Home > Industrial Equipment & Components > Bearing > Cylindrical Roller Bearing > NU 1948 M NU 1048 M NJ 1048 M NU 248 EM NJ 248 EM NU 2248 EM N 348 EM NU 348 EM NU 2348 EM NN 3048 K, Cylindrical Roller Bearings

NU 1948 M NU 1048 M NJ 1048 M NU 248 EM NJ 248 EM NU 2248 EM N 348 EM NU 348 EM NU 2348 EM NN 3048 K, Cylindrical Roller Bearings

NU 1948 M NU 1048 M NJ 1048 M NU 248 EM NJ 248 EM NU 2248 EM N 348 EM NU 348 EM NU 2348 EM NN 3048 K, Cylindrical Roller Bearings thumbnail-1
NU 1948 M NU 1048 M NJ 1048 M NU 248 EM NJ 248 EM NU 2248 EM N 348 EM NU 348 EM NU 2348 EM NN 3048 K, Cylindrical Roller Bearings thumbnail-2
NU 1948 M NU 1048 M NJ 1048 M NU 248 EM NJ 248 EM NU 2248 EM N 348 EM NU 348 EM NU 2348 EM NN 3048 K, Cylindrical Roller Bearings thumbnail-3
NU 1948 M NU 1048 M NJ 1048 M NU 248 EM NJ 248 EM NU 2248 EM N 348 EM NU 348 EM NU 2348 EM NN 3048 K, Cylindrical Roller Bearings photo-1
NU 1948 M NU 1048 M NJ 1048 M NU 248 EM NJ 248 EM NU 2248 EM N 348 EM NU 348 EM NU 2348 EM NN 3048 K, Cylindrical Roller Bearings photo-2
NU 1948 M NU 1048 M NJ 1048 M NU 248 EM NJ 248 EM NU 2248 EM N 348 EM NU 348 EM NU 2348 EM NN 3048 K, Cylindrical Roller Bearings photo-3
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Brand Name:
HPC or Natural or OEM
Place of Origin:
China
Model Number:
NU 1948 M NU 1048 M NJ 1048 M NU 248 EM NJ 248 EM NU 2248 EM N 348 EM NU 348 EM NU 2348 EM NN 3048 K
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Brand Name HPC or Natural or OEM
Place of Origin China
Model Number NU 1948 M NU 1048 M NJ 1048 M NU 248 EM NJ 248 EM NU 2248 EM N 348 EM NU 348 EM NU 2348 EM NN 3048 K
Number of Row Single Row
Seals Type Open
Precision Rating P6
Outside Diameter 320, 500
Bore Size 240, 240

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 Principal dimensions Basic load ratings Speed limits Weight Radius Dimensions
Part   number Bore Outer Width Dynamic Static Grease Oil

d D B C Co rpm Kg rs min r1s min F E

mm kN 1 min−1 mm mm
NU 1948 M 240 320 38 308 540 1900 2400 8,5 2,5 1,8 260,0
NU 1048 M 240 360 56 520 820 1700 2000 20 3 3 270,0
NJ 1048 M 240 360 56 512 775 1700 2000 21,1 3 3 270,0
NU 248 EM 240 440 72 1050 1540 1300 1600 46,9 4 4 295,0
NJ 248 EM 240 440 72 1050 1540 1300 1600 49,6 4 4 295,0
NU 2248 EM 240 440 120 1490 2450 1200 1500 84,8 4 4 295,0
N 348 EM 240 500 95 1530 2120 1000 1300 96,3 5 5
430,0
NU 348 EM 240 500 95 1530 2120 1000 1300 96,3 5 5 310,0
NU 2348 EM 240 500 155 2190 3360 950 1200 155 5 5 310,0
NN 3048 K 240 360 92 885,0 1690 1700 2000 32,700 3,0

330,0


Cylindrical roller bearings are manufactured in a number of designs as indicated below.The predominant

type being the single row roller. The roller and cage assembly are guided axially by the integral

flanges (ribs) on one of the bearing rings. This design facilitates ease of mounting and dismounting,

particularly where both races are an interference fit on their seatings. Roller bearings with flanges (ribs)

on one race only do not provide any end location. Various roller bearings with ribs on both races provide

axial location, and are capable of carrying light or intermittent axial loading. These patterns are of

the NJ, NUP and NJ+HJ types. If used for axial location and light axial loads, the contact between the

flanges (ribs) and the roller ends is that of a sliding bearing, not rolling bearing; therefore

lubrication is of paramount importance.

Alignment is much more critical than that of a ball bearing; as a general guide, this is limited to

approximately .003 radians. Double and multi-row bearings are also manufactured

- see NN and NNU series.

Dimensions in accordance with ISO 15-2011


Of these bearings, the NJ, NUP and NJH types can also

carry light or intermittent thrust loads between the guide rib

and the end of the rollers. Several arrangements of locating

ribs are available, as illustrated. The choice between these

types is usually decided by consideration of assembly procedure

or machine clearances. The bearings utilizing machined

bronze cages are suitable for high speed operation. The NN

30 and NN 30 K series are available in high precision tolerances

and, due to their extreme rigidity, are particularly suited

for use in machine tool spindles.

Typical suffixs used for cylindrical roller bearings:


E - Increased loading capacity

NA - Non-interchangeable components

M - Brass cage guided on the rollers

EM - Increased loading capacity and brass cage guided on the rollers

EMA - Increased loading capacity and brass cage guided on the outer ring





Product Tags: NU 1948 M , NU 1048 M , NU 248 EM , NJ 248 EM , NU 2248 EM , N 348 EM , NU 348 EM , NU 2348 EM , NN 3048 K

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Integration Trading (Xiamen) Co.,Ltd
Verified Business License
Business Type
Trading Company
Year Established
2018
Factory Size
1,000-3,000 square meters
Annual Export Value
US$10 Million - US$50 Million
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