Specialises in manufacturing precision bearings

Precision Miniature Bearing Manufacturer

We provide precision bearings and application support for motors, drones, smart robots, smart home appliances, and other high-demand industries worldwide.

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Custom Precision Bearings Solutions & Technical Support

Tailored precision bearings solutions for your equipment and working conditions. Send us your drawings, model, or technical requirements.

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KET Precision Bearings specialises in manufacturing various precision micro bearings

One-stop precision bearings customization solution

18＋ years of professional experience with precision bearings. Providing components compatible with original manufacturers, as well as customized support for the global industrial and maintenance markets.

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18+ Years of Expertise

Fast support for precision bearings

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300+ Types of bearings

Specializes in producing precision bearings, with an annual output of 100 million pcs

ket precision bearings global supply

Exported to 50+ Countries

Supplying reliable precision bearings to global distributors, OEMs and repair markets

Our products

High-quality precision bearings suitable for various applications

KET Bearing offers a comprehensive range of precision bearings, designed and manufactured to the highest quality standards to meet diverse industrial needs.
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Deep Groove Ball Bearing 10-20mm

Deep Groove Ball Bearing 10-20mm

KET has launched a series of precision deep groove ball bearings with inner diameters of 10-20mm, filling the crucial size gap between miniature bearings (1-9mm) and medium-sized bearings. This series continues KET’s tradition of high-precision manufacturing, combining a compact design with higher load capacity, making it an ideal core for power transmission in areas like industrial automation, power tools, smart home devices, and automotive assist systems.

Inch Flange Bearing

Inch Flange Bearing

KET has just launched a brand-new series of inch-flanged bearings, using the imperial size system (inner diameter, outer diameter, and width all measured in inches). They were designed to meet the needs of North America, Europe, and other parts of the world that use imperial standard equipment. This series builds on miniature deep groove ball bearings by adding a radial flange design, allowing for direct mounting via the flange edge without needing an extra bearing housing.

Metric Miniature Bearings 1-9mm

Metric Miniature Bearings 1-9mm

The KET metric miniature bearing series is specially designed for precision tiny devices with inner diameters from 1mm to 9mm, and it’s a core product line of KET. This series covers internationally common models like the 68 series, 69 series, 60 series, and MR series, fully meeting the needs for high-precision, low-noise, long-life miniature bearings in micro motors, precision instruments, medical equipment, office automation, home appliances, personal care products, and more.

Inch miniature bearing

Inch miniature bearing

KET has just launched a brand-new series of inch-sized miniature bearings, using the imperial measurement system (inner diameter, outer diameter, and width all in inches), fully covering the internationally common R-series miniature deep groove ball bearing specs. This series sticks to KET's usual high standards of precision, low noise, and long life, and can be directly swapped with similar products from European and American brands like NMB, MRC, SKF, FAG, and more. It's a perfect choice for repairing imported equipment, matching export equipment, and global sourcing.

HF Series One-Way Needle Bearings

HF Series One-Way Needle Bearings

The KET HF series one-way needle roller bearings (also known as one-way clutches or overrunning clutches) feature a stamped outer ring design, with a special internal structure that combines needles, springs, and ramp tracks. They allow smooth rotation in one direction and instant locking in the other, giving precise control. These bearings are compact, strong, and responsive, making them ideal core components for one-way movement, reverse prevention, and indexing in office automation equipment, financial terminals, home appliances, power tools, and automotive assist systems.

HK Series Needle Bearings

HK Series Needle Bearings

The KET HK series needle roller bearings are a type of stamped outer ring needle bearing, featuring a precision-stamped outer ring and a complete assembly of needles and cage inside. These bearings stand out for their small radial cross-section, high load capacity, and compact design, providing strong radial support in limited spaces. Unlike the HF series (one-way clutches), the HK series rotates freely in both directions and is specially designed for high-precision, low-friction rotational support under pure radial loads. They are widely used in cars, industrial machinery, home appliances, and office equipment.

Thrust Roller Bearing

Thrust Roller Bearing

KET thrust roller bearings are precision rolling bearings specifically designed to handle axial loads. They can withstand large one-way or two-way axial forces and are suitable for low-speed, heavy-duty conditions. This series includes four main types: thrust cylindrical roller bearings, thrust tapered roller bearings, thrust spherical roller bearings, and thrust needle roller bearings. They are widely used in heavy machinery, industrial equipment, construction machinery, and automotive transmission systems. Thrust roller bearings use line contact rolling elements, giving them a load capacity far beyond that of thrust ball bearings of the same size. They also feature high rigidity and take up minimal axial space, making them an ideal choice for heavy-duty axial positioning.
PRODUCTS

Popular Bearing Products

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KET 601X / 601XZZ Metric Miniature Ball Bearing

KET 601X / 601XZZ Metric Miniature Ball Bearing

KET 601X / 601XZZ Metric Miniature Ball Bearing (1.5x6x2.5mm) - High-Load Precision Micro Bearing

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KET 691X / 691XZZ Metric Miniature Ball Bearing

KET 691X / 691XZZ Metric Miniature Ball Bearing

KET 691X / 691XZZ Metric Miniature Ball Bearing (1.5x5x2mm) - Ultra-Precision Micro Bearing

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KET 681X / 681XZZ Metric Miniature Ball Bearing

KET 681X / 681XZZ Metric Miniature Ball Bearing

KET 681X / 681XZZ Metric Miniature Ball Bearing (1.5x4x1.2mm) - Ultra-Precision High-Speed Micro Bearing

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KET 691 Metric Miniature Ball Bearing

KET 691 Metric Miniature Ball Bearing

KET 691 Metric Miniature Ball Bearing (1x4x1.6mm) - Ultra-Precision Micro Bearing

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KET 6001 Deep Groove Ball Bearing

KET 6001 Deep Groove Ball Bearing

KET 6001 Deep Groove Ball Bearing (12x28x8mm) - High-Speed & High-Load Precision Metric Bearing

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KET 6002 / 6002ZZ Deep Groove Ball Bearing

KET 6002 / 6002ZZ Deep Groove Ball Bearing

KET 6002 / 6002ZZ Deep Groove Ball Bearing (15x32x9mm) - High-Load Precision Metric Bearing

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KET 6003 / 6003ZZ Deep Groove Ball Bearing

KET 6003 / 6003ZZ Deep Groove Ball Bearing

KET 6003 / 6003ZZ Deep Groove Ball Bearing (17x35x10mm) - High-Speed Precision Metric Bearing

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KET 6701 Deep Groove Ball Bearing

KET 6701 Deep Groove Ball Bearing

KET 6701 Deep Groove Ball Bearing (12x18x4mm) - Thin Section Precision Bearing

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Application

UAV
01

UAV

KET Precision Bearings for UAV brushless motors, optical pods, and gimbals. Engineered to ABEC-5/ABEC-7 precision, offering high RPM stability, ultra-low friction, and extended flight endurance. Popular Models: MR105ZZ, MR148ZZ, 684ZZ, 685ZZ, 688ZZ, 693ZZ, and Ceramic Hybrid Series.

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Smart Home Appliances
02

Smart Home Appliances

KET Precision Bearings for smart home appliances, including robot vacuums, air purifiers, BLDC fans, and kitchen processors. Engineered to Z3/Z4 low-noise grades, offering high energy efficiency and ultra-quiet, long-life performance. Popular Models: 608ZZ, 688ZZ, 626ZZ, 696ZZ, 6000ZZ, 6201-2RS, and Ultra-Quiet Series.

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Industrial Robot
03

Industrial Robot

KET Precision Bearings for industrial robots, articulate arms, AGVs/AMRs, and joint reducers. Engineered for high rigidity, high rotation accuracy, and compact load capacity to ensure precise movement and long-term reliability. Popular Models: RU66, RB5013, CRBH508, 6810ZZ, 6812ZZ, 7005AC, and Harmonic Drive Flexible Series.

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Machine Tool
04

Machine Tool

KET Precision Bearings for CNC machine tool spindles, ball screw support systems, linear motion drives, and rotary indexing tables. Engineered to P4/P2 (ABEC-7/ABEC-9) precision grades with high rigidity, extreme speed capability, and minimal runout for high-precision machining. Popular Models: 7000/7200 Series, 71900 Series, TAC Ball Screw Series, NN3000 Series, and YRT Rotary Table Series.

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Automobile Industry
05

Automobile Industry

KET Precision Bearings for the automotive industry, including EV drive motors, electronic power steering (EPS), alternators, cooling fans, and wheel hubs. Certified to automotive standards, engineered for extreme temperatures, high speeds, and long service life. Popular Models: 6202-2RS, 6203-2RS, 6206-2RS, 6308-2RS, DAC3564, and EV Ceramic Hybrid Series.

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Office Equipment
06

Office Equipment

KET Precision Bearings for office automation equipment, including laser printers, copiers, scanners, 3D printers, and shredders. Engineered for ultra-quiet operation, low starting torque, and superior dust resistance to ensure smooth paper handling and precise motion. Popular Models: 608ZZ, 625ZZ, 688ZZ, MR106ZZ, F688ZZ (Flanged), and Miniature Series.

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Motor
07

Motor

KET Precision Bearings for industrial electric motors, including AC/DC motors, servo drives, steppers, and high-speed BLDC motors. Engineered to Z3/V3 low-noise and low-vibration standards, delivering high dynamic load capacity and energy-efficient rotation. Popular Models: 6201-2RS, 6202-2RS, 6203-2RS, 6204-2RS, 6205-2RS, 608ZZ, and Servo Precision Series.

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Motorcycle
08

Motorcycle

KET Precision Bearings for motorcycles, e-scooters, and ATVs. Specialized for wheel hubs, engine crankshafts, transmissions, and steering stems. Engineered with advanced sealing, optimized clearances, and high dynamic load capacities for superior shock resistance and all-weather durability. Popular Models: 6202-2RS, 6203-2RS, 6204-2RS, 6304-2RS, 6004-2RS, and Steering Tapered Roller Series.

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Fitness Equipment
09

Fitness Equipment

KET Precision Bearings for commercial and home fitness equipment, including treadmills, spin bikes, ellipticals, and rowing machines. Engineered for ultra-quiet operation, heavy dynamic load capacity, and sweat-resistant sealing to deliver a smooth, maintenance-free workout experience. Popular Models: 608ZZ, 6201-2RS, 6202-2RS, 6203-2RS, 6204-2RS, and Pulley Bearing Series.

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Medical Devices
10

Medical Devices

KET Precision Bearings for critical medical devices, including surgical robots, CT/MRI scanners, dental handpieces, and laboratory centrifuges. Engineered for ultra-high speeds, zero-backlash precision, and biocompatible reliability. Popular Models: SR144, S684ZZ, S6806-2RS, CRBH Series, Thin Section, and Non-Magnetic Ceramic Hybrids.

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UAV
01

UAV

Smart Home Appliances
02

Smart Home Appliances

Industrial Robot
03

Industrial Robot

Machine Tool
04

Machine Tool

Automobile Industry
05

Automobile Industry

Office Equipment
06

Office Equipment

Motor
07

Motor

Motorcycle
08

Motorcycle

Fitness Equipment
09

Fitness Equipment

Medical Devices
10

Medical Devices

WHY CHOOSE US

Why Partner with KET Bearings?

ket Precision Bearings Ningbo Kexiang Bearing Technology Co., Ltd. provides solutions for customers

Application-Specific Technical Support

Our team helps recommend suitable brearings based on your application, working conditions and technical requirements.

KET precision bearings professional dust-free automated production workshop

Fast Response & Quotation

We respond quickly to global inquiries, helping buyers confirm product compatibility, specifications and quotations with efficient technical support.

KET precision bearings Professional automated production machinery

Flexible Production Capacity

Flexible MOQ support for samples, replacement orders and bulk projects, backed by stable production capacity and reliable delivery.

ket Precision Bearings Global Shipping Supply

Global Export Support

Exported to 50+ countries, we support distributors, OEMs and repair markets with responsive communication, documentation and after-sales assistance.

TECHNICAL DOWNLOADS

Download Precision Bearings Product Catalogues

Access product Precision Bearings. Download the catalogue you need to support product selection, replacement and project planning.
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KET Precision_Bearings_Product_Catalogues
Precision Bearings factory
About KET Bearings

Precision Bearings Manufacturer & Supplier

With 18 years of precision bearing industry experience, KET manufactures and supplies deep groove ball bearings, needle bearings, flange bearings and thrust ball bearings for micro motors, medical equipment, precision instruments and global household appliance markets. From standard 1-20mm micro bearings to custom non-standard bearing solutions, our team supports distributors, OEM customers and project buyers with reliable products, complete application technology services and supply chain management.
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Our Partners

Trusted by global industry leaders

Become a Partner
KET Precision Bearings' Partner DJI
KET Precision Bearings' Partner TENON
KET Precision Bearings' Partner AIRQUALITY
KET Precision Bearings' Partner Jinba Intelligent Technology CO Ltd
KET Precision Bearings' Partner WEIZHEN MOTOR
KET Precision Bearings' Partner BYD
KET Precision Bearings' Partner Dong Cheng
KET Precision Bearings' Partner Nidec
KET Precision Bearings' Partner UNITE MOTOR
KET Precision Bearings' Partner DJI
KET Precision Bearings' Partner TENON
KET Precision Bearings' Partner AIRQUALITY
KET Precision Bearings' Partner Jinba Intelligent Technology CO Ltd
KET Precision Bearings' Partner WEIZHEN MOTOR
KET Precision Bearings' Partner BYD
KET Precision Bearings' Partner Dong Cheng
KET Precision Bearings' Partner Nidec
KET Precision Bearings' Partner UNITE MOTOR
Certification

Committed to Quality and Compliance

KET bearings have obtained ISO9001 certification and have passed multiple quality audits and product testing certifications. Our standards ensure high performance, durability, and safety across all service markets.
KET Precision Bearings Zhejiang Province Technology-based SME Certificate

Zhejiang Province Tech SME Certificate

KET Precision Bearings ISO 9001 Certificate

ISO 9001

KET Precision Bearings 25.SGS Certificate

KET 25.SGS

KET Precision Bearings 25.SGS Certificate

KET 25.SGS

ket Precision Bearings High-tech Enterprise Certificate

High-tech Enterprise Certificate

KET Precision Bearings ISO 9001 Certificate2

KET IS9001 System

KET precision bearings IATF16949 certificate

KET IATF16949 Certificate

FAQ

Customized precision solutions for industrial applications. OEM/ODM support.

Can you customize bearings for specific industry applications?

Yes, absolutely. In addition to our standard product lines, we can customize various non-standard bearings exactly according to customer requirements and technical drawings.

What is your minimum order quantity (MOQ)?

Our MOQ is typically 100 pieces for standard bearings. For custom bearings, MOQ may vary depending on specifications.

How long is the delivery time?

Standard bearings: 3-7 days. Custom bearings: 15-25 days. Express shipping available for urgent orders.

How do you guarantee the quality of your bearings?

Quality is our core focus. Our factory operates under strict quality management systems and holds the ISO9001 Quality Management System Certificate. We also utilize highly advanced production and testing equipment, including automatic noise tests, automatic bore tests, roundness instruments, spectrometers, and bearing life testing machines to ensure every batch meets global standards.

What certifications do your products and factory hold?

Quality is our priority. Our factory is certified with ISO9001 and IATF 16949 Quality
Management Systems. We are recognized as a High-Tech Enterprise, and our bearings
pass strict SGS (RoHS/SVHC) testing.

Do you provide after-sales support?

Yes. We provide technical assistance and responsiveafter-sales service for Precision bearing, including product selection,installation questions and replacement support.

Следите за нашими отраслевыми новостями

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