Custom N1000 Series Cylindrical Roller Bearings Manufacturers, Factory

N1000 Series

The N1000 Series Cylindrical Roller Bearings are precision-engineered components designed to handle significant radial loads in high-speed rotating machinery. This series features a single row of rollers guided by the ribs of the inner ring, while the outer ring has no ribs, allowing for axial displacement between the shaft and housing in both directions. The internal geometry is optimized for reduced friction and heat generation, facilitating stable operation at high rotational frequencies. Utilizing high-carbon chromium steel (GCZ15/SAE 52100) and precision-machined cages, these bearings ensure dimensional stability and consistent clearance control across various industrial environments.

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N-TYPE · CYLINDRICAL ROLLER · RIBLESS OUTER RING

N Series Cylindrical Roller Bearings

line contact geometry

axial displacement free

P6 / P5 precision

High Radial Load Capacity

The line contact between the cylindrical rollers and the raceways enables these bearings to support much higher radial forces compared to ball bearings of similar dimensions.

Axial Displacement Capability

As N-type bearings, the ribless outer ring allows the shaft to move freely relative to the housing, accommodating thermal expansion without inducing internal axial stress.

High-Speed Performance

Low-friction roller-end geometry and specialized cage designs (available in brass or reinforced polymer) reduce centrifugal forces and heat buildup at high RPMs.

Precision Tolerance Standards

Manufactured according to P6 or P5 precision classes (ISO standards) to minimize vibration and ensure rotational accuracy.

Technical specifications

Bore diameter range25mm - 150mm

Outer diameter range52mm - 225mm

Width range15mm - 35mm

Dynamic load rating28kN - 220kN

Limiting speed (grease)5000 - 12000 rpm

Cage optionsBrass (M) / Polyamide (TVP) / Steel (J)

Application scenarios

Electric Motors

Used at the non-locating end of large and medium-sized motors to accommodate rotor expansion.

Machine Tool Spindles

Provides radial rigidity and high-speed stability for precision milling and grinding equipment.

Gearboxes and Transmissions

Manages radial loads in heavy-duty industrial reducers where axial movement is required.

Railway Axles

Found in traction motors and axle boxes due to their resistance to impact and heavy loading.

Handling and Storage Conditions

Bearings must be stored in their original, unopened packaging in a temperature-controlled environment with a relative humidity not exceeding 60%. Avoid direct contact with the floor and keep away from heat sources or chemical vapors to prevent oxidation of the anti-rust coating.

Mounting Precautions

Use induction heaters for shrink-fitting to ensure uniform expansion. Do not apply direct hammer blows to the rings, as this may cause brinelling (permanent indentations) on the raceways. Ensure the shaft and housing bores are cleaned and checked for roundness and dimensional tolerance before assembly.

Lubrication Management

Select lubricants based on the operating temperature and DN factor (mean diameter multiplied by RPM). Over-greasing can lead to churning and excessive operating temperatures; typically, the free space in the bearing should be filled between 30% and 50% for standard applications.

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)
N1005	25	47	12	0.6	0.3	15.1	14.1	16000	19000	0.091
N1006	30	55	13	1	0.6	19.7	19.6	14000	16000	0.128
N1007	35	62	14	1	0.6	22.6	23.2	12000	15000	0.176
N1008	40	68	15	1	0.6	27.3	29	11000	13000	0.217
N1009	45	75	16	1	0.6	31	34	9900	12000	0.276
N1010	50	80	16	1	0.6	32	36	8900	11000	0.291
N1011	55	90	18	1.1	1	37.5	44	8200	9700	0.435
N1012	60	95	18	1.1	1	40	48.5	7500	8800	0.467
N1013	65	100	18	1.1	1	41	51	7000	8200	0.477
N1014	70	110	20	1.1	1	58.5	70.5	6500	7600	0.689
N1015	75	115	20	1.1	1	60	74.5	6100	7100	0.727
N1016	80	125	22	1.1	1	72.5	90.5	5700	6700	0.965
N1017	85	130	22	1.1	1	74.5	95.5	5400	6300	1.01
N1018	90	140	24	1.5	1.1	88	114	5100	5900	1.31
N1019	95	145	24	1.5	1.1	90.5	120	4800	5600	1.38
N1020	100	150	24	1.5	1.1	93	126	4600	5400	1.43
N1021	105	160	26	2	1.1	105	142	4300	5100	1.81
N1022	110	170	28	2	1.1	131	174	4100	4800	2.3
N1024	120	180	28	2	1.1	139	191	3800	4400	2.4
N1026	130	200	33	2	1.1	172	238	3400	4000	3.63
N1028	140	210	33	2	1.1	176	250	3200	3800	3.98
N1030	150	225	35	2.1	1.5	202	294	3000	3500	4.7

N1000 Series

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