NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
A CSF Harmonic Reducer Bearing is a high-precision, thin-walled specialized bearing designed for harmonic reducer systems, featuring an innovative "90° orthogonal rollers + integral quenched raceway" structure. It integrates high rigidity, low torque, and compact design, specifically engineered to match the transmission characteristics of harmonic reducers. This bearing can stably bear radial loads, axial loads, and small overturning moments, while ensuring zero backlash and ultra-low vibration during high-speed operation. It is a core component in precision transmission systems such as industrial robots, medical equipment, and semiconductor machinery.
As a professional harmonic drive bearing manufacturer, NEWBEE Transmission’s CSF Series Harmonic Reducer Bearings, relying on their unique "three-point supported cage" design, achieve anti-centrifugal deformation capability up to 15,000rpm—far exceeding the performance of traditional thin-walled bearings. Moreover, by optimizing the material matching (e.g., ceramic rollers + DLC coating) and lubrication system, these bearings are suitable for extreme working conditions such as strong magnetic fields, clean rooms, and wide temperature ranges (-40℃ to 150℃). As a technical benchmark in the China harmonic drive bearing manufacturing field, they are widely used in high-precision equipment fields with strict requirements for transmission accuracy and service life.
The "90° orthogonal rollers" structure enables even distribution of radial and axial loads. The integral quenched raceway (surface hardness HRC 60-62) and high-strength materials (G20CrNi2MoA carburized steel for rings) provide a load-carrying capacity 30% higher than that of conventional deep groove ball bearings of the same size. The axial stiffness reaches 300N/μm, and radial stiffness reaches 500N/μm, effectively resisting deformation under dynamic loads and ensuring stable transmission.
Through adjustable preload design (preload range ±2N·m), the backlash of the CSF Series is eliminated, and the gear meshing accuracy is indirectly improved. The runout error of the ultra-precision grade (SP4) is controlled within 0.001mm, and the standard grade (P4) runout ≤0.0015mm—meeting the GB Class 4 (equivalent to ISO Class 4) precision requirements. Thanks to NEWBEE Transmission’s ultra-precision grinding process (raceway tolerance ≤0.002mm), the bearing operates without jamming, and the friction torque is as low as <0.05N·m, suitable for high-precision servo drive systems.
The surface of the rollers is coated with a 2μm thick DLC (diamond-like carbon) layer, which reduces the wear rate by 90% and effectively resists fretting wear caused by frequent start-stop cycles. After 2 million start-stop tests, the precision attenuation is less than 5%, and the service life of the solid lubricant (graphene-modified grease) is ≥20,000 hours—doubling the service life compared to ordinary bearings. The gear ring (if equipped) undergoes carburizing and quenching treatment (carburized layer depth 1-3mm), ensuring no plastic deformation on the contact surface during high-speed rotation.
Sealing & Protection: For clean room scenarios (e.g., semiconductor equipment), non-leaching grease meeting NAS 1638 Class 5 standards is optional, avoiding contamination of the working environment. For harsh environments, a metal labyrinth seal structure can be customized, achieving a protection level of IP65.
Wide Temperature & Magnetic Field Resistance: The PEEK composite cage can withstand high temperatures up to 120℃, and the optional titanium alloy lightweight structure is suitable for high-temperature (up to 150℃) and low-temperature (-40℃) environments. Ceramic ZrO₂ rollers have insulating and antimagnetic properties, making them ideal for MRI equipment and strong magnetic field scenarios (e.g., semiconductor ion implanters).
With a cross-section height of only 3-5mm—50% thinner than traditional bearings—the CSF Series greatly saves installation space, facilitating wiring and miniaturization of equipment joints (e.g., robot wrists). It supports multiple customization options:
Structural customization: Inner/outer ring with encoder integration slots, threaded holes for easy installation.
Material customization: Ceramic rollers (ZrO₂) or bearing steel (GCr15) rollers, titanium alloy rings for lightweight needs.
Special treatments: Vacuum MoS₂ coating (enhancing wear resistance), anti-corrosion coatings (for marine or humid environments).
Size range: Inner diameter 15mm-200mm, outer diameter 24mm-220mm, covering most harmonic reducer models (compatible with Harmonic Drive, Shimpo, Lvde, etc.).
With the advantages of zero backlash, high rigidity, and environmental adaptability, CSF Series Harmonic Reducer Bearings are widely used in the following high-precision fields:
Collaborative robot joints (load ≤10kg): The compact design and low torque ensure flexible movement of the robot arm, while zero backlash avoids positioning errors during repeated operations.
SCARA robotic arm rotation units: High-speed anti-centrifugal performance (up to 15,000rpm) adapts to the rapid rotation needs of SCARA robots, and low temperature rise design ensures long-term continuous operation.
Surgical robot wrist mechanisms: The antimagnetic ceramic rollers and clean lubrication system meet the sterility and magnetic field requirements of operating rooms, ensuring precise control of surgical instruments.
Satellite antenna steering mechanisms: The wide temperature range (-40℃ to 150℃) and high rigidity resist orbital temperature changes and micro-vibrations, ensuring accurate positioning of the antenna.
Wafer handling robot θ-axis: The non-leaching grease and high precision (SP4 grade) avoid contamination of wafers and ensure stable transfer of 12-inch wafers.
Lithography machine focus and leveling modules: Ultra-low runout error (≤0.001mm) ensures nanoscale precision adjustment of the lithography lens.
Fuel cell stacking robotic arms: The anti-corrosion coating and high load-bearing capacity adapt to the humid environment of fuel cell production lines, improving stacking efficiency.
Large aircraft electro-optical pod systems: The lightweight titanium alloy structure and low vibration performance reduce the pod’s weight while ensuring clear imaging during flight.
Precision optical instrument turntables: Zero backlash and high stability ensure accurate angle adjustment of optical lenses, suitable for astronomical telescopes and laser measurement equipment.
The price of CSF Series Harmonic Reducer Bearings is affected by the following factors. As a leading enterprise in China’s harmonic drive bearing industry, NEWBEE Transmission can provide cost-effective solutions based on customer needs:
Material Matching: Bearings with ceramic ZrO₂ rollers are 50%-70% more expensive than those with GCr15 steel rollers, due to the insulating and antimagnetic properties of ceramics.
Special Processes: Products using vacuum degassing (to reduce material defects) + ultrasonic flaw detection processes have an additional 25% price increase, which are especially suitable for high-reliability scenarios (e.g., medical equipment).
Surface Treatment: DLC coating adds 15%-20% to the cost, but significantly extends the service life; vacuum MoS₂ coating increases the price by 10%-15%, suitable for lubrication-free scenarios.
Precision Grade: SP4 ultra-precision grade bearings are 30%-40% more expensive than P4 standard grade, due to stricter grinding and testing processes.
Size Range: Bearings with an inner diameter <30mm are relatively cost-effective; for large-size models (inner diameter >100mm), due to the difficulty of ultra-precision machining, the price increases by 50%-80% compared to small-size models.
Environmental Adaptation: IP65-class sealed bearings are 20%-30% more expensive than standard models; non-leaching grease (for clean rooms) adds 15%-25% to the cost.
Structural Customization: Integrating encoder slots or titanium alloy lightweight design increases the price by 35%-50%, as it requires additional machining and material costs.
Special Testing: For customers requiring 200-hour durability test reports or material certification (e.g., aerospace customers), an additional 10%-15% testing fee is required.
Select the appropriate bearing model according to the actual load (radial/axial) and stiffness requirements of the equipment. For example, robot joints with large axial loads should prioritize models with higher axial stiffness (e.g., CSF(G)-50); semiconductor equipment with light loads but high precision should choose ultra-precision grade (SP4) models. As a professional manufacturer, NEWBEE Transmission can provide load simulation software to assist in selection and avoid over-specification or insufficient performance.
Clean Room Scenarios: Priority should be given to bearings with non-leaching grease (NAS 1638 Class 5) and no particle generation (e.g., PEEK cages).
Strong Magnetic Fields: Must select ceramic roller (ZrO₂) models to avoid magnetic interference affecting equipment operation.
Wide Temperature Ranges: For high-temperature (>120℃) environments, customize high-temperature resistant cages (e.g., polyimide materials); for low-temperature (-40℃) scenarios, use low-temperature grease (graphene-modified type).
Choose manufacturers like NEWBEE Transmission that have full-process capabilities including material smelting, heat treatment, and ultra-precision machining. The supplier should provide:
Material reports (e.g., chemical composition of G20CrNi2MoA steel).
Performance test data (runout, friction torque, stiffness).
Quality certification (ISO 9001, ISO 13485 for medical equipment).
After-sales support (installation guidance, failure analysis).
Cost Optimization: Compare quotations from different manufacturers; NEWBEE Transmission’s factory-direct supply model reduces intermediate links, lowering procurement costs by 10%-15%.
Delivery Time: Standard models (e.g., CSF(G)-20, CSF(G)-32) can be shipped within 5-10 days; customized models take 3-5 weeks. For urgent orders, the production cycle can be shortened by 30% through priority scheduling.
NEWBEE Transmission is a leading harmonic drive bearing manufacturer in China and a benchmark enterprise in the country’s harmonic drive bearing industry, with more than 15 years of experience in the CSF Series Harmonic Reducer Bearing field. Its products cover inner diameters from 15mm to 200mm, support ceramic/steel roller options, and can customize special structures such as encoder integration slots and metal seals (module 0.5-3mm gear rings optional).
Relying on imported German ultra-precision grinders, vacuum heat treatment equipment, and ISO 9001/13485 quality management systems, NEWBEE Transmission’s CSF Series Harmonic Reducer Bearings have passed 100% non-destructive testing (ultrasonic + magnetic particle inspection) and 200-hour durability tests. The transmission accuracy and environmental adaptability meet international standards, and they are widely used in industrial robots, semiconductors, and medical equipment fields. As an export-oriented enterprise, its products are sold to Europe, America, and Japan, and have obtained recognition from well-known equipment manufacturers.
For detailed parameters (e.g., load charts, dimension drawings) or performance test reports of the CSF Series, you can contact the technical team directly.
For the latest price of CSF Harmonic Reducer Bearings, customized solutions for harmonic drive systems, or technical information about clean room bearings, please contact NEWBEE Transmission, a high-quality supplier of China harmonic drive bearings:
Email: Tom@newbeetrans.com
Official Website: www.newbeetrans.com
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sales@newbeetrans.com
+8615090185276