A) Shell
- Manufactured from seamless or lengthwise welded accurate steel tubes of ISO 4200 grade steel
- Wall thickness corresponds to the loading and operating conditions the roller is subjected
to and is optimized by FEM calculations and verified by long-term testing
B) Shaft
- Drawn from ISO 1035 - 1, ISO 1035-4, EN 10278 grade round bars
- The ends of shafts are CNC machined
- The shaft is ground to a fit tolerance of ISO h6
C) Bearing housing
- Silumin-aluminium alloy,pressed steel sheets or casted.
- Bearing fit tolerance to ISO M7
D) Bearing
- Single-row ball bearings are used, with dimensions in compliance with ISO 15
- 2RS - Acrylonitrile butadiene rubber (NBR) seal with sheet steel reinforcement on both sides of the bearing
which prevent contaminants from entering the bearing
- C3 radial bearing clearance provides for optimum roller operation
- Bearings are filled with lithium based water repellent grease
- Bearings are filled to 70 % of the bearing’s free space which provides for operation without
the need for further lubrication throughout it’s service life
E) Labyrinth sealing system
- The system comprises of several sealing elements which prevent contaminants from entering the bearing
- Individual elements of the system are circular in shape with interlard lips which form a labyrinth
- The shape of the lips is designed to prevent the intrusion of contaminants into the bearing chamber
without increasing rotational frictional resistance
- The system has two parts - an inner labyrinth and an outer labyrinth
- The space between the lips of the labyrinth is filled with grease for catching fine dust particles.
- The grease is the same as the bearing grease
- Elements of the labyrinth sealing system are made from silumin-aluminium alloy,pressed steel sheets,plastic or casted.
- The labyrinth system can be fitted with a friction ring to prevent the intrusion of water
F) Circlip
- Manufactured from hardened spring steel in compliance with DIN 471
- Prevents axial movement of the shaft
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