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NU18/950 C3W33 Cylindrical Thrust Roller Bearings For Rolling Mill , Stainless Steel Ball Bearings GCr15

Large Size Single Row Cylindrical Roller Bearings

Standards
Cylindrical roller bearings, single row: DIN 5412, part 1
Cylindrical roller bearings, double row: DIN 5412, part 4

Tolerances, bearing clearance
Bearing clearance is distinguished between radial and axial. Design versions like NUP or NJ + HJ need also attention in axial next to radial clearance. Tolerances are in accordance with ISO 492 and clearance is in accordance with ISO 5753.

Cages
All the cylindrical roller bearings of the series NU10, NU18, NU19, NU2, NU20, NU22, NU23, NU28 NU29, NU3, NU30, NU31, NU4, NU60, NN30.., NN48, NNU48, NNU49 and NNU60 are preferably delivered with machined brass cage.

The following machined cages are available:

Chamber-type cages, letter code M
Window-type cages, letter code MP
Comb-type cup cages, hot-riveted steel rivets, letter code M2
Comb-type cup cages, spider riveted, letter code M3
Comb-type cup cages, bolted, letter code M4 (available only for bore diameter 64 and higher)

The following types of machined cage guidance are offered for cylindrical roller bearings:

Roller guidance, no extra letter code
Outer roller guidance, additional letter code A
Inner roller guidance, additional letter code B

Angular adjustment
The modified line contact between rollers and races of cylindrical roller bearings avoids edge tension, and allows a slight adjustment of the contact angle. The adjusted contact angle shall not exceed four minutes with a load ratio

of single row cylindrical roller bearings (P = equivalent dynamic load [kN], C = dynamic capacity [kN]). The mounting positions of double row cylindrical roller bearings shall be free of any misalignment.

Design versions of cylindrical roller bearings
There are not only the standard types NU and NJ

The following combination specifications are common:
for NU + HJ: NUJ
for NJ + HJ: NH
for WU + HJ: WU..W

The bearing versions NU or NNU are used as examples of technical specifications such as load ratings and speed limits.

Cylindrical roller bearings are also available with a rough-ground inner ring raceway. You can also order bearings without an innerring (RNU) or without an outer ring (RN).

Equivalent dynamic load
The following applies to a cylindrical roller bearing with radial load:

P = F_r [kN]

If the radial force is combined with an axial force Fa, it will be considered in the bearing service life calculation, where F_a ≤ F_{a zul} admissible must be (F_a_admissible = admissible axial force).

Maßreihe	Belastungsverhältnis	dynamische äquivalente Belastung
18, 19, 10 10E, 2		P=F1
2E, 3, E3E, 4		P=0,93F1+0,69Fa
29V, 22, 22E		P=F
23, 23E, 23 VH		P=0,93F1+0,45Fa
30V		P=F1
		P=0,93F1+0,33Fa
50V		P=F1
		P=0,96F1+0,5Fa

Admissible axial load
Cylindrical roller bearings of the series NUP, NJ, NJ with angular rings (NH) and cageless bearings of the series NJ..VH, NCF..V and NNF..V may accept axial forces, if they are also loaded in radial direction. The maximum axial load admissible is

if

is ensured.

It depends on:

radial load
speed
lubrication
operating temperature and heat transfer conditions

The theoretical axial load is determined calculating the heat balance at the bearing positions, and may be estimated as follows:

F_a axial force [kN]

f_b 0,0048 for cage bearings
0,0063 for cageless bearings

d_m mean bearing diameter

n Inner ring speed [min^-1]

v operating viscosity of the oil or the grease basic oil [mm²/s]

D outer bearing diameter [mm]

d bore diameter [mm]

The axial clearance capacity depends on the support at the shoulders, and is limited by:

F_{a zul} zulässige Axialkraft [kN]

K 6,5 for single row cage bearings
5,5 for cageless single row bearings
3 for multiple row bearings

d_m mean bearing diamet

B bearing width [mm]

The axial clearance capacity depends on the support at the shoulders, and is limited by:

Shaft
Housing

d_w support diameter for inner ring [mm]

D_g support diameter for outer ring [mm]

F envelope diameter of the inner ring [mm]

J edge diameter of the inner ring [mm]

E envelope diameter of the outer ring [mm]

H edge diameter of the outer ring [mm]

If the admissible axial load is exceeded, the support diameter has to be larger.

Equivalent static load
The following applies to a cylindrical roller bearing with static radial load:

P₀ = F_r [kN]

Code	Dimension			Load rating		Weight ≈
Code	Dimension			static	dynamic	Weight ≈
	d mm	D mm	B mm	C₀ kN	C kN	kg
NU1808M	40	52	7	9	7	0
NU1809M	45	58	7	11	8	0,1
NU1810M	50	65	7	12	10	0,1
NU1811M	55	72	9	14	11	0,1
NU1812M	60	78	10	22	17	0,1
NU1813M	65	85	10	24	18	0,2
NU1814M	70	90	10	26	19	0,2
NU1815M	75	95	10	28	19	0,2
NU1816M	80	100	10	30	20	0,2
NU1817M	85	110	13	47	33	0,3
NU1818M	90	115	13	50	34	0,3
NU1819M	95	120	13	52	34	0,3
NU1820M	100	125	13	55	36	0,4
NU1821M	105	130	13	59	37	0,4
NU1822M	110	140	16	73	47	0,6
NU1824M	120	150	16	79	49	0,7
NU1826M	130	165	18	110	68	0,9
NU1828M	140	175	18	117	70	1
NU1830M	150	190	20	145	86	1,4
NU1832M	160	200	20	153	88	1,5
NU1834M	170	215	22	173	101	1,9
NU1836M	180	225	22	183	104	2
NU1838M	190	240	24	241	139	2,6
NU1840M	200	250	24	248	140	2,7
NU1844M	220	270	24	275	148	3
NU1848M2A	240	300	28	397	216	4,5
NU1852M	260	320	28	437	228	4,9
NU1856M	280	350	33	475	247	7,4
NU1860M2A	300	380	38	656	340	10,8
NU1864M	320	400	38	688	348	11,5
NU1868M	340	420	38	736	361	12
NU1872M	360	440	38	769	368	12,5
NU1876M	380	480	46	1.005	493	21
NU1880M2A	400	500	46	1.075	513	21,5
NU1884M	420	520	46	1.167	540	22,5
NU1888M	440	540	46	1.173	550	23,5
NU1892M2A	460	580	56	1.485	691	36,5
NU1896M2	480	600	56	1.519	697	38
NU18/500M	500	620	56	1.613	722	40
NU18/530M	530	650	56	1.678	735	41
NU18/560M4A	560	680	56	1.713	737	44
NU18/600M	600	730	60	2.083	874	54
NU18/630M	630	780	69	2.778	1.193	76
NU18/670M2A	670	820	69	2.736	1.163	80
NU18/710M2A	710	870	74	3.330	1.415	96
NU18/750M4	750	920	78	3.590	1.590	115
NU18/800M	800	980	82	4.265	1.774	135
NU18/850M	850	1.030	82	4.435	1.803	142
NU18/900M	900	1.090	85	5.067	2.042	164
NU18/950M	950	1.150	90	5.319	2.142	192

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Categories	Cylindrical Roller Bearing
Brand Name:	MONTON
Model Number:	NU18/950 C3W33
Certification:	ISO9001
Place of Origin:	LUOYANG
MOQ:	1
Price:	USD
Payment Terms:	TT
Supply Ability:	1000/pcs/week
Delivery Time:	7-35 days
Packaging Details:	Single box/Wooden case
Material:	GCr15 or GCr15SiMn
Application:	Vibration Machinary,CNC Machine And So On
Accuracy:	P0,P6,P5,SP,P4,UP
Market:	Europe.USA,Japan,Korean
Types:	Single row or double row or four row
Samples:	Available