Cylindrical Roller Bearing

Needle roller bearings are distinguished for their compact designs,and this feature makes them particularly suitable for using in machine parts where the radial space is limited.

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Long cylindrical roller bearings (needle roller bearings) are assembled with many slender cylinders (needle rollers) with a length of 3-10 times the diameter, making them compact in structure and having a relatively large radial load capacity.

Long cylindrical roller bearings (needle roller bearings) include: stamped outer ring needle roller bearings with special alloy steel plates as the outer ring, solid outer ring needle roller bearings with cutting rings, and bearings without retaining rings, needle roller components, and roller needle structures. Moreover, there are various structures with inner rings, without inner rings, or with and without cages.

Bearings with cages mainly use steel plate stamped cages.

Needle roller bearings are distinguished for their compact designs,and this feature makes them particularly suitable for using in machine parts where the radial space is limited.The room between housing are shaft should be restricted to a close limit.Needle roller bearings with one ring or needle rollers and cage assemblise only can also be produced,on condition that the accuracy and the surface finish of the working surface of the matching parts be indentical with that of beairng rings.

Bearing No.		Dimension (mm )							Basic load rating(KN)		Limiting speeds		Dimension		Mass(kg)
New	Old	d	D	B	rmir	rlmir	Fw	Ew	Cr	Cor	Grease	Oil	d2	D2
NA 5917	—	85	120	46	1.1	1.1	100		140	315		4500		108	1.66
NAL 4034	4104134	170	260	90	2.1		192		787	1400	1100	1600		230	15.9
NAL 4036	4104136	180	280	100			207		862	1610	940	1400		250	21.5
NAL 4036 M	4104136H	180	280	100	2.1	2.1	205		834	1460	940	1400		250.4	24.3
NAL 4038	4104138	190	290	100			217		899	1670	900	1300		258	22.6
Y 604708 K1	604708K1	40	65	56.5			40.1		131	211	4500	6300			0.826
NAUL 612 WBF1	954712	60	120	58				106	248	329	2900	4400	79.2		3.32
RNAOL 4921 M	124721	105	146	66				146	293	521	1900	2900			3.62
NNAL 6034 X2/W33X	154734	170	260	192	2.1	2.1	192		1430	3020				230	34.5
NNAL 6034 X2M/C4W33X	4G154734H	170	260	192	2.1	2.1	192		1430	3020				230	36.6
NNAL 6/177.8Q4/W33XYA2	254735Q	177.8	244.475	162.925	3	3	198		889	2350				222	23.6
NNAL 6036 X2-1/W33X	154736	180	280	219			207		1430	3540				245	46.8
NNAL 6/222.25-1 Q4/C9W33XYA2	154744QU	222.25	298.45	225.425	2.1	2.1	242.35		1580	4640				271.2	45.2
Y 294817 Q	294817Q	100.5	150	133.45		2		100.5	573	1060				125.3	7.91
NNAL 6036 X2-2M/W33X	154836	180	280	219	2.1	2.1	207		1340	3280				250	49.6
Y 4644838 HK	4644838HK	210	240	50		1.5		210	223	631	1300	1900		215.5	3.28
NA 4844 A	4524844	220	270	50	1.5	1.5	240		177	684	1100	1700			6.88
NA 4844 A/YA4	4524844K	220	270	50	1.5	1.5	242		177	684					6.88
NNAL 6/101.6 Q4/W33XYA2	354920Q	101.6	171.45	133.35	2	2	127		538	1400				146.6	13.5
NNAL 6/139.7 Q4/C9W33YA2	154928QU	139.7	203.2	146.558	2	2	155.5		845	1950				181.1	15.8
NNAL 6/146.05 Q4/C9W33YA2	154920QU	146.05	209.55	162.306	2	2	161.8		921	2210				187.4	18.3
NNAL 6/158.75 Q4/W33X	154932QU	158.75	231.775	161.925	2.1	2.1	177.3		1020	2390				205.5	23.5
NNAL 6/158.75 Q4/C9W33X	154932QU1	158.75	231.775	161.925	2.1	2.1	177.3		1020	2390				205.5	23.5
NNAL 635 Q4/W33X	354935Q	175	245	160	—	—	197		876	2540	1000	1500		222.6	24.9
NNAL 6/177.8-2 Q4/W33XYA2	254936Q	177.8	257.175	196.85	2	2	199.5		1230	3030				229.9	34.2
NNAL 6/177.8-2 Q4/C9W33XYA2	254936QU	177.8	257.175	196.85	2	2	199.5		1230	3030				229.9	34.2
NNAL 6/187.325 Q4/C9W33YA2	154937QU	187.325	266.7	217.475	2.1	2.1	207.512		1560	4110				238.7	42.2
NNAL 6/206.375 Q4/W33XYA2	254941QU	206.375	285.75	222.25	5	5	230.5		1450	2200				258	44.9
NNAL 6/206.375 Q4/C9W33XYA2	254941QU1	206.375	285.75	222.25	5	5	230.5		1450	2200				258	44.9
NNAL 6/209.55 Q4/W33X	154942	209.55	282.575	236.525	—	3.5	230.188		1490	4630	840	1200		255	43.2
NNAL 6/209.55 Q4/C9W33X	154942QU	209.55	282.575	236.525	3.5	3.5	230.188		1490	4630	840	1200		255	43.7
NNAL 6/209.55 Q4/W33X	154942Q	209.55	282.575	236.525	3.5	3.5	230.188		1490	4630	840	1200		255	43.7
NNAL 6/209.55/HCW33X	154942S	209.55	282.575	236.525	3.5	3.5	230.188		1490	4630	840	1200		255	43.2
NNAL 6/222.25 Q4/C9W33XYA2	154944QU	222.25	298.45	228.6	2.1	2.1	242.35		1600	4720	700	1100		271.2	45.9
NNAL 6/228.6/C3W33X	3G154946	228.6	317.5	241.3	3	3	252.5		1910	5370	570	900		286.1	54.0
NAL 28/1130 X1V	749/1130	1130	1310	140	6	6	1191		3270	14500				1237	324