Solution Description

Deep groove ball bearing 6903-2rs


These radial ball bearings can withstand minimal to weighty radial loads and low to CZPT thrust hundreds in the two loading directions.

Offered in open up, non-make contact with shielded (ZZ) and get in touch with shielded (2RS) variations.

We have extensive shares of ball bearings masking most types and brands, bearings to match people buying for overall performance, or these with much less demanding demands and who are looking to minimise bearing commit.

Ball bearings consist of 2 bearing rings divided by a amount of balls.

  • Available in a enormous assortment of measurements from 3mm to 1500mm bore (and larger to specific order)
  • Non separable open up and sealed designs
  • Cages types range but incorporate steel, ceramic, plastic and brass cage designs
  • Can be suitable for higher speeds
  • Can accommodate radial and axial masses in each instructions

We have huge shares of inch and metric ball bearings of all designs and in most key manufacturers, supplemented by our possess China brand.



ZheJiang CZPT Bearing can offer you with the broadest possible array of bearings. In addition to Ball bearing, Roller bearing, Needle bearing, Pillow Blocks, we manufacture Flange blocks, Rolling mill bearing, Slide bearing and Water pump bearing. Our unparalleled experience as a complete company and exporter for these industries is crucial for the improvement and application of a leading product line for all common industries.

We pride ourselves on our CZPT to provide every single customer, from yard mechanics, to independent store owners, to automotive specialists, to big production crops. Our Focus on Industries served are Agricultural Equipment, Cranes, Electrical Motors, Gearboxes, Substance Dealing with, Packaging Machinery, Electrical power Instruments, Pumps, Railways and Transportation, Robotics, and products for Textile Equipment. ZheJiang Bearing Business is a stronger and growing exporter of bearing in China.

In addition to manufacturing commodity-primarily based bearing merchandise, CZPT Bearing makes custom made bearing remedies for OEM. ZheJiang CZPT bearing has stringent high quality handle expectations and maintains total management over supply, making use of only the maximum grade bearing steel.

Our mission is to entirely provide for you. Nicely into our more than 10 many years of organization, we are assured that you may locate what you're seeking for in bearing merchandise below. Please call, e mail, or quit by for far more info.

We are extremely self-assured in our products, and we are certain that we can earn your trust!



Kinds of Ball Bearings

Present day ball bearing configurations have different resources and geometries to fulfill the requires of various operating environments and apps. There are distinct kinds of ball bearings: solitary row deep groove, double-row deep groove, angular contact ball bearing, thrust, and self-aligning. Allow us appear at the variances between each variety and discover why they are crucial for various needs. Outlined under are some of the most common types of ball bearings.

Miniature bearings

Although miniature ball bearings are a well-known selection for modest mechanical elements, they are not with out their problems. They have to be appropriately lubricated and stored in thoroughly clean rooms. A strand of hair could ruin a miniature bearing. The good news is, makers offer lubrication providers and a "Clear Space" for clients to keep their miniature bearings properly. Study on to learn far more about these small bearings and how they can assist you.
The measurement of a miniature ball bearing can fluctuate substantially, but most varieties of these units are offered in measurements ranging from.040 inch to a single eighth of an inch. Whether or not you need a modest ball bearing for a miniature auto or a little instrument, a miniature bearing can conserve room whilst still offering higher overall performance. Several of these bearings are shielded to avoid filth from moving into and leakage of lubricant. They can be flanged or unflanged, and some miniature ball bearings have extended internal rings that are made for effortless plate mounting.
Miniature ball bearings are typically made from stainless metal or chrome metal. The two metals have their advantages. Stainless steel is the most popular material for ball bearings, which allows for a high load potential even though becoming peaceful. Because stainless steel is relatively low-cost, a lot of small instrument bearings are created fully of stainless steel. The variation in price tag is small, as the amount of metal is fairly tiny. Stainless steel miniature bearings are the smallest and lightest of all types of miniature ball bearings.

Self-aligning ball bearings

In the most straightforward terms, self-aligning ball bearings are ball bearings with flex shafts. If you might be looking for a ball bearing with a high diploma of precision, you are going to want to choose one particular with a flex shaft, which indicates it can alter to the suitable orientation of the bearing's flex shaft. Ball bearings with flex shafts are also advised. But, what are these bearings?
Self-aligning ball bearings are created with two rows of balls and a widespread sphered raceway on the outer ring. As a outcome, they can accommodate tiny mistakes in shaft alignment and mounting. The CZPT brand name is specifically suited for substantial-speed purposes necessitating greater operating accuracy. The self-alignment system is enabled by the truth that the balls are positioned in two rows on possibly side of the sphered raceway in the outer ring. These two rows of balls also market decreased friction and use.
Another type of self-aligning ball bearings is a double-row layout. They function a frequent sphered raceway on the outer ring, a hollow spherical ring, and a cage that rotates relative to it. A self-aligning ball bearing is used in purposes in which shaft misalignment is a problem, these kinds of as conveying equipment. They are also utilized in basic woodworking machinery and ventilators.

Ceramic ball bearings

Ceramic ball bearings have several advantages above steel or metal bearings. These incorporate increased acceleration capability, lowered friction, improved wear-resistance, and larger speeds. The United States retains the leading situation in the international ceramic ball bearings market thanks to a rebounding motor vehicle creation and wholesome fixed expenditure setting. In the United States, there are 3 main markets for ceramic ball bearings: health care, automotive, and aerospace. Here are the primary advantages of ceramic ball bearings:
Hybrid ball bearings are also accessible. Hybrid bearings attribute classic metallic rings and silicon nitride (ceramic) balls. Hybrid bearings offer you crucial efficiency rewards more than all-metal bearings, and they are far more cost-effective. Even so, entire ceramic ball bearings have all ceramic parts, and are greatest suited for devices that require higher precision. These types of bearings also resist corrosion and put on.
Compared to steel ball bearings, ceramic balls are lighter than metal. They are also much less dense, which indicates much less friction and therefore considerably less heat. Additionally, ceramic balls operate at larger speeds than metal balls, which increases their longevity and longevity. But they are nonetheless not as strong as metal bearings. And simply because of their lowered density, they are a lot cheaper to manufacture. For that reason, they are an exceptional option for several apps. You can expect them to previous considerably more time than steel bearings.

Metal carbon ball bearings

Large precision G25 ball bearings are made of the optimum quality chrome metal and very hot cast from bar stock. Statistical method manage and exacting atmospheres support make certain uniform hardness and microstructure. Additionally, these bearings are of the maximum quality, with wonderful surface area complete and a limited tolerance. This makes them the most widely utilized and reliable selection for industrial and automotive purposes. Even so, there are some concerns that should be taken into account just before obtaining a steel carbon ball bearing.
Normally, AFBMA quality 200 is the regular hardness specification for this materials. AFBMA quality 100 can also be acquired with great difficulty. Even with the high hardness of steel carbon ball bearings, their outer surface is just a skinny hardened shell, so a specific micro hardness check is necessary to assess them. In addition to the hardness, steel balls are very easily machined and floor. Some producers even supply stainless metal ball bearings and ball sets.
Another element that can make steel carbon ball bearings so useful is their precision. They can give exact measurements, which tends to make them best for minimal and medium-pace apps. Owing to their substantial precision and toughness, metal carbon ball bearings can be utilised in numerous programs, from conveyor machines to roller skates. Nonetheless, you ought to be conscious that the material employed to generate these bearings is not suited for apps in which they are uncovered to h2o and gases. More, they are also noisy and large, and must be set up effectively in a manufacturing setting.

Stainless steel ball bearings

Stainless steel ball bearings are produced from a higher-quality variety of stainless steel, 440C, which provides optimum corrosion and abrasion resistance. These bearings are also durable and rust-free of charge, and are appropriate for a range of programs. Amongst other individuals, stainless metal ball bearings are utilized in beverage and meals processing plants, prescribed drugs, pulp and paper mills, maritime environments, and freezers.
Stainless steel bearings are accessible in numerous grades. For example, AISI 440C provides corrosion resistance, although the DD400 is especially created for maritime purposes. Each kinds of stainless metal are obtainable in diverse forms, like open, shielded, and sealed. Stainless steel ball bearings can also be customized-created, as BL is identified for producing custom-made bearings. There are also other supplies that are available.
AISI variety 316 stainless metal balls are best for marine apps and foods processing. They have outstanding resistance to most organic supplies and are also employed in medical units and dispenser pumps. They are also strong ample to resist several petroleum goods and are broadly utilized in health care gear and beauty purposes. In addition, stainless steel balls can be plated to give an additional layer of security against chemical substances. To understand how they differ, let's take a search at some common sorts of stainless steel ball bearings.

Stainless metal

Stainless metal ball bearings can be utilized in various programs. Aside from getting corrosion resistant, they also last lengthier thanks to the Molded-Oil lubrication technologies. Stainless metal ball bearings are cleanse models, which saves time and funds in conditions of upkeep, substitution, and downtime. But what are the positive aspects of stainless steel ball bearings? Permit us go over these rewards. Also, we will examine their rewards and negatives.
Stainless steel ball bearings offer notable advantages, including corrosion resistance, increased power, and improved steadiness below substantial temperatures. These attributes make them the ideal option for specific circumstances and demanding environments. However, you should be mindful when picking stainless metal bearings. There are numerous different kinds of stainless metal. This is a quick seem at what can make them the ideal option. And bear in mind: Stainless steels are also recyclable. In fact, they can be recycled indefinitely.
They're manufactured from chrome alloy electric furnace metal, which is hardened for ideal services life and power. They have the optimum surface finish and dimensional accuracy. Innovative warmth-managing processes increase their toughness and anti-cracking abilities. And thanks to their exclusive materials, they're corrosion-resistant. As a consequence, they are a lot more resilient than other types of bearings. And considering that they are created with a large-good quality metal, you may preserve funds in the extended operate.

Plastic ball bearings

Plastic ball bearings were developed to meet the particular wants of applications in which normal steel bearings would fail. Metal and 440C stainless metal are the two prone to rusting when exposed to h2o, making them poor options for apps involving foods processing, swimming pools, and health-related tools. In addition to this, the plastic content is ready to dampen vibrations and make the bearing nearly silent. Here's what helps make plastic ball bearings so fantastic for these apps.
Plastic ball bearings are light-weight, corrosion-resistant, and offer you a lengthy support life. In addition to their minimal cost, they can be simply cleaned and are extremely durable. Movement plastics professional igus has recently expanded its range of xiros polymer grooved ball bearings. These bearings are also Fda-compliant, lubricant-free of charge, electrically insulating, and resistant to each temperature and media.
Plastic bearings are typically mounted into other factors like wheels, pulleys, and housings. In this way, the inner ring is primarily a profile of the pulley's profile, and the outer ring is a shaft or fixing clip. The consequence is seamless integration of the bearing and the bordering areas, which minimizes the overall assembly time and costs. You can also use a number of plastic ball bearings in a single application for much more alternatives.

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