China best Nu315 Stainless Steel Cylindrical Roller Bearings with high quality

Product Description



SI Nu315 Stainless Steel Cylindrical Roller Bearings

Greese/Oil As your requirement, such as open, z,zz,rz, 2rz,rs, 2rs, and so on.
Vibration Z1/V1,Z2/V2,Z3/V3
Precision P6, P0, P5, P4, P2
Internal clearance codes  
C0, C2, C3, C4, C5
Snap ring N, NR
Feature Low voice, High speed, Low friction, long service life
Application Pharmaceutical equipment, medical equipment, textile machinery
and accessories, knitting machines, weaving machines, spinning
equipment, textile accessories, non-woven fabric machinery,
textile equipment, machinery, metal, mold, automotive
electronics, electrical, instrumentation, military, aviation
aerospace, plastics and rubber industry, medical and other fields.
Package 1,barreled package+outer carton+pallets 
2,single box+outer carton+pallets 
3,tube package+middle box+outer carton+pallets 
4,According to your’s requirement
Details We have a complete process for production and quality assurance to make sure our products can meet your requirement.
2.Windage test
4.Rotary test
5.Greasing and gland
6.Noise inspection
7.Appearance inspection
8.Rust prevention

The cylindrical roller bearing is the radial rolling bearing with the cylindrical rollers. The internal structure of the bearing adopts a parallel arrangement of rollers. This type of bearings is the separable bearing. Separate inner ring and outer ring, which are very convenient to install and disassemble, with the advantage of large radial load capacity and low friction coefficient. 

The bearing can be divided into single-row, double-row, and multi-rows cylindrical roller bearings according to the number of rows of rolling elements. There are also differences in the design of the position of the ribs.


Model List (Please contact with us for more models)



Bearing Number Boundary dimensions(mm) Basic load ratings(kN) Limiting speeds(rpm) Mass(Kg)
    d D B rs min rs1 min Cr Cor Grease Oil (Approx.)
NU10 Series NU1005 25 47 12 0.6 0.3 15.1 14.1 16,000 19,000 0.092
  NU2211E 55 100 25 1.5 1.1 97 114 5,600 6,600 0.968
  NU2212 60 110 28 1.5 1.5 96 116 5,800 6,800 1.06
  NU2212E 60 110 28 1.5 1.5 131 157 5,200 6,100 1.21
  NU2213 65 120 31 1.5 1.5 120 149 5,400 6,300 1.4
  NU2213E 65 120 31 1.5 1.5 149 181 4,800 5,600 1.6
  NU2214 70 125 31 1.5 1.5 119 151 5,000 5,900 1.47
  NU2214E 70 125 31 1.5 1.5 156 194 4,500 5,200 1.7
  NU2215 75 130 31 1.5 1.5 130 162 4,700 5,500 1.55
  NU2215E 75 130 31 1.5 1.5 162 207 4,200 4,900 1.79
  NU2216 80 140 33 2 2 147 186 4,400 5,100 1.93
  NU2216E 80 140 33 2 2 186 243 3,900 4,600 2.12
  NU2217 85 150 36 2 2 170 218 4,100 4,800 2.44
  NU2217E 85 150 36 2 2 217 279 3,700 4,300 2.68
  NU2218 90 160 40 2 2 197 248 3,900 4,600 3.1
  NU2218E 90 160 40 2 2 242 315 3,500 4,100 3.33
  NU2219 95 170 43 2.1 2.1 230 298 3,600 4,300 3.79
  NU2219E 95 170 43 2.1 2.1 286 370 3,300 3,800 4.14
  NU2220 100 180 46 2.1 2.1 258 340 3,500 4,100 4.57
  NU2220E 100 180 46 2.1 2.1 335 445 3,100 3,600 5.01
  NU2222 110 200 53 2.1 2.1 320 415 3,100 3,700 6.56
  NU2222E 110 200 53 2.1 2.1 385 515 2,800 3,300 7.4
  NU2224 120 215 58 2.1 2.1 350 460 2,900 3,400 8.19
  NU2224E 120 215 58 2.1 2.1 450 620 2,600 3,000 9.18
  NU2226 130 230 64 3 3 380 530 2,600 3,100 10.2
  NU2226E 130 230 64 3 3 530 735 2,300 2,700 11.8
  NU2228 140 250 68 3 3 445 635 2,400 2,800 12.9
  NU2228E 140 250 68 3 3 575 835 2,100 2,500 15.8
  NU222E 110 200 38 2.1 2.1 293 365 3,100 3,700 4.27
  NU2230 150 270 73 3 3 500 710 2,200 2,600 16.3
  NU2230E 150 270 73 3 3 660 980 2,000 2,400 19.7

A wide range of applications:

• agriculture and forestry equipment
• automotive and industrial gearboxes
• automotive and truck electric components, such as alternators
• electric motors
• fluid machinery
• material handling
• power tools and household appliances
• textile machinery
• two Wheeler.

Our Bearing Advantage:

1.ISO Standard

2.Bearing Small order accepted

3.In Stock bearing

4.OEM bearing service

5.Professional:20 years manufacture bearing

6.Customized bearing, Customer’s bearing drawing or samples accepted

7.Competitive price bearing

8.TT Payment or Western Union or PayPal

Our Company

Packaging Details 1 piece in a single box
50 boxes in a carton
20 cartons in a pallet
Nearest Port ZheJiang or HangZhou
Lead Time For stock parts: 1-5 days.
If no stock parts:
<200 pcs: 15-30 days
≥200 pcs: to be negotiated.


1.How do you make our business long-term and good relationship? 
– We keep good quality and competitive price to ensure our customers benefit ;
– We respect every customer as our friend and we sincerely do business and make friends with them,
  no matter where they come from.


2.Do you test all your goods before delivery?
– Yes, we have 100% test before delivery


3.What products does your company supply?
– Auto Bearings (Wheel Bearings, Wheel Hub Bearings, Clutch Bearings, Belt Tensioners and Water Pump Bearings etc. )    

-Industrial Bearings (Deep Groove Ball Bearings, Tapered Roller Bearings and Pillow Block Bearings).

Tips For Replacing a Belt Tensioner

When replacing a serpentine belt or automatic tensioner, you will need a special tool. This tool has a long, flat extension handle that allows you to place a socket onto the bolt and flats on the tensioner arm. The following are some tips to follow when replacing the belt or tensioner on your vehicle. To replace your belt or tensioner, you should start by checking the tensioner’s lubrication.

Serpentine belt

If you notice that the power steering or air conditioning are not working, you should check the serpentine belt tensioner. A malfunctioning serpentine belt tensioner can lead to a host of other issues. The belt may stretch, which can be caused by several factors. Over time, serpentine belt tensioners can also get worn down. Additionally, they can have a variety of other problems, including rust or dirt in the housing.
You can replace your serpentine belt by following the instructions found on your vehicle’s manual. Some tensioners attach to the engine via a single bolt. To remove and replace the belt, remove the old unit and the retaining bolt. Locate the locking pin in the engine and place the new tensioner over it. Use a torque wrench or hand tool to tighten the bolts. When installing the new tensioner, be sure to line up the mounting bolt holes with the mounting bolts. Once the tensioner is installed, test the tension by ensuring that the gauge is above the ribs. If it slides down, it is time to replace the tensioner.
Before you begin the process of replacing your serpentine belt, be sure to park your vehicle in a level area. Turn off the engine and chock both rear wheels before starting the process. Using a diagram from your vehicle’s repair manual can make the process easier, especially if you are a beginner. You can draw it in your hand, or refer to a repair manual to find out the exact location of the tensioner pulley.
If you notice that the belt is slipping or squealing while driving, it may be time to replace the serpentine belt tensioner. A worn-out belt can cause the belt to slip and can cause power steering, air conditioning, and alternator malfunctions. You should also check the belt tensioner regularly. The motor may stall or make a loud noise. These are all signs of worn-out serpentine belt.
A serpentine belt uses less space in the engine than a V-belt. It also provides more tension for the serpentine belt, which prevents it from running hot and squealing. Serpentine belts are manufactured to last for several hundred thousand miles. They are a must-have item for your car! So be sure to keep it maintained and properly adjusted! Then, you can be sure to have your car running smoothly and safely.
If you notice any of these symptoms, you should replace your serpentine belt tensioner. A serpentine belt tensioner is a simple self-10sioning device that is mounted on the front of the engine. These devices are usually easy to replace and are not complicated to install. You can find 1 at any parts store or online. When the time comes to replace your serpentine belt, don’t hesitate to get the parts you need from a local auto part store.

Idler pulley

The idler pulley and the belt tensioner are essential components of your car’s drivetrain. If any 1 of them fails, all of them must be replaced. This is because they were manufactured at the same time and most likely have the same number of miles on them. As a result, they can all fail within a few thousand miles of each other. Here are some of the symptoms that you should look for when inspecting your idler pulley or belt tensioner.
Idler pulleys are a common part of most cars. They play a vital role in the operation of the belt system by directing the belt’s path and providing additional contact with the pulley. The idler pulley is also responsible for turning the cooling fan in an air-cooled Corvair engine. Because of these functions, idler pulleys are often replaced with idlers that differ in size.
Idler pulleys are small, 2 to 4 inches in diameter and mounted on the front of the engine block. Their purpose is to create a constant amount of tension on the drive belt. When the idler pulley is worn out, the accessory drive belt may experience excessive vibration and squealing noises. You may wish to replace it as soon as possible. You can do so at AutoZone.
A worn or damaged idler pulley will require a replacement. The belt itself will not fall off the car unless the idler pulley is damaged. A squealing sound can be a sign of a broken spring. Alternatively, a mechanic can recommend a replacement based on the condition of the idler pulley. In most cases, idler pulleys are more durable than the belts and are therefore recommended for replacement.
You can also notice that the idler pulley is slipping or causing excessive noise. Its constant rotation wears the idler pulley and reduces the tension of the belt. This causes the belt to slip and may even tear off the engine. Ultimately, this could result in stalling. And if you notice the engine belt squealing or making excessive noises, you should consider replacing it.
An idler pulley for a belt tensioner are often confused. Though both of them are used in the same application, they differ in many ways. The tensioner is the 1 that receives pressure from the belts and moves them. The idler pulley is not attached to an adjustable bolt, and it can cause unusual noises. It might even make squealing or odd noises.

Spring tensioner

A spring belt tensioner is a solution to a loose belt. It features a strong torsion spring that reduces slack. These devices are designed to fit up to 6mm wide belts. They are highly reliable and durable. They are also suitable for applications where the engine speed is often fluctuating. Here’s how you can choose the best 1 for your vehicle. The spring in the tensioner should be in the proper position to keep the belt taut and free of slippage.
The RunRight tensioner is a durable, high-quality product that uses aluminum alloy. Its elastomeric inserts rely on highly elastic natural rubber for good shape memory and durability. Spring tensioners are easy to install and maintain. They are designed for both axial and helical drives. They feature detailed technical drawings and 3-D models to help you determine the best 1 for your application. To choose a spring tensioner, visit our website.
A worn bushing in the tensioner pulley or a loose pivot arm can result in excessive noise, vibration, and premature belt failure. In addition, worn springs cannot maintain proper tension. Over time, they lose tension. The pulley arm itself can also become damaged, preventing it from rotating properly. If these problems occur, you’ll need to replace the spring tensioner. If you don’t see any signs of wear, check your mounting bracket and tensioner.
A worn pivot bushing can cause the tensioner arm to misalign, leading to excessive back and forth sway. It may also cause the tensioner to jam, which means the belt is too long or too short. If you notice excessive wobble, you should replace the spring tensioner. A faulty tensioner may also be causing excessive oscillation in the pulley. To determine if the spring tensioner is too weak or jammed, check the belt’s length by using a breaker bar or socket with a long handle ratchet.
When it’s time to replace your serpentine belt, don’t forget to replace the belt tensioner. The tensioner protects other components from premature failure. It is a relatively inexpensive repair. It should be replaced as part of a larger multi-ribbed belt. It also provides protection for other components of the drive system. In addition to its protection and performance, the tensioner is inexpensive and relatively easy to replace.
It’s vital to check the tensioner and idler pulleys to make sure the system is aligned properly. If they don’t align, the belt will slip and cause premature wear. Alternatively, the tensioner may have too much tension, overloading the shaft bearings and causing premature failure in other parts. You should also check the idler pulleys for noise as well, since these are engine-driven accessories.

China best Nu315 Stainless Steel Cylindrical Roller Bearings     with high qualityChina best Nu315 Stainless Steel Cylindrical Roller Bearings     with high quality