China OEM CZPT OEM Parts/Automotive Product/Agricultural Machinery/Water Pump Bearing Price/Car Accessories/Distributor/Auto Parts/Compressor/China Wholesale 7902 with Free Design Custom

Product Description

The rings and balls of all-ceramic deep groove ball bearings are made of silicon nitride (Si3N4) ceramic material. This bearing can be designed as a full ball or with PTFE, PEEK or stainless steel 304/316 cage. PTFE is the default standard cage.
Full ceramic deep groove ball bearings have the characteristics of non-magnetic and electrical insulation, wear-resistant and corrosion-resistant, oil-free and self-lubricating, high temperature and cold resistance, and can be used in extremely harsh environments and special working conditions. It can be used in high temperature environment above 400ºC under the condition of full ball or equipped with stainless steel 316 cage. The PEEK cage can also be used at temperatures above 250°C. For CZPT temperatures (for example, lower than -70°C), full ceramic bearings with PTFE cages or stainless steel 316 cages can be used. Normally, the normal radial clearance is C0. When it is necessary to adapt to the extreme environment, other clearances can be customized.

model size(mm)   Installation size (mm) weight weight
da Da ra (kg) (kg)
d D B r(min)  r1(min) min max max ZrO2 Si3N4
7900 10 22 6 0.3 0.15 12.5 19.5 0.3 0.007 0.0038
7000 26 8 0.3 0.15 12.5 23.5 0.3 0.014 0.0075
7200 30 9 0.6 0.3 15 25 0.6 0.571 0.013
7300 35 11 0.6 0.3 15 30 0.6 0.04 0.571
7901 12 24 6 0.3 0.15 14.5 21.5 0.3 0.008 0.0042
7001 28 8 0.3 0.15 14.5 25.5 0.3 0.017 0.0092
7201 32 10 0.6 0.3 17 27 0.6 0.571 0.015
7301 37 12 1 0.6 18 31 1 0.046 0.571
7902 15 28 7 0.3 0.15 17.5 25.5 0.3 0.012 0.0063
7002 32 9 0.3 0.15 17.5 29.5 0.3 0.571 0.013
7202 35 11 0.6 0.3 20 30 0.3 0.035 0.019
7302 42 13 1 0.6 21 36 1 0.064 0.035
7903 17 30 7 0.3 0.15 19.5 27.5 0.3 0.013 0.0071
7003 35 10 0.3 0.15 19.5 32.5 0.3 0.032 0.017
7203 40 12 0.6 0.3 22 35 0.6 0.052 0.571
7303 47 14 1 0.6 23 41 1 0.087 0.047
7904 20 37 9 0.3 0.15 22.5 34.5 0.3 0.571 0.015
7004 42 12 0.6 0.3 25 37 0.6 0.052 0.571
7204 47 14 1 0.6 26 41 1 0.082 0.045
7304 52 15 1.1 0.6 27 45 1 0.11 0.06
7905 25 42 9 0.3 0.15 27.5 39.5 0.3 0.032 0.018
7005 47 12 0.6 0.3 30 42 0.6 0.061 0.033
7205 52 15 1 0.6 31 46 1 0.099 0.054
7305 62 17 1.1 0.6 32 55 1 0.18 0.098
7906 30 47 9 0.3 0.15 32.5 44.5 1 0.04 0.571
7006 55 13 1 0.6 36 49 1 0.089 0.048
7206 62 16 1 0.6 36 56 1 0.15 0.083
7306 72 19 1.1 0.6 37 65 1 0.27 0.14
7907 35 55 10 0.6 0.3 40 50 0.6 0.058 0.031
7007 62 14 1 0.6 41 56 1 0.12 0.063
7207 72 17 1.1 0.6 42 65 1 0.22 0.12
7307 80 21 1.5 1 44 71 1.5 0.36 0.19
7908 40 62 12 0.6 0.3 45 57 0.6 0.09 0.05
7008 68 15 1 0.6 46 62 1 0.15 0.08
7208 80 18 1.1 0.6 47 73 1 0.28 0.15
7308 90 23 1.5 1 49 81 1.5 0.49 0.27
7909 45 68 12 0.6 0.3 50 63 0.6 0.097 0.053
7009 75 16 1 0.6 51 69 1 0.19 0.1
7209 85 19 1.1 0.6 52 78 1 0.32 0.175
7309 100 25 1.5 1 54 91 1.5 0.64 0.345
7910 50 72 12 0.6 0.3 55 67 0.6 0.1 0.06
7571 80 16 1 0.6 56 74 1 0.2 0.11
7210 90 20 1.1 0.6 57 83 1 0.35 0.19
7310 110 27 2 1 60 100 2 0.82 0.44
7911 55 80 13 1 0.6 61 74 1 0.15 0.08
7011 90 18 1.1 0.6 62 83 1 0.29 0.16
7211 100 21 1.5 1 64 91 1.5 0.48 0.26
7311 120 29 2 1 65 110 2 1.05 0.57
7912 60 85 13 1 0.6 66 79 1 0.15 0.08
7012 95 18 1.1 0.6 67 88 1 0.32 0.17
7212 110 22 1.5 1 69 101 1.5 0.6 0.33
7312 130 31 2.1 1.1 72 118 2 1.32 0.72
7913 65 90 13 1 0.6 71 84 1 0.17 0.09
7013 100 18 1.1 0.6 72 93 1 0.34 0.18
7213 120 23 1.5 1 74 111 1.5 0.77 0.42
7313 140 33 2.1 1.1 77 128 2 1.62 0.88
7914 70 100 16 1 0.6 76 94 1 0.27 0.15
7014 110 20 1.1 0.6 77 103 1 0.47 0.25
7214 125 24 1.5 1 79 116 1.5 0.84 0.45
7314 150 35 2.1 1.1 82 138 2 1.98 1.07
7915 75 105 16 1 0.6 81 99 1 0.28 0.15
7015 115 20 1.1 0.6 82 108 1 0.5 0.27
7215 130 25 1.5 1 84 121 1.5 0.92 0.5
7916 80 110 16 1 0.6 86 104 1 0.3 0.16
7016 125 22 1.1 0.6 87 118 1 0.67 0.36
7216 140 26 2 1 90 130 2 1.09 0.59
7017 85 130 22 1.1 0.6 92 123 1 0.71 0.38
7217 150 28 2 1 95 140 2 1.35 0.73
7918 90 125 18 1.1 0.6 97 118 1 0.45 0.24
7018 140 24 1.5 1 99 131 1.5 0.92 0.5
7919 95 130 18 1.1 0.6 102 123 1 0.46 0.25
7019 145 24 1.5 1 104 136 1.5 0.95 0.51
7920 100 140 20 1.1 0.6 107 133 1 0.64 0.35
7571 150 24 1.5 1 109 141 1.5 0.99 0.54
7921 105 145 20 1.1 0.6 112 138 1 0.66 0.36
7922 110 150 20 1.1 0.6 117 143 1 0.69 0.37

About us
ZheJiang REET BEARING.CO.,LTD is a professional bearing manufacturer and exporter.
We have a wealth of technical.All producing processes are finished in our manufactory. As an ISO9001:2000 certified manufacturer,we will solve various problems in application and use of our bearings. 
Our company is an authorized distributor of FAG, INA, CZPT and other world brand bearings.Our company has the right to self-export bearings and launches its own brand RTB.
Our bearing had been exported to more than 20 countries worldwide and are warmly welcomed.
We are looking forward to your order.
FAQ

1.Is the company a production factory or a trading company?
ZheJiang REET BEARING CO.,LTD is a manufacturing enterprise focusing on bearings and integrating research, production and sales.

2.How many the MOQ of your company?
Depending on the size of the bearing, the MOQ is variable, if you are interested, you can contact me for a quote.

3.Does the company accept OEM or customized bearings?
In addition to standard products, we also supply non-standard and modified standard products for special application. Meanwhile, we provide OEM service.

4.Can the company provide free samples?
We can provide samples for free. You only need to provide shipping.

5.What are the company’s delivery terms?
We can accept EXW,FOB,CFR,CIF,etc. You can choose the 1 which is the most convenient cost effective for you.
 

Three basic types of pulleys, their applications and ideal mechanical advantages

There are 3 basic types of pulleys: movable, fixed and compound. Each has its advantages and disadvantages, and you should be able to judge which type is best for your needs by looking at the table below. Once you have mastered the different types of pulleys, you can choose the right pulley for your next project. Now that you have mastered the 3 basic types, it is time to understand their applications and ideal mechanical advantages.
pulley

describe

The stress characteristics of a pulley depend on its size and construction. These stresses are derived by comparing the stress characteristics of different pulley designs. Stress criteria include static and fatigue strength analyses and specify maximum stress ranges. Stresses are calculated in a 3D stress field, including radial, tangential and axial stresses. The stress characteristics of pulleys are critical to the design and manufacture of industrial machines.
The principal stresses on the pulley shell are distributed in the tangential and hoop directions, close to the centerline of the pulley. If the pulley has a wide face, the axial stress occurring near the shell/disk junction can be large. The stress distribution was determined using British Standard BS5400 Part 10: Stresses at the shell and end disc connections for infinite fatigue life.
Another type of composite is a pulley with a belt section. Such structures are well known in the art. The corresponding help chapters for these elements contain detailed descriptions of the internal structure of these components. Chamfers between pulleys can also be defined using multiple tapers, with a smaller taper extending from midpoint 44 to large diameter 42. Additionally, the pulley can have multiple taper angles, and as the pulley moves away, the taper angle is from the center.

type

A pulley system uses a rope to move the object and 1 side of the rope to lift the load. The load is attached to 1 end of the pulley, while the other end can move freely in space. The force applied to the free end of the rope pulls the load up or down. Because of this, the mechanical advantage of the movable pulley is 2 to one. The greater the force applied to the free end of the rope, the greater the amount of movement achieved.
There are 3 common types of pulleys. The cast-iron variety has a rim at the front and a hub at the back. The arms of the pulley can be straight or curved. When the arms contract and yield instead of breaking, they are in tension. The top of the pulley centers the belt in motion and is available in widths ranging from 9mm to 300mm.
The rope, hub and axle are mounted on the pulley. They are common and versatile mechanical devices that make it easier to move or lift objects. Some pulleys change the direction of the force. Others change the magnitude. All types of pulleys can be used for a variety of different applications. Here are some examples. If you’re not sure which type to choose, you can find more resources online.
pulley

application

The applications for pulleys are almost limitless. This simple machine turns complex tasks into simple ones. They consist of a rope or chain wrapped around a wheel or axle. Using ropes, 1 can lift heavy objects without the enormous physical exertion of traditional lifting equipment. Some pulleys are equipped with rollers, which greatly magnifies the lifting force.
When used properly, the pulley system can change the direction of the applied force. It provides a mechanical advantage and allows the operator to remain separate from heavy objects. They are also inexpensive, easy to assemble, and require little lubrication after installation. Also, once installed, the pulley system requires little maintenance. They can even be used effortlessly. Despite having many moving parts, pulley systems do not require lubrication, making them a cost-effective alternative to mechanical lifts.
Pulleys are used in many applications including adjustable clotheslines in different machines, kitchen drawers and motor pulleys. Commercial users of pulley systems include cranes. These machines use a pulley system to lift and place heavy objects. They are also used by high-rise building washing companies. They can easily move a building without compromising its structural integrity. As a result, many industries rely on technology to make elevators easier.

Ideal mechanical advantage

The ideal mechanical advantage of a pulley system is the result of rope tension. The load is pulled to the center of the pulley, but the force is evenly distributed over the cable. Two pulleys will provide the mechanical advantage of 2 pulleys. The total energy used will remain the same. If multiple pulleys are used, friction between pulleys and pulleys reduces the return of energy.
Lever-based machines are simple devices that can work. These include levers, wheels and axles, screws, wedges and ramps. Their ability to work depends on their efficiency and mechanical superiority. The ideal mechanical advantage assumes perfect efficiency, while the actual mechanical advantage takes friction into account. The distance traveled by the load and the force applied are also factors in determining the ideal mechanical advantage of the pulley.
A simple pulley system has an MA of two. The weight attached to 1 end of the rope is called FA. Force FE and load FL are connected to the other end of the rope. The distance that the lifter pulls the rope must be twice or half the force required to lift the weight. The same goes for side-by-side pulley systems.

Materials used in manufacturing

While aluminum and plastic are the most common materials for making pulleys, there are other materials to choose from for your timing pulleys. Despite their different physical properties, they all offer similar benefits. Aluminum is dense and corrosion-resistant, and plastic is lightweight and durable. Stainless steel is resistant to stains and rust, but is expensive to maintain. For this reason, aluminum is a popular choice for heavy duty pulleys.
Metal can also be used to make pulleys. Aluminum pulleys are lightweight and strong, while other materials are not as durable. CZPT produces aluminium pulleys, but can also produce other materials or special finishes. The list below is just representative of some common materials and finishes. Many different materials are used, so you should discuss the best options for your application with your engineer.
Metals such as steel and aluminum are commonly used to make pulleys. These materials are relatively light and have a low coefficient of friction. Steel pulleys are also more durable than aluminum pulleys. For heavier applications, steel and aluminum are preferred, but consider weight limitations when selecting materials. For example, metal pulleys can be used in electric motors to transmit belt motion.
pulley

cost

Replacing a tensioner in a car’s engine can cost anywhere from $90 to $300, depending on the make and model of the car. Cost can also be affected by the complexity of the pulley system and how many pulleys are required. Replacement costs may also increase depending on the severity of the damage. The cost of replacing pulleys also varies from car to car, as different manufacturers use different engines and drivetrains.
Induction motors have been an industrial workhorse for 130 years, but their cost is growing. As energy costs rise and the cost of ownership increases, these motors will only get more expensive. New technologies are now available to increase efficiency, reduce costs and improve safety standards.
The average job cost to replace an idler varies from $125 to $321, including labor. Parts and labor to replace a car pulley can range from $30 to $178. Labor and parts can cost an additional $10 to $40, depending on the make and model of the car. But the labor is worth the money because these pulleys are a critical part of a car’s engine.

China OEM CZPT OEM Parts/Automotive Product/Agricultural Machinery/Water Pump Bearing Price/Car Accessories/Distributor/Auto Parts/Compressor/China Wholesale 7902     with Free Design CustomChina OEM CZPT OEM Parts/Automotive Product/Agricultural Machinery/Water Pump Bearing Price/Car Accessories/Distributor/Auto Parts/Compressor/China Wholesale 7902     with Free Design Custom

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