Good Quality NU 318 EM Cylindrical Roller Bearings 90x190x43mm

Description,

I. Select according to the working conditions of the bearing
Working temperature
Bearings that work at room temperature use chrome bearing steel. Chrome bearing steel is also used for working temperatures above 150 ° C and below 250 ° C, but requires special heat treatment (200 ° C or 300 ° C tempering).
2. The magnitude of the impact load
Bearings bearing strong impact loads generally do not use chrome bearing steel, and most use high-quality carburized structural steel, impact-resistant tool steel, or quenched and tempered structural steel.
3. Contact with the medium
Bearings used in corrosive media must be made of corrosion-resistant steel or alloy steel with good corrosion resistance.

FAG cylindrical roller bearing, Specification,

Features,

Difference between cylindrical roller bearings NU and NJ
NU, there are two double ribs, which are on the outer ring and no ribs on the inner ring. Allow axial

displacement in two directions relative to the bearing housing
NJ, double ribs on outer ring, single ribs on inner ring. So you can make axial fixation in one direction
What is the difference between nj318 and nup318 bearings
Both are cylindrical roller bearings:
NJ shape: the outer ring has double ribs, which cannot be separated from the roller, and the inner ring

has a single rib, which can only fall freely from one side;

NUP shape: The outer ring has double ribs, which cannot be separated from the rollers. The inner ring

has a single rib, which can freely fall off from one side, but the inner ring has a positioning ring on one side,

which can be removed.

and also:

N-shape: The inner ring has double ribs, which cannot be separated from the rollers, and the outer ring has

no ribs, which can freely fall off from both sides;

NU shape: The outer ring has double ribs, which cannot be separated from the rollers, and the inner ring has

no ribs, and can be freely dropped from both sides;

NF type: the inner ring has double ribs, which cannot be separated from the roller, and the outer ring has a single

rib, which can only fall freely from one side;
Double-row also: NN-shaped, NNU-shaped and four-row cylindrical roller bearings. Cylindrical roller bearings

generally use steel stamped cages, brass turning cages for larger sizes or high-speed rotation, and double-row

or four-row cylindrical roller bearings use pin cages to extend bearing life.

If you need bearing price list, welcome contact us.