.

Reference Regulations

EN 60034-1.


Continual service (S1) at maximum declared centrifugal force and electric power.  Intermittent services are also possible depending on the type of vibrator and the operating conditions.  For detailed information, contact our office.

Centrifugal force

Range extended up to 4300 Kgf. (42.4 KN), with centrifugal force adjustable from 0 to 100%.

Mechanical protection

IP66 according to IEC 529, EN 60529.

Insulation class

Class F (155°C), class H (180°C) on request.


Standard on all vibrators, with vacuum encapsulation up to size 35, with "drop by drop" trickle system for larger sizes.

Ambient temperature

From -20°C to +40°C.  Versions for higher or lower temperatures are available on request.

Vibrator thermal protection

Standard PTC rated thermistor heat detectors 130°C (DIN 44081-44082) on size 70, on request for smaller sizes.  On request, thermistors with different temperatures and anti-condensation heaters.

Fixing of the vibrator

In all positions and therefore without restriction


All vibrators are lubricated in the factory and do not require further lubrication if used in normal operating conditions ("FOR LIFE" lubrication).  In heavy duty operating conditions periodical re-lubrication may be applied to size 35 and larger. 

Terminal Box 

Large fixed electrical connections, with terminal board cover in stainless steel AISI 304.  Special shaped terminals allow to fix the power supply cable, protecting it from loosening.

Electric Motor

Three-phase and single-phas asynchronous type.  Designed for maximum starting torques and torques curves specific to vibrating machines.  Insulated windings using vacuum encapsulating up to size 35; using the "drop by drop" trickle system with class H resin for larger sizes.  The rotor is die cast aluminium.


In stainless steel AISI 304, with especially studied design to reduce deposits of dusts and liquids.

Bearing flange

Constructed in cast iron (spheroidal or grey) or in aluminium with steel bearing seat.  The geometry of the flange transmits the load to the casing uniformly.


The lower and upper bearings have been studied to support the relative load and therefore they have a particular geometry, especially designed and made for Italvibras.

Motor shaft

In treated steel alloy (Isothermic hardening) resistant to stress.

Eccentric weights

Allow continual adjustment of the centrifugal force.  This adjustment is realized by a graduated scale, which expresses the centrifugal force as a percentage of the maximum centrifugal force.  A patented system (patent N°MO98A000194), called ARS, prevents adjustment errors.

Weight covers

In stainless steel AISI 304 with thickness measuring 1.2 to 1.5mm, to unite mechanical resistance to the guaranteed protection of stainless steel.

Surface treatment

Electro polishing of the surface to obtain a smooth, bright, uniform surface.

External screws

In stainless steel AISI 304.

Other features

Identification plate in AISI 316L stainless steel.

Please contact our office for the available Certifications, 1-888-558-9956