NJ307 EMC3 NJ 307 ECP Cylindrical Roller Bearings, Single Row
35x80x21mm Theoretical Net Weight 0.49kgs
NJ 307 ECP
- P: Glass fibre reinforced PA66 cage, rolling element centred
NJ 307 ECM
- M: Machined brass cage, rolling element centred
1 . ) Cylindrical roller bearings is generally only used to bear radial load, compared with the same
size deep groove ball bearings, have bigger radial load capacity,
limit rotational speed is close to deep groove ball bearings, but
with this type of bearing shaft, shell hole processing the demand
is higher, allow the axis of the inner ring and outer ring axis
inclination is small (2 ° - 4 °), two axis tilted as beyond the
limit, The contact between the roller and the ring raceway will
deteriorate, seriously affecting the load capacity of the bearing
and reducing the service life of the bearing. Therefore, if such
bearings need to be installed in the main engine parts under axial
load, they can only be used if other types of bearings are used to
bear axial load at the same time.
Techinical Specification Roller bearing NJ307 :
| Bearing No. | Dimensions(mm) | Weight |
| d | D | T | kg |
| NJ 307 | 35 | 80 | 21 | 0.49
|
ASSOCIATED PRODUCTS: Angle ring HJ 307 EC
2 . ) Cylindrical roller bearings have below types:
N type:
The inner ring has two integral flanges and the outer ring is
without flanges. Axial displacement of the shaft with respect to
the housing can be accommodated in both directions within the
bearing itself. The bearings are therefore used as non-locating
bearings.
NU type:
The outer ring of bearings of the NU design has two integral
flanges and the inner ring is without flanges. Axial displacement
of the shaft with respect to the housing can be accommodated in
both directions within the bearing itself.
NJ type:
The outer ring has two integral flanges and the inner ring one
integral flange. The bearings are therefore suitable for the axial
location of a shaft in one direction.
NF type:
The outer ring has one integral flange and the inner ring two
integral flanges.
NUP type:
The outer ring has two integral flanges and the inner ring one
integral flange and one non-integral flange in the form of a loose
flange ring. The bearings can be used as locating bearings, i.e.
they can provide axial location for a shaft in both directions.
RN type:
No outer ring and the inner ring two integral flanges.
NN type:
NN type bearing without ribs on outer ring,there is a wall in the
midel of between both sides of inner ring. It can make shaft
relative bearing between the axial displacement generated in both
directions.
3 . ) Application:
Large motors, Machine tool spindles, Engine front and rear support
shafts, Train and bus box shaft support, Diesel engine crankshaft,
Automobile and tractor gearbox, Internal combustion engine,
Generator, Gas turbine, Reducer, Rolling mill, Vibrating screen and
lifting and transportation machinery
