China Japan NTN bearings 6308ZZ NTN deep groove bearing 6308ZZC3/5K Radial Ball Bearing manufacturer

Type: BALL
Structure: Deep Groove
Applicable Industries: Manufacturing Plant, Machinery Repair Shops, Farms
Bore Size: 0.1 – 40 mm
Model Number: 6308ZZ
Precision Rating: P6 P5
Seals Type: ZZ
Number of Row: Single row
Bearing name: Japan CZPT bearings 6308ZZ
Size: 40x90x23 mm
Material: Chrome Steel
Package: Single box packed
Cage: steel
Sample: Available
Certificate: ISO9001:2008
Service: OEM Available
Feature: Motors application
Packaging Details: small inner plastic bag and outer paper box. big Inside bound package and outside with box original packaging

Japan CZPT bearings 6308ZZ CZPT deep groove bearing 6308ZZC3/5K Radial Ball Bearing

The 6308-2RS and 6308-ZZ is a 40mm ball bearing that is found in many applications. The 6308-2RS ball bearing has 2 contact rubber seals 1 on each side of the ball bearing. The 6308-ZZ ball bearing has 2 non-contact metal shields 1 on each side of the ball bearing. If your application requires a 6308 ball bearing with only 1 seal or shield you can get this ball bearing and take 1 of the shields or seals off. This 40mm ball bearing is high quality and can take electric motor demands if needed.

This bearing can be found with the following part numbers on it:6308-2RS, 6308 2RS, 6308 RS, 6308RS, 6308-ZZ, 6308 ZZ, 6308ZZ, 6308 Z

Model Japan CZPT bearings 6308ZZ CZPT deep groove bearing 6308ZZC3/5K Radial Ball Bearing
Specification: 40x90x23 mm
Brand NTN
Weight 0.64 kg/PC
Material Chrome Steel
Row Single Row
Application Machinery parts
Quality ISO 9001:2000 standard
Precision P0,P6,P5
HS CODE 8482157100
Service OEM available
• 6308 ZZ • 6308 ZZ
• 6308 ZZ • 6308 ZZ.C3
• 6308 ZZ.C3.D43 • 6308 ZZ.C4
• 6308 ZZ/2AS • 6308 ZZ/5K
• 6308 ZZC3 • 6308 ZZC3/2AS
• 6308 ZZC4 • 6308 ZZCM

What is the difference between LLB, LLU & VV seals? The “LLB” & “VV” seal is a non-contact seal for reduced torque or higher speed requirements. The “LLU” seal is contact seal for better grease contamination control, but the contact friction increases torque and lowers the limiting speed.“2RS” literally means “Two Rubber Seals”Grade 10 Chromium Steel Balls:High precision balls are within 10/1,000,000″ round, twice as round as the industry standard, at it’s highest level.52100 High Carbon Chromium Alloy Races:Vacuum de-gassed process for the purest chromium alloy steel, hardened to R-62, extremely tough and very durable. Polished to a mirror finish for ABEC-3 precision and noiseless movement.Riveted Steel Retainer for toughness, ABEC-3 tolerances and noise tested, C-3 or C-N Internal ClearanceABEC RatingThe ABEC scale is an industry accepted standard for the tolerances of a ball bearing. It was developed by the Annular Bearing Engineering Committee (ABEC) of the American Bearing Manufacturers Association (ABMA). There are 5 classes from largest to smallest tolerances: 1, 3, 5, 7 and 9. The higher ABEC classes provide better precision, effciency and greater speed capabilitiesABEC 1 = normal industry standard, least expensive and least accurateABEC 3 = class 6 Enduro minimum standardABEC 5 = class 5ABEC 7 = class 4ABEC 9 = class 2

Similar Bearing models we can offer :

Model d/mm D/mm B/mm Weight/KG
6000LLU/ZZ 10 26 8 0.042
6001LLU/ZZ 12 28 8 0.049
6002LLU/ZZ 15 32 9 0.066
6003LLU/ZZ 17 35 10 0.086
6004LLU/ZZ 20 42 12 0.152
6005LLU/ZZ 25 47 12 0.216
6006LLU/ZZ 30 55 13 0.256
6007LLU/ZZ 35 62 14 0.342
6008LLU/ZZ 40 68 15 0.423
6009LLU/ZZ 45 75 16 0.54
6571LLU/ZZ 50 80 16 0.575
6200LLU/ZZ 10 30 9 0.071
6201LLU/ZZ 12 32 10 0.082
6202LLU/ZZ 15 35 11 0.099
6203LLU/ZZ 17 40 12 0.143
6204LLU/ZZ 20 47 14 0.234
6205LLU/ZZ 25 52 15 0.282
6206LLU/ZZ 30 62 16 0.439
6207LLU/ZZ 35 72 17 0.635
6208LLU/ZZ 40 80 18 0.807
6209LLU/ZZ 45 85 19 0.897
6210LLU/ZZ 50 90 20 1.02
6300LLU/ZZ 10 35 11 0.117
6301LLU/ZZ 12 37 12 0.132
6302LLU/ZZ 15 42 13 0.181
6303LLU/ZZ 17 47 14 0.254
6304LLU/ZZ 20 52 15 0.317
6305LLU/ZZ 25 62 17 0.511
6306LLU/ZZ 30 72 19 0.763
6307LLU/ZZ 35 80 21 1.01
6308LLU/ZZ 40 90 23 1.4
6309LLU/ZZ 45 100 25 1.84
6310LLU/ZZ 50 110 27 2.36

Product Photos

Packaging & ShippingBearing packages :
1) Inner Plastic Bag+ Paper Box + Carton(+Pallet);
2) Small sizes:Plastic Tube + Carton
3) Big sizes:Wooden Case

Application IndustryWidely used in metallurgy ,mining ,petroleum,chemical,coal,cement ,paper,windpower,heavy machinery ,enginnering machinery,port machinery and other industries.
a. Auto wheel hub, Auto engine, Auto axle
b. Agricultural machinery, Rotary plow bearings, Tractor, Water pump, Oil engine harvester, Seeder, Tricycle, Farm vehicle, Cultivator
c.Engineering machinery, Excavator, Dozer, Paver, Loader, Hoisting machinery, Piling soil machinery
d. Steel mill machinery, Oil field machinery, Motorship machinery
e. Hardware tool, Electric power tool, Household appliance industry
f. Electronic toys, Fitness equipment, Building machinery
g. Series Of Pumps, Antiseptic Pump, Water pump, Submersible pump, Sewage pump


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What is a bushing?

If you’ve ever wondered what an enclosure is, you’ve come to the right place. This article will provide an overview of different types of housings, including air-insulated, oil-impregnated porous bronze, and epoxy-impregnated capacitor cells. After reading this article, you will be better equipped to make an informed choice about the type of bushings your truck needs.

air insulating sleeve

When choosing bushings for your electrical application, you need to look for bushings with long-lasting insulation. In addition to being durable, bushings must have the correct design shape and material to remain effective over time. Porcelain was used in early casing designs and was chosen for indoor and outdoor applications due to its low cost and low linear expansion. Porcelain also requires a lot of metal fittings and flexible seals to remain effective.
Solid bushings have a center conductor and a porcelain or epoxy insulator. They are used in low voltage electrical applications such as small distribution transformers and circuit switches. However, their low radial capacity limits their use in high-voltage applications, so they are limited to circuit switches and other low-voltage equipment. The electrical service duty of the bushing determines the type of insulation required.
Another type of air-insulated bushing is made of conductive metal, which reduces heat transfer. This design enables it to operate over a range of temperature conditions. Additionally, air-insulated bushings are generally more effective than gas-insulated bushings in a range of applications. The main difference between air-insulated bushings and gas-insulated bushings is the insulating material. While gas-insulated bushings are usually made of high-quality materials, high-quality materials are still preferred in some applications.
Elliott # B series insulators are 25 kV class and pressure molded cycloaliphatic epoxy resins. They feature knurled brass inserts and 16 UNC threads. If you choose this type, make sure it matches the exact diameter of your Elliott Class 25 kv air insulated bushing. These insulators also provide overall shielding and require openings to fit inch diameters.
There are two types of air-insulated bushings: air-to-air and oil-to-oil. Oil is a stronger dielectric than air, and air-to-oil bushings are used to connect atmospheric air to oil-filled equipment. They are available for solid and capacitive hierarchies. So, which one is right for you? Just choose the right insulation to make your equipment as efficient as possible.

Oil Impregnated Porous Bronze Bushings

Oil-impregnated porous bronze (PbB) bushings are one of the best options for lubricating metal bearings. Lubrication is maintained even in high temperature applications as oil penetrates into the pores of the bronze. They are also self-lubricating and maintenance-free. Manufactured by CZPT, the Oil Impregnated Bronze Bushing is a powder metal process that is uniformly lubricated by a uniform oil film. This type of bearing is one of the most efficient in terms of precision performance.
One major difference between oil-impregnated bronze bushings and standard cast bronze bushings is their manufacturing process. Oil-impregnated bronze bushings are pressed from powder and then sintered to form a hardened part. This method is very effective for high-volume manufacturing, but it also has its limitations. Oil-impregnated bronze bushings are cheaper and more efficient, but they have mechanical limitations.
The production of oil-impregnated porous bronze bushings is simple. Powder bronze bushings are pressed and vacuum sealed by forcing oil into the pores. The low stress properties of oil-impregnated bronze bushings make them easier to manufacture in high volume. It also does not require additional lubrication. However, oil-impregnated porous bronze bushings have relatively low mechanical strength and are not recommended for applications where high temperatures are present.
Oil Impregnated Porous Bronze is also known as BPPB. Unlike traditional oil-impregnated bronze bushings, BPPB bushings have a high oil retention capacity. This means they will last a long time and you will save a lot of maintenance costs. But be careful. Porous bronze bushings can only last so long without oil.
Oil-impregnated bronze bushings are a good choice if dimensional consistency is important. BP bronze bushings have the same C dimension as solid metal bushings. While the CZPT is a ghost of the past, there are now many powder metal manufacturers producing BP housings. Their C of F values ​​range from 0.04 to 0.08.

Epoxy Impregnated Capacitor Batteries

Epoxy impregnated condenser core sleeves are conductive paper used in air conditioning systems. The paper core is coated with epoxy resin and the insulating shell is silicone rubber. RIP bushings have excellent electrical properties, are fire resistant and are relatively small. However, the process of making these products is not easy and mistakes are common. These defects manifest as cracks or other structural damage in the capacitor cells.
RIF (Resin Impregnated) bushings feature a finely graded design. The capacitor core is made of glass fiber impregnated with epoxy resin. The outer insulation is made of silicone rubber sheds glued directly to the capacitor core. These bushings are designed for small clearances, so no filler material is required.
In order to determine whether the RIP sleeve is void-free and dry, the insulating paper must be impregnated with epoxy resin. The process is similar to making conventional condenser core sleeves, but with greater flexibility and robustness. The main difference between RIP bushings and conventional insulators is the epoxy content.
Capacitor grading bushings are also available. These bushings increase the electric field at the ends of the capacitor core plates. The higher the temperature, the higher the electric field. These properties make resin-impregnated capacitor mandrel sleeves reliable. However, capacitor grade bushings have higher electric fields than nonlinear bushings.
The capacitor core of the present invention is made by winding paper around the winding tube 3 . The paper may contain an intermediate conductive foil. The winding tube is then covered with electrical insulator. Afterwards, the capacitor core 1 will be RIP and electrically connected to the electrical conductor 6 .
To further characterize the performance of RIPs, thermal shock current (TSC) was used to determine their trap parameters. Unmodified epoxy resin and nano-SiO2 modified RIP were tested. The RIP samples were polarized under a 2 kV/mm electric field at 333 K for 10 min and then subcooled to 193 K with liquid nitrogen. TSC curves were obtained at 3 K/min and 383 K.

plastic bushing

Plastic bushings are essential for many industries. They protect wires and other mechanical parts. They come in many shapes and sizes and are often used as adapters when connecting two pipes or tubes of different diameters. They are available in a variety of materials including rubber, steel and various other plastics. Most bushings are cylindrical or conical in shape and made of shock absorbing material. They slide on rods or pipes to provide low friction motion.
Plastic bushings can be made from a variety of materials, including phenolic, polyethylene, and nylon. While phenolic resins have long been the preferred choice for heavy-duty applications, nylon is the most commonly used lining plastic. Nylon has several advantages, including low friction, no lubrication, quiet operation, and low wear. In addition to these advantages, it is easy to form and cast. In order to obtain better mechanical properties, fillers such as molybdenum disulfide can be added to the material. Plus, filled nylon parts resist deformation at temperatures up to 300 degrees Fahrenheit.
Another benefit of plastic bushings is their low cost. Much cheaper than metal, plastic is a versatile material that can be used in a variety of industries. A quick installation and replacement process makes them the first choice for users who need to install new components quickly. Plus, plastic bushings don’t wear out as quickly as metal, which is another benefit. And because the wear rate of plastic bushings is predictable, manufacturers can easily replace them before they start to fail. And they last longer, so you save time and money.
Plastic bushings are widely used in machinery with sliding and rotating shaft components. They have excellent load-carrying capacity and anti-friction properties. They are essential to many industries, including construction, mining, agriculture, hydropower, transportation and food processing. They are easy to install and come in a variety of sizes and shapes. They are very durable and very reliable. They reduce machine wear and are less expensive than bearings.

China Japan NTN bearings 6308ZZ NTN deep groove bearing 6308ZZC3/5K Radial Ball Bearing     manufacturerChina Japan NTN bearings 6308ZZ NTN deep groove bearing 6308ZZC3/5K Radial Ball Bearing     manufacturer
editor by czh2023-02-09