China Standard Conveyor Belt Bearing for Rollers Stamping Pulley Ball Bearing 6304 6304zz 6304 2RS near me supplier

Product Description


Structure Conveyor Belt Bearing for Rollers Stamping Pulley Ball Bearing 6304 6304ZZ 6304 2RS
Brand Name CHIK / OEM / Be customized
Series 6300 series deep groove ball bearing
Seals Type Z;  ZZ;  RS;  2RS;  RZ;  OPEN
Ring Material Chrome Steel/Stainless Steel/Carbon Steel
Hardness HRC60~HRC65 / 304C or 440C / HRC50-55
Steel Pressed Cage Bending claw form or rivet form
Material of Cage SPCC / Nylon /Brass
Surface Smooth and Antirust
Tolerance Grade GB/T307.1-205
Precision Rating ABEC1(P0) / ABEC3(P6) / ABEC5(P5) / ABEC7(P4) 
Vibration/Noise Level Z1/V1;  Z2/V2;  Z3/V3
Clearance C2;  C0;  C3;  C4
Grease /Oil As your requirement

Single row deep groove ball bearings are most frequently used bearing type. They are versatile, self-retaining bearings with solid outer rings, inner rings and ball and cage assemblies. Due to their low frictional torque, they are suitable for high and even very high speeds and are robust in operation, little maintenance. Due to the raceway geometry and the balls used as rolling elements, deep groove ball bearings can support relatively high radial loads, as well as small axial loads.


Subject Symbol Description
Seal type ZZ Metal shields on both sides.
2RS Rubber seals on both sides.
Z Metal shield on 1 side.
RS Rubber seal on 1 side.
 Radial internal clearance C2 Less than normal.
CN Normal clearance. Is not indicated as a standard.
C3 Greater clearance than normal.
C4 Greater than C3.
C5 Greater than C4.
Other technical modifications NR Groove with inserted snap ring in outer ring.
N Snap ring groove in the outer ring.
SS Stainless steel.
Cage type M Brass cage ball guided.
MB Brass cage, inner ring centered.
MA Brass cage, outer ring centered.
Speed ratings V Normal vibration level. Is not indicated as a standard.
V2 Lower vibration level than normal.
V3 Lower vibration level than V2.
V4 Lower vibration level than V3.
Tolerances P0 Normal tolerance level. Is not indicated as a standard.
P6 Greater tolerance level than P0.
P5 Greater tolerance level than P6.


ISO GOST Dimensions (mm) Basic Load Rating (N) Limitting speed ( r/min ) Weight
d D B Dyn. C Stat. C0 Grease Oil
6300 300 10 35 11 8060 3400 23000 27000 0.054
6300 ZZ 80300 10 35 11 8060 3400 23000 27000 0.054
6300 2RS 180300 10 35 11 8060 3400 15000 0.054
6301 301 12 37 12 9750 4150 20000 24000 0.063
6301 ZZ 80301 12 37 12 9750 4150 20000 24000 0.063
6301 2RS 180301 12 37 12 9750 4150 14000 0.063
6302 302 15 42 13 11400 5400 17000 21000 0.087
6302 ZZ 80302 15 42 13 11400 5400 17000 21000 0.087
6302 2RS 180302 15 42 13 11400 5400 12000 0.087
6303 303 17 47 14 13500 6550 16000 19000 0.117
6303 ZZ 80303 17 47 14 13500 6550 16000 19000 0.117
6303 2RS 180303 17 47 14 13500 6550 11000 0.117
6304 304 20 52 15 15900 7800 14000 17000 0.153
6304 ZZ 80304 20 52 15 15900 7800 14000 17000 0.153
6304 2RS 180304 20 52 15 15900 7800 9500 0.153
6305 305 25 62 17 22500 11600 12000 14000 0.238
6305 ZZ 80305 25 62 17 22500 11600 12000 14000 0.238
6305 2RS 180305 25 62 17 22500 11600 7500 0.238


1. Q: When can I get the price?
 A:  after we get your inquiry, usually within 2-6 hours. Urgent will be faster.
2. Q:How about your quality of bearings?
   A:Our quality of bearings is based on ISO9001 and quality of bearing is our soul.
2. Q: Can I get free samples for test from your company?
    A: YES, Standard samples are available.
3. Q: What is the MOQ of your products?
  A: Usually ≥1, According your demand.
4. Q: How about the Delivery time?
    A: About 3-15days. (according your quantity of bearing.)
5. Q: Will you check these products before shipment?
    A: Yes, before shipment products will be strictly inspection on our factory QC Process System.We have a professional QC team.
7. Q: What will we do if If you are not satisfied with the product?
    A: If have any abnormal, Please contact us at first time, we will immediately processing.
8. Q:  How long will you response for our problems?
    A: We will respond within 1 hour. 24 hours to solve your problem.

What makes pulleys so important?

A pulley is a simple tool that makes it easy to lift or move heavy objects. There are many uses for this tool, but let’s take a look at their mechanical advantages. There are several types and many applications, along with their benefits and costs. So what makes them so important? Read on to find out! Below are some of the most common uses for pulleys. Let’s dive into them.

Mechanical advantage

If you’ve ever used rope and pulley systems, you’ve probably noticed their usefulness. A 3:1 mechanical advantage system is like a 300-pound load being moved 1 foot up by 3 feet of rope. Then you can imagine using the same rope to get into a small space. The same principle applies to limited spaces, and a simple mechanical advantage system is just what you need for this purpose.
Assuming frictionless bearings, a single movable pulley can have 2 mechanical advantages. It is attached to a heavy object and requires the pulling force exerted by the jack to lift the heavy object. However, when you use a compound pulley, the force exerted on the rope to lift the object changes direction. The 3 factors used to measure machine efficiency are force, distance, and relative motion.
The mechanical advantage of the pulley is that it reduces the effort required to lift weights. When the rope is attached to the 2 wheels, applying a force of 500 Newtons can lift a mass of 100 kg. This mechanical advantage is why 2 rings in a pulley are better than one. Therefore, using a pulley system will save you energy. You can also use branches instead of ropes and pulleys.


There are several different types of pulleys. They can be simple or complex, depending on how they are connected. Simple pulleys have a grooved wheel on 1 end and are attached to an axle. These pulleys are used to lift heavy objects. They are often found on sailboats, and you can even see them on construction sites. On the other hand, stationary pulleys are attached to stationary structures, such as flagpoles. Fixed pulleys can also be used to lift loads from trucks or trains. Pulleys are also commonly used in wells.
Fixed pulley systems use rollers or single wheels. These pulleys are usually made of nylon or wire rope. They are used in heavy duty applications. They are also used in electric motors. A “V” pulley requires a “V” belt to transmit power. Some of these pulleys have multiple “V” grooves to reduce the risk of power slipping. Once installed, fixed pulleys are suitable for many applications.
Simple pulleys are simple pulleys. It has a pulley mounted on an axle and a rope at 1 end. Rope can be used to pull objects, while plastic pulleys can carry lighter loads. There are 2 main types: heavy duty and simple pulley systems. In either case, their function is the same: they change the direction in which the seat belt is fastened. So when comparing the two, it’s easy to decide which 1 is best for you.


Pulley systems are simple machines used for a variety of industrial and mechanical tasks. Its design parameters and benefits have improved over the years, but they remain essential for many applications. Let’s take a look at some of the most common applications of pulleys. The applications for pulley systems are endless, from construction to mining, from transportation to packaging. Read on to learn more!
Pulley systems are often used to lift large objects, such as blocks, that might otherwise be too heavy to lift. It also makes the exploration process easier by helping people pull heavy objects into place. It is also widely used on sailing ships. Due to its low cost of use and no need for lubrication, it is a practical choice for many applications. It can be used to lift heavy objects and support long ropes.
The pulley system allows you to change the force required to move the object. For example, a two-wheel pulley system is especially useful for reducing the effort required to lift large objects. The mechanical advantage increases with the number of wheels in the system. In addition, the mechanical advantage of a two-wheel pulley system depends on the ratio of the load weight to the number of rope segments in the system.


In most cases, an idler replacement will cost around $150, but the exact cost will depend on several factors, including the make and model of the car. The cost also depends on the type of idler you need and the cost of the OEM parts. Some pulleys are easy to replace at home, while others require specialized tools, such as pulley wrenches. The chart below shows the cost of popular vehicles. Prices are valid at the time of writing.
The diameter of the pulley is also important, this should be about 60% of the diameter of the active pulley. You can also purchase compensating pulleys at factory prices. Be sure to select the correct size before placing the pulley on the machine. Also, make sure you have enough space for the pulleys. Once you have the desired pulley size, you can determine the best type of belt to install.
While this method is the most common type of belt drive, there are other methods of spinning cup blanks directly from a flat metal disk. One such method is described in US Patent No. 5,500,31. US Patent No. 1,728,002 and shows a method of making a dynamically balanced V-groove pulley. Using a headstock die with sliders increases the cost of the pulley. In addition, different cup blanks require different molds.


The lubrication of pulley bearings is relatively simple. The pulley itself rotates smoothly with little vibration. Bearing contact loads are relatively low, and well-lubricated pulleys operate near ambient temperatures. Here are some tips for properly lubricating pulley bearings. Make sure to lubricate the nozzle before applying grease.
Check grease, elastic ring, pulley bearing clearance once a year. If the elastic ring of the pulley is damaged or the roller bearing on the associated pulley is damaged, replace the pulley. Also, check the running noise of the pulleys to see if they are making noise. Check the bearing, damage to the elastic ring may indicate bearing failure or roller failure.
Proper lubrication is critical to the life of the rotating pinion. Avoid exposure to sunlight or water. Protects the pinion meshing area from hard impurities. Liaise with crane operators and lubricators during maintenance and lubrication operations. They should know how to avoid pitfalls in the lubrication process. In case of malfunction, please contact service personnel and take necessary measures.

Compound Pulley System

A compound pulley system is used to lift heavy objects. These systems can use ropes or cords of different sizes. In general, the total weight of all ropes must be less than the weight of a single rope. The system can be used in large areas, but may not be suitable for smaller spaces. To learn more about compound pulleys, read on! Here are some helpful tips. 1. Understand the difference between single wheel and compound wheel
A composite pulley system consists of 3 components: a drive pulley, 1 or more driven pulleys, and 2 pulleys. The drive wheels are usually connected to shafts that are connected to the engine or transmission. The driven wheel is a separate unit mounted on the same shaft as the drive wheel. A compound pulley system helps lift heavy loads. These pulleys are the most common type of pulley system in use today.
Composite pulley systems are widely used on construction sites. They save energy by spreading the weight of heavy loads over multiple smaller loads. This means that the elevator does not have to use high-capacity lifting equipment. Additionally, the compound pulley system allows users to easily adjust power distribution to meet their individual needs. They can also use more than 2 ropes if necessary. This increases the range of motion of the lift arm.

China Standard Conveyor Belt Bearing for Rollers Stamping Pulley Ball Bearing 6304 6304zz 6304 2RS     near me supplier China Standard Conveyor Belt Bearing for Rollers Stamping Pulley Ball Bearing 6304 6304zz 6304 2RS     near me supplier