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China high quality CZPT Needle Roller Bearings Nk85/25 Nk85/35 Rna4916 Rna6916 Nk90/25 Nk90/35 Nk95/26 Nk95/36 Rna4917 Rna6917 Nk100/26 Nk100/36 Rna4918 Rna6918 wheel bearing

Product Description

IKO  needle roller bearings NK85/25 NK85/35 RNA4916 RNA6916 NK90/25 NK90/35 NK95/26 NK95/36 RNA4917 RNA6917 NK1 LS 1 LS 110145 GS 81122 WS 81122 110 112 145 145 120 AXK120155 AS 120155 LS 120155 GS 81124 WS 81124 120 122 155 155 130 AXK130170 AS 130170 LS 130170 GS 81126 WS 81126 130 132 170 170 140 AXK140180 AS 140180 LS 140180 GS 81128 WS 81128 140 142 180 178 150 AXK150190 AS 150190 LS 150190 GS 81130 WS 81130 150 152 190 188 160 AXK165710 AS 165710 LS 165710 GS 81132 WS 81132 160 162 200 198

Shaft Diameter Bearing Designation Body Dimensions Basic Load Rating Limiting Speed Mass
d D Dw B Cr Dynamic Cor     Static
mm mm N rpm g
10 NTB1571 10 24 2 2.75 7820 23900 15000 3.3
12 NTB1226 12 26 2 2.75 8340 26900 13000 3.8
15 NTB1528 15 28 2 2.75 8830 29900 12000 4.1
16 NTB1629 16 29 2 2.75 9070 31400 11000 4.3
17 NTB1730 17 30 2 2.75 9320 32900 11000 4.5
18 NTB1831 18 31 2 2.75 9550 34400 10000 4.7
20 NTB2035 20 35 2 2.75 11700 46500 9000 6.1
25 NTB2542 25 42 2 3 14400 64700 7500 8.2
30 NTB3047 30 47 2 3 15400 73300 6500 9.4
35 NTB3552 35 52 2 3.5 16300 81900 5500 10.6
40 NTB40603 40 60 3 3.5 24200 108000 5000 22
45 NTB4565 45 65 3 4 25900 121000 4500 24.5
50 NTB5070 50 70 3 4 27600 135000 4000 26.5
55 NTB5578 55 78 3 5 32400 171000 4000 33.5
60 NTB6085 60 85 3 4.75 38200 219000 3500 38.5
65 NTB6590 65 90 3 5.25 45710 237000 3000 41.5
70 NTB7095 70 95 4 5.25 47400 244000 3000 61
75 NTB75100 75 100 4 5.75 48400 256000 3000 65
80 NTB85715 80 105 4 5.75 49500 267000 2500 68.5
85 NTB85110 85 110 4 5.75 50300 279000 2500 72
90 NTB90120 90 120 4 6.5 64500 394000 2500 92
100 NTB100135 100 135 4 7 80300 541000 2000 119
110 NTB110145 110 145 4 7 83200 578000 2000 129
120 NTB120155 120 155 4 7 87900 634000 1800 139
130 NTB130170 130 170 5 9 20000 839000 1700 225

K3X5X7-TN K18X24X13 K30X40X30 K55X62X18
K3X5X9-TN K18X24X20 K32X37X13 K55X63X20
K3X6X7-TN K18X25X22 K32X37X17 K55X63X25
K4X7X7-TN K19X23X13 K32X37X27 K55X63X32
K4X7X10-TN K19X23X17 K32X38X20 K58X65X18
K5X8X8-TN K20X24X10 K32X39X16 K60X65X20
K5X8X10-TN K20X24X13 K32X39X18 K60X65X30
K6X9X8-TN K20X24X17 K32X40X25 K60X68X20
K6X9X10-TN K20X26X12 K32X46X32 K60X68X23
K6X10X13-TN K20X26X13 K35X40X13 K60X68X25
K7X9X7-TN K20X26X17 K35X40X17 K60X75X42
K7X10X8-TN K20X26X20 K35X40X25 K64X70X16
K7X10X10-TN K20X28X16 K35X40X27-TN K65X70X20
K8X11X8-TN K20X28X20 K35X40X27 K65X70X30
K8X11X10-TN K20X28X25 K35X42X16 K65X73X23
K8X11X13-TN K20X30X30 K35X42X18 K65X73X30
K8X12X10-TN K21X25X13 K35X42X20 K68X74X20
K9X12X10-TN K22X26X10 K35X42X30 K68X74X30
K9X12X13-TN K22X26X13 K35X45X20 K70X76X20
K10X13X10-TN K22X26X17 K35X45X30 K70X76X30
K10X13X13-TN K22X28X17 K37X42X17 K70X78X30
K10X13X16-TN K22X29X16 K38X43X17 K72X80X20
K10X14X10-TN K22X30X15-TN K38X43X27 K73X79X20
K10X14X13-TN K22X32X24 K38X46X20 K75X81X20
K10X16X12-TN K23X35X16-TN K38X46X32 K75X81X30
K12X15X10-TN K23X35X16 K40X45X13 K75X83X23
K12X15X13-TN K24X28X10 K40X45X17 K75X83X30
K12X16X13-TN K24X28X13 K40X45X27 K80X86X20
K12X17X13-TN K24X28X17 K40X47X18 K80X88X30
K12X18X12-TN K24X30X17 K40X47X20 K85X92X20
K14X18X10 K25X29X10 K40X48X20 K90X97X20
K14X18X13 K25X29X13 K42X47X13 K90X98X27
K14X18X15-TN K25X29X17 K42X47X17 K90X98X30
K14X18X17 K25X30X13 K42X50X20 K95X103X30
K14X20X12 K25X30X17 K43X48X17 K100X107X21
K15X18X17-TN K25X30X20 K43X48X27 K100X108X27
K15X18X17 K25X31X17 K45X50X17 K100X108X30
K15X19X10 K25X31X21 K45X50X27 K105X112X21
K15X19X13 K25X32X16 K45X52X18 K110X117X24
K15X19X17 K25X33X20 K45X53X20 K110X118X30
K15X20X13 K25X33X24 K45X53X21 K115X123X27
K15X21X15 K25X35X30 K45X53X28 K120X127X24
K15X21X21 K26X30X13 K45X59X18-TN K125X133X35
K16X20X10 K26X30X17 K45X59X32 K130X137X24
K16X20X13 K28X33X13 K47X52X17 K135X143X35
K16X20X17 K28X33X17 K47X52X27 K145X153X26
K16X22X12 K28X34X17 K50X55X13,5 K150X160X46
K16X22X16 K28X35X16 K50X55X17 K155X163X26
K16X22X20 K28X35X18 K50X55X20 K160X170X46
K16X24X20 K28X40X25 K50X55X30 K165X173X26
K17X21X10 K30X34X13 K50X57X18 K175X183X32
K17X21X13 K30X35X13 K50X58X20 K185X195X37
K17X21X17 K30X35X17 K50X58X25 K195X205X37
K18X22X10 K30X35X27 K52X57X12 K210X220X42
K18X22X13 K30X37X16 K55X60X20 K220X230X42
K18X22X17 K30X37X18 K55X60X27 K240X250X42
K18X24X12 K30X40X18 K55X60X30 K265X280X50

Our Products Lines:
1. Deep groove ball bearings (68series,69series,60series,62series,63series,64series)
2.Tapered roller bearing(320 series,322 series,323 series)
3.Linear bearing
4.Thrust ball bearing(511 series,512 series,513 series)
5.Cylindrical roller bearing(NU10 series, NJ2 Series, N3 series, NN series)
6.Needle roller bearing
7.Angular contact ball bearing(70 series.72 series.73 series.74 series)
8.Spherical roller bearing
9.Thurst roller bearing
10.Spherical ball bearing(230 series,222series,223series)
11.pillow block bearing(UCP series, UCF series, UCT series, UCFL series)

Why Chose Us?

  1. Excellent and high-quality control, high speed, low noise, long life
    2free sample bearing 
    3.Prompt delivery
    4.Competitive price
    5.Small order accepted
    6.Customers’ drawing or samples accepted
    7.OEM service
    8.ISO Standard 
    9.Professional:12 years manufacture bearing

Packing :
1, Industrial Packing: Polybag / plastic tubes + outer carton box + pallet
2, Commercial packing: Single box + outer carton box + Pallet
3-10 days if in stock 
15-30 days if stock is not enough, depend on the quantity request

Q: Are you a trading company or manufacturer?

A: We are factory of the bearing in china

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock,
it is according to the quantity of the bearing china.

Q: Do you provide samples? is it free or extra?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What are your terms of payment?

A: Payment=10000USD, 30% T/T in advance ,
balance before shippment.
If you have another question, pls feel free to contact us.


Cage: With Cage
Rows Number: Single
Load Direction: Radial Bearing
Style: With Outer Ring, Without Inner Ring
Material: Bearing Steel
Type: Open


Customized Request


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 high quality CZPT Needle Roller Bearings Nk85/25 Nk85/35 Rna4916 Rna6916 Nk90/25 Nk90/35 Nk95/26 Nk95/36 Rna4917 Rna6917 Nk100/26 Nk100/36 Rna4918 Rna6918   wheel bearingChina high quality CZPT Needle Roller Bearings Nk85/25 Nk85/35 Rna4916 Rna6916 Nk90/25 Nk90/35 Nk95/26 Nk95/36 Rna4917 Rna6917 Nk100/26 Nk100/36 Rna4918 Rna6918   wheel bearing
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