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What is a CRBF Crossed Roller Bearing?

CRBF crossed roller bearings are specifically designed for high-precision, high-speed rotary systems, featuring an integral outer ring, split inner ring, and precision-machined integrated flange with standard mounting holes. The 90° orthogonal "X"-shaped cylindrical rollers enable simultaneous bearing of radial, axial, and moment loads, ensuring excellent stability and rigidity. The flange-integrated design simplifies installation by eliminating the need for additional supports, making them ideal for industrial robots, precision rotary tables, high-speed machining centers, and automation machinery requiring compact structure and reliable high-speed operation.

Features of CRBF Crossed Roller Bearing

Integrated flange for easy installation: The outer ring integrates a precision-machined flange with standard mounting holes, eliminating the need for additional flange seats or supports. Direct bolt fixation shortens assembly time by 40% and reduces installation costs.

High-speed adaptability: Optimized roller profile and low-friction cage design (brass or nylon 66) enable maximum speeds of 2800 rpm (grease lubrication) and 3500 rpm (oil lubrication), outperforming conventional crossed roller bearings by 20%-30%.

Superior rigidity and precision: Rollers are crossed at 90° for line contact with raceways, providing 3x higher rigidity than ball bearings. Precision grades include P5, P4, P2, with radial runout ≤0.003 mm (P4 grade) and axial runout ≤0.005 mm, meeting micron-level positioning requirements.

Strong combined load capacity: A single bearing simultaneously bears radial, bidirectional axial, and tilting moment loads, replacing the need for separate radial and thrust bearings, and reducing equipment volume by 30%-50%.

Long service life: Bearing rings and rollers use GCr15 high-carbon chromium steel (HRC 60-62) with surface hardening treatment; roller end faces are precision-polished (Ra≤0.1μm), extending fatigue life by 30% compared to conventional bearings.

Import substitution advantage: Technical indicators (precision, rigidity, speed) meet international standards, directly replacing imported brands such as IKO, with 30%-50% lower procurement costs and more stable supply.

Applications of CRBF Crossed Roller Bearing

Industrial robotics: Used in robot arm joints (elbow, wrist, shoulder), end-effectors, and harmonic drive supports. The compact flange design fits limited joint space, while high rigidity ensures precise motion control.

Precision rotary tables: Applied in CNC indexing tables, laser processing rotaries, and precision positioning platforms. High precision and rigidity guarantee machining accuracy for workpieces in high-speed cutting scenarios.

Semiconductor equipment: Used in wafer aligners, lithography stages, and inspection actuators. Low friction and stable rotation avoid damaging sensitive semiconductor components, ensuring microfabrication precision.

Medical devices: Integrated into CT/MRI scanning components, surgical robots, and high-precision positioning systems. Compact size, low noise, and repeatable accuracy adapt to medical equipment’s strict requirements.

Aerospace and defense: Used in UAV gimbal systems, radar rotation mechanisms, and satellite targeting optics. Lightweight, high rigidity, and resistance to complex loads meet aerospace reliability standards.

Machine tool attachments: Applied in tool changers, probe heads, and small precision spindles. Rigidity and accuracy improve machining repeatability and reduce equipment operation errors.

Factors Affecting the Price of CRBF Crossed Roller Bearing

Size and load rating: Larger inner diameter (e.g., >100 mm) or higher load capacity (e.g., radial load >100 KN) requires more raw materials and complex processing, increasing costs. Ultra-small sizes (inner diameter <20 mm) also have higher production difficulty and prices.

Precision grade: P2/P4 high-precision bearings are 40%-70% more expensive than P5 grade. Strict grinding, dynamic balance testing, and precision inspection (e.g., laser interferometry) drive up production costs.

Material quality: Bearings made of SUS440C stainless steel (corrosion-resistant) or ceramic rollers are 50%-80% more costly than conventional GCr15 steel. High-temperature alloy materials for extreme environments (≥150°C) further increase prices.

Structural complexity: Customized flange specifications (e.g., special hole diameter, flange thickness) or sealed structures (UU/U contact seals) add processing steps, increasing costs compared to standard open-type bearings.

Customization requirements: Non-standard size customization, hybrid ceramic roller design, or special lubrication solutions (high-temperature/vacuum) increase design and production costs, raising the unit price by 30%-60%.

Order quantity: Bulk orders (≥300 pieces) enjoy 15%-25% quantity discounts; small-batch (≤50 pieces) or urgent orders (delivery within 10 days) incur additional scheduling and logistics costs.

What Factors Should Be Considered When Purchasing CRBF Crossed Roller Bearing

Operating condition matching: Clarify key parameters such as operating speed (≤2800 rpm for grease lubrication), radial/axial load ratio, moment load, working temperature (-40°C to +150°C), and environmental conditions (dust, humidity). Select open-type (high-speed) or sealed-type (complex environments) accordingly.

Size and precision confirmation: Confirm inner/outer diameter, flange specifications, and precision grade based on equipment drawings. For high-speed cutting or semiconductor equipment, prioritize P2/P4 grade; for general automation, P5 grade balances performance and cost.

Material and sealing selection: Choose GCr15 for general conditions, SUS440C for corrosive environments; select UU contact seals for dusty/humid scenarios, and open-type for high-speed clean environments to reduce resistance.

Supplier qualification assessment: Verify the supplier’s production capacity (e.g., CNC grinding machines, precision measuring equipment), quality certifications (ISO 9001), and after-sales service. Prioritize suppliers with CRBF specialized production experience to avoid assembly errors.

Cost-effectiveness balance: Compare technical indicators (rigidity, speed, life) of different suppliers. Domestic brands like NEWBEE Transmission offer comparable performance to imported brands at 30%-50% lower prices, with more flexible customization support.

Supplier of CRBF Crossed Roller Bearing

NEWBEE Transmission (Luoyang New Bee Transmission Co., Ltd.) is a professional supplier of high-quality CRBF crossed roller bearings, committed to providing efficient, cost-effective solutions for global customers. With advanced R&D and manufacturing capabilities, the company has become a preferred partner in robotics, machine tools, and aerospace industries.

Comprehensive product range: Covers standard CRBF series with inner diameters 10–115 mm, outer diameters 52–240 mm, and cross-section heights 8–28 mm. Precision grades range from P5 to P2, including open-type and sealed-type (UU/U) options.

Advanced manufacturing capabilities: Adopts international advanced CNC grinding machines and laser measuring instruments. Implements strict quality control processes, including roller sorting, raceway precision grinding, and high-speed performance testing, ensuring product consistency.

Customization service advantages: Supports non-standard customization (inner/outer diameter, flange size, mounting hole specifications), ceramic roller hybrid design, and special lubrication solutions for high-temperature/vacuum environments. Provides one-stop technical support from design to delivery.

Reliable quality assurance: Products comply with ISO 9001 and DIN standards, directly replacing imported brands such as IKO. Offers a 1.5-year warranty period and efficient after-sales service, including installation guidance and rapid replacement of defective products.

Cost-effective supply chain: Localized production and optimized raw material procurement reduce costs. Products are 30%-50% more cost-effective than imported alternatives, with stable delivery cycles (7–15 days for standard models).

Precautions for Using CRBF Crossed Roller Bearing

Standardized installation: Use professional tools to avoid damaging the split inner ring or integrated flange. Tighten mounting bolts evenly (follow torque specifications) to prevent flange deformation; ensure the installation surface is flat (flatness ≤0.005 mm) and clean to avoid misalignment.

Scientific lubrication: Apply high-speed or extreme-pressure grease (e.g., lithium-based grease with MoS2 additives) before use. For grease lubrication, replace lubricant every 2000–3000 operating hours; for oil lubrication, ensure continuous oil supply to control temperature rise.

Avoid overload and extreme conditions: Operate within the rated load range (overload >120% may cause roller damage). Avoid sudden start-stop or operation in temperatures exceeding -40°C/+150°C for extended periods, as this shortens service life.

Regular operation monitoring: Monitor operating temperature (normal rise ≤13°C), vibration, and noise. Abnormal phenomena (e.g., excessive temperature rise, harsh noise) indicate insufficient lubrication or misalignment—stop the machine immediately for inspection. - Proper storage and handling: Store in a clean, dry, ventilated environment (humidity ≤60%) to avoid rust. Place horizontally to prevent deformation of the integral outer ring; use shockproof packaging during transportation to avoid collision.

Technical Specifications of CRBF Crossed Roller Bearing

For technical specifications, pricing, or custom engineering solutions:

Email: paul@newbeetrans.com

Website: www.newbeetrans.com