NJ Series

Name: NJ Series Cylindrical Roller Bearings
Brand: YJZY
Availability: InStock

Single row cylindrical roller bearings are designed to accommodate high radial loads in combination with high speeds. Having two integral flanges on the outer ring and one on the inner ring, NJ design bearings can accommodate axial displacement in one direction. An important feature is the separable design, which ease of assembly and fitting and axial location.

Classification :

Cylindrical Roller Bearings

Keywords :

NJ series cylindrical roller bearings, NJ200 series, NJ300 E series, one-way axial positioning bearings, separable cylindrical roller bearings, gearbox bearings, motor bearings, high rigidity radial bearings, E series cylindrical roller bearings

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NJ Series Cylindrical Roller Bearings

NJ single row cylindrical roller bearings are separable rolling bearings designed to withstand heavy radial loads and one-way axial loads. We supply full NJ10, NJ22, NJ23, NJ3 and NJ4 series standard bearings with complete size charts. Our NJ cylindrical roller bearings can directly replace mainstream brand models, widely used in gearboxes, mining equipment, construction machinery, agricultural machinery and conveyor systems. Factory direct bulk supply with fast delivery and reliable quality.

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Structure & Advantages of NJ Cylindrical Roller Bearings

NJ type single row cylindrical roller bearing adopts double ribs on the outer ring and single rib on the inner ring structure. The inner ring, outer ring and roller assembly can be separated freely, which greatly simplifies installation, disassembly and maintenance work. It features high radial load capacity and can bear unidirectional axial force, suitable for high speed and heavy load transmission conditions. Our factory strictly controls raw material, heat treatment and precision grinding to guarantee long service life and stable running performance.

✅ Separable inner & outer ring

✅ Radial + one-way axial load

✅ High dynamic load rating

✅ Interchangeable with mainstream brands

✅ Stock available, short lead time

Application Industries of NJ Roller Bearings

NJ cylindrical roller bearings are widely adopted in heavy-duty industrial transmission fields, as listed below:

Gearboxes

Mining Equipment

Agricultural Machinery

Construction Machinery

Conveyors

Pumps

Wind Power Auxiliary

NJ Series Full Size Charts

Below are standard dimensions, dynamic/static load ratings and limiting speed data of NJ series cylindrical roller bearings. Use the search box to quickly filter target bearing models.

NJ10 Series Cylindrical Roller Bearing

Model	d(mm)	D(mm)	B(mm)	Dynamic Load(kN)	Static Load(kN)	Limiting Speed(r/min)
NJ1005 C3	25	47	12	17.2	14.5	16000
NJ1006 EM	30	55	13	22.8	19.2	13000
NJ1007 C4	35	62	14	27.5	23.8	12000
NJ1008 E	40	68	15	32.2	28.5	11000
NJ1009 M	45	75	16	38.0	34.2	10000
NJ1010 C3	50	80	16	41.5	38.0	9500
NJ1011 EM	55	90	18	50.2	46.8	8500
NJ1012 C4	60	95	18	54.0	51.0	8000
NJ1013 E	65	100	18	57.8	55.5	7500
NJ1014 M	70	110	20	69.5	66.2	7000

NJ22 Series Cylindrical Roller Bearing

Model	d(mm)	D(mm)	B(mm)	Dynamic Load(kN)	Static Load(kN)	Limiting Speed(r/min)
NJ2204E C3	20	47	18	37.2	28.5	13000
NJ2205E EM	25	52	18	42.5	33.2	11000
NJ2206E C4	30	62	20	55.8	44.0	9500
NJ2207E	35	72	23	70.2	56.5	8500
NJ2208E M	40	80	23	79.5	64.8	7500
NJ2209E C3	45	85	23	83.2	69.5	7000
NJ2210E EM	50	90	23	88.5	75.2	6700
NJ2211E C4	55	100	25	102	87.8	6000
NJ2212E	60	110	28	122	105	5600
NJ2213E M	65	120	31	148	128	5000

NJ23 Series Cylindrical Roller Bearing

Model	d(mm)	D(mm)	B(mm)	Dynamic Load(kN)	Static Load(kN)	Limiting Speed(r/min)
NJ2304E C3	20	52	21	46.8	34.0	12000
NJ2305E EM	25	62	24	62.2	46.5	10000
NJ2306E C4	30	72	27	79.8	60.5	8500
NJ2307E	35	80	31	98.5	76.2	7500
NJ2308E M	40	90	33	118	92.5	6700
NJ2309E C3	45	100	36	142	112	6000
NJ2310E EM	50	110	40	170	135	5300
NJ2311E C4	55	120	43	198	158	4800
NJ2312E	60	130	46	228	185	4500
NJ2313E M	65	140	48	255	212	4000

NJ3 Series Cylindrical Roller Bearing

Model	d(mm)	D(mm)	B(mm)	Dynamic Load(kN)	Static Load(kN)	Limiting Speed(r/min)
NJ304E C3	20	52	15	34.5	26.2	12500
NJ305E EM	25	62	17	45.8	35.0	10500
NJ306E C4	30	72	19	58.2	44.8	9000
NJ307E	35	80	21	70.5	54.2	8000
NJ308E M	40	90	23	85.2	66.8	7000
NJ309E C3	45	100	25	102	80.5	6300
NJ310E EM	50	110	27	120	95.8	5600
NJ311E C4	55	120	29	140	112	5300
NJ312E	60	130	31	162	130	4800
NJ313E M	65	140	33	185	150	4300

NJ4 Series Cylindrical Roller Bearing

Model	d(mm)	D(mm)	B(mm)	Dynamic Load(kN)	Static Load(kN)	Limiting Speed(r/min)
NJ406 C3	30	90	23	82.5	61.2	7200
NJ407 EM	35	100	25	98.8	73.5	6400
NJ408 C4	40	110	27	115	86.8	5800
NJ409 E	45	120	29	132	100	5200
NJ410 M	50	130	31	150	115	4800
NJ411 C3	55	140	33	168	130	4400
NJ412 EM	60	150	35	188	148	4000
NJ413 C4	65	160	37	208	165	3800
NJ414 E	70	180	42	245	195	3400
NJ415 M	75	190	45	272	220	3200

Frequently Asked Questions

What is NJ cylindrical roller bearing and where is it widely used?

NJ type single row cylindrical roller bearing features double ribs on outer ring and single rib on inner ring. It can bear heavy radial load and one-way axial load. It is widely applied in gearboxes, mining machinery, construction equipment, agricultural machines and conveyor systems, which is a preferred solution for heavy-duty transmission systems.

Can your NJ bearings fully interchange with mainstream brand bearings?

Yes. Our NJ series cylindrical roller bearings follow standard dimensional and tolerance specifications, which can directly replace corresponding models of mainstream brands without modifying installation structure. We strictly control raw material and heat treatment to guarantee consistent performance.

What is your lead time and stock availability for bulk NJ bearing orders?

Most standard NJ10, NJ22, NJ23, NJ3 and NJ4 models are in ready stock. For bulk orders, we can arrange shipment within 3-7 working days. Custom non-standard models will take 15-30 days based on quantity and technical requirements.

What quality certification and inspection can you provide for large distributors?

We support full batch inspection and provide test reports, material certificates and certification documents as required. Every batch of bearings will go through dimensional check, clearance testing and noise detection before delivery to meet the quality requirements of large distributors and equipment manufacturers.

Can you customize cage material, internal clearance or special coating for NJ bearings?

Yes. We supply steel cage, brass cage and polyamide cage options. Custom internal clearance (C2/C3/C4/C5), black oxide coating and high temperature treatment are available to adapt to special working conditions such as high speed, heavy load and dusty environment.

Request Quotation

Send us your required NJ bearing model, quantity and working condition, we will reply competitive quotation quickly.

Related Bearing Products

Category Overview

Cylindrical Roller Bearings are radial rolling bearings with cylindrical rolling elements that make line contact with raceways. They feature high radial load capacity, high rigidity, high-speed capability, and low friction.Most types can accommodate axial displacement between shaft and housing, and some structures allow carrying axial loads. They are widely used in motors, gearboxes, pumps, compressors, machine tools and other heavy‑duty rotating equipment.

Our Series Breakdown

We offer a complete range of cylindrical roller bearing series to suit different positioning and load requirements:

Series	Features	Typical Applications
NU Series	Floating bearing, free axial displacement, high radial load	Motors, fans, general machinery
NJ Series	Locates shaft in one axial direction, high rigidity	Gearboxes, reducers, machine tool spindles
NUP Series	Locates shaft in both axial directions, fixed positioning	Heavy gearboxes, compressors, pumps
N Series	Outer ring with two ribs, inner ring without ribs	General industrial transmission equipment
NF Series	Single-direction axial location, compact structure	Small‑to‑medium gearboxes and motors
RN Series	Without outer ring, fits directly into housing bore	Hydraulic pumps, construction machinery
RNU Series	Without inner ring, fits directly onto shaft	Special transmission mechanisms, compact equipment

Core Advantages

Extremely high radial load capacity and strong impact resistance
High rigidity and excellent high-speed performance
Low friction, stable operation, long service life
Allow axial thermal expansion of shaft (floating types)
Separable structure for easy installation and maintenance
Available in open, sealed and precision grades

🛠️ Typical Applications

Widely used in electric motors, gearboxes, reducers, pumps, compressors, machine tool spindles, fans, rolling mills, automotive transmissions, and other heavy‑duty industrial machinery.

PRODUCT TESTING

Bearing Forging

Bearing Annealing

Turning Process

Quenching

Bearing Assembly

Bearing Clearance Testing

Grease injection

Bearing Marking

Cylindrical Roller Bearings