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NINGBO GIANT BEARINGS MANUFACTURING CO.,LTD

NINGBO GIANT BEARINGS MANUFACTURING CO.,LTD
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NINGBO GIANT BEARINGS MANUFACTURING CO.,LTD

Product catalog summary
Company Overview: DEMY (D&M) Bearings Co., Ltd. is a prominent Chinese manufacturer and exporter of ball and roller bearings, offering over 12,000 specifications across various types and precision classes. Their products serve industries such as railway, automobile, metallurgical, petrochemical, and military, with a strong presence in North & South America, Southeast Asia, and Europe.
Product Specifications: The company provides a diverse range of bearings, including Deep Groove Ball Bearings, Angular Contact Ball Bearings, Thrust Ball Bearings, Self-Aligning Ball Bearings, Tapered Roller Bearings, Cylindrical Roller Bearings, Spherical Roller Bearings, Needle Roller Bearings, Track Rollers, and Slewing Bearings. Each type is tailored to specific load capacities and application needs.
Quality and Standards: DEMY Bearings complies with ISO9001:2000 standards, focusing on high-grade, precision products using advanced technologies. Their long-term commitment is encapsulated in the principle of "Quality first, Credit first, and Service first" to ensure customer satisfaction.
Key Product Features:
  • Deep Groove Ball Bearings: Designed for radial and moderate axial loads, offering low friction and high-speed capabilities.
  • Angular Contact Ball Bearings: Support both radial and axial loads, often used in pairs for preload convenience.
  • Tapered Roller Bearings: Handle combined loads with adjustable radial and axial clearances.
  • Cylindrical Roller Bearings: Feature separable components with high radial load capacity, ideal for electric motors and transmission shafts.
  • Spherical Roller Bearings: Self-aligning with high radial load capacity, suitable for heavy machinery.
Specialty Bearings: DEMY also manufactures specialty bearings like Ceramic and Stainless Steel Bearings, known for corrosion resistance, high load capacity, and suitability for extreme temperatures.
Materials: The primary materials for rings and balls include SUS440C, SUS440B, SUS304, and SUS316 stainless steels. Retainers are made from SUS304, SUS316, phenolic resin tube, and PA66, with nitrile rubber used for seals.
Properties: The document details material properties such as color, density, hardness, toughness, bending strength, heat impact, coefficient of expansion, maximum usage temperature, corrosion resistance, thermal conductivity, fatigue life, magnetism, insulation, indentation strength, impact strength, Weber modulus, modulus of elasticity, Poisson ratio, resistivity, specific resistivity, specific heat, number of stress cycles, destruction model, and dimensional stability.
Material Properties Comparison: A comparison of ceramic materials like ZrO2, Si3N4, SiC, and 99Al2O3 is provided, highlighting their respective properties.
Special Bearings: The document mentions various special bearings and their series, including rod-end and linear bearings, with specific models like GF, SAB F/K, SIB F/K, and others.
Balls & Rollers: Information on balls and rollers is provided, detailing materials such as ceramic, PTFE, glass, PP, POM, and various steels, with grades ranging from G10 to G1000.
Contact Information: Detailed contact information for DEMY's offices and factories in Ningbo, China, is included, with phone numbers, fax numbers, email addresses, and website URLs.
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Catalog excerpts

NINGBO GIANT BEARINGS MANUFACTURING CO.,LTD-2

DEMY(D&M) BEARINGS CO.,LTD. CONTENTS DEMY (D&M) BEARINGS CO.,LTD. is one of leading ball & roller bearing manufacturers & exporters in China. It is specialized in research and development for various kinds of high precision non-noise,long-life bearings. We can produce more than 12000 specifications of general and special bearings with 9 types and 5 precision classes according to international standard,national standard and customer requirements,whose ID ranges are from 5 mm to 6300 mm. Meanwhile,we produce precision ball screws, C. V. Joints Slewing bearings and etc. We h a v e b e e n s u p...

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NINGBO GIANT BEARINGS MANUFACTURING CO.,LTD-3

DEMY(D&M) BEARINGS CO.,LTD. Deep Groove Ball Bearings DEMY(D&M) BEARINGS CO.,LTD. Deep Groove Ball Bearings Deep groove ball bearings mainly take radial load as well as take moderate axial load. With less coefficient of friction,high limiting speed.large size range and varations of structure,they are suitable for precision instruments,low noise motors,automobiles,motorcycles,and other common machinery,as a widely used Variant structure type of bearings in machinery industry. Low friction torque High speed Sealed grease lubrication Dustproof Bore Series Diameter Variant structure Miniture bearings...

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NINGBO GIANT BEARINGS MANUFACTURING CO.,LTD-4

DEMY(D&M) BEARINGS CO.,LTD. DEMY(D&M) BEARINGS CO.,LTD. Angular Contact Ball Bearings Angular contact ball bearings are able to row angular contact ball bearings can only Double row angular contact Double Row Angular Contact Ball Bearings Single Row/Duplex Angular Contact Ball Bearings support radial load and axial load. As single Angular Contact Ball Bearings ball bearings are a form of for them is more convenient. rings, which support axial Load direction Retainers are made of brass,synthetic r- back- to -back pairs of single Contact angle ed bearing mounting is often adopted to them. As matched...

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DEMY(D&M) BEARINGS CO.,LTD. DEMY(D&M) BEARINGS CO.,LTD. Self-aligning Ball Bearings Thrust Ball Bearings With two structures of bore cylindrical or tapered and retainers made of steel sheet or synthetic resins, This type of bearings is separable,which can only carry the bearings are characteristic of their spherically for- axial load. The single direction bearings of them can only med outer ring raceways allowing for misalignment carry axial load in one direction,while the double can carry within 3 deflection between inner ring and outer ring, Bore Diameter are suitable for machine tool spindles,while...

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NINGBO GIANT BEARINGS MANUFACTURING CO.,LTD-6

DEMY(D&M) BEARINGS CO.,LTD. Tapered Roller Bearings DEMY(D&M) BEARINGS CO.,LTD. Tapered Roller Bearings Metric Series Bore Diameter Inch Series Outside Diameter to support combined load mainly consisting of radial load. Their cups are separable for easy assembling. During mounting and using,radial clearance and axial clearance can be adjusted and preloaded mounting can be made. Inch Series Bore Diameter Metric Series Tapered roller bearings are generally used Outside Diameter DEMY(D&M) BEARINGS CO.,LTD. 08 DEMY(D&M) BEARINGS CO.,LTD. 09

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NINGBO GIANT BEARINGS MANUFACTURING CO.,LTD-7

DEMY(D&M) BEARINGS CO.,LTD. DEMY(D&M) BEARINGS CO.,LTD. Cylindrical Roller Bearings This type of bearings is separable. As Cylindrical Roller Bearings Bore Series Diameter Variant structure inner ring and outer ring with less coefficient of friction,these bearings have very good capacity of radial load,suitable for electric their rollers linearly come into contact with motors,automobiles,transmission shafts, gear shafts and so on.Double row cylindrical roller bearings are good at the spindles of machine tools. DEMY(D&M) BEARINGS CO.,LTD. 10 DEMY(D&M) BEARINGS CO.,LTD. 11

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DEMY(D&M) BEARINGS CO.,LTD. DEMY(D&M) BEARINGS CO.,LTD. Spherical Roller Bearings With the same center as the bearing, Bore Series Diameter the spherically formed outer ring raceway can make selfalignment . Their rolling Spherical Thrust Roller Bearings Variant structure The rollers of these bearings are of spherical ements linearly come into contact with the shape, and the spherical raceway surface of the raceways of inner ring and outer ring. The housing washer is selfaligned. These bearings are featured by the extremely big axial load carrying capacity and meanwhile they can also carry cetrain...

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DEMY(D&M) BEARINGS CO.,LTD. DEMY(D&M) BEARINGS CO.,LTD. Needle Roller Bearings Track Rollers Machined Type Needle Bearing Machined Type Needle Bearing Without Inner Ring Series RSTO Structure description Yoke type track roller without axial guidance,without inner ring,outer ring without ribs Curve roller radically guided by the retaininig edge and ring,full complement Curve roller ,axial guided by rib and washer,full complement needle roller set,with lip seals on both sides Curve roller with eccentric sleeve,full complement Curve rollerwith eccentric sleeve and retaining sleeve,full complement...

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DEMY(D&M) BEARINGS CO.,LTD. DEMY(D&M) BEARINGS CO.,LTD. Slewing Bearings Automobile Bearings Auto Wheel Hub Bearing & Hub Units Single row four point contact ballslewing bearing can be separated by inner gear,outer gear,cylindrical roller slewing can be separatede by(single row,double rows, three rows). This kind of bearing have the features of high rigid and reliable running and apply for mining,metallurgy,harbor and petroleum segments. Bore Diameter Bearing Code Variant structure Seal Type A Seal Type B DAC Series Air-condition Bearing DEMY(D&M) BEARINGS CO.,LTD. 16 DEMY(D&M) BEARINGS CO.,LTD....

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NINGBO GIANT BEARINGS MANUFACTURING CO.,LTD-11

DEMY(D&M) BEARINGS CO.,LTD. DEMY(D&M) BEARINGS CO.,LTD. Automobile Bearings Automobile Bearings Clutch Release Bearing Water Pump Bearing DEMY(D&M) BEARINGS CO.,LTD. 18 DEMY(D&M) BEARINGS CO.,LTD. 19

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NINGBO GIANT BEARINGS MANUFACTURING CO.,LTD-12

DEMY(D&M) BEARINGS CO.,LTD. DEMY(D&M) BEARINGS CO.,LTD. Agricultural Bearings Bearing Units DEMY(D&M) BEARINGS CO.,LTD. Agricultural Bearing with Hex Core Agricultural Bearing with Quadrilateral Core Agricultural Bearing with Circular Core DEMY(D&M) BEARINGS CO.,LTD. 21

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DEMY(D&M) BEARINGS CO.,LTD. DEMY(D&M) BEARINGS CO.,LTD. Ceramic Bearings Deep groove ball bearings Angular contact ball bearings Thrust ball bearings Stainless Steel Bearings Self-aligning ball bearings Deep groove ball stainless bearings Self-aligning ball stainless bearings Spherical bearings Angular contact ball stainless bearings Full ceramic bearing has perfect propriety such like suitable for low and high temperatures, Thrust ball stainless bearings high load capacity.corrosion resistance.nonmagnetic insulated and self lubrication. Thus it suit for the specific applicatioins which are not...

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