32821/600K Double Row Cylindrical roller Bearings mill roll bearing bearings

32821/600K Double Row Cylindrical roller Bearings mill roll bearing bearings System 1

32821/600K Double Row Cylindrical roller Bearings mill roll bearing bearings System 2

32821/600K Double Row Cylindrical roller Bearings mill roll bearing bearings System 3

32821/600K Double Row Cylindrical roller Bearings mill roll bearing bearings

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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:How much is the axial force of double row cylindrical roller bearings? How is it calculated?: The cylindrical roller bearings have ribs can withstand certain axial force, the axial force for cylindrical but still belongs to the non normal stress, can cause early failure of the bearing, it is generally not given the axial bearing capacity, no formula

Q:Can you make it clear? I don't understand. Thank you for being here first.: Oh, My God！！！ Do you understand the bearings in this way?! What is called "roller" means that the rolling column is cylindrical and similar to cylindrical shape, such as short cylindrical, long cylindrical, tapered roller, spherical roller, etc.." This kind of statement should be listed as the promotion answer!!! Absurd! Laughable! !!The standard answer is: Bearings in accordance with the direction of force, divided into radial bearings and thrust bearings, in simple terms, if the main force to bear the axial thrust bearings, thrust bearings; otherwise, that is, radial bearings. As for radial roller bearings, simply speaking, it is the roller bearings that mainly bear radial forces. It's so simple, there's so much nonsense!!!

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:What are the components of cylindrical roller bearings?: Compared with the deep groove ball bearings of the same size, this kind of bearing has larger radial load capacity, and is also suitable for high-speed rotation from the structure.

Q:KOYO cylindrical roller bearings, //KOYO cylindrical roller bearings, how to determine the accuracy level?: The processing of the mating surface, especially the mating surface, is not done in a single clamping. The use of the bearing seat also causes misalignment, such as a flange bearing seat or a vertical KOYO inlet bearing block. As the work load causes the shaft to bend and deform, and also causes the inner and outer ring of the bearing to tilt, it will also appear misalignment.The main products are: KOYO bearing rolling bearing, deep groove ball bearings, high precision bearings, self-aligning bearings, bearings, plane ball bearings, cylindrical roller bearing, linear guide bearing, ball screw bearings, miniature linear guide bearing, cross roller guide bearings, reciprocating rotary bearings, ball bearing slide bushing, group cam follower.

Q:NSK cylindrical roller bearings EW/EM series of differences and characteristics: M international is called brass retainerThis can be a question, just ask, for reference only

Q:How are the twin row cylindrical roller bearings classified?: The NN0000K type conical bore double row cylindrical roller bearingThis kind of bearing is compact in structure and bears little deformation under load, so it is suitable for the support of spindle of machine tool. The inner bore of the bearing is taper, and the radial clearance of the bearing can be adjusted slightly.This kind of bearing with no outer wall, so you can install the outer ring and the inner ring assembly respectively (with roller and cage), does not limit the axial displacement of the shaft or shell, cylindrical roller bearing with the same radial size is compared, can bear larger radial load.

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?: Summary: the above three kinds of bearings, the service life in accordance with the order from high to low: deep groove ball bearings, self-aligning ball bearings, cylindrical roller bearings.

Q:Why are cylindrical roller bearings suitable for traveling support?: Should be the inner ring and the outer ring without the edge of the can do moving support.

Q:Why cylindrical roller bearings can not bear axial load?.: The thrust bearing retainer plate and two pieces of circular hole of the ball and the ball hole and shaft wear in the park, circular plate, steel ball track between two plate, shaft and the bearing seat of the top plate in the round two sides, in addition to the track groove, it is not binding the radial direction, so it cannot withstand the radial load.The radial bearing by the size of the two steel ring, steel ball size between steel ring, steel ring diameter fixed by a bearing seat, shaft mounted on a small steel ring, binding only in the radial direction and axial direction of the load is not binding, so it cannot withstand the axial diameter.

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