NN3038 Double Row Cylindrical roller Bearings mill roll bearing

NN3038 Double Row Cylindrical roller Bearings mill roll bearing System 1

NN3038 Double Row Cylindrical roller Bearings mill roll bearing System 2

NN3038 Double Row Cylindrical roller Bearings mill roll bearing System 3

NN3038 Double Row Cylindrical roller Bearings mill roll bearing

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 50 pc

Supply Capability:: 5000000 pc/month

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Specification of Double Row Cylindrical roller bearings:

Double row Cylindrical roller bearings belong to separable bearings, whose inner and outer rings are linearly contacted with rollers. They have small friction coefficient, bigger capacity of bearing radial load and are applicable to both bearing heavy load and impact load and high-speed rotation. Cylindrical roller bearings have the advantages of compact structure, strong stiffness, big bearing capacity, small deformation after loaded etc.

CNBM has already successfully developed split cylindrical roller bearings which can be freely installed at any time and any place, to meet the demand of driving and conveying rollway bearings at cooling area of continuous casting. CNBM also can provide special cylindrical roller bearings according to requirement of customers.

Product Application:

- Iron and steel metallurgical industry

- Medium and large motor

- Generator

- Combustion engines

- Machine tool spindle

- Speed reducer

- Loading and unloading machinery and all kinds of industrial machinery

Double row cylindrical roller bearings

- NN double row cylindrical roller bearings

This kind of bearings with inner rid, no outer rid. This assembly part can be separated from another ring, and they have larger radial load capacity than other single row cylindrical roller bearings with the same size, but the axial or housing is free axial displacement, so this kind of bearings can only bear the axial load.

- NNU, NNU…K double row cylindrical bearings

NNU,NNU...K type bearings with outer rid, no inner rid. There are tow kinds of holes, one is cylindrical hole, and another is tapered hole. Axial or housing is free axial displacement, so this kind of bearings can not bear the axial load. But these kind of bearings have larger radial load capacity than other single row roller bearings with the same size.

- NUP single row cylindrical roller bearings

NUP type bearings with double outer rid, single inner rid and loose rid, this design is possible to limit the axial displacement of the shaft or the housing in double direction within the scope of the axial clearance. in addition they mainly used to bear radial load, also can withstand diameter, the axial union load. Therefore this NUP suitable for fixed end bearings.

- NNCF double row cylindrical bearings

NNCF type bearings with three inner rids and one outer rid. They can take a direction axial positioning. There is a fixed ring in the other side of the outer rid, it can make bearing keep as one.

Double Row Cylindrical Roller Bearings Catalogue:

Desiganations	Basic load rating KN		Principal dimensions					Spead ratings rpm.		Weight
	Cr	Cor	d	D	B	r	Ew.Fw	Grease	Oil	kg
NN3032K	345	675	160	240	60	2.1	219	3800	3200	8.39
NN3032KTN1	345	335	160	240	60	2.1	219	3800	3200	7.86
NN3032K/W33	345	675	160	240	60	2.1	219	3000	2200	8.38
NN3032K/YB2	345	675	160	240	60	2.1	219	3000	2200	8.39
NN3032	345	675	160	240	60	2.1	219	3000	2200	8.38
NN3034K	435	860	170	260	67	2.1	236	3600	3000	12.9
NN3034/YA8	435	860	170	260	67	2.1	236	3000	2200	13.3
NN3036K	555	1090	180	280	74	2.1	255	3400	2800	16.9
NN3036	555	1090	180	280	74	2.1	255	2800	2000	16.9
4382936	337	703	180	250	69	2.3	201	2800	2000	9.8
NN3038K	565	1140	190	290	75	2.1	265	3200	2600	17.9
NN3038K/W33	565	1140	190	290	75	2.1	265	2600	1900	17.1
NN3038	565	1140	190	290	75	2.1	265	2600	1900	18
NNU4938B-W33	560	1250	190	260	69	3	212	2600	1900	11
NNU6038	1260	3200	190	290	180	2.1	219	2600	1900	43.6
NN3034K	675	1340	200	310	82	2.1	282	3000	2400	22
NN3034	675	1340	200	310	82	2.1	282	2400	1900	22.1
NN3044K	795	1610	220	340	90	3	310	2800	2200	30.1
NN3044K/W33	795	1610	220	340	90	3	310	2200	1800	30
NN3044	795	1610	220	340	90	3	310	2200	1800	31
NN3048K	810	1690	240	360	92	3	330	2600	2000	32.7
NN3048	810	1690	240	360	92	3	330	2000	1700	31.6
482752U	605	1500	260	360	80	2.1	282	1600	1900	28.2
NN3056K	1060	2290	280	420	106	4	384	2200	1800	49.7
NN3056	1060	2290	280	420	106	4	384	1700	1400	52.3
3182160	1290	2790	300	460	118	4	418	1200	1500	76.2
3282160	1290	2790	300	460	118	4	418	1200	1500	77.9
31821/600	4050	9850	600	870	200	6	805	600	800	384
32821/600K	4050	9850	600	870	200	6	805	600	800	403
31821/630	4350	10600	630	920	212	7.5	850	550	750	438
32821/630K	4350	10600	630	920	212	7.5	850	550	750	460
NN3030K	330	650	150	225	56	2.1	206	4000	3400	7.7
NN3030/YA8	330	650	150	225	56	2.1	206	4000	3400	7.7
NN3030	330	650	150	225	56	2.1	206	3200	2400	7.75
NN3030/C9	330	650	150	225	56	2.1	206	3200	2400	7.75
NN3030/C9YA8	330	650	150	225	56	2.1	206	3200	2400	7.79
NN3030K/C91W33	330	650	150	225	56	2.1	206	3200	2400	7.7

Q: Which column roller bearing brand is good?: you can look at yourself, they recently in the Qingdao market to great influence, you can understand.

Q: My notes is the former has a taper hole on the cone position preload, the latter is a nut. But the online information seems a little different. Are the preload methods for two direction thrust angular contact bearings and angular contact ball bearings the same?: The latter is mainly used as a precision screw shaft for the radial motion and axial runout requirements are very strict, generally used when they are two back-to-back, when pre tightening have strict requirements, general requirements for the radial motion and axial runout should not exceed 5 per thousand mm.

Q: cylindrical roller bearings N210 20Deep groove ball bearings 6120, self-aligning ball bearings 1210, cylindrical roller bearings N210 in the same radial force conditions, the life expectancy of the three levels and how to compare? What is the cause of the high and low?: In these three bearings, the deep groove ball bearings roll with the bearing outer ring point contact, and the bearing outer ring contact surface is smallest. The self-aligning ball bearing and the outer ring of the bearing are double point contact, and the contact surface is slightly larger than the outer ring of the bearing.

Q: Can cylindrical roller bearings bear high temperature?: Bearing is not high temperature grease is not high temperature, a grease temperature does not exceed 120 degrees, high temperature will lead to bearing lubrication performance, unable to work, in fact, the bearing itself can be high temperature resistant.

Q: For bearing type, no outer ring single row cylindrical roller bearings, bore 40, thickness 21, roller diameter 8, roller length 12: Hello, according to your descriptionCylindrical roller bearings NN3008-AS-K-M-SPAccording to the main dimensions of the DIN 5412-4 standard, non locating bearing, double row, with taper hole taper 1:12, can be separated, with cage, radial internal clearance decreased, tolerance limitInternal diameter D 40 mmOuter diameter D 68 mmThe thickness is B 21 mmDa Max 63 mmDb min 62 mmD1 50,6 mmDa min 45, mm, DS, 3,2, mmE 61, mmNS 4,8 mmRA Max 1 mmRmin 1, mmS 1,4 mmAxial offset from the center positionM 0303, kgqualityCr 45000, NBasic rated dynamic load, radialC0r 58500, NBasic rated static load radialNG Fett 12000 1/minLimit speed of grease lubricationNG l 15000 1/minLimit speed at least oil lubricationCur 8400, NFatigue limit load, radial

Q: What are full cylindrical roller bearings?: Full capacity roller bearings are divided into double row full load roller, single row full roller, outer spherical roller, CARB bearingsI am a bearing manufacturer, factory direct marketing, welcome inquiry cooperation. Contact information on personal data

Q: What is called a semi convex roller, a fully convex roller, a logarithmic curve roller?: The logarithmic curve roller is also a convex roller, which belongs to a full convex roller;The shape roller refers to a roller which has a slight modification to the diameter of the outer end of the roller to prevent the stress concentration at the end of the contact between the roller and the raceway.The corresponding types of bearings are cylindrical roller bearings and tapered roller bearings. Modified roller and convex roller have been widely used in domestic roller bearings, which can improve the service life of the products.

Q: For example, NU, NJ, N, RNU, NUP, NF, NO, NN, RN, what do you mean, who can tell me about that hero?: N outer ring without edge, inner ring double edgeRNU no inner ring, NU typeNUP outer ring, double retaining ring, inner ring, single edge, with flat retaining ringNF outer ring, single edge, inner ring, double edgeNO doesn't know

Q: Cylindrical roller bearings, in the grease after the operation for a short period of time, the grease was thrown out (thrown to the end cap), resulting in roller and raceway between the lack of grease, lubrication poor. Decomposition found that the roller has round circumferential friction marks, but also on the roll, but compared to the roller is very slight. And there are relatively sound bearings, abnormal sound.Is this phenomenon normal? What if it doesn't work? What was the reason? What's the solution? StopThanks for your help!Assuming the grease is no problem, viscosity, consistency, selection is no problem If exclusion is the problem of grease, what other reasons can this be the case? ?: If the grease is dry, adhesion is not good, some of the high temperature grease stored for a long time will be dry, it will apply to the bearing is easy to get rid of, especially now the winter oil solidification, the lubrication effect is less. It is recommended to use low temperature grease in winter or add some oil to dilute it. The best way is to change the grade of grease. If the inner ring of the bearing can be removed, grease can be filled from it.

Q: The thrust cylindrical roller bearings do not need the bearing seat, and the thrust bearings, shaft rings and seat rings on our unit are all in the bearing seat, often broken. The rotation of the 1. shaft in the bearing seat will not be affected, moreover, the shaft will have radial runout. 2. do not use the bearing seat, usually how to refuel?.Are there any field installation drawings or data on thrust bearings?. Thanks a million!: Hello, I have sent a message to your mailbox, I hope you can help! Have problems you can contact us directly, Beijing Sheng Yi Huitian Electromechanical Equipment Co. Ltd

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