Exitor Conveyor Roller
EXITOR is an extreme service roller. It is designed to protect the seal in 3 different ways, and can be used on continuous heavy duty and high speed operation belt conveyors for granulose or dusty bulk materials conveyed in a hostile environment.
Dynamic Balances
Our automatic mass production assembly techniques guarantee a high degree of balance and minimum eccentricity. Impact forces during high speed operation is greatly reduced, thereby enhancing the life span of bearing
Welded End
The pipe and bearing housing are welded by an automatic circumferential welding machine. A welded construction will protect the bearing by preventing the entry of dust and moisture of the clearance between the roller end and bearing housing. Furthermore, the smooth rounded edge provided by the welded ends will minimize belt wear.
Bearing and Bearing Housing
High quality deep groove ball bearings with C3 clearance are used in every roller. Bearing housings are formed in a multi-stage pressing operation, providing such a high degree of accuracy for bearing and seal that no further machining is necessary.
Seal
The bearings of the EXITOR rollers are protected internally and externally by a protective sealing system which keep lubricants from leaking and prevent foreign matter from seeping into the roller. The components of the sealing system are;
- A protective and corrosion-resistant shield mounted firmly on the roller shaft. This acts as a barrier against entry of foreign matter.
- A low function rubber lip-seal to prevent seepage of foreign liquid into the roller.
- A steel cover cap with a large housing acting as a dust trap for any particles that may eventually enter roller.
- A labyrinth seal pre-loaded with grease which provides as a last line of dense before the bearing to keep out any dust particles that have penetrated to this stage.
Inspection and Testing
All our rollers are tested to ensure specifications conform to recommended standards.
Maintenance-Free Operation
The multiple labyrinth seal type has a built-in non-lubrication system which is maintenance-free and hence reduces running cost.
Working life expectancy is up to 30,000 hours or more, depending on the usage
Raw Materials and Specifications
Axle (shaft) – cold-draw steel ST37 DIN 17100, E24 AFNOR NFA 35501
Rod – 20.2 25.2 30.2 40.2 ISO hII accuracy fine polished to 20, 25, 30 40 levels on the universal sealed bearing packaging area. The precision attained is ISO h6
Steel roll – welded with DIN2394 standard, components are ST37 to fit DIN17100 standard
Bearing housing – cold press working fit ISO M7 accuracy deep press steel with raw material fit DIN 1623-1624 standard
Inner seal circle – lip-lining sealed, component is made of NYLON 6 (ISO Pa6)
Housing / Cover – deep press steel fit DIN 1623-1624 standard
Outer seal circle – sliding rubber ring with V shape, components are nitrosation rubbers which are long lasting, wear resistant and antioxidant.
Function of protecting cover – used to protect the roller from axial vibration, made by copper alloy which is anticorrosive.
Lubricating oil – to ensure the roller bearing is lubricated continuously, using 2, 3 gradelong lasting lithium grease