Custom NJ200 Series Cylindrical Roller Bearings Manufacturers, Factory

NJ200 Series

The NJ200 Series Cylindrical Roller Bearings are high-capacity radial bearings designed for heavy-duty industrial applications requiring high-speed rotation and radial load management. Structurally, the NJ design features two integral ribs on the outer ring and a single integral rib on the inner ring, allowing the shaft to be axially located in one direction. This configuration facilitates a degree of axial displacement during operation, accommodating thermal expansion of the shaft within the housing. Manufactured from high-cleanliness chrome steel (GCr15), these bearings utilize precisely ground cylindrical rollers to achieve linear contact with the raceways, resulting in superior load-carrying capacity compared to standard ball bearings of the same dimensions. The internal geometry is optimized to reduce friction and minimize heat generation, ensuring prolonged operational life in rigorous mechanical environments.

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NJ200 Series Cylindrical Roller Bearings

Radial loadHigh

Axial guidanceOne direction

SeparableInner ring

Unidirectional Axial Location

The single-rib inner ring design allows the bearing to locate the shaft axially in one direction while permitting movement in the opposite direction.

High Radial Load Rating

Modified line contact between rollers and raceways provides maximum radial stiffness and load distribution.

High-Speed Capability

Advanced cage designs and surface finishes support elevated limiting speeds with minimal vibration.

Separable Components

The inner ring can be mounted independently from the outer ring and roller complement, simplifying installation and maintenance procedures.

Key Product Characteristics

Material CompositionThrough-hardened Chromium Steel (GCr15/SAE 52100)

Dimensional StandardsISO 15 / DIN 5412-1 Compliance

Precision GradeP0 (Normal), P6, P5 Precision Options

Cage VariantsPressed Steel, Machined Brass (M), Glass Fiber Reinforced PA66 (TVP)

Internal ClearanceCN (Normal), C3, C4 Radial Clearance

Operating Temperature-30°C to +120°C (Standard Configuration)

PRIMARY APPLICATION SCENARIOS

Electric Motors

Used as the non-locating bearing to manage radial loads and rotor thermal expansion.

Industrial Gearboxes

Integrated into power transmission systems where high radial forces and shock loads occur.

Machine Tool Spindles

Providing rigid support for high-precision shafts requiring axial positioning.

Automotive Drivetrains

Supporting axle shafts and transmissions in commercial and heavy-duty vehicles.

Centrifugal Pumps

Managing high-speed impeller shaft stabilization under continuous industrial fluid processing.

Storage Guidelines

NJ200 Series bearings should be stored horizontally in a dry, vibration-free environment with a constant temperature. Relative humidity must be maintained below 60% to prevent atmospheric corrosion. Bearings must remain in their original VCI (Vapor Corrosion Inhibitor) protective packaging until immediately before mounting.

Installation and Usage Notes

Mounting Force Always utilize a mounting sleeve or induction heater. Never apply impact force directly to the rollers or the rib of the rings, as this leads to cracked ribs or surface denting.

Lubrication Selection Ensure the lubricant matches the viscosity requirements of the operating speed and load. For grease-lubricated NJ200 bearings, do not overfill, as excessive grease leads to frictional heating.

Alignment Verification Precision alignment of the shaft and housing bores is critical; misalignment exceeding a few minutes of arc can cause concentrated edge loading on the rollers.

Component Matching Since NJ series bearings are separable, ensure that the inner and outer rings from the same manufacturer are used together to maintain specified radial internal clearance.

Designation	Principal Dimensions(mm)					Basic Load Ratings(KN)		Limited Speed(rpm)		Weight
Designation	d	D	B	rs min	rs1min	Dynamic(Cr)	Static(Cor)	Grease	Oil	(kg)
NJ204E	20	47	14	1	0.6	25.7	22.6	15000	18000	0.122
NJ205E	25	52	15	1	0.6	29.3	27.7	13000	15000	0.151
NJ206E	30	62	16	1	0.6	39	37.5	11000	13000	0.226
NJ207E	35	72	17	1.1	0.6	50.5	50	9500	11000	0.327
NJ208	40	80	18	1.1	1.1	43.5	43	9400	11000	0.378
NJ208E	40	80	18	1.1	1.1	55.5	55.5	8500	10000	0.426
NJ209	45	85	19	1.1	1.1	46	47	8400	9900	0.432
NJ209E	45	85	19	1.1	1.1	63	66.5	7600	9000	0.495
NJ210	50	90	20	1.1	1.1	48	51	7600	9000	0.47
NJ210E	50	90	20	1.1	1.1	66	72	6900	8100	0.54
NJ211	55	100	21	1.5	1.1	58	62.5	6900	8200	0.638
NJ211E	55	100	21	1.5	1.1	82.5	93	6300	7400	0.718
NJ212	60	110	22	1.5	1.5	68.5	75	6400	7600	0.818
NJ212E	60	110	22	1.5	1.5	97.5	107	5800	6800	0.923
NJ213	65	120	23	1.5	1.5	84	94.5	5900	7000	1.02
NJ213E	65	120	23	1.5	1.5	108	119	5400	6300	1.21
NJ214	70	125	24	1.5	1.5	83.5	95	5500	6500	1.12
NJ214E	70	125	24	1.5	1.5	119	137	5000	5900	1.3
NJ215	75	130	25	1.5	1.5	96.5	111	5100	6000	1.23
NJ215E	75	130	25	1.5	1.5	130	156	4700	5500	1.41
NJ216	80	140	26	2	2	106	122	4800	5700	1.5
NJ216E	80	140	26	2	2	139	167	4400	5100	1.67
NJ217	85	150	28	2	2	120	140	4500	5300	1.87
NJ217E	85	150	28	2	2	167	199	4100	4800	2.11
NJ218	90	160	30	2	2	152	178	4300	5000	2.3
NJ218E	90	160	30	2	2	182	217	3900	4600	2.44
NJ219	95	170	32	2.1	2.1	166	195	4000	4700	2.78
NJ219E	95	170	32	2.1	2.1	220	265	3600	4300	3.02
NJ220	100	180	34	2.1	2.1	183	217	3800	4500	3.33
NJ221	105	190	36	2.1	2.1	201	241	3600	4300	3.95
NJ222	110	200	38	2.1	2.1	240	290	3400	4000	4.63
NJ224	120	215	40	2.1	2.1	260	320	3200	3700	5.57
NJ226	130	230	40	3	3	270	340	2900	3400	6.3
NJ226E	130	230	40	3	3	365	455	2600	3100	6.9
NJ228	140	250	42	3	3	310	400	2700	3100	7.88
NJ228E	140	250	42	3	3	395	515	2400	2800	8.73
NJ230	150	270	45	3	3	345	435	2500	2900	9.92
NJ230E	150	270	45	3	3	450	595	2200	2600	11

NJ200 Series

NJ200 Series Cylindrical Roller Bearings

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