Plastic sheathed ball bearings:
Customized solutions for your requirements
Ball bearings with a plastic coating are ideal for smooth running and comfortable rolling. This protects the guide rail and other system components.
A wide range of materials are available, including various types of POM, PET, PA, or TPE. These offer different characteristics and allowing us to specifically address each customer’s requirements.
Plastic-sheathed ball bearings
Optimized lifetime and wear, as well as reduced deformation under static load
The optimal geometry of the contact surfaces and the right choose of material significantly influence the lifetime and wear of the rollerS, as well as the deformation under static load of the plastic.
For small series and/or high-load applications, the plastic coat is manufactured from semi-finished products, whereas granulates are used for cost-optimized large-scale production.
The steel parts of the sheathed ball bearings can also be customized. This allows the realization of individual installation situations and customer requirements.
Your advantages with plastic-sheathed ball bearings from SKT
Longevity through precise geometry
The specially designed contact surface geometry of the plastic coat results in less wear and a longer lifetime.
Quiet rolling
Our plastic-sheathed ball bearings ensure quiet and smooth rolling, ideal for applications where noise reduction is essential.
Optimized settling characteristics
Precise geometry and the right material selection can minimize the settling characteristics of the plastic.
Custom Design
From conception to production, we offer tailor-made solutions that are perfectly suitable to your installation situation and specific requirements. The steel parts of our sheathed ball bearings can also be customized.
Variety of materials
Depending on the application and technical requirements, a wide range of materials is available to find the optimal solution for your needs.
Flexibility in production
We are able to efficiently produce small and large batches. If the plastic coat being manufactured from semi-finished products or granulates, depending on requirements.
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Learn more about our plastic sheathed ball bearings and how they can optimize your industrial processes. Let’s work together to find the perfect solution for your requirements. Talk to one of our experts!
Discover the variety of our rollers
Thanks to a wide range of plastics, custom geometries, and the ability to combine with various steel materials, we can meet the highest demands in a variety of applications. Inner rings, bolts, and screw-on elements can also be customized specifically for any installation situation. With an outer diameter of 10 to approximately 100 mm, we cover a wide range of applications.
Ball bearings with POM coating
POM is the short designation for polyoxymethylene, also known as polyacetal. It is an engineering thermoplastic with high strength, toughness, and good dimensional stability and also known for its high wear resistance.
Ball bearings with PET coating
PET is the short designation for polyethylene terephthalate. This plastic is known for its high creep resistance and, when combined with long-term static loading, enables a reduction of the deformation and minimizes the this to a barely noticeable level.
Ball bearings with
PA coating
PA is the short designation for polyamide, often referred to as nylon. It offers a good combination of strength, stiffness, and abrasion resistance.
TPE-coated ball bearings
TPE is the short designation for thermoplastic elastomer. This plastic is particularly useful for minimizing rolling noise and providing a high level of rolling comfort. Its key characteristics include exceptional wear and tear resistance, as well as high impact strength.
Areas of application for the plastic sheathed ball bearings
Furniture fittings
Ball bearings with plastic coatings are used in furniture fittings, for example, in cabinet and drawer systems, kitchens, or tables. These ball bearings enable low-friction and quiet movement of drawers, doors, flaps, or other elements. The plastic coating protects sensitive surfaces and ensures smooth and easy running in the profile rail.
Fittings for building technology
In the field of building technology, plastic-coated ball bearings are used in sliding glass doors, sliding windows, winter gardens, room dividers, gates, sun protection systems, and elevator technology. These contribute to exceptionally smooth running and easy operation, even with large and heavy elements. Specially selected steels prevent corrosion, which is particularly advantageous in outdoor areas.
Sanitary
In the sanitary industry, plastic sheathed ball bearings are used in sliding shower doors and other sanitary fixtures, for example, to ensure smooth movement and longevity without significant wear. The advantages of plastic sheathed ball bearings in these applications include their resistance to water and moisture. Their ability to function in chlorinated and other aggressive environments is significantly influenced by the use of materials such as brass or various stainless steels.
Intralogistics & Conveyor Industry
Minimal rolling resistance, maximum mileage, and noise reduction are the outstanding properties of our plastic sheathed ball bearings in overhead systems. High speeds, cornering, and passing of switch points can be accommodated, for example, in transfer and shuttle systems. For transport systems with integrated belts, the plastics offer good adhesion, thus enabling reliable operation.
Machine- and Plant engineering
Plastic sheathed ball bearings are widely used in machine and plant engineering due to their excellent properties such as corrosion resistance, low friction, quiet rolling, and low maintenance requirements. These properties can be profitably utilized in, for example, movable machine covers, conveyors, or packaging systems.
The advantages of plastic sheathed ball bearings in machine and plant engineering include their long lifetime and reliability, even under the most demanding operating conditions.
Frequently Asked Questions about our plastic-coated ball bearings
How is the life time of plastic-coated ball bearings determined and optimized?
The life time is estimated based on the conditions you provide, such as load, applied forces, running profile, and desired lifespan. Optimizations are achieved through appropriate sizing, alignment with the running profile, and selection of the suitable material for each component of the ball bearing.
How does the choice of plastic material affect the load capacity of the ball bearing?
The choice of plastic material is crucial and largely determines the load capacity of the ball bearings. Different plastics offer varying load capacities and applications depending on their composition.
What special requirements exist for plastic-coated ball bearings in the food industry?
All components of the ball bearing – the plastic used, the steels, and the lubricant – must be food-safe and comply with the relevant certifications to allow use in the food industry.
Are plastic-coated ball bearings resistant to UV radiation and ozone?
Yes, there are special UV-resistant plastics that offer high durability in their natural color. The material shows particularly excellent UV resistance in black.
Which plastics are particularly resistant to abrasion and wear?
POM (polyoxymethylene) offers an optimal combination of toughness and wear resistance, making it one of the best plastics for use in ball bearings subjected to high loads.