临清市科固轴承有限公司
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About Us

We are a source factory specializing in the research and development, manufacturing, and sales of outer spherical bearings and tapered roller bearings. Our products are widely used in agricultural machinery, conveying equipment, engineering machinery, automotive transmission, and industrial automation fields, providing stable and reliable bearing solutions for global OEM customers and distributors.

Since its establishment, the company has adopted a refined production management model, coupled with a strong R&D team, solid production processes, and reliable products of excellent quality, winning the favor of many domestic and foreign customers and becoming its long-term stable partner.

Establish a professional technical team to provide comprehensive technical support, including helping customers select suitable bearing models for different working conditions of industrial machinery. Conduct on-site training on usage and installation guidance at the customer’s factory to reduce malfunctions and losses caused by improper operation. At the same time, provide comprehensive protection measures for the product, carefully consider packaging design and transportation plans.

Relying on its strong reputation and high-quality product quality, the company has successively obtained multiple certificates of excellent production and excellent bearing supplier. The company’s business network has spread all over the world, and its products are exported to multiple countries and regions.

We provide one-stop service from bearing selection, customized design to bulk delivery

For outer spherical bearings: We can provide a full range of seat bearings such as UC/UCP/UCF/UCFL, supporting non-standard seat body processing, special sealing and surface treatment, and adapting to different working conditions for anti-corrosion, dustproof, and anti loosening needs. The products fully comply with ISO international standards and are suitable for various global equipment matching and after-sales replacement needs.

For tapered roller bearings: single row, double row, and four row structures can be produced to meet different speed, load, and axial positioning requirements, and are widely used in heavy-duty transmission scenarios such as axles, transmissions, and differentials. Whether you need fast delivery of standard models or customized development for special working conditions, we can accurately match your equipment needs.

Whether you need fast delivery of standard models or customized development for special working conditions, we can accurately match your equipment needs.

Corporate Advantages

We have 12 years of manufacturing experience in outer spherical bearings and tapered roller bearings. Our core team has been deeply involved in the bearing industry for more than ten years and has served well-known domestic and foreign agricultural and construction machinery brands.

The factory is equipped with professional automated processing production lines and CNC grinding machines, which can achieve independent control of the entire process from forging, heat treatment to precision grinding; We have complete testing equipment and a professional technical team, which can achieve customized control of key indicators such as tolerance, clearance, and preload according to customer requirements, ensuring product accuracy and consistency.

FAQ

U&M highly values every trust you place in us. We keep increasing investment, continuously upgrading infrastructure and equipment, optimizing and improving production processes as well as the overall quality of bearings, and strictly controlling every process to ensure you always have full confidence in our products.

+Q1: What quality assurances do U&M bearings have?

Our bearings undergo strict quality inspection and control to ensure every product complies with international standards. Adopting high-quality raw materials and advanced manufacturing technologies, we deliver long-term stability and reliable product performance.

I. Raw Material Quality Control at the Source

1. Fixed-point Procurement of Special Bearing Steel

National standard high-purity 100Cr6 special alloy steel for bearings is adopted. Each batch is accompanied by mill material certificates and hardness reports. Recycled scrap steel is strictly prohibited. The hardness of raw materials stably reaches HRC60–64, featuring excellent wear resistance and fatigue resistance.

2. Full Incoming Inspection for Access Approval

Four inspections are carried out for incoming steel: eddy current testing, metallographic analysis, dimensional tolerance detection and surface defect inspection. Raw materials with cracks, slag inclusions or out-of-tolerance dimensions will be rejected directly to prevent defective raw materials from entering the production line.

3. Full-chain Material Traceability

Each batch of steel and every batch of bearings are bound with furnace numbers and batch numbers. In case of quality issues, the original steel mill and smelting batch of raw materials can be traced backwards.

II. Quality Assurance via Automated Precision Production Processes

1. Fully Automated Closed-loop Production Lines

Integrated connecting production for inner and outer ring grinding, superfinishing, rolling element processing and automatic assembly reduces dimensional errors caused by manual intervention. Online micrometers are equipped on equipment to adjust processing parameters in real time.

2. Standardized Heat Treatment Processes

Constant-temperature carburizing / overall quenching plus low-temperature tempering strictly controls metallographic structures to avoid deformation and soft spots, ensuring bearings remain undeformed under long-term heavy loads.

3. Matched Special Lubricating Grease

High-temperature resistant, water-resistant and long-service-life lubricating grease is selected according to different working conditions of automobiles, construction machinery and industrial equipment. Vacuum grease filling and sealing are adopted before delivery to eliminate early oil leakage and abnormal noise.

III. Full Set of Laboratory Factory Inspection

1. Online Full Inspection (Every Bearing Must Pass Before Delivery)

Vibration and noise test (BVT vibrometer): Low noise is controlled to meet the mute requirements of motors and wheel hubs; Dimensional precision inspection: Roundness, roughness, clearance and assembly dimensions are controlled at the micron level, supporting multiple precision grades including P0/P6/P5; Surface eddy current inspection: Screen surface cracks, collisions and processing defects; Cleanliness inspection: Control internal impurities to avoid early wear and seizure.

2. Batch Sampling Reliability Tests in Laboratory

Bearing life durability tester: Simulate continuous heavy-load operation to verify fatigue service life; Temperature rise and waterproof sealing tests: Simulate high-temperature and muddy water working conditions; Metallographic & hardness tester: Regularly sample and inspect heat treatment hardness and metal structures; Accelerated aging tests for grease leakage and dust resistance. All test data are archived, and test reports of corresponding batches can be provided to customers.

+Q2: What are the core advantages of U&M bearings?

Specialized Product Lines: We focus on spherical and tapered roller bearings with complete product ranges, sufficient inventory and rich experience in non-standard customization; High Cost Performance: Large-scale production by source manufacturers with no middlemen; Stable and Durable: Pure raw materials and mature processes deliver longer service life than ordinary products;

+Q3: What does U&M bearing after-sales service include?

We provide one-stop pre-sales, in-sales and after-sales services throughout the whole process. Free model selection & matching assistance and working condition adaptation recommendations are offered before sales; we track order production progress in real time during sales; professional technical support such as installation guidance and troubleshooting is available after sales.

+Q4: Can you accept orders for non-standard customized bearings?

We support customization of various non-standard spherical bearings and tapered roller bearings, which can be produced in accordance with customer drawings, samples and dimensional parameters.

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