Home > Industrial Equipment & Components > Bearing > Cylindrical Roller Bearing > NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings

NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings

NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings thumbnail-1
NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings thumbnail-2
NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings thumbnail-3
NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings thumbnail-4
NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings thumbnail-5
NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings photo-1
NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings photo-2
NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings photo-3
NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings photo-4
NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M, Cylindrical Roller Bearings photo-5
Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)
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Brand Name:
HPC or Natural or OEM
Place of Origin:
China
Model Number:
NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M
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Integration Trading (Xiamen) Co.,Ltd
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Brand Name HPC or Natural or OEM
Place of Origin China
Model Number NU 1988 M NJ 2988 EM NUP 3988 EM NU 1088 M NU 2088 EM N 1188 EM NU 3188 EM NNU 4188 M
Number of Row Single Row
Seals Type Open
Precision Rating P6
Outside Diameter 540, 720
Bore Size 440, 440

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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 2888 EM 440 540 60 790 1900 870 1050 34,5 2,1 2,1 464,0
NU 1988 M 440 600 74 1010 1980 870 1050 65 4 4 482,0
NJ 2988 EM 440 600 95 1670 3550 870 1050 83,5 4 4 481,5
NUP 3988   EM 440 600 118 1940 4250 850 1000 106 4 4 481,5
NU 1088 M 440 650 94 1570 2430 850 1000 102 6 6 493,0
NU 2088 EM 440 650 122 2450 5000 670 820 146 6 6 487,0
N 1188 EM 440 720 122 2850 4300 800 950 207 6 6
648,0
NU 3188 EM 440 720 226 5230 9800 600 750 374 6 6 508,0
NNU 4188 M 440 720 280 4470 11500 600 700 452,0 6,0
511

 


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 2888 EM , NU 1988 M , NJ 2988 EM , NUP 3988 EM , NU 1088 M , NU 2088 EM , N 1188 EM , NU 3188 EM , NNU 4188 M

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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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