Cylindrical Roller Bearing, buy NU 1011 M N 211 EM NJ 211 EM NU 211 EM NUP 211 EM NU 2211 EM NUP 2211 EM NJ 2211 EM NJ 311 EM NU 311 EM NU 311 EMA NUP 311 EM NJ 2311 EM NU 2311 EM NUP 2311 EM N 411 M NJ 411 M NU 411 M NUP 411 M NN 3011 K M NA Cylindrical Roller Bearings on China Suppliers Mobile

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	Principal dimensions			Basic load ratings		Speed limits		Weight	Radius		Dimensions
Part number	Bore	Outer	Width	Dynamic	Static	Grease	Oil	Weight	Radius		Dimensions
	d	D	B	C	Co	rpm		Kg	rs _min	r1s _min	F	E
	mm			kN		1 min−1		Kg	mm		mm
NU 1011 M	55	90	18	37,7	43,4	7800	9200	0,464	1,1	1	64,5
N 211 EM	55	100	21	57,9	62,5	6300	7500	0,665	1,5	1,1		88,5
NJ 211 EM	55	100	21	82,6	93,4	6300	7500	0,66	1,5	1,1	66,0
NU 211 EM	55	100	21	82,6	93,4	6300	7500	0,665	1,5	1,1	66,0
NUP 211 EM	55	100	21	82,6	93,4	6300	7500	0,665	1,5	1,1	66,0
NU 2211 EM	55	100	25	98,9	118	6300	7500	0,78	1,5	1,1	66,0
NUP 2211 EM	55	100	25	98,9	118	6300	7500	0,85	1,5	1,1	66,0
NJ 2211 EM	55	110	25	98,9	118	6300	7500	0,78	1,5	1,1	66,0
NJ 311 EM	55	120	29	134	138	5000	6000	1,47	2	2	70,5
NU 311 EM	55	120	29	134	138	5000	6000	1,47	2	2	70,5
NU 311 EMA	55	120	29	134	138	5000	6000	1,47	2	2	70,5
NUP 311 EM	55	120	29	134	138	5000	6000	1,47	2	2	70,5
NJ 2311 EM	55	120	43	148	162	4800	6000	2,86	2	2	70,5
NU 2311 EM	55	120	43	187,3	213	4800	5600	2,5	2	2	70,5
NUP 2311 EM	55	120	43	187,3	213	4800	5600	2,5	2	2	70,5
N 411 M	55	140	33	139	138	4300	5000	2,54	2,1	2,1		117,2
NJ 411 M	55	140	33	139	138	4300	5000	2,54	2,1	2,1	77,2
NU 411 M	55	140	33	139	138	4300	5000	2,54	2,1	2,1	77,2
NUP 411 M	55	140	33	139	138	4300	5000	2,51	2,1	2,1	77,2
NN 3011 K M NA	55	90	26	69,0	100	6700	8000	0,618	1,1	4,5		81,0

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 peration. 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.