+8618753115023
alita@sgsabearing.com
Search
enLanguage
Home/Products/ Roller Bearing/

Needle Roller Bearing

Needle Roller Bearing
Your Leading Needle Roller Bearing Supplier

 

SUN AUTOMATION GROUP LIMITED was founded in 1986 and had been focusing on exporting high bearing ever since. We have a variety of roller bearing styles and sizes, including Cylindrical roller bearing, Needle roller bearing, Spherical roller bearing, Tapered roller bearing, Thrust roller bearing, Combined roller bearing, Toroidal roller bearing, Barrel roller bearing, ect. We work with professional bearing manufacturers and have invested over 300 million in upgrading product formulas. We strive to be a world-class bearing provider.

 

 
First 123 Last 1/3
 
Why Choose Us?
 
 
 

Rich Experience

SUN AUTOMATION GROUP LIMITED specializes in delivering professional bearing solutions, leveraging nearly 40 years of experience in bearing support and industrial services to serve its customers effectively.

 
 

Production Capacity

Our warehouse has one of the largest inventories. We have an annual output of 5 million sets of bearings. We guarantee direct shipments, timely delivery, and a single source of supply.

 
 

Production Market

Our products have been exported to North America, Europe, the Middle East, Brazil, South Africa, and Mexico and were well acknowledged by clients worldwide.

 
 

Professional Service

We have a 7*24 hours professional sales consultant team that can respond to your needs as quickly as possible and provide the fastest transportation method to bring you a high-quality and low-cost purchasing experience.

 

 

Types of Needle Roller Bearing

 

RNA 4822 Needle Roller Bearing

RNA 4822 single row needle roller bearings consist of an outer ring, needle rollers and cage assembly.

FC68337 Needle Roller Bearing

FC68337 needle roller bearings are a less common type of automotive bearings and are commonly used in small cars.

RNA 4822 Needle Roller Bearing

 

 

Specifications of Needle Roller Bearing

 

 

Bearing name

RNA 4838

Product classification

Needle Roller Bearing

Bore diameter

210 mm

Outside diameter

240 mm

Width

50 mm

Basic dynamic load rating

220 KN

Basic static load rating

710 KN

Fatigue load limit

73.5 kN

Reference speed

1900 r/min

Limiting speed

2200 r/min

Mass bearing

3.21 kg

 

K220X230X42 Needle Roller Bearing

 

Structure of Needle Roller Bearing

A typical needle roller bearing comprises several essential components. These include an outer ring, an inner ring, an assembly of needle rollers, and a cage. The outer and inner rings serve as the bearing's raceways, providing a guided pathway for the motion of the needle rollers. The needle rollers themselves are held in place by the cage, which ensures they are evenly spaced.

The cylindrical shape of these rollers is a key design element, facilitating a larger contact area and, consequently, a more even distribution of loads, reducing wear and tear.

 

Features of Needle Roller Bearing
 
 

High Load Capacity

Despite their small size, needle bearings can support high radial loads. Their elongated rollers distribute weight efficiently across a larger contact area, ensuring reliable performance in demanding conditions. This feature offers an advantage in applications like automotive and aerospace where restrictions for space are necessary along with higher load capability.

 
 
 

Low Cross-Sectional Height

One of the standout features of needle bearings is their minimal height. This slim design allows them to fit into tight spaces, where other bearings simply wouldn't be an option. For example, in compact machinery or intricate assemblies, needle bearings help engineers keep designs streamlined without compromising functionality.

 
 
 

Compatibility With Compact Designs

Needle bearings thrive in setups where compactness is key. Whether it's a small gearbox or a confined motor, they deliver the required support while saving space. Their ability to slot into narrow gaps without sacrificing load-carrying capacity makes them a go-to choice for engineers aiming for precision compact designs.

 

 

Precautions for Using Needle Roller Bearings
RNA 4822 Needle Roller Bearing

Cleanliness

Ensure that the bearings and the environment in which they are stored are clean and free from dust, dirt and moisture. Contamination can damage the bearings.

RNA 4822 Needle Roller Bearing

Packaging

Store the rolling bearings in their original packaging or in special storage containers that protect them from dust, dirt and moisture. The packaging should be sturdy to protect the bearings from damage.

NA22035 Needle Roller Bearing

Extreme temperatures Rolling bearingsStorage location

Store the bearings in a dry place with a constant temperature and humidity. Avoid locations with strong temperature fluctuations or direct sunlight.

K220X230X42 Needle Roller Bearing

Reverse stacking of rolling bearingsStacking

The bearings should only be stacked in their original packaging and only high enough to prevent them from falling over. Even when moving them, you should only carry so many that no bearings fall down or damage your back. The bearings must be protected from knocks, falling etc.

 

Storage Conditions of Needle Roller Bearing

 

 

The relative humidity of the storage room should not exceed 60%, and the temperature difference should not be too large. The bearings in the original packaging can be stored for several years.

 

Sealed bearings or bearings with dust covers, after long-term storage, the lubrication characteristics of the grease filled in the bearings may be reduced.

 

The storage room should also be anti-vibration and shaking. Bearings that are not stored in the original packaging should be properly stored. It is strictly forbidden to put the bearings together with corrosive things to prevent corrosion and pollution.

 

Payment Terms

 

 

T.T with 30% downpayment, 70%before shipment.

Paypal or West Union also accept.

 

 

Packaging and Shipping

 

 

Packaging:

Wrapped by proctective film;

Packed by standard import & export wooden cases or palletization.

Shipping:

By express, air, sea, railway.

 

20230420145157ba1f20e312cc4b7abb6c7b53fb35146f.jpeg (1269×952)

 

FAQ

 

Q: Why use a needle roller bearing?

A: Like all bearings, they are used to reduce the friction of a rotating surface. Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load.

Q: How to fit a needle roller bearing?

A: Drawn cup needle roller bearings should be pressed into the housing bore using a mounting dolly. An O-ring provides a simple means of retaining the bearing on the mounting dolly. The stamped side (side face with the designation) should abut the flange of the mounting dolly.

Q: Where are needle roller bearings used?

A: Needle bearings are small, lightweight bearings that are capable of withstanding heavy load capacities. They can often be found in many automotive and aerospace components, from rocker arm pivots to compressors.

Q: Are needle roller bearings radial or axial?

A: Needle roller bearings can carry high radial loads due to the large contact area of the rolling elements; they are not designed to carry axial loads. Some needle bearings are equipped with an inner race, but some have no inner race. In cases where no inner race is present, the shaft forms the inner race.

Q: How are needle roller bearings measured?

A: To measure a needle bearing in a good way, you'll need to determine its width(W), inner diameter(ID), and outside diameter(OD). To get an accurate reading, measure at the widest point for OD and measure at the narrowest point for ID and measure W between the two bearing rings.

We're well-known as one of the leading needle roller bearing manufacturers and suppliers in China. If you're going to buy high quality needle roller bearing with competitive price, welcome to get more information from our factory.

010 45 1800 Bearing, Bearing Weight B7200 E T P4S, 110BNR19XTRDFLP4

(0/10)

clearall