Premium Industrial Bearings | Fast Delivery & Affordable | TFL Bearings
Insulated Bearing Manufacturer In China
- Superior Insulation to Prevent Costly, Unplanned Equipment Downtime
- 1-on-1 Consultation with Senior Engineers for Custom-Tailored Solutions
- Competitive, Factory-Direct Pricing with Reliable, On-Time Delivery
Choose your Preferred Category
We offer a variety of electric insulating bearings to choose from. The standard bearing classifications include deep groove ball bearings, cylindrical roller bearings, and tapered roller bearings. We have the standard bearing classifications shown below in stock and can deliver quickly.
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Electrically Insulated Deep Groove Ball BearingsVersatile and reliable, offering high-speed performance and electrical protection.
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Electrically Insulated Cylindrical Roller Bearings
Engineered for high radial loads and speeds, ensuring maximum equipment uptime.
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Electrically Insulated Tapered Roller Bearings
Ideal for handling heavy combined radial and axial loads with total insulation..
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Electrically Insulated Spherical Roller Bearings
Excels under heavy loads and misalignment, with robust electrical protection.
Who Is TFL
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Core Capabilities: An integrated manufacturer providing end-to-end services, from R&D and design to full-scale production and sales.
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Quality Assurance: We operate under a strict ISO 9001:2015 certified quality management system, ensuring every product meets the highest international standards.
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Key Breakthrough: In 2010, our independent R&D broke the international monopoly on insulated bearing technology, establishing a new era of domestic manufacturing excellence.
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Product Strength: We maintain a ready inventory of standard insulated bearings with inner diameters ranging from 30mm to 400mm for immediate dispatch.
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Market Recognition: With a customer retention rate of over 95%, we are the trusted, long-term bearing supplier for numerous leading electric motor manufacturers.
Why TFL Electrically Insulated Bearings
We understand that issues with bearing quality can cause stress and anxiety, and the cost of downtime can be prohibitive. That’s why we emphasize verification and inspection of all bearings to ensure your customers receive exactly the right product.
- Equivalent： TFL electrically insulated bearings are interchangeable with SKF, FAG, and NKE original bearings and are available at low prices with fast delivery.Interchangeable with SKF INSOCOAT®, FAG Current-insulating bearings, NSK Insulated Bearings, etc. We offer competitive pricing and fast delivery.
- Customization： TFL offers tailor-made electrically insulated bearing solutions to meet our customers' unique requirements and ensure optimum performance.
- No MOQ: We accept orders of any size, providing flexibility and convenience to all customers.
- Fast delivery: Unlike original bearings, our efficient and flexible processes ensure timely delivery of bearings to meet urgent needs. For commonly used insulated bearing models, our extensive bearing inventory can quickly fulfill orders to ensure customers get the bearings they need.
Superior Performance, Over 50% in Cost Savings
High-grade balls for smooth,
low-noise operation at high
speeds
High-purity steel for superior
fatigue strength
Pressed steel cage with
tightly controlled clearances
for reduced friction
Alumina-based ceramic
coating sealed with a special
acrylic resin delivers superior
insulation resistance and
moisture protection
Custom Electrically Insulated Bearings - Engineered for Your Specific Applications
More than a supplier, we are your strategic manufacturing partner. With over 15 years of expertise and advanced coating technology, we transform your unique designs into reliable, high-performance products.
- Bearing Type: Deep Groove Ball / Cylindrical Roller / Other types on request
- Dimension Range: 30mm - 400mm (customizable beyond the standard range)
- Insulating Coating: Aluminium Oxide (Al₂O₃) Ceramic Coating
- Insulation Performance: Up to 1000V DC / Up to 3000V DC / Higher voltage ratings
- Cage Material: Steel / Brass / Nylon (PA66)
- Precision & Clearance: P6, P5 / C3, C4 (Can be specified based on application)
- Partnership Model: Build-to-Print/Sample (OEM) / Collaborative Design (ODM) / Coating Service on Your Bearings
Our production environment
Factory-direct, with no middlemen. We lower your procurement costs while ensuring a stable and reliable supply chain. choose us to save a lot of intermediate links, to bring you the maximum profit margin!
Key Applications of Insulated Bearings
We provide proven insulated bearing solutions that ensure both complete electrical protection and optimal mechanical performance, enhancing the longevity and reliability of your machinery in any industrial environment.
Bearings For Railway Transportation
TFL’s insulated bearings, with robust aluminum oxide ceramic coatings, are vital for railway traction motors. They establish a powerful dielectric barrier, effectively blocking damaging shaft currents from Variable Frequency Drives (VFDs), thus preventing electrical erosion and premature equipment failure.
By safeguarding these critical components, our bearings significantly enhance the safety, reliability, and uptime of modern railway systems. As a trusted supplier, we provide proven solutions designed for the rigorous demands of daily rail operation.
Hot Market
- Special Insulated Bearings for Traction Motors
- High Resistance to Shock & Vibration
- Hybrid Ceramic Bearing Options
Bearings For Wind Power
Wind power is cornerstone of sustainable energy vital for combating climate change and the one solution to energy
issues such as the prevention of global warming.
Given the substantial maintenance costs and extended downtime associated with these large, eco-friendly systems, our bearings offer indispensable protection. By creating a robust dielectric barrier, they ensure the stable, reliable, and continuous operation of wind turbines, significantly reducing maintenance interventions and supporting a greener, more efficient energy future.
Hot Market
- Main Shaft & Generator Bearings
- High-Reliability & Long-Life Design
- Coating for Harsh Environments
Bearings For Industrial Motor
Industrial motors are the undisputed heart of productivity, driving essential processes across nearly every sector. However, modern Variable Frequency Drives (VFDs) generate damaging shaft currents that threaten motor longevity and reliability.
TFL’s insulated bearings offer critical protection, establishing a robust dielectric barrier. This prevents electrical erosion and premature failure, ensuring consistent, long-term performance of these vital machines. By safeguarding the ‘heart’ of your operations, our bearings significantly reduce unplanned downtime, cut maintenance costs, and enhance operational efficiency and motor lifespan.
Hot Market
- Insulation Protection for VFD Motors
- Insulated Deep Groove Ball Bearings
- Insulated Cylindrical Roller Bearings
Bearings For Industrial Pumps & Fans
For VFD-driven industrial pumps and fans where stray currents threaten reliability, our insulated bearings are the proven solution. They feature a specialized dielectric coating that safely interrupts the electrical path, preventing catastrophic bearing failure and costly downtime. This makes our bearings a fundamental component for ensuring the safe, continuous operation of your most vital systems.
Hot Market
- Preventing Premature Failure from Shaft Currents
- Reducing Maintenance Frequency & Costs
- Standard Dimensions for Easy Replacement
Bearings For Mining Industry
The mining industry is foundational, providing essential raw materials that underpin modern infrastructure and technology. Operations involve colossal, heavy-duty machinery in harsh, often remote environments, demanding exceptional safety standards and continuous production. These demanding conditions, coupled with the high cost and risk of maintenance, make equipment reliability paramount.
TFL’s insulated bearings offer a critical safeguard, specifically engineered for the mining sector. They create a robust dielectric barrier, effectively blocking damaging shaft currents generated by Variable Frequency Drives (VFDs), which otherwise lead to electrical erosion and premature equipment failure. This ensures the stable and uninterrupted operation of vital mining equipment, significantly reducing costly downtime, enhancing worker safety, and sustaining productivity in the most challenging conditions.
Hot Market
- For Excavator, Crusher & Conveyor Motors
- Design for High Contamination & Shock Loads
- Enhancing Equipment Reliability in Harsh Environments
Bearings For Oil & Gas Industry
We utilize a robust aluminum oxide coating to provide superior electrical insulation in our bearings. This is vital for Oil & Gas operations, where stray currents from VFDs can cause sparks and lead to catastrophic failure in potentially explosive atmospheres. As a dedicated partner, we deliver insulated bearings that enhance equipment safety and maximize uptime for your critical machinery.
Hot Market
- For Pumps, Compressors & Drilling Motors
- Ensuring Continuous Operation of Mission-Critical Equipment
- Optional Coatings for Corrosive & High-Temp Environments
Building Trust on the Global Stage
Connecting with clients from Europe, the Americas, and Asia. Direct access to our engineers for in-depth consultation. A hands-on opportunity to see and feel the superior quality of our bearings.
We believe the strongest partnerships are built on trust and face-to-face communication. That’s why we actively participate in major industry exhibitions worldwide (such as Hannover Messe and Power Transmission Expo). These events provide our global clients a valuable opportunity to meet our engineering team, inspect our products firsthand, and engage in deep technical discussions about their unique challenges.
From technical seminars to exhibition floors, we cherish every interaction with our clients. These moments capture how we connect with partners across the globe, share our expertise, and collaborate on finding the best solutions. We look forward to meeting you and exploring how we can work together.
Boost Productivity with TFL's Reliable Solutions
Factory-direct, with no middlemen. We lower your procurement costs while ensuring a stable and reliable supply chain. choose us to save a lot of intermediate links, to bring you the maximum profit margin!
"As a B2B client, finding a supplier that combines product excellence with outstanding service is paramount. TFL Bearings delivers on both fronts. Their electrical insulated bearings offer superior insulation properties and long-lasting durability, crucial for our critical applications. We also appreciate their quick dispatch, the flexibility for customized solutions, and the clear communication from their customer service. Their team is always ready to provide comprehensive data and consultations, ensuring we get exactly what we need, every time."
"After experiencing inconsistencies with other suppliers, we switched to TFL Bearings for our electric insulated bearings, and the difference is remarkable. Their bearings offer significantly superior and more stable insulation performance, a critical factor for our sensitive equipment. Since integrating TFL's electric insulated bearings, we've received overwhelmingly positive feedback from our own clients, all noting enhanced system reliability and peace of mind. Their products truly stand out in the market."
"We've been incredibly impressed with the electrical insulated bearings supplied by TFL Bearings. Their exceptional insulating performance has significantly enhanced the reliability of our machinery, preventing costly downtime. The bearings are remarkably durable, even in demanding environments. Furthermore, the detailed technical support and prompt responses from their team, along with efficient logistics tracking, made the entire procurement process seamless. A truly reliable partner for high-performance electrical insulated bearings."
"We rely on TFL Bearing for our electric insulated bearings, and they consistently exceed expectations. Their ability to deliver customised solutions quickly, coupled with real-time logistics tracking, ensures our production schedules remain on track. The bearings themselves are incredibly reliable with outstanding insulation, but it's their responsive, knowledgeable, and friendly customer service that makes them our preferred partner. A truly dependable supplier."
Electrically insulated bearings refer to the general term for bearings that can prevent the passage of electric current and have insulating properties themselves.
Their insulating performance is usually achieved by processing a layer of aluminum oxide coating on the outer ring or inner ring of the bearing using internationally advanced technology to withstand DC voltage. They are generally divided into inner ring coated insulated bearings and outer ring coated insulated bearings. Their basic coating can withstand DC voltage up to 1000 volts. TFL Bearing supplies insulated bearings with coatings that can withstand 1000-3000V DC according to customer requirements.
Because the current in the motor can damage the bearings, leading to shutdowns.
Modern motors, especially those controlled by Variable Frequency Drives (VFDs), generate tiny destructive currents inside the bearings. These currents, like continuous small electric sparks, gradually erode the smooth surfaces of the bearings, causing "electrical erosion" damage, which ultimately results in premature bearing failure and costly equipment shutdowns.
Electrically insulated bearings, with a special ceramic coating, act like putting an "insulating coat" on the bearings, fundamentally blocking the current's path, thereby protecting the bearings and ensuring the long-term stable operation of the motor.
We create our insulation coatings using an industry-leading and highly mature plasma spray process. Our key strength lies not in a secret formula, but in our deep process optimization and strict quality control. This ensures that every product we make delivers exceptional reliability and consistency.
Specifically, our technical advantages are:
- Excellent Coating Adhesion and Density: Through an optimized process, our ceramic coating forms a powerful bond with the steel bearing. This makes the coating extremely durable, preventing it from chipping or peeling even under heavy loads, vibration, and shock. The result is a much longer service life.
- Stable and Reliable Insulation: Our standard coating is precisely controlled to consistently withstand at least 1000V DC. We use carefully selected raw materials to ensure the coating is pure, providing stable, high insulation resistance that effectively blocks damaging bearing currents.
- Superior Physical Properties: Besides providing insulation, the coating is also very hard and wear-resistant. It effectively stands up to moisture and chemicals, making it ideal for various complex industrial environments.
In summary, our advantage is turning a proven technology into a product you can trust. Through expert craftsmanship and uncompromising quality control, we deliver a product that is stable, long-lasting, and gives our customers complete peace of mind.
We certified under major international standards like ISO9001, IATF 16949, RoHS, and REACH, etc.
For a complete list of our certifications or to inquire about specific requirements for your region, please do not hesitate to contact our technical support team.
Absolutely Yes! We are fully committed to supporting our customers. Our dedicated team of application engineers is ready to assist you with any technical questions or challenges you may face.
For the fastest response, please reach out to us via:
- Email: info@sdtflbearing.com
- Contact Form: [Contact Us]
To help us resolve your issue efficiently, please include details such as the product model, your application, and a brief description of the question or problem.
We strive to respond to all inquiries within 24 business hours. We value your questions and look forward to helping you find the right solution.
