Large panoramic photo showing a long, black conveyor belt stretching diagonally across the center of the frame, viewed from above. The conveyor is slightly soiled with light, irregular sand stains. To the left of the belt, along its edge, there is a yellow metal safety barrier with a handrail, running upwards and to the right. To the right of the belt, metal support rollers are visible. In the background, to the right of the conveyor, there is a large, complex industrial machinery structure in yellow and blue, used for crushing materials. In the distance to the right of the conveyor, trees and a fragment of a forest are visible, while to the left of the horizon, an open mining area with visible sand and rubble heaps can be seen. The entire scene is illuminated by bright daylight, and the sky is clear and blue.

Sealing Covers with Simmering – bearing protection in conveyor rollers

Product Description

Covers for conveyor rollers, especially covers with simmerings, are one of the most important protective elements in bulk material transport systems. Their main function is to effectively seal bearings against dust, moisture, dirt, and other contaminants that can lead to mechanical damage and faster wear.
At JOLA s.c., for over 25 years, we have specialized in the production of components for rollers, including durable and precise galvanized steel covers with an embedded radial simmering, which meet the rigorous operational requirements of the mining, cement, recycling, and energy industries.


What are covers with simmerings?

A sealing cover with a simmering is a steel element mounted at the end of the roller housing. It has an embedded radial seal (simmering), whose task is to prevent grease leakage and the ingress of dirt into the bearing. The use of a cover with a simmering significantly extends the life of the roller and reduces the risk of failure of the entire system.


Key features of our covers:

Galvanized steel – resistant to corrosion and operation in harsh conditions, High-quality simmering – with high temperature and chemical resistance, Precision manufacturing – perfect fit for the bearing housing and spacer sleeve, Standard and custom versions – possibility to adjust dimensions D1, D2, D3 and sheet thickness.


Application of covers with simmerings:

Our components are used in: belt conveyors in open-pit and underground mines, internal transport lines in cement plants and recycling facilities, sorting plants, gravel pits, and heavy industry plants, wherever rollers operate in dusty, humid, or vibratory environments.


Why choose JOLA s.c.?

Experience since 1997 – specialization in the production of roller parts, Own machine park – ensuring full control over quality and timeliness, Production based on client documentation – individual or serial production, Fast delivery and technical advice – we help in selecting the ideal component.


Covers for rollers – order from a proven manufacturer

Looking for reliable steel covers with simmerings for conveyor rollers? Choose quality, precision, and durability.Contact us to get a quote or technical support. We also produce bearing housings, rings, discs, spacer sleeves and other custom components.

Sealing cover with simmering
Sealing cover with simmering – technical drawing
Sealing cover with simmering
Type D1 (mm) D2 (mm) D3 (mm) Simmering H (mm) t (mm)
U6307S 37 80 80 35×50×7 20 0,7
  • ✔ Simering / Radial oil seal / Simmering / Симеринг
  • Pokrywka stalowa - cynkowana / Steel sealing cap - galvanized / Dichtkappe - stahl verzinkt / Стальная крышка - гальванизированная