N Series

N series single row cylindrical roller bearings feature double ribs on inner ring and ribless outer ring. Separable structure allows bidirectional axial floating to compensate shaft thermal expansion. It supports heavy radial loads only with high rigidity and high speed performance, widely used as floating end bearings for motors, gearboxes, fans and compressors.

Classification :

Cylindrical Roller Bearings

Keywords :

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N Series Cylindrical Roller Bearings

Full size N single row cylindrical roller bearings. Separable structure, high radial load capacity, free axial displacement. Interchangeable with mainstream brands, factory direct bulk supply for gearbox, mining and construction machinery.

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Structure & Advantages

N single row cylindrical roller bearing has two ribs on inner ring and ribless outer ring. It can bear large radial load and allow free axial displacement. The inner ring and outer ring can be separated, convenient for installation and maintenance, widely used for floating end support.

✅ Separable inner & outer ring

✅ Pure radial load bearing

✅ Free axial floating compensation

✅ High dynamic load rating

✅ Interchangeable with mainstream brands

Application Industries

Gearboxes

Mining Equipment

Agricultural Machinery

Construction Machinery

Conveyors

Wind Power Auxiliary

Electric Motors

N Series Full Size Charts

N10 Series Cylindrical Roller Bearing

Model	d(mm)	D(mm)	B(mm)	Dynamic Load(kN)	Static Load(kN)	Limiting Speed(r/min)
N1005 C3	25	47	12	17.2	14.5	16000
N1006 EM	30	55	13	22.8	19.2	13000
N1007 C4	35	62	14	27.5	23.8	12000
N1008 E	40	68	15	32.2	28.5	11000
N1009 M	45	75	16	38.0	34.2	10000
N1010 C3	50	80	16	41.5	38.0	9500
N1011 EM	55	90	18	50.2	46.8	8500
N1012 C4	60	95	18	54.0	51.0	8000
N1013 E	65	100	18	57.8	55.5	7500
N1014 M	70	110	20	69.5	66.2	7000

N22 Series Cylindrical Roller Bearing

Model	d(mm)	D(mm)	B(mm)	Dynamic Load(kN)	Static Load(kN)	Limiting Speed(r/min)
N2204E C3	20	47	18	37.2	28.5	13000
N2205E EM	25	52	18	42.5	33.2	11000
N2206E C4	30	62	20	55.8	44.0	9500
N2207E E	35	72	23	70.2	56.5	8500
N2208E M	40	80	23	79.5	64.8	7500
N2209E C3	45	85	23	83.2	69.5	7000
N2210E EM	50	90	23	88.5	75.2	6700
N2211E C4	55	100	25	102	87.8	6000
N2212E E	60	110	28	122	105	5600
N2213E M	65	120	31	148	128	5000

N23 Series Cylindrical Roller Bearing

Model	d(mm)	D(mm)	B(mm)	Dynamic Load(kN)	Static Load(kN)	Limiting Speed(r/min)
N2304E C3	20	52	21	46.8	34.0	12000
N2305E EM	25	62	24	62.2	46.5	10000
N2306E C4	30	72	27	79.8	60.5	8500
N2307E E	35	80	31	98.5	76.2	7500
N2308E M	40	90	33	118	92.5	6700
N2309E C3	45	100	36	142	112	6000
N2310E EM	50	110	40	170	135	5300
N2311E C4	55	120	43	198	158	4800
N2312E E	60	130	46	228	185	4500
N2313E M	65	140	48	255	212	4000

N3 Series Cylindrical Roller Bearing

Model	d(mm)	D(mm)	B(mm)	Dynamic Load(kN)	Static Load(kN)	Limiting Speed(r/min)
N304E C3	20	52	15	34.5	26.2	12500
N305E EM	25	62	17	45.8	35.0	10500
N306E C4	30	72	19	58.2	44.8	9000
N307E E	35	80	21	70.5	54.2	8000
N308E M	40	90	23	85.2	66.8	7000
N309E C3	45	100	25	102	80.5	6300
N310E EM	50	110	27	120	95.8	5600
N311E C4	55	120	29	140	112	5300
N312E E	60	130	31	162	130	4800
N313E M	65	140	33	185	150	4300

N4 Series Cylindrical Roller Bearing

Model	d(mm)	D(mm)	B(mm)	Dynamic Load(kN)	Static Load(kN)	Limiting Speed(r/min)
N406 C3	30	90	23	82.5	61.2	7200
N407 EM	35	100	25	98.8	73.5	6400
N408 C4	40	110	27	115	86.8	5800
N409 E	45	120	29	132	100	5200
N410 M	50	130	31	150	115	4800
N411 C3	55	140	33	168	130	4400
N412 EM	60	150	35	188	148	4000
N413 C4	65	160	37	208	165	3800
N414 E	70	180	42	245	195	3400
N415 M	75	190	45	272	220	3200

Frequently Asked Questions

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

N type single row cylindrical roller bearing features double ribs on inner ring and ribless outer ring. It can bear heavy radial load and allows free axial displacement, which is commonly used as floating end bearing. It is widely applied in gearboxes, mining machinery, construction equipment, electric motors and conveyor systems.

What is the difference between N and NU cylindrical roller bearing?

N bearing has double ribs on inner ring and ribless outer ring. NU bearing has double ribs on outer ring and ribless inner ring. Both can float axially, but the floating direction and installation fit are different for shaft and housing arrangements.

Can your N bearings fully interchange with mainstream brand bearings?

Yes. Our N 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 N bearing orders?

Most standard N10, N22, N23, N3 and N4 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 N 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.

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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