China best Gcr15 L Double Row Cylindrical Roller Bearings Nn3034K Nn3032K Nn3030K for Speed Reducer with Hot selling

Product Description


Model Gcr15 l double row cylindrical roller bearings NN3034K NN3032K NN3030K For speed reducer
  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, 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).

How to Tell If Your Timing Belt is Worn Out

The timing belt is a component of your engine that consists of special materials that coordinate the rotational movement of your camshaft and crankshaft. This synchronization is vital for sustainable combustion. In addition to being vital for the proper operation of your engine, the belt is also responsible for setting the pace at which it will turn. Timing belts must be extremely strong and resilient, able to maintain a high degree of synchronicity, and operate effectively even in the most severe conditions.

Problems caused by a worn-out timing belt

A worn-out timing belt can cause misfiring. Because the belt controls the movement of the pistons in the engine, it’s critical that it’s functioning properly. Misfires can cause serious engine damage and should be fixed as soon as possible. But how do you know if your timing belt is worn out? Here are 3 of the most common symptoms of a worn-out belt.
A car engine will misfire if the timing belt is broken, which could lead to severe damage. A broken belt may also cause excessive smoke to be produced by the exhaust system. If these symptoms are present, it’s time to take the car in for a timing belt replacement. A worn-out belt will affect the performance of your car. It will also affect the engine’s starting speed. When it’s time to replace it, you should do it now to avoid future problems.
Misfiring and premature cylinder closing are 2 of the most common symptoms of a worn-out timing belt. A worn-out belt can cause permanent engine damage. Because the timing belt contains teeth that grip the gears, it can slip. If the timing belt slips, the teeth can fall into the gears, causing the engine to misfire. Worn-out timing belts can also cause the engine to stall.
Engine ticking is another common sign of a worn-out timing belt. It can also be caused by low oil pressure. When oil pressure drops, the timing belt will become loose and cause a ticking sound. You should replace the timing belt as soon as it’s damaged. But it’s not enough if you don’t notice any of these signs right away. If the ticking sound continues, you’ll probably have an engine-related problem.

Types of timing belts

Timing belts are made of special materials that help the engine synchronize the crankshaft’s rotation with the camshaft’s. This precision is vital for the combustion process, as it ensures the proper opening and closing of the valves within the combustion chamber. The belts control the engine’s pace, which is why they must be strong enough to maintain synchronicity and operate at high speeds. However, timing belts do not come cheap, so there are several factors that you should be aware of before buying one.
First, timing belts come in different pitch sizes. A typical metric pitch is 5 millimeters, but some manufacturers use a higher or lower pitch. The pitch determines how much tension the belt will be able to carry and whether or not it will wear out prematurely. Other pitch sizes are more common. Timing belts come in 3 different widths, and they all have different tooth profiles. To find the right 1 for your engine, you need to know the pitch.
Modified curvilinear belts are made of 2 different types of materials. They combine the strengths of trapezoidal and curvilinear belts. The outer surface of these belts has a steeper angle than the belt’s teeth, which means that the power transmitted by the motor is much higher. Consequently, they are the primary choice for high-performance industrial applications. A synchronous timing belt is ideal for applications where precise synchronization of the driven and driver shafts is important.
Spliced and welded timing belts are used in many general applications. These belts typically have no joints or weak points and are more durable. These types of timing belts are also made with a smooth back and sealed edges. If you need a custom length or shape, these can also be manufactured. Then, you can order them for your exact measurements. When you need a new timing belt, you can simply ask for a quote and order 1 online.

Common problems

Timing belts are a crucial part of your car’s drive system, and improper installation can cause a whole host of issues. It is also susceptible to crimping and premature wear. In either case, it is vital to take action early to prevent excessive engine wear and extend the life of the timing belt. Here are some common problems with timing belts. You may be surprised to learn that these problems are often caused by common car maintenance practices.
Regardless of the cause of the problem, a worn or faulty timing belt will affect the engine’s timing. This may result in misfires or excessive exhaust release. Engine misfiring is a serious sign that something is amiss. Depending on the extent of the problem, it could even lead to engine damage. If you experience erratic performance or excessive smoke, it’s likely the timing belt is faulty. Here are some common problems with timing belts and their causes.
Engine misfire is a common warning sign that your timing belt is wearing. This occurs when the timing belt slips off the gears or camshaft, causing the cylinder to open too early. If you notice this problem, take immediate action by visiting your mechanic immediately. Moreover, timing belt failures can cause a large amount of damage to your car’s engine, so it is essential to have your timing belt replaced in time.
Improperly adjusting the tension of your timing belt can also lead to serious problems. This can cause excessive wear on your engine’s pistons and valves, and damage the engine. Ultimately, a damaged timing belt may result in an expensive engine rebuild. While this might seem like a good option, it is not always the most practical solution. Ultimately, your car’s timing belt will wear down if you don’t fix these problems immediately.

Symptoms of a worn-out timing belt

If your car’s engine makes a high-pitched squeal when you start or run it, you may be experiencing a worn-out timing belt. You can check the belt by opening the hood and listening closely to the noise. You may also notice uneven RPM counts. The squealing sound can be caused by a number of factors, such as low oil pressure, engine lubrication problems, or even the timing belt.
If your car is exhibiting these symptoms, then it’s time for a replacement. A timing belt breaks down while your engine is running, and this can cause major engine damage. The timing belt is connected to the crankshaft and camshaft by a belt that keeps the 2 parts in sync rotation. When the timing belt wears out, it may cause a jump in the belt’s tooth, causing cylinders to open and close randomly, resulting in blow-by.
A timing belt is crucial to the functioning of your car’s engine. It synchronizes the engine rotation system and opens and closes the valves at the right time. Because it is subject to great forces inside the engine, the belt must be replaced at some point. Every vehicle needs a new timing belt at least once in its lifecycle. But what are the symptoms of a worn-out timing belt?
The timing belt is crucial to your car’s performance, so if you notice any of these signs in your vehicle, you should make an appointment with a qualified mechanic. The best way to tell if your timing belt needs to be replaced is to visually inspect the belt. You can visually inspect the belt while the engine is off, and if you notice it’s sagging, you should replace it.

When to replace a timing belt

A timing belt is an essential part of your vehicle’s engine and is responsible for synchronizing the rotation system, allowing the valves to open and close at the correct time. Due to its constant use and great forces inside the engine, timing belts must be replaced at some point. The recommended interval for timing belt replacement is anywhere from 60,000 to 150,000 miles. In most cases, timing belt replacement is recommended for vehicles between 6 and 10 years old.
Costs for a timing belt replacement can vary widely depending on the make and model of your vehicle. The labour and parts used for timing belt replacement are relatively inexpensive, but you’ll have to remove several parts of your engine to access them. Timing belt replacement also involves replacing the water pump, which is driven by the timing belt. These other parts will be replaced with new ones, but the overall cost of the repair depends on the type of car you drive.
A timing belt is a thin, rubber piece that runs along the front of the engine. It’s responsible for synchronizing the valves and camshafts and is an important component of an engine. The belt’s custom teeth make it easy to see when it’s time to replace your car’s timing belt. Oftentimes, car manufacturers recommend timing belt replacement every 2 to 4 years or 50,000 miles, and they’re not the only ones who recommend it.
A professional mechanic can replace the timing belt and water pump in 1 service, saving you both time and money. Timing belt replacement is an intricate task and can last anywhere between 4 and 8 hours, depending on the make and model of your car. However, it is worth it if you can get your vehicle into a garage or repair shop sooner rather than later. You can save a lot of money on labor costs by replacing your timing belt and water pump yourself.

China best Gcr15 L Double Row Cylindrical Roller Bearings Nn3034K Nn3032K Nn3030K for Speed Reducer     with Hot sellingChina best Gcr15 L Double Row Cylindrical Roller Bearings Nn3034K Nn3032K Nn3030K for Speed Reducer     with Hot selling