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2.0 - TECHNICAL INFORMATION
2.1 - GEAR UNIT DESCRIPTION
The gear unit has been designed and constructed for integration, if required, driven by an electric motor, into
an assembly of interlocking parts or mechanisms as part of a specific application.
Depending on the requirements of the application, the gear unit can be supplied in a variety of executions
and configurations. It is capable of satisfying a range of specific requirements in the mechanical, chemical,
agricultural and food industries, etc.
BONFIGLIOLI RIDUTTORI supplies a range of accessories and optionals to make their products as versatile
as possible. For further technical information and descriptions, refer to the Sales Catalogue.
The User is responsible for using the products recommended for installation and maintenance of
BONFIGLIOLI gear units in an appropriate manner and in accordance with instructions.
SAFETY SPECIFICATIONS FOR ATEX SPECIFIED GEAR UNITS
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use of synthetic lubricants only (oil and grease)
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VITON
®
seal rings
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thread locker on all external bolts
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vent caps with anti-intrusion valve
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double oil seals on series C gear units, and oil seals with dust traps on all other types
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components and products operable at above the maximum rated operating temperature
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no metal moving parts external to the gear unit
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no plastic parts capable of building up electrostatic charge
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irreversible temperature indicator supplied along with each unit
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for installations in zones 21 and 22 the User must schedule and implement a regular cleaning
programme of all surfaces and recesses to avoid a build up of dust of more than 5 mm in depth
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to prevent dust build-ups in difficult to access areas, the units are equipped with a variety of se
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als in proximity to the couplings of moving parts, mounting flanges and external threaded holes.
2.2 - CONFORMITY TO STANDARDS
All gear units or gearmotors (when supplied complete with electric motor) are designed in compliance with
the provisions of all applicable Essential Health and Safety Requirements, “Machinery Directive” 98/37/EC
and, if requested, can be supplied complete with Manufacturer’s Declaration – Annex IIB as provided by said
directive.
The electric motors of all BONFIGLIOLI RIDUTTORI gearmotors conform to the provisions of Low Voltage
Directive 73/23/EEC and Electromagnetic Compatibility Directive 89/336/EEC.
Furthermore, if specified for use in potentially explosive atmospheres, the gear units are desi
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gned and constructed to conform with the Essential Health and Safety Requirements (EHSR) of
Annex II of ATEX Directive 94/9/EC and conform to the following classification:
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Equipment group: II.
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Calass: Gas 2G – Dust 2D.
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Zone: Gas 1 – Dust 21.
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Maximum surface temperature: temperature class T4 for 2G and 130°C for 2D.
Some types of gear units, given in the catalogue, are exceptions to this rule and are marked
temperature class T3 for 2G or 160°C for 2G and 2D.
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