What is the difference between cylindrical roller bearings and needle roller bearing

Cylindrical roller bearing
Belong to precision bearing cylindrical roller bearing, precision of sorting ring guard guide roller mail axis, composed of cage, roller and guide shaft ring, can be separated from the other bearing ring, the type of bearings is separable.
Only inner and outer ring with penal single bearing can follow the constant axial load of smaller or larger intermittent axial load;
Compared with other tired socket in the shape of the same size, this kind of bearing with high load, at the end of the noise and the characteristics of high speed and roller and ring guard friction small, suitable for high speed spinning.Very applicable to all kinds of precision machinery and mining mill machinery.But to cooperate with such bearing shaft, roller and other related parts to precision machining.
May according to the ring presence of guard, NU, NJ, NUP, N, NF, such as single row cylindrical roller bearings, double row cylindrical roller bearing and NNU, NN and other.The bearing inner ring and outer ring is separable structure.
No guard of cylindrical roller bearing inner ring or outer ring, internal ring and outer ring can be to relative axial movement, so can be used as free end bearing.The one side of the inner ring and outer ring with double guard, on the other side of the ring has a single guard cylindrical roller bearing, can withstand a certain degree of axial load in one direction.General use of stamping steel cage, cage or copper alloy car system entities.
But there are also part of the use of polyamide forming keep frame.

Needle roller bearing
Needle roller bearing is a cylindrical roller of roller bearings, relative to its diameter, roller is thin and long.This is called needle roller.Although has a small cross-section, bearing still has high load capacity, needle bearing with fine and long roller, so the radial structure is compact, its diameter and load capacity at the same time, with other types of bearing outside diameter to a minimum, especially suitable for the limited size of the radial installation supporting structure.
So the needle roller bearing is mainly used in place with limited space, so in the automotive, motorcycle, textile machinery has been widely applied on.And inner ring is equipped with the needle, namely if the shaft hardness, roughness and meet the requirements, can not inner ring is inherently limited (space), but if the shaft processing degree is lower, or more soft, you will need to match inner ring raceway.

Differences
1. Cylindrical roller bearing, rolling body is a conical roller;
2. Relative needle roller bearing, cylindrical roller bearing structure is larger;
3. Single row cylindrical roller bearing points double row and column, applied to different environments and situations;
4. Cylindrical roller bearings are generally choose high quality bearing steel and special steel;And thin needle roller bearing is chosen steel plate stamping.
Applicable occasions
In mechanical design, generally make sure of the size of the shaft, then choose rolling bearing according to the size of the shaft.However, when the diameter of the bearing in the machine direction is restricted, choose needle roller bearing, special light and ultra light series of ball or roller bearings;When the bearing in the axial position of the machine is restricted, can choose a narrow, narrow range of ball or roller bearings.
Centripetal needle roller and cage assembly, stamping outer ring needle roller bearing, entity ferrule needle roller bearings, thrust needle roller bearing is widely used in automotive related information and engineering mechanical transmission system, steering system, the place such as motorcycle engine connecting rod, used the space is little, large carrying capacity.Needle bearing with fine and long roller, so the radial structure is compact, its diameter and load capacity at the same time, with other types of bearing outside diameter to a minimum, especially suitable for the limited size of the radial installation supporting results.
Supplier
BMB Bearings ia a precision bearing enterprise specializing in the production of double row angular contact ball bearings, double row deep groove ball bearings, and single row angular contact ball bearings. The company is a end bearings manufacturer enterprise producing double row angular contact ball bearings in China. Its models cover 3200 series, 3300 series, 3000 series, 3800 series, 3900 series, etc. The product accuracy grades are: P0, P6, P5, P4, and the products are widely applicable.The company also maintains an extensive inventory of superior roller bearings, ball bearings, Deep Groove Ball Bearings, Selfaligning ball bearing, Angular Contact Ball Bearings, Thrust Ball Bearings and much more.