62 Series
Precision ball bearings — deep groove & angular contact · since 2001
Quiet-running bearings for the machines people use every day.
We make 28 million precision motor bearings a year in Cixi, Ningbo — for appliance, motor and power-tool makers in the United States, Europe and the Middle East.
- 3–20 mm bore
- ZV1–ZV4 / EMQ
- SGS RoHS report
- OEM & ODM
NCWY · MOTOR GRADE
6203 deep groove ball bearing
17 × 40 × 12 mm · low-noise motor grade
d17
D40
B12
- SGS RoHSTest report on file
- ISO 9001Documents on request
- CE · SASO · PVOCExport documentation
- GB/T 276 · ISO 15Boundary dimensions
- 28M bearings / yearCixi, Ningbo factory
* ISO 9001, CE, SASO and PVOC documents are available on request. Certificate copies are supplied with export orders.
What we make
Deep groove at the core. Angular contact for higher speeds.
Our factory concentrates on precision deep groove ball bearings from 3 mm to 20 mm bore. Rings are ground and superfinished in-house, then assembled, greased and packed for motor and appliance duty.
We also manufacture angular contact ball bearings in P4, P5 and P6 precision classes for high-speed spindles.
Development work is under way on four-point contact bearings and thin-wall four-point contact bearings, for applications that combine axial and radial loads in a compact envelope.
- GCr15 chrome steel rings, 58–62 HRC
- Steel or nylon cages, ZZ / 2RS / 2RZ closures
- Angular contact P4 / P5 / P6 for high-speed spindles
- Four-point contact and thin-wall four-point contact in development
Product families
Six families, 35 models, one dimension system.
Start from the series that matches your shaft, or search directly by bore, outer diameter and width.
6 models
68 Series
Thin-section miniature bearings
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6 models
69 Series
Thin-section miniature bearings
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5 models
60 Series
Extra-light deep groove
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11 models
62 Series
Light deep groove — motor workhorse
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5 models
63 Series
Medium deep groove
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2 models
Thin-section & Special
Thin-section & self-aligning
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2001
Founded in Cixi, Ningbo
28M
Precision motor bearings a year
3–20 mm
Bore range on this site
ZV1–ZV4
Noise grades plus EMQ / CM
Why NCWY
Quiet running is a manufacturing discipline.
Low noise starts with ring geometry, grinding consistency and controlled assembly — not with a label on the box.
01
Noise-led production
The range is built around appliance and motor applications, with noise grades ZV1–ZV4 and EMQ / CM available to your specification.
02
Volume plus flexibility
28 million bearings a year cover the repeat business; black chamfer, custom grease, special bore and customer marking cover the exceptions.
03
Measured, not guessed
Roundness, profile and surface measurements are part of the process, with the SGS RoHS test report available for compliance files.
04
Export-ready paperwork
OEM packing, labels, material declarations and destination-market documents can be arranged with the order.
Applications
Bearings for appliances, motors and light industry.
The same families run across household appliances, power tools, pumps and small industrial drives.
Household appliances
Washing machines, range hoods, fans, air conditioners, microwave ovens, vacuum cleaners and sewing machines.
6200 · 6201 · 6202 · 6203 · 6001 · 6002Electric motors & fans
Small AC and DC motors, fan and blower assemblies, general reducer motors. Low-noise grades available.
6200 · 6202 · 6203 · 6004 · 6302 · 6800Pumps & fluid handling
Circulation pumps, small water pumps and fluid-handling equipment.
6004 · 6203 · 6302 · 6901Power tools
Drills, grinders, saws and garden equipment where compact bearings carry high speed and vibration.
6001 · 6002 · 6202 · 6203 · 627Automotive & motorcycle
Auxiliary motors, fans and small rotating assemblies in automotive and motorcycle applications.
6201 · 6202 · 6203 · 6002 · 629Office & fitness equipment
Printers, copiers, massage chairs, treadmills and other compact mechanisms.
683 · 685 · 686 · 695 · 696 · 6900 · 6901Textile & agricultural machinery
Textile machinery, agricultural equipment and general industrial drives.
6203 · 6200 · 6004 · 6302 · 6800HVAC & ventilation
Ventilation fans, range hoods and air-handling units where quiet operation matters.
6200 · 6202 · 6203 · 6002 · 6901
ZV1–ZV4noise grades
Quality process
From ring to packed box.
Grinding, superfinishing, assembly, noise control and packing — with measurement points along the way.
- 01Ring grinding
Bore, raceway and face grinding with in-process checks on roundness and dimension.
- 02Superfinishing
Raceway superfinishing to control surface finish — the foundation of low running noise.
- 03Assembly & grease
Matched balls and cages, controlled grease fill, ZZ / 2RS / 2RZ closure.
- 04Noise & packing
Noise and vibration grading, then tube, VCI paper and export carton packing.
The company
A bearing factory in Cixi, Ningbo — under a new name since its founding in 2001.
Founded in 2001 and formerly known as Cixi Chuangwei Bearing Co., Ltd., the company now operates as Zhexing Precision Bearing. The product brand NCWY stays on the bearing, the packing and the paperwork.
- Founded2001
- Output28M
- LocationCixi, Ningbo
- BrandNCWY
Resources
Documents you can send round your team.
Catalogue, SGS report, packing references and the full dimension chart.
Knowledge
Specify with confidence.
Short technical guides on suffix codes, clearance, noise grades and bearing handling.
How to read a deep groove ball bearing suffix code
A full order code packs six decisions into one line: what 6203-2RS/C3 P6 ZV4 says about series, bore, seals, clearance, precision and noise, and why suffix order differs.
Read moreRadial clearance explained: C2, CN, C3, C4 and C5
Why radial clearance decides noise and running temperature in small motors, how C3 differs from the normal group, and the verified ISO 5753-1 ranges up to C5.
Read moreNoise grades for motor bearings: ZV1 to ZV4, EMQ and CM
What ZV1 to ZV4, EMQ and CM actually specify, how bearing vibration is measured, and why grease fill, cage and seal choice change the sound of a motor bearing.
Read moreTell us the model, the quantity and the application.
Send a drawing or a sample request and we will confirm dimensions, lead time and price. Photos and drawings can be uploaded with the inquiry.