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What is the Full Complement Cylindrical Roller Bearing?

A Full Complement Cylindrical Roller Bearing (FCCRB) is a high-capacity radial bearing that fits the maximum number of cylindrical rollers by omitting the cage, allowing for heavier loads in a compact space but at lower speeds due to increased internal friction from rollers contacting each other. These bearings offer high stiffness and rigidity and are essential for heavy-duty applications like cranes, material handling, and mining.

1. Features of Full Complement Cylindrical Roller Bearing

Full Complement Cylindrical Roller Bearings stand out in ultra-heavy-load industrial applications due to their unique structural design and outstanding performance advantages, with core features as follows:

Ultra-High Radial Load Capacity：The cage-free full complement roller design maximizes the effective contact area between rollers and raceways, distributing radial loads evenly across all rollers. Its radial load-bearing capacity is 30%-50% higher than that of caged cylindrical roller bearings of the same size, with a maximum radial dynamic load rating of up to 4000 kN, perfectly adapting to extreme heavy-load scenarios such as rolling mills and mining crushers.

Compact & Space-Efficient Structure：Without the constraint of a cage, the bearing accommodates more rollers within the same boundary dimensions, achieving stronger load-bearing capacity in a compact space. This design is ideal for heavy-duty equipment with limited installation space, eliminating the need to modify equipment structure to accommodate higher load requirements.

Excellent Shock Resistance & Stability：The full complement distribution of rollers forms a natural buffer against high-frequency impact loads. During operation, the rollers work together to absorb and disperse impact energy, avoiding local stress concentration. This feature makes the bearing highly adaptable to high-impact working conditions such as mining and metallurgy, with an operational failure rate much lower than conventional caged bearings.

Long Service Life & Reliable Performance：Bearing rings and rollers are primarily made of GCr15 high-carbon chromium steel, with SUS440C stainless steel available for corrosive environments. The surfaces undergo advanced hardening treatment, and roller end faces are precision polished to a surface roughness of Ra≤0.08μm, reducing friction and wear. Compared with conventional caged bearings, its fatigue life is increased by 20%, ensuring stable and reliable operation in long-term continuous working conditions.

Flexible Customization Capabilities：Supports comprehensive non-standard customization to meet diverse industrial needs: non-standard size adjustment (inner diameter, outer diameter, width), corrosion-resistant material modification (SUS440C stainless steel), separable inner ring structure customization for easy installation, and special lubrication solutions for high-temperature or extreme environments.

Cost-Effective Import Substitution：The technical specifications, including load capacity, precision, and service life, are fully aligned with international renowned brands such as SKF and INA. It ensures a stable and reliable supply chain while reducing procurement costs by 20%-30%, making it an ideal cost-effective option for domestic substitution in heavy industrial fields.

2. Applications of Full Complement Cylindrical Roller Bearing

Leveraging its ultra-high radial load capacity, compact structure, and shock resistance, Full Complement Cylindrical Roller Bearings are widely used in 10 key industrial fields, becoming an indispensable core component in heavy-duty mechanical systems:

Heavy Industrial Gearboxes：Integrated into large industrial gear reducers, wind turbine gearboxes (planetary stages), and marine gear systems, the bearing supports extremely high radial loads generated by gear meshing forces, maintaining stable transmission performance and reducing vibration and noise.

Steel & Metallurgical Equipment：As a core component in rolling mills, continuous casting machines, and straightening machines, it withstands heavy loads, shock, and vibration in steel production lines, adapting to high-temperature and dusty working conditions while ensuring precise control of metal workpiece dimensions.

Mining & Quarry Equipment：Applied to crushers, grinding mills, and vibrating feeders, the bearing operates reliably under extreme radial loads and harsh dusty environments, with strong adaptability to continuous operation and frequent impact loads in mining operations.

Construction Machinery：Installed in excavators, loaders, and track rollers, it is suitable for low-speed, high-load applications in construction operations, withstanding heavy radial loads and shock loads from complex construction sites.

Paper & Pulp Machinery：Used in paper machine rolls and press sections, the bearing provides high load capacity and operational stability, ensuring continuous and uniform pressure during paper production, which is critical for maintaining consistent product quality.

Wind Energy Equipment：Integrated into wind turbine main shafts and gearbox planetary systems, the compact design and high load capacity meet the space constraints and heavy load requirements of wind energy equipment, supporting long-term reliable operation in onshore and offshore wind farms.

Heavy-Duty Machine Tools：Applied to rotary tables and indexing heads of heavy-duty machine tools, the bearing delivers high rigidity to withstand heavy cutting forces, ensuring machining accuracy and stability in large workpiece processing.

Power Generation Equipment：Used in hydropower turbines and auxiliary rotating machinery of thermal power plants, it supports heavy shafts under continuous load, meeting the high reliability and long service life requirements of power generation equipment.

Industrial Presses & Extruders：A critical component in screw presses and plastic/rubber extruders, the bearing carries large radial loads at low speeds, ensuring stable force transmission and precise forming in high-pressure processing processes.

General Heavy Machinery：Widely used in conveyors, large industrial fans, blowers, and material handling equipment, the bearing prioritizes high load capacity over high speed, adapting to the working characteristics of low-speed, heavy-load, and continuous operation in general heavy machinery.

3. Price of Full Complement Cylindrical Roller Bearing

The price of Full Complement Cylindrical Roller Bearings is determined by multiple interrelated factors, with core influencing elements as follows:

Size & Load Rating：Size is the primary pricing driver. The standard product line covers an inner diameter range of 150–1000 mm, outer diameter of 210–1320 mm, and width of 36–272 mm. Larger bearings consume more high-quality bearing steel and require more complex precision machining and heat treatment processes, leading to significantly higher costs. Bearings with ultra-high load ratings (dynamic load rating above 2000 kN) also have a premium price due to their reinforced raceway structure and thicker wall design.

Precision Grade：Precision grades follow the international standard hierarchy: P0 < P6 < P5 < P4. High-precision P4/P5 grade bearings require stricter grinding processes, multi-round precision testing, and strict quality sorting, with a higher production rejection rate. Their prices are 40%-70% higher than standard P0 grade bearings.

Material Selection：Standard GCr15 high-carbon chromium steel is the most cost-effective option; upgrading to SUS440C stainless steel for corrosion resistance increases raw material costs by 50%-80%. Special high-temperature resistant materials further raise the price by 30%-50% compared to standard materials.

Structural Design：Single-row models (NCF series) are more economical, while double-row models (NNCF series) have a 30%-50% higher price due to their more complex structure and higher load-bearing capacity. Bearings with a separable inner ring design also cost 15%-20% more than integral structure models due to higher machining precision requirements.

Seal & Lubrication：Configuration Open-type bearings are the base economical option; adding contact rubber seals or non-contact labyrinth seals increases costs by 15%-30%. Special lubrication solutions, such as high-temperature resistant grease or corrosion-resistant lubricants for extreme environments, also raise the overall product price.

Order Quantity & Delivery：Time Bulk orders (≥100 pieces) qualify for a 15%-25% quantity discount, as mass production reduces unit processing costs and material waste. Small-batch orders (≤30 pieces) or urgent orders (delivery within 7 days) incur additional production scheduling, expedited processing, and logistics costs, increasing the unit price by 20%-40%.

4. How to choose the Full Complement Cylindrical Roller Bearing

To select the optimal Full Complement Cylindrical Roller Bearing and ensure long-term stable operation matching equipment requirements, purchasers should comprehensively evaluate the following key factors:

Working Condition：Matching First, clarify core working parameters: radial load (static/dynamic), operating speed (suitable for low-to-medium speed ≤2000 rpm), working temperature (-40°C to +150°C for standard models), and environmental conditions (clean, dusty, corrosive, high-temperature). Note that the bearing is designed exclusively for radial loads and has no axial load-bearing capacity; if combined radial and axial loads need to be borne, it must be used in combination with thrust bearings.

Size & Precision Confirmation：Determine the bearing’s boundary dimensions (inner diameter d, outer diameter D, width B) strictly according to the equipment design drawings to ensure installation compatibility. Select the precision grade based on application requirements: P0/P6 grade for general heavy machinery such as conveyors, and P5/P4 high-precision grade for precision equipment such as heavy-duty machine tool rotary tables to ensure operational accuracy.

Material & Structural Selection：For standard room temperature and clean working conditions, GCr15 high-carbon chromium steel and integral structure models are cost-effective choices. For corrosive environments, select SUS440C stainless steel material; for equipment requiring easy installation and maintenance, choose models with a separable inner ring structure.

Load & Speed Capacity：Verification Calculate the actual static and dynamic radial loads of the equipment, and select bearings with basic load ratings 1.2–1.5 times higher than the actual working loads to reserve a safety margin for shock loads. Verify that the bearing’s limiting speed (grease/oil lubrication) matches the equipment’s maximum operating speed, avoiding overspeed operation that may cause overheating and premature failure.

Supplier Qualification：Assessment Prioritize professional bearing suppliers with mature production capabilities and industry experience, such as NewBee Transmission. Verify the supplier's ISO9001 quality certification, advanced production equipment (CNC precision grinders, integral heat treatment lines), and complete product testing reports. Evaluate after-sales service capabilities, including warranty periods, on-site installation guidance, and 24/7 technical support, to ensure timely resolution of post-purchase issues.

Cost-Effectiveness：Balance Avoid blind pursuit of ultra-high specifications that exceed actual needs. For non-critical equipment such as general conveyors, select standard materials and precision grades to control costs; for core equipment such as rolling mill main shafts, prioritize product reliability and performance, and reasonably select customized solutions (e.g., corrosion-resistant materials, separable structure) to ensure long-term stable operation.

5. Manufacturer of Full Complement Cylindrical Roller Bearing

NewBee Transmission is a professional manufacturer and supplier of high-quality Full Complement Cylindrical Roller Bearings, focusing on providing reliable heavy-load bearing solutions for global customers in steel, metallurgy, mining, wind energy, construction machinery, and heavy equipment industries. With advanced manufacturing technology, strict full-process quality control, and customer-centric services, NewBee Transmission has become a trusted long-term partner for many large industrial enterprises worldwide.

Comprehensive Product Range：The standard product line covers single-row (NCF series) and double-row (NNCF series) Full Complement Cylindrical Roller Bearings, with inner diameter ranging from 150 mm to 1000 mm, outer diameter from 210 mm to 1320 mm, and width from 36 mm to 272 mm. Precision grades include P0, P6, P5, and P4, with material options of GCr15 high-carbon chromium steel and SUS440C stainless steel. The company also provides non-standard customization services for special working conditions, fully meeting diverse application needs.

Advanced Production & Testing Capabilities：Equipped with internationally advanced CNC precision grinding machines, integral automatic heat treatment lines, high-precision roller sorting equipment, and a professional bearing testing center, the company implements strict 100% inspection throughout the production process. From raw material spectral analysis and metallographic testing to finished product load capacity, precision, and wear resistance testing, every batch of products undergoes comprehensive quality verification to ensure consistency and reliability.

Professional Customization Services：The company's R&D team consists of senior engineers with over 15 years of experience in bearing design and manufacturing, providing one-stop customized solutions according to customers'specific working conditions and equipment requirements. Whether it is non-standard size design, high-temperature/corrosion-resistant material modification, structural optimization, or special lubrication and seal solutions, the team can efficiently complete design, sample development, and mass production. The sample development cycle for customized models is only 4–10 weeks, with urgent production support for key projects in metallurgy and mining industries.

Reliable Quality Assurance & After-Sales Service:All products strictly comply with ISO9001 quality management system standards and international bearing industry standards (ISO 3016), with a standard product warranty period of 12 months. The company has a complete after-sales service system, providing 24/7 online technical consultation, on-site installation guidance, and professional maintenance training. For quality problems caused by product defects, the company implements free replacement and maintenance services to ensure uninterrupted customer production.

Efficient Logistics & Global Supply Chain:Relying on intelligent warehousing management and an optimized global supply chain, NewBee Transmission ensures a delivery cycle of 5–12 days for standard in-stock models. The company cooperates with international logistics partners such as DHL and FedEx, and has established overseas warehouses in key regions, achieving fast and efficient delivery to customers worldwide, fully supporting customers'just-in-time production plans.

6. Precautions for Full Complement Cylindrical Roller Bearing

Proper installation, lubrication, and maintenance are critical to maximizing the service life and performance of Full Complement Cylindrical Roller Bearings, especially in ultra-heavy-load and harsh working conditions. Key precautions are as follows:

Standardized Installation:Operation Before installation, thoroughly clean the bearing, shaft, and housing bore to remove burrs, oil stains, welding slag, and other impurities, avoiding raceway and roller wear caused by foreign matter. Use specialized pressing tools for assembly, applying force evenly on the ring with interference fit (usually the inner ring). Strictly prohibit hammering or impact knocking, which will cause raceway deformation, roller damage, and permanent precision loss. For bearings with a separable inner ring, install the inner ring first and then the outer ring to ensure accurate positioning.

Scientific Lubrication:Management Select lubricants based on working temperature, speed, and load conditions: use heavy-duty lithium-based grease for standard conditions; use high-temperature special grease for high-temperature environments (≤150°C); use corrosion-resistant grease for corrosive environments. Open-type bearings require regular lubrication replenishment, with grease replacement every 800–1500 working hours; sealed bearings should be inspected regularly for grease leakage, and seals and grease should be replaced promptly if leakage is found. Avoid over-lubrication (which increases friction and heat generation) or insufficient lubrication (which causes dry friction and premature wear).

Real-Time Operation:Monitoring During equipment operation, continuously monitor the bearing’s temperature, vibration, and noise. The normal operating temperature of the bearing ranges from 30°C to 80°C, with a temperature rise not exceeding 18°C. If the temperature rises sharply, or abnormal vibration or noise occurs, it may indicate insufficient lubrication, installation misalignment, or overload. Shut down the equipment immediately for inspection and troubleshooting to prevent catastrophic equipment damage.

Proper Storage & Handling:Store bearings in a clean, dry, and ventilated environment with relative humidity ≤60%, avoiding direct contact with acids, alkalis, and other corrosive substances to prevent rust and corrosion. Bearings should be stored horizontally in their original packaging, and heavy stacking on the packaging is strictly prohibited to prevent deformation of the inner and outer rings. During transportation and handling, use shockproof packaging to avoid collision, dropping, or severe vibration, which may damage the internal structure and precision of the bearing.

Regular Inspection & Maintenance:Conduct regular disassembly inspections according to the equipment’s operating cycle and working conditions. Check the wear condition of raceways and rollers, the integrity of the bearing structure, the sealing effect, and the quality of residual lubricant during inspection. If abnormal wear, pitting, deformation, or damage is found, replace the bearing in a timely manner to avoid secondary damage to the host equipment. After inspection and maintenance, thoroughly clean the bearing and related parts, reapply qualified lubricant, and reinstall correctly according to assembly specifications.

Technical Specifications of Full Complement Cylindrical Roller Bearing 

For technical specifications, pricing, or custom engineering solutions:

Email: paul@newbeetrans.com

Website: www.newbeetrans.com