NN3030K/C91W33 Double Row Cylindrical roller Bearings mill roll bearing

NN3030K/C91W33 Double Row Cylindrical roller Bearings mill roll bearing System 1

NN3030K/C91W33 Double Row Cylindrical roller Bearings mill roll bearing System 2

NN3030K/C91W33 Double Row Cylindrical roller Bearings mill roll bearing System 3

NN3030K/C91W33 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: NSK cylindrical roller bearings EW/EM series of differences and characteristics: E international is called "reinforced type" load, also means to increase rolling bodyW international is called a steel cageM international is called brass retainerThis can be a question, just ask, for reference only

Q: Why are cylindrical roller bearings suitable for traveling support?: Cylindrical roller bearings without inner sides of the inner ring or outer ring, whose inner and outer rings can be moved relative to the axial direction, so they can be used as free end bearings.

Q: How are the twin row cylindrical roller bearings classified?: Double row cylindrical roller bearings have cylindrical inner bore and conical inner bore (bearing rear code plus K) two structures. This kind of bearing has the advantages of compact structure, large rigidity, large bearing capacity and little deformation after load. It is especially suitable for spindle support of machine tools. The conical inner hole can also play the role of micro adjustment of the clearance, and can simplify the positioning device structure, and is convenient for installation and disassembly.

Q: Which column roller bearing brand is good?: Foreign SKF is better, the domestic is Kazakhstan axis, and then is Taiwan's Rui Rui, you can look at yourself, they recently in the Qingdao market to great influence, you can understand.

Q: How to check the thrust cylindrical roller bearings?: Bearing dimensions (or bearing samples) have "basic rated load (KN)", this column can be directly detected, in general, according to the use of appropriate multiplied by a (1.2~1.5) safety factor. In accordance with the requirements of the design manual, the equivalent load can be calculated (considering the speed, temperature, load and stability).

Q: Can the Nu and N type NJ NUP cylindrical roller bearings bear axial force?: The answer upstairs is clear. Such bearings can not be designed with axial force. In use, the inner and outer rings of the bearing can have larger axial displacement, and the aim is to compensate the length change caused by the rotating part of the two bearing due to the temperature rise.

Q: Attention problems of cylindrical roller bearings: High temperatures often indicate that cylindrical roller bearings are in exceptional condition. High temperature is also harmful to bearing lubricants. Sometimes the bearing is overheated and can be attributed to the lubricant in the bearing. If the bearings are longer than the temperature of 125 degrees, even the transfer will reduce the bearing life. The causes of high temperature bearings include: insufficient lubrication or excessive lubrication, impurities in the bearing raceway, extreme high speed, long term overload operation of bearings, etc..

Q: Cylindrical roller bearings NUP2311E mounting dimensions: Da (max): 69Da (min): 64DB (min): 72DC (min): 80Da (max): 111What are the specific meanings of these dimensions? Thank you, master: This is a bit too small to understand, because different installation methods are different from each other. It is recommended that the landlord refer to the installation of cylindrical roller bearings, the above is very clear.

Q: Is the nu240em cylindrical roller bearing split?: Cylindrical roller bearings are generally used to bear radial load, compared with deep groove ball bearings of the same size, with larger radial load capacity, speed limit is closer to the deep groove ball bearing, but the processing with the shaft and the bearing shell with high requirements, allow the inner ring and the outer ring axis axis inclination is small (2 degrees -4 two degrees), such as the axis is tilted beyond the limits, contact roller and raceway will worsen, seriously affect the load bearing capacity, reduce the service life of the bearing.

Q: The Russian bearing suffix No. ZST is a cylindrical roller bearing: Well, you have to write out the whole model. The suffix code is not used to distinguish the bearings, but it helps to explain the structure of the bearings and the material.

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