Bore Dimensions: 5 – 100 mm
Applicable Industries: Garment Stores, Creating Materials Retailers, Production Plant, Equipment Fix Shops, Foods & Beverage Manufacturing facility, Farms, Restaurant, House Use, Retail, Foodstuff Store, Printing Shops, Design works , Energy & Mining, Foodstuff & Beverage Outlets, Marketing Business
Variety: Needle, Machined ring
Product Number: nki collection
Precision Rating: P5
Seals Variety: open, 1 facet sealed,Double sealed
Number of Row: single and double
Merchandise title: NKI needle bearing
Content: chrome steel with TN cage
Application: Equipment.rolling Mill
Composition: needle bearing with machined rings
Shares: Big
Services: OEM Tailored Solutions
Lubrication: Oil Grease
Feature: Long Lifestyle
Cage: TN plastic cage
Packaging Particulars: Packaging Detailstubes+cartons +pallets industrial packing +cartons +pallets solitary box packing +cartons +pallets
Port: ZheJiang China

Needle roller berings with equipment rings NKI sequence shaft diameter 5mm 6mm 7mm 9mm 10mm 12mm 15mm 17mm Machined-ring needle roller bearing consist of:Machined outer ring , Cage with needles,Separable inner ringNeedle roller bearings are rolling bearings with a minimal radial section peak and large load carrying capability, which are utilized as non-finding bearings and are component of the team of radial needle roller bearings. These bearings comprise machined outer rings, needle roller and cage assemblies and detachable internal rings, i.e. they can be equipped with or without an interior ring in accordance with the software. In distinction to the outer cups of drawn cup needle roller bearings, which are created by forming techniques, the bearing rings are machined. Owing to their non-finding bearing perform, the bearings cannot CZPT the shaft axially in any course.NKI sequence Shaft diameter: 5-100mm NKI5/12 NKI 5/sixteen NKI6/twelve NKI6/sixteen NKI7/twelve NKI 7/16 NKI9/twelve NKI9/16 NKI10/16 NKI10/20 NKI12/sixteen NKI12/20 NKI15/16 NKI15/twenty NKI17/sixteen NKI17/twenty NKI20/16 NKI20/twenty NKI22/16 NKI22/20 NKI25/twenty NKI25/30 NKI28/twenty NKI28/30 NKI30/20 NKI30/thirty NKI32/twenty NKI32/thirty NKI35/20 NKI35/thirty NKI38/20 NKI40/twenty NKI40/30 NKI42/twenty NKI42/thirty NKI45/twenty five NKI45/35 NKI50/twenty five NKI50/35 NKI55/twenty five NKI55/35 NKI60/twenty five NKI60/35 NKI65/twenty five NKI65/35 NKI70/25 NKI70/35 NKI75/twenty five NKI75/35 NKI80/twenty five eighty/35 NKI85/26 NKI85/36NKIS collection Shaft diameter:fifteen-65mm NKIS 15 15X35X20MM NKIS 17 17X37X20MM NKIS 20 20X42X20MM NKIS twenty five 25X47X22MM NKIS 30 30X52X22MM NKIS 35 35X58X22MM NKIS 4040X65X22MM NKIS forty five 45X72X22MM NKIS 50 50X80X28MM NKIS 55 55X85X28MM NKIS sixty 60X90X28MM NKIS sixty five 65X95X28MMNA49 series:NA4900 NA4901 NA4902 NA4903 NA4904 NA4905NA4907 NA 4908 NA 4909 NA4910 NA4911 NA4912 NA4913 NA4914 NA4915 NA4916 NA4917 NA4918 NA4919 NA4920 NA4922 NA4924 NA4926 NA4928 NA49/28 NA19/32 NA49/22 NA69 Sequence: NA6901 NA6902 NA6903 NA6904 NA6905 NA6906 NA6907 NA6908 NA6909 NA6910 NA6911 NA6912 NA6913 NA6914 NA6915 NA6916 NA6917 NA6918 NA6919 NA69/22 NA69/32 NA69/28NA48 sequence:NA4822 NA4824 NA4826 NA4828 NA4830 NA4832 NA4834 NA4836 NA4838 NA4840 NA4844 NA4848 NA4852 NA4856 NA4860 NA4864 NA4868 NA4872 NA4876

Shaft diameterModel quantityDimensionsBasic Load RankingsLimiting
dFwDBr CrCorSpeed
5NKI 5/12TN5815120.three3.nine4.one32000
NKI 5/16TN5815160.35.one5.eight32000
6NKI 6/12TN6916120.three4.5530000
NKI 6/166916160.three5.nine7.one30000
7NKI 7/12TN71017120.34.seventy five5.529000
NKI 7/16TN71017160.three6.27.829000
9NKI 9/twelve91219120.three6.four7.one27000
NKI 9/1691219160.three91127000
10NKI ten/sixteen101422160.311.12.five19000
NKI ten/twenty101422200.three12.eight15.six19000
12NKI twelve/sixteen121624160.three11.five13.eight17000
NKI 12/20121624200.314.618.eight17000
15NKI fifteen/sixteen151927160.three13.eight18.514000
NKI 15/20151927200.317.625.one14000
17NKI 17/16172129160.314.319.813000
NKI 17/twenty172129200.three18.126.913000
20NKI 20/16202432160.315.one22.312000
NKI twenty/twenty202432200.three19.three30.312000
22NKI 22/16222634160.three16.one24.seven11000
NKI 22/twenty222634200.320.four33.511000
25NKI 25/20252938200.three22.one33.nine10000
NKI 25/30252938300.three33.five57.99500
28NKI 28/20283242200.323.537.seven9000
30NKI 30/twenty303545200.3243004150013000
32NKI 32/20323747200.three249004350012000
35NKI 35/20354050200.3260004700011000
38NKI 38/twenty384353200.three270005100011000
40NKI 40/twenty404555200.three275005300010000
42NKI forty two/twenty424757200.3285005600010000
45NKI 45/25455062250.638000740009000
50NKI 50/twenty five505568250.643.seven81.76000
55NKI 55/25556072250.643.190.75500
60NKI sixty/twenty five606882250.648.six100.64900
65NKI 65/twenty five657390251.54.two100.eight4600
70NKI 70/25708095251.54.7113.44100
75NKI seventy five/257585105251.71.seven126.53900
80NKI 80/258090110251.74.nine136.3700
85NKI eighty five/268595115261.79.five149.43600
90NKI ninety/2690100120261.82.3159.five3500
95NKI 95/2695105125261.83.6164.eight3300
100NKI a hundred/thirty100110130301.1100.nine213.93100
110NKI 110/30110120140301.11132753900
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13One-way ClutchesHF
Buyer Feedback Organization Profile Certifications Packing & Delivery FAQ Q:What the MOQ of your business?A:MOQ is 100pcs. anyway reduced MOQ is also satisfactory with a small greater cost, positive the far more you buy the less expensive expense you could get.Q:Could you acknowledge OEM and customize?A:Of course,we can personalize for you in accordance to sample or drawing.Q:Could you supply sample for cost-free?A:Indeed,we can supply sample for totally free,do you mind to get her a ticket?Q:Dose your manufacturing unit have any certification?A:indeed.we have ISO 9001:2008,IQNET and SGS. If you want other like CE,we can do for you.Q:IS you company factory or Trade Firm?A:We have our possess factory our sort is manufacturing unit +trade.Q:Could you notify me the materials of your bearing?A:We have chrome steel,and stainless metal,ceramic and plastic content.Q:Could you offer you door to doorway provider?A:Sure,by specific(DHL,FEDEX,TNT,EMS,7-twelve times to your metropolis.)Q:Could you explain to me the payment phrase of your firm can take? A:T/T.Western Union,PayPal Q:Could you inform me the supply time of your doorways? A:If stock,in 7 times or foundation on your order quantityQ:Can you give me some price reduction?A:Of course, Brass Shaft Ball Bearing Bushing Brass Graphite Machined Collar Flange Sleeve Bronze Bushing you can, make contact with me quickly to get a lot more discounts.

Choosing the Right Ball Bearing for Your Application

When choosing a Ball Bearing, there are several things to consider. These factors include: the size, lubricant type, presence of corrosive agents, stray electrical currents, and more. It can be challenging to choose the right type, size, and type of ball bearing for your application. You should also carefully calculate the loads to determine the right size. Here are some tips for choosing the right Ball Bearing for your application.


The single-row ball bearing is one of the most popular types of bearings. The inner and outer ring are designed with raceway grooves that are shaped slightly larger than the balls. This type of bearing has a low torque and can handle high-speed applications with minimal power loss. The radial dimensions of single-row ball bearings also vary, so it is possible to find one that fits your specific application. Besides the above-mentioned advantages, single-row ball bearings are also available with varying grease levels and are widely applicable to applications where the space is limited.
Single-row ball bearings are also called angular-contact ball bearings. Because of their single-row design, they are not separable and can accommodate a high-speed, heavy-duty application. Single-row angular-contact ball bearings can only handle axial load in one direction, and they must be installed in pairs for pure radial loads. Single-row ball bearings are a popular type of rolling bearings and can be used for a wide range of applications.


The self-aligning ball bearing was invented by Sven Wingquist, a plant engineer for a textile company in Sweden. While he was responsible for making production as efficient as possible, he soon realized that the machinery he had in place wasn’t working as efficiently as it could. Although ball bearings are great for reducing friction, they were not flexible enough to compensate for misalignments in the machine.
Self-aligning ball bearings have two rows of balls and a common sphered raceway. The inner ring is curved and combines the two rows of balls into one cage. These bearings can tolerate shaft misalignment and compensate for static angular defects. They can be used in simple woodworking machinery, ventilators, and conveying equipment. They are often the preferred choice for applications where shaft alignment is an issue.


A Ceramic ball bearing is a type of high-performance bearing that is available in both full-ceramic and hybrid forms. The main differences between ceramic and steel ball bearings are their construction, lubrication, and mobility. High-quality ceramic ball bearings are durable, and they are ideal for corrosive and high-temperature applications. The material used to create these bearings helps prevent electrolytic corrosion. They are also ideal for reducing the friction and lubrication requirements.
Ceramic balls are harder and less brittle than steel balls, which gives them a higher degree of rigidity. Ceramics also have a higher hardness, with a hardness of Rc75-80 compared to Rc58-64 for steel balls. Their high compressive strength is approximately 5 to 7 times greater than steel. In addition, they have a very low coefficient of friction, which allows them to spin at higher speeds and with less friction. This increases their lifespan and durability, and decreases the energy needed to turn cranks.


Unlike traditional bearings, steel balls have a relatively uniform hardness. Carbon steel, for instance, is 2.1% carbon by weight. According to the American Iron and Steel Institute, copper content must be no more than 0.40% and manganese content should not be more than 1.65 g/cm3. After carbonizing, steel balls undergo a process called sizing, which improves their roundness geometry and hardness.
The main differences between steel ball bearings and ceramic ball bearings can be traced to their different materials. Ceramic balls are made from zirconium dioxide or silicon nitride. Silicon nitride is harder than steel and resists shocks. The result is increased speed and longer service life. Polyoxymethylene acetal (PMMA) bearing balls are known for their stiffness, strength, and tolerance, but are not as common as steel ball bearings.


The most popular types of plastic ball bearings are made of polypropylene or PTFE. These bearings are used in applications requiring higher chemical resistance. Polypropylene is a structural polymer that offers excellent physical and chemical properties, including excellent resistance to organic solvents and degreasing agents. Its lightweight, low moisture absorption rate, and good heat resistance make it an excellent choice for high-temperature applications. However, plastic bearings are not without their drawbacks, especially when operating at very high temperatures or under heavy loads.
Compared to metal bearings, plastic ball-bearings do not require lubrication. They also are highly corrosion-resistant, making them an excellent choice for wash-down applications. They are also post-, autoclave-, and gamma sterilizable. Many conventional steel ball-bearings cannot handle the high temperatures of food processing or swimming pools. In addition to high temperature applications, plastic ball bearings are resistant to chemicals, including chlorine.


Plastic sliding bearings are molded bearings made of engineering plastic. With self-lubricating modification technology, these bearings can be produced by injection molding of plastic beads. They are widely used in various industries such as office equipment, fitness and automotive equipment. In addition to plastic bearings, glass balls are used in a variety of other applications, including medical equipment. Glass ball bearings have excellent corrosion resistance, excellent mechanical properties, and are electrically insulators.
Plastic ball bearings are made of all-plastic races and cages. These bearings are suitable for applications that are exposed to acids and alkalis. Because they are cheaper than glass balls, plastic ball bearings are popular in chemical-exposed environments. Stainless steel balls are also resistant to heat and corrosion. But the main disadvantage of plastic ball bearings is that they are not as strong as glass balls. So, if weight and noise is your main concern, consider using plastic balls instead.


The global miniature ball bearing market is expected to reach US$ 2.39 Billion by 2027, at a CAGR of 7.2%. Growth in the region is attributed to technological advancement and government initiatives. Countries such as India and China are attracting FDIs and emphasizing the establishment of a global manufacturing hub. This is boosting the market for miniature ball bearings. The miniscule ball bearings are manufactured in small quantities and are very small.
Some manufacturers produce miniature ball bearings in different materials and designs. Chrome steel is the most popular material for miniature ball bearings because of its high load capacity, low noise properties, and lower cost. But the cost of stainless steel miniature bearings is low, since the amount of steel used is minimal. Stainless steel miniature bearings are the smallest in size. Therefore, you can choose stainless steel mini ball bearings for high-speed applications.


Angular-contact ball bearings have three components: a cage, inner ring, and balls. Angular-contact ball bearings can support high axial and radial loads. Various design and manufacturing attributes make angular-contact ball bearings suitable for a variety of applications. Some features of this bearing type include a special lubricant, different cage materials, and different coatings.
The size of an angular-contact ball bearing is determined by the design units: outer ring width, axial load, and radial load. Depending on the type of application, an angular-contact ball bearing may be manufactured in double-row, triple-row, or quadruple-row configurations. Angular contact ball bearings can be classified according to their design units, which range from metric to imperial. A higher ABEC number means tighter tolerances. To determine the tolerance equivalent of a particular bearing, consult a standard Angular-contact ball bearing table.
Angular-contact ball bearings feature high and low-shoulder configurations. They have two-dimensional races that accommodate axial and radial loads. They are available in self-retaining units with solid inner and outer rings, and ball and cage assemblies. Cages made of cast and wrought brass are the most popular, but lightweight phenolic cages are also available. The latter is a better choice because it doesn’t absorb oil and has lower rolling friction.


When it comes to the construction of a ball bearing, high-quality raw materials are a crucial component. These materials not only affect the overall quality of a ball bearing, but also influence the cost. That’s why you should pay close attention to raw material quality. In addition to that, raw materials should be tested several times before the manufacturing process to ensure quality. Read on for some information about the different types of materials used to make ball bearings.
Steel is the most common material for ball bearings. Most ball bearings contain stainless steel balls, which are remarkably corrosion-resistant. They are also resistant to saltwater and alkalis. However, stainless steel balls are heavier than plastic ones, and they are also magnetic, which may be a drawback in some applications. If you’re looking for a metal-free option, glass balls are the way to go. They’re sturdy, lightweight, and resistant to a wide range of chemicals.

China NKNKI 5mm 6mm 7mm 9mm 10mm 12mm 15mm 17mm needle roller bearing for machinegearbox     double row ball bearingChina NKNKI 5mm 6mm 7mm 9mm 10mm 12mm 15mm 17mm needle roller bearing for machinegearbox     double row ball bearing
editor by czh 2023-02-19