Needle Roller Bearing
Needle roller bearings（sometimes called “needle bearings”） are bearings with cylindrical rollers whose diameter is small in relation to their length. The improved roller/raceway profile prevents stress peaks and thus extends bearing life.
Deruna Bearing offers needle roller bearings in many different designs, series and various sizes, which makes them suitable for a wide range of operating conditions and applications.
Parameters of Needle Bearing Size
| New domestic models | Old domestic model | Inner diameter (mm) | Outer diameter (mm) | Width(mm) | Cr(kN) | Cor(kN) | Grease lubrication speed (r/min) | Oil lubrication speed (r/min) | Weight (kg) |
| NAV4003 | 4074103 | 17 | 35 | 18 | – | – | – | – | 0.098 |
| NAV4004 | 4074104 | 20 | 42 | 22 | – | – | – | – | 0.175 |
| RNAV4016 | 4084116 | 100.3 | 125 | 45 | – | – | – | – | 0 |
| RNAV4015 | 4084115 | 92.7 | 115 | 40 | – | – | – | – | 1.025 |
| RNAV4014 | 4084114 | 88 | 110 | 40 | – | – | – | – | 0.982 |
| RNAV4013 | 4084113 | 80.3 | 100 | 35 | – | – | – | – | 0.692 |
| RNAV4012 | 4084112 | 74.6 | 95 | 35 | – | – | – | – | 1.025 |
| RNAV4011 | 4084111 | 69.8 | 90 | 35 | – | – | – | – | 0.645 |
| RNAV4010 | 4084110 | 62.1 | 80 | 30 | – | – | – | – | 0.426 |
| RNAV4009 | 4084109 | 57.4 | 75 | 30 | – | – | – | – | 0.39 |
| RNAV4008 | 4084108 | 51.6 | 68 | 28 | – | – | – | – | 0.304 |
| RNAV4007 | 4084107 | 45.9 | 62 | 27 | – | – | – | – | 0.259 |
| RNAV4006 | 4084106 | 40.1 | 55 | 25 | – | – | – | – | 0.193 |
| RNAV4005 | 4084105 | 33.5 | 47 | 22 | – | – | – | – | 0.129 |
| RNAV4920 | 4084920E | 115 | 140 | 40 | – | – | – | – | 0 |
| RNAV4919 | 4084919E | 110 | 130 | 35 | – | – | – | – | 0 |
| RNAV4918 | 4084918E | 105 | 125 | 35 | – | – | – | – | 0 |
| RNAV4916 | 4084916E | 90 | 110 | 30 | – | – | – | – | 0 |
| RNAV4914 | 4084914E | 80 | 100 | 30 | – | – | – | – | 0 |
| RNAV4912 | 4084912E | 68 | 85 | 25 | – | – | – | – | 0 |
| RNAV4910 | 4084910E | 58 | 72 | 22 | – | – | – | – | 0 |
| RNAV4909 | 4084909E | 52 | 68 | 22 | – | – | – | – | 0 |
| RNAV4908 | 4084908E | 48 | 62 | 22 | – | – | – | – | 0 |
| RNAV4907 | 4084907E | 42 | 55 | 20 | – | – | – | – | 0 |
| RNAV4906 | 4084906E | 35 | 47 | 17 | – | – | – | – | 0 |
| RNAV4905 | 4084905E | 30 | 42 | 17 | – | – | – | – | 0 |
| RNAV4904 | 4084904E | 25 | 37 | 17 | – | – | – | – | 0 |
| RNAV4903 | 4084903E | 22 | 30 | 13 | – | – | – | – | 0 |
| RNAV4902 | 4084902E | 20 | 28 | 13 | – | – | – | – | 0 |
| NA6901 | 6544901 | 12 | 24 | 22 | 16.3 | 21.7 | 27000 | – | 0.045 |
| NA6902 | 65449O2 | 15 | 28 | 23 | 18.4 | 27.1 | 22000 | – | 0.062 |
| NA6903 | 6544903 | 17 | 30 | 23 | 18.9 | 29 | 20000 | – | 0.067 |
| NA6904 | 65449O4 | 20 | 37 | 30 | 35.4 | 48.9 | 17000 | – | 0.137 |
| NA6905 | 6544905 | 25 | 42 | 30 | 40.1 | 60.7 | 15000 | – | 0.162 |
| NA6906 | 6544906 | 30 | 47 | 30 | 42.7 | 69 | 13000 | – | 0.186 |
| NA6907 | 6254907 | 35 | 55 | 36 | 51.4 | 85.1 | 11000 | – | 0.297 |
| NA6908 | 6254908 | 40 | 62 | 40 | 66.7 | 115 | 9400 | – | 0.415 |
| NA6909 | 6254909 | 45 | 68 | 40 | 70.7 | 127 | 8800 | – | 0.496 |
| RNA6901 | 6644901 | 12 | 24 | 22 | 16.3 | 21.7 | 27000 | – | 0.03 |
| RNA6902 | 6644902 | 15 | 28 | 23 | 18.4 | 27.1 | 22000 | – | 0.038 |
| RNA6903 | 6644903 | 17 | 30 | 23 | 18.9 | 29 | 20000 | – | 0.04 |
| RNA6904 | 6644904 | 20 | 37 | 30 | 35.4 | 48.9 | 17000 | – | 0.096 |
| RNA6905 | 6644905 | 25 | 42 | 30 | 40.1 | 60.7 | 15000 | – | 0.112 |
| RNA6906 | 6644906 | 35 | 47 | 30 | 42.7 | 69 | 13000 | – | 0.126 |
| RNA6907 | 6354907 | 42 | 55 | 36 | 51.4 | 85.1 | 11000 | – | 0.182 |
| RNA6908 | 6354908 | 48 | 62 | 40 | 66.7 | 115 | 9400 | – | 0.247 |
| RNA6909 | 6354909 | 52 | 68 | 40 | 70.7 | 127 | 8800 | – | 0.334 |
| NA6910 | 6254910 | 50 | 72 | 40 | 74 | 140 | 7900 | – | 0.497 |
| NA6911 | 6254911 | 55 | 80 | 45 | 86.7 | 165 | 7300 | – | 0.711 |
| NA6912 | 6254912 | 60 | 85 | 45 | 90.8 | 179 | 6800 | – | 0.765 |
| NA6913 | 6254913 | 65 | 90 | 45 | 98.4 | 190 | 6400 | – | 0.798 |
| NA6914 | 6254914 | 70 | 100 | 54 | 132 | 271 | 5700 | – | 1.37 |
| NA6915 | 6254915 | 75 | 105 | 54 | 135 | 283 | 5400 | – | 1.44 |
| NA6916 | 6254916 | 80 | 110 | 54 | 140 | 304 | 5100 | – | 1.46 |
| NA6917 | 6254917 | 85 | 120 | 63 | 165 | 390 | 4600 | – | 2.29 |
| NA6918 | 6254918 | 90 | 125 | 63 | 167 | 403 | 4400 | – | 2.31 |
| NA6919 | 6254919 | 95 | 130 | 63 | 173 | 428 | 4200 | – | 2.43 |
| NA6920 | 6254920 | 100 | 140 | 71 | – | – | – | – | – |
Cooperation Brands
Types of Needle Roller Bearing
- drawn cup needle roller bearings
- combined needle roller bearings
- heavy duty needle roller bearings
- thrust needle roller bearings
- needle roller bearing with inner ring
- stainless steel needle roller thrust bearings
- cam follower needle roller bearing
- ceramic needle roller bearings
- double row needle roller bearing
- cylindrical needle roller bearing
- drawn cup needle roller bearings with closed end
- solid needle roller bearings
- drawn cup roller clutch
- sealed needle bearings
- caged needle roller bearing
- loose needle roller bearings
- flat needle roller bearing
- split needle roller bearing
- linear needle bearing
- needle thrust bearings and washers
- connecting rod needle roller bearing
- needle roller bearing without inner ring
drawn cup needle bearing
Drawn cup needle roller bearings have a unique outer ring configuration with cage and full complement rollers. Drawn cup roller bearings are normally used in applications where the housing bore cannot be used as a raceway for needle roller and cage assemblies, but where a very compact and economical bearing arrangement is required. These easy-to-fit bearings offer the thinnest outer rings of all rolling bearings as well as high load capacity, high terminal speeds and great wear resistance.
Combined Needle Roller Bearings
- Combined needle roller thrust bearing
is a bearing unit composed of radial needle bearing and thrust bearing components. - Features: compact structure, small volume, high rotation accuracy, can bear a certain axial load while bearing a high radial load. The product structure is diverse, adaptable and easy to install.
- Applications: It is used in various mechanical equipment such as machine tools, metallurgical machinery, textile machinery and printing machinery, and can make the mechanical system design very compact and dexterous.
caged needle roller bearing
Caged roller bearings is an easy-to-operate bearing with high load capacity despite its small dimensions. The unique cage structure guides the needle rollers for effective lubrication even at high speeds.
caged needle bearing has a controlled profile bulge that reduces stress concentrations at the roller ends due to moderate misalignment/shaft bending, thereby extending bearing life.
stainless steel needle roller bearings
As a needle roller bearing supplier, we produce stainless needle bearings with excellent corrosion resistance. They are used in medical equipment, food machinery, packaging machinery and other industries that require high corrosion resistance.
Solid Needle Roller Bearings
Solid needle roller bearings offer maximum load capacity and high precision in a compact space. Suitable for a wide range of operating conditions, these bearings have rings made from carefully selected vacuum-deaerated bearing steel or carburised steel and precision-ground and heat-treated rollers. Lightweight and extremely strong, the cages guide the rollers accurately and smoothly.
Strengths and characteristics of Needle Roller Bearing
- Needle roller bearings have a large carrying capacity and are suitable for supporting structures with limited installation dimensions.
- The surface of the journal is hardened as the rolling surface, and the bearing is fitted into the seat hole with a press fit, and there is no need for it to be axially positioned.
- The bearing should be injected with an appropriate amount of grease before installation.
- Usually, no relubrication is required after assembly (BK type bearings are used in the support of the journal without the protruding end, the end face is closed for sealing, and can withstand small axial movement.)
- Needle roller bearings are roller bearings with cylindrical rollers that are thin and long relative to their diameter. This type of roller is called a needle roller.
- Needle roller bearings are equipped with thin and long rollers (roller diameter D≤5mm, L/D≥2.5, L is the length of the roller), so the radial structure is compact, especially suitable for the support structure with limited radial installation size .
Drawn cup needle roller bearings
- Drawn cup needle roller bearings are needle roller bearings with a thin drawn cup outer ring.
Features: The section height is very low and the load bearing capacity is high. - Place: It is mainly used for bearing configuration with compact structure and low price, and the inner hole of the bearing box cannot be used as the raceway of the needle roller cage assembly. Bearings and bearing housings must be installed with an interference fit.
- Drawn cup needle roller bearings generally do not have an inner ring.
Solid Ring Needle Roller Bearings
- Composition: One or two ferrules and a needle roller set with a cage.
Classification: It can be divided into bearings with inner ring or without inner ring.
Features: Solid ferrule needle roller bearings have smaller volume and higher load capacity. - Applicable places: Solid ferrule needle roller bearings can meet the requirements of light weight, small space occupation and high transmission power.
Combined Needle Roller Bearings
- Combination: Needle roller bearing is a bearing unit composed of radial needle roller bearing and thrust bearing components.
- Features: compact structure, small volume, high rotation accuracy, can bear a certain axial load while bearing a high radial load. The product structure is diverse, adaptable and easy to install.
- Applications: It is used in various mechanical equipment such as machine tools, metallurgical machinery, textile machinery and printing machinery, and can make the mechanical system design very compact and dexterous.
Use of needle roller bearing
- Needle roller bearings have been around for more than 60 years, but with the general trend towards reducing weight, space and energy consumption, they have become the bearings of choice for many important applications.
- Needle roller bearings are most commonly used in automotive, agricultural and construction components, including compressors, transmissions, gearboxes, pumps, torque converters, suspensions, U-joints and rocker arm pivots. They are also found in household appliances such as portable power tools, pump clutches and spindles.
- Needle roller bearings are a good choice if you need lightweight, cost-effective and compact components to solve any friction problems. For more information on needle roller bearing types, needle bearing size, needle bearing price and what suits your unique application, call our helpful team today!
Shipping & Package of Needle roller bearing
Shipping port: Qingdao/Tianjin
Supply Ability: 100,000 pieces per month
Package：
- Plastic bag + single box + carton + plywood pallet
- Neutral industrial packaging + neutral carton packaging + pallet
- According to customer requirements
Factory and Warehouse Display
We stock all major brands of bearings, including：SKF needle bearing,INA needle bearing;NTN needle bearing;IKO needle bearing;schaeffler needle roller bearing;koyo roller bearing;timken needle bearings.We also supply custom needle bearings.If you want to buy needle bearings, please contact us, we will use the highest quality needle roller bearing material and provide you with the best needle roller bearing price
needle bearings for sale
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FAQ
Due to their internal design, ball bearings cannot usually be disassembled down to the component level; therefore, they cannot usually be refurbished.
Solid base shells are manufactured without cavities and fillers; they are stronger than hollow bases, and there are no traps for bacteria and fungi to grow. In the thermoplastic shell, the sturdy base will not break under steam or high-pressure washing. The hollow base saves material and weight to reduce costs. Some people use epoxy resin to backfill the hollow base to eliminate the trap of bacteria breeding, but this will not increase the strength, will cause the installation surface to be uneven, and water will seep between the shell and the filling material, causing cracking.
Use particularly thermally stable bearing rings, larger internal clearance (C4), specially selected lubricants that will not decompose at high temperatures, and zinc anodized flinger. There are two basic versions of our high temperature bearings. The suffix “C4HR5” represents the bearing that can withstand 400°F, and the suffix “C4HR23” represents the bearing that can withstand 450°F.
For critical applications such as pulp and paper processing, printing and packaging, material tearing can cause expensive downtime due to excessive torque and vibration.
The two biggest factors affecting the starting and running torque of the bearing are the seal design and lubricant selection. The shaft and bearing seat fit, component accuracy and surface finish, and retainer design also have some influence.
In higher speed applications, non-contact sealing devices are usually required to minimize operating torque and heat generation, so oil baffle rings and secondary sealing devices are usually required. Flowing oil lubrication systems are usually the best solution.
After proper installation, most seated bearings only need to be relubricated regularly with a small amount of grease and checked to ensure that they operate at low temperatures, quietness, and sufficient accuracy.
This depends on many factors, such as the application’s load conditions, operating speed, duty cycle, temperature, and operating environment. The technical information section of this website provides some basic information. Our engineers can help you determine more specific theoretical life calculations.
When noise and/or operating temperature increase or operating accuracy decreases, bearings should be replaced.
Lubricant of choice
Lubrication joint type or location
Sealing materials and design options
Dimensions, suitable for housing or insert
Fixing screw options
Paint the shell in any color
Too little or too much lubricant
Incorrect lubricant type
Poor bearing installation
Improper internal clearance
Excessive load and/or speed
Extreme temperature
Pollution
Movement between mounting surfaces
The noise emitted by the bearing may be caused by a combination of one or more factors, such as insufficient working clearance, excessive working clearance, changes in working clearance due to temperature, damage to the contact area, contamination, inappropriate lubricants or The raceway is damaged.
Lubricants have five basic functions for bearings:
Reduce friction
Reduce wear
Reduce temperature rise
Minimize corrosion
Seal contaminants
We do not recommend mixing grease. Mixing incompatible greases will cause the mixture to harden, preventing it from releasing any oil. Mixing incompatible greases can also soften the mixture, which releases all the oil. In either case, the mixture will not be able to properly lubricate the bearing. We strongly recommend using the same type of grease originally provided with the bearing.
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