China NK 6825 Bearings 68x82x25 mm Needle Bearing High Precision Needle Roller Bearing NK6825 double row ball bearing

Relevant Industries: Equipment Repair Outlets, Farms, Strength & Mining
Type: Needle
Model Amount: NK 68/twenty five
Precision Score: P0,P2,P3,P4,P5,P6, P0,P2,P3,P4,P5,P6
Seals Variety: Open up/ZZ/2RS
Number of Row: One row, Solitary and Double row
Brand name identify: K&F and OEM
Sounds: Z1,Z2,Z3
Sample: Appropriate
Clearance: C0,C2,C3,C4,C5 is offered
Materials: Gcr15
Vibration Amount code: V1,V2.V3
OEM: Accept
Packaging Particulars: NK 68/25 Bearings 68x82x25 mm Needle Bearing Large Precision Believe in Needle Roller Bearing NK68/25:Plastic drum and White box and carton, HangZhou JW YRT460 YRTS460 ZKLDF460 YRT580 YRTS580 ZKLDF580 Higher Precision Rotary Desk Bearing Turntable Bearing industrial packaging or as your prerequisite
Port: ZheJiang ,HangZhou,HangZhou

NK 68/25 Bearing 68x82x25 mm Needle Bearing Substantial Precision Have confidence in Needle Roller Bearing NK68/25

drawings:
Part of the bearing specification :

DimensionsMassDesignation
FwDC
mmmmmmkg
486222.fourteenRNA 4908
forty eightsixty two22.15RNA 4908 RS
forty eightsixty two22.15RNA 4908.2RS
forty eightsixty twoforty.26RNA 6908
506225.15NK 50/25 TN
506235.21NK fifty/35 TN
fiftysixty five22.16NKS fifty
526822.eighteenRNA 4909
52sixty eight22.16RNA 4909 RS
fifty twosixty eight22.16RNA 4909.2RS
52sixty eight40.34RNA 6909
55sixty eighttwenty five.eighteenNK fifty five/twenty five
55sixty eight35.25NK 55/35
fifty five7222.22NKS 55
587222.16RNA 4910
fifty eight7222.sixteenRNA 4910 RS
587222.16RNA 4910.2RS
58seventy twoforty.31RNA 6910
sixty72twenty five.17NK 60/25 TN
sixty7235.26NK 60/35
sixty8028.34NKS 60
sixty three80twenty five.26RNA 4911
sixty threeeighty45.forty sevenRNA 6911
657825.22NK 65/25
sixty five7835.31NK 65/35
658528.36NKS sixty five
68eighty two25.24NK sixty eight/25
688235.34NK sixty eight/35
sixty eight85twenty five.28RNA 4912
sixty eight8545.49RNA 6912
Needle roller bearing :
Needle Roller Bearing (needle bearing) is a cylindrical roller with roller bearings, relative to its diameter, roller equally skinny and long. This is called needle roller. Even with having a smaller sized cross-area, has a higher load bearing capacity, geared up with a skinny and prolonged needle bearing roller (roller diameter D≤5mm, L / D≥2.5, L is the size of the roller), so radial framework is compact, its diameter measurement and load capability and other varieties of bearings, bare minimum diameter, especially for radial dimensions restricted assistance framework.

Photograph present:

needle bearings Specification

SolutionNK 68/twenty five Bearing 68x82x25 mm Needle Bearing Large Precision Have faith in Needle Roller Bearing NK68/25
Precision Rating ABEC1,ABEC3,ABEC5
Clearance C0,C2,C3,C4,C5 is obtainable
Sealed Cap Rubber or Metallic
Paypal Satisfactory
OEM Settle for
Vibration Amount code V1, EFANT RTS GCr15 higher accuracy P5 P4 RU178G RU148X RU124 RU85 RU66 RU42 SLEWING RING BEARING cylindrical cross roller bearing V2.V3
Material Gcr15
Seals Kind ZZ/ZRS.RZ/RS. Open
Mass.24 kg
Bore Measurement 68mm
Outside Diametereighty two mm
Thicknesstwenty five mm
Regular export packing Plastic drum+White box+ carton
industrial packaging or as your requiremen.
MOQone pcs
Delivery Time 3-7 days soon after getting your payment
Payment Conditions L/C,T/T,Western Union,MoneyGram,Paypal
Port of shippment by seaZheJiang ,HangZhou,HangZhou
Spot of OriginZheJiang , China
SamplesAccessible

Organization Information

Our factory:

ZheJiang Kai Fu Bearing import&export Co., Ltd. is Specializing in creation the bearings , our bearing are broadly used by massive mechanical businesses. Kai Fu bearing has large-top quality management group,knowledgeable pratitioners,and rapid response and expert support staff,and in the meantime is geared up with very first-class computerized creation traces as well as full quality administration equipment and technique.
we sincerely hope to set up a good organization connection with you in the potential.

Our benefits:

one. Producer,the most competive price tag and great high quality
two. Excellent team of complex engineers give you the best assistance
3.Properly-qualified team of global revenue supply the best service
4.OEM brand name aviliable
five.Abundant inventory and rapid shipping and delivery

QC:
We have total process for the manufacturing and high quality assurance to make sure our items can fulfill your prerequisite. And our top quality can compare with the most chinese renowned bearing manufacture. we have the exact same engineering. These kinds of as 1. Assemblytwo. Windage examination3. Cleansing4. Rotary check5. Greasing and glandsix. Sound inspectionseven. Visual appeal inspection8. Rust avoidance9. Merchandise packaging

Major product:

needle bearings Application:

Packaging & Transport

Delivery:
1.modest quantity, can shipping and delivery by worldwide categorical: DHL TNT FedEx ARAMEX EMS UPS. this is door to door.
two.large quantity, can supply by air, by sea, this is port to port.

Payment:
T/T, L/C, Funds Gram, T3 6

We will serve you a lot more!

Materials Used in Bearings

If you’re not familiar with the types of bearings, you may be interested in knowing more about the materials used to manufacture them. Here’s a look at what each type of bearing is made of, how it’s used, and how much they cost. To find the right bearing for your application, it’s important to choose a quality lubricant. The materials used in bearings are determined by their type and applications. Choosing the right lubricant will extend its life, and protect your machine’s parts from damage and premature wear.

Materials used in bearings

Bearings are made from a variety of materials. Stainless steel is a common material used for the components of bearings. It has a higher content of chromium and nickel. When exposed to oxygen, chromium reacts with it to form chromium oxide, which provides a passive film. For higher temperatures, teflon and Viton are also used. These materials offer excellent corrosion resistance and are often preferred by manufacturers for their unique properties.
Stainless steel is another material used in bearings. AISI 440C is a high-carbon stainless steel commonly used in rolling-contact bearings. It is widely used in corrosive environments, especially in applications where corrosion resistance is more important than load capacity. It can also be heat-treated and hardened to 60 HRC, but has lower fatigue life than SAE 52100. Stainless steel bearings may carry a 20-40% price premium, but their superior performance is worth the extra money.
Graphite and molybdenum disulfide are two of the most common materials used in bearings. While graphite is a popular material in bearings, it has very poor corrosion resistance and is unsuitable for applications where oil or grease is required. Graphite-based composite materials are another option. They combine the benefits of both graphite and ceramic materials. A variety of proprietary materials have been developed for high-temperature use, such as graphite and MoS2.
Wood bearings have been around for centuries. The oldest ones used wood and Lignum Vitae. These materials were lightweight, but they were incredibly strong and durable. Wood bearings were also lubricated with animal fats. During the 1700s, iron bearings were a popular choice. In 1839, Isaac Babbitt invented an alloy containing hard metal crystals suspended in a softer metal. It is considered a metal matrix composite.

Applications of bearings

bearing
Bearings are used in many different industries and systems to help facilitate rotation. The metal surfaces in the bearings support the weight of the load, which drives the rotation of the unit. Not all loads apply the same amount of force to bearings, however. Thrust and radial loads act in distinctly different ways. To better understand the different uses of bearings, let’s examine the various types of bearings. These versatile devices are essential for many industries, from automobiles to ships and from construction to industrial processes.
Cylindrical roller bearings are designed to support heavy loads. Their cylindrical rolling element distributes the load over a larger area. They are not, however, suited to handling thrust loads. Needle bearings, on the other hand, use small diameter cylinders and can fit into tighter spaces. The advantages of these types of bearings are numerous, and many leading producers are now leveraging the Industrial Internet of Things (IIoT) to develop connected smart bearings.
As a power generation industry, bearings play an essential role. From turbines to compressors, from generators to pumps, bearings are essential components of equipment. In addition to bearings, these components help move the equipment, so they can work properly. Typically, these components use ball bearings, although some roller bearings are used as well. In addition to being efficient and durable, these types of bearings also tend to be built to meet stringent internal clearance requirements and cage design requirements.
In addition to bearings for linear motion, bearings can also bear the weight of a rotary part. Depending on the application, they can be designed to minimize friction between moving parts. By constraining relative motion, bearings are used to reduce friction within a given application. The best-designed bearings minimize friction in a given application. If you’re in the market for a new bearing, NRB Industrial Bearings Limited is an excellent source to begin your search.

Types of bearings

bearing
The type of bearings you choose will have a significant impact on the performance of your machinery. Using the right bearings can increase efficiency, accuracy, and service intervals, and even reduce the cost of purchasing and operating machinery. There are several different types of bearings to choose from, including ball bearings and flexure bearings. Some types use a fluid to lubricate their surfaces, while others do not.
Plain bearings are the most common type of bearing, and are used for a variety of applications. Their cylindrical design allows for a relatively smooth movement. Often made of copper or other copper alloy, they have low coefficients of friction and are commonly used in the construction industry. Some types of plain bearings are also available with a gudgeon pin, which connects a piston to a connecting rod in a diesel engine.
Magnetic bearings are the newest type of bearing. They use permanent magnets to create a magnetic field around the shaft without requiring any power. These are difficult to design, and are still in the early stages of development. Electromagnets, on the other hand, require no power but can perform very high-precision positioning. They can be extremely durable and have a long service life. They are also lightweight and easy to repair.
Another type of bearing is needle roller. These are made of thin, long, and slender cylinders that are used in a variety of applications. Their slender size is ideal for a space-constrained application, and their small profile allows them to fit in tight places. These types of bearings are often used in automotive applications, bar stools, and camera panning devices. They have several advantages over ball bearings, including the ability to handle heavy axial loads.

Cost of bearings

A wide range of factors affect the cost of aerospace bearings, including the bearing material and its volatility. Manufacturers typically use high-grade steel for aircraft bearings, which are highly affected by fluctuations in the steel price. Government policies also play a part in the variation in trade price. The implementation of COVID-19 has changed the market dynamics, creating an uncertain outlook for supply and demand of aerospace bearings. New trade norms and transportation restrictions are expected to hamper the growth of this industry.
Demand for aerospace bearings is largely driven by aircraft manufacturers. In North America, aircraft manufacturers must meet extremely high standards of weight, performance, and quality. They also must be lightweight and cost-effective. This has resulted in a rising cost of aerospace bearings. The market for aerospace bearings is expected to grow at the highest CAGR over the next few years, driven by increasing investments in defense and aerospace infrastructure across Asia-Pacific.
Hub assemblies are also expensive. A wheel hub will cost between $400 and $500 for one set of bearings. In addition to this, the speed sensor will be included. The average cost of wheel bearings is between $400 and $500 for one side, including labor. But this price range is much lower if the bearing is a replacement of an entire wheel assembly. It is still worth noting that wheel hub bearings can be purchased separately for a lower price.
Replacement of one or two wheel bearings will depend on the model and year of the vehicle. For a small car, one rear wheel bearing can cost between $190 and $225, whereas two front wheel hubs can cost upwards of $1,000. Labor and parts prices will vary by location, and labor costs may also be covered under some warranty plans. If you decide to have it done yourself, be sure to ask multiple shops for estimates.

Inspection of bearings

bearing
To maintain bearing performance and prevent accidents, periodic inspections are essential. In addition to ensuring reliability, these inspections improve productivity and efficiency. Regular maintenance includes disassembly inspection, replenishment of lubricant and monitoring operation status. Here are some common ways to perform the necessary inspections. Keep reading to learn how to maintain bearings. After disassembly, you must clean the components thoroughly. Ensure that the bearings are free of burrs, debris, and corrosion.
Ultrasound technology is an excellent tool for monitoring slow-speed bearings. Most ultrasound instruments offer wide-ranging sensitivity and frequency tuning. Ultrasound can also be used to monitor bearing sound. Ultra-slow bearings are usually large and greased with high-viscosity lubricant. Crackling sounds indicate deformity. You can also listen for abnormal noise by plugging a vibration analyzer into the machine. Once the machine shows abnormal noise, schedule additional inspections.
Ultrasonic inspection involves using an ultrasound transducer to measure the amplitude of sound from a bearing. It is effective in early warnings of bearing failure and prevents over-lubrication. Ultrasound inspection of bearings is a cost-effective solution for early diagnosis of bearing problems. In addition to being a reliable tool, ultrasonic testing is digital and easy to implement. The following are some of the advantages of ultrasonic bearing inspection.
Dynamic quality evaluation involves the use of a special fixture for measuring bearing deformations under low shaft speed and light radial load. The size of the fixture influences the value of the deformations. A fixture should be sized between the diameter of the sensor and the roller to ensure maximum precision. The outer deformation signal is more sensitive with a larger sensor diameter. A vibration-acceleration sensor is used for the contrast test.

China NK 6825 Bearings 68x82x25 mm Needle Bearing High Precision Needle Roller Bearing NK6825     double row ball bearingChina NK 6825 Bearings 68x82x25 mm Needle Bearing High Precision Needle Roller Bearing NK6825     double row ball bearing
editor by czh 2023-02-19