Precision engineered wear-resistant oil seals designed for critical sealing applications in heavy rotating machinery.
Designed for heavy industrial drives and gearboxes, featuring massive radial load capacity and split-ring design configuration.
High-precision tapered rollers designed to withstand heavy combined axial and radial forces in automotive and mining drives.
Custom engineered heavy-duty trailers utilizing high-tensile strength Q690 steel and multi-coat anti-corrosion primer systems.
Reliable heavy cargo transport systems engineered to perform under extremely high torque and heavy dynamic road forces.
Chromium steel bearing built for mining, metallurgy, and agricultural equipment requiring high dimensional stability.
Robust industrial towing units manufactured for complex distribution systems and heavy off-road cargo movements.
Double row heavy load design providing automatic self-alignment, low friction heat build-up, and extreme mechanical lifespan.
Large ball bearings, typically defined as those with outer diameters exceeding 200 mm, are foundational components of heavy machinery, wind power assemblies, maritime propulsion systems, and metallurgical lines. Over the last two decades, Chinese bearing manufacturers have systematically transitioned from simple high-volume parts suppliers to advanced engineering giants. By leveraging massive capital investments, centralized material supply lines, and cutting-edge precision heat treatment plants, companies in China are setting new standards for the global bearing supply chain.
For procurement officers, sourcing from China is no longer just about the base price; it is a calculated decision based on optimized lead times, advanced metallurgical purity, and strict adherence to international standardizations like ISO, DIN, and ANSI. JITO Bearing lies at the center of this movement, offering direct factory access to products engineered with strict tolerance standards.
Modern Chinese manufacturing facilities rely on centralized supply ecosystems. With raw materials like high-carbon chromium steel (GCr15) sourced from top-tier national metallurgy plants and processed through fully automated CNC grinding centers, the structural integrity of big ball bearings is guaranteed. Standardized processing methods are monitored under IATF 16949 structures to prevent surface cracks, control radial clearances, and guarantee consistent operational life.
At JITO, we oversee the entire value loop: from direct forging and rough machining in specialized mills to final precision heat treatment and grinding in hand-selected environments. This eliminates micro-structural variability and ensures that the final bearing delivers excellent load capacities.
JITO Bearing is a modern scientific and technological enterprise integrating research and development, production, and international trade. We are proud members of the China Association of Automobile Manufacturers and the China Bearing Industry Association. Recognized as a national High-tech Enterprise and a specialized, refined, and innovative developer in Hebei Province, our factory serves as a standard-setting company within the Handan Bearing Association.
Under the visionary leadership of General Manager Shizhen Wu (Standing Committee Member of the Political Consultative Conference of Guantao County), JITO has dedicated itself to fabricating heavy-duty bearings that meet strict performance targets. Our components operate with precision levels of P0, P6, and P5, and can run quietly within noise boundaries of Z1V1, Z2V2, and Z3V3.
To improve convenience and communication for our global commercial clients, we established Liaocheng Jingnai Machinery Parts Co., Ltd in Shandong Province, which is situated just 15 minutes away from the Liaocheng high-speed railway station, easing client visits and product inspections.
JITO operates two distinct production facilities covering over 30,000 square meters. The first handles rough machining, forging preparation, and metallurgical heat treatments. The second focus area includes precision grinding, assembly, cleanroom inspection, and secure packaging.
Our registered trademark, JITO, is registered both in the European Union and under the Madrid System. Our facility conforms to ISO9001:2015, IATF16949:2016, and ISO14001 environmental and quality benchmarks, giving global purchasing teams total peace of mind.
Below is an illustrative guide to industrial pricing structures for big ball bearings manufactured in China. Actual quotes fluctuate based on raw material market prices, precision rating requirements (P5/P4 vs P0), and custom seal configurations.
| Bearing Model | Outer Diameter (mm) | Inner Diameter (mm) | Basic Dynamic Load (kN) | Standard Precision | Est. Price Range (FOB China USD) |
|---|---|---|---|---|---|
| 6220 Deep Groove | 180 | 100 | 127 | P0 / P6 | $28.50 - $45.00 |
| 62305 Heavy Radial | 62 | 25 | 22.5 | P6 / P5 | $4.80 - $9.50 |
| 22320CCW33 Spherical | 215 | 100 | 640 | P6 / P5 | $110.00 - $185.00 |
| NU2308 Cylindrical | 90 | 40 | 112 | P5 / P4 | $15.00 - $32.00 |
| 32306 Tapered Roller | 72 | 30 | 81.4 | P6 | $8.50 - $18.00 |
| 51220 Thrust Ball | 170 | 100 | 153 | P0 / P6 | $35.00 - $68.00 |
*Note: The prices listed above are index indicators for volume shipments. Contact our engineers for high-precision customizations and current market-adjusted pricing matrices.
Over 36% of big ball bearings suffer premature field failure due to poor lubricant choices or contamination. High operating temperatures breakdown dynamic grease film boundaries rapidly.
JITO Mitigation:
We integrate high-grade NBR and FKM seals with premium mineral-based or synthetic greases that maintain chemical viscosity up to 180°C.
Large bearings working in mines or wind farms experience extreme cyclic loads that lead to spalling and subsurface fatigue cracks in low-grade steel housings.
JITO Mitigation:
By using degassing technology and high-purity GCr15 chromium steel, we keep oxygen levels below 5 ppm, improving dynamic load performance.
For large-scale components, minor variations of even a few microns can lead to excessive heat generation, uneven housing wear, and assembly issues.
JITO Mitigation:
Our quality testing center uses advanced tools like coordinate measuring machines (CMMs), roundness meters, and profilometers to maintain tight tolerances.
JITO's big ball bearings and high-performance components are used across major global industrial sectors, ensuring stable machinery operations in harsh environments.
Continuous casting lines and rolling mills require bearings that can withstand extreme heat and constant high-impact radial forces. Our specialized heat-treated cylindrical and spherical roller bearings provide stable performance and longer service lives under these demanding conditions.
Crushers, vibrating screens, and heavy excavators need parts that can handle heavy particulate contamination and high vibration levels. Using advanced double-lip seals and synthetic lubrication helps keep contaminants out of the bearing assembly.
Large trailers and commercial vehicle hubs experience massive radial loads and constant vibration. Combining JITO deep groove bearings, tapered rollers, and high-tensile steel trailer systems ensures reliable, long-distance cargo transportation.
To achieve zero-defect manufacturing, our testing facility uses advanced diagnostic tools. We measure and analyze every parameter, including roundness, material composition, and dynamic fatigue life.
Modern industrial operations increasingly rely on real-time diagnostic systems. Integrating temperature, vibration, and speed sensors directly into the bearing housing allows operators to detect potential issues early, preventing costly downtime in remote installations like wind turbines.
Advanced surface coatings, such as black oxide and phosphate treatments, help protect large bearings from rust and surface wear. These treatments are essential for machinery operating in damp or marine environments, as they improve lubricant adhesion and reduce friction.
We use advanced spectrometers to run chemical analyses on every incoming batch of high-carbon chromium steel (GCr15). This helps verify that trace elements and inclusions remain within strict international limits before forging begins.
Standard size bearings are kept in stock and ready to ship. Custom engineering orders requiring specialized forging, custom cages, or unique sealing systems typically require 45 to 60 days to process and manufacture.
Yes, our entire manufacturing process conforms to ISO 9001:2015 and IATF 16949:2016 standards. All dimensional parameters, tolerances, and radial clearances are designed to meet or exceed equivalent ISO and DIN requirements.
Separable single-direction design for road machinery, offering reliable support under high axial-direction forces.
High-speed radial ball bearing built with carbon chromium steel for low friction, low vibration, and extended service life.
Precision cast alloy steel fuel system component, certified for stable operation under high pressures.
Customizable double-lip shaft seals designed to prevent oil leaks and protect bearings from moisture and dust.
Heavy duty mechanical component manufactured in compliance with international export regulations and quality audits.
Double rubber sealed precision ball bearing, pre-lubricated to minimize maintenance requirements and operational noise.
Standard metric radial ball bearing built with high-quality steel for electric motors and home appliances.
High load capacity tapered roller bearing, engineered for construction machinery and heavy automotive applications.
Jito Bearing