Custom NF2200 Series Cylindrical Roller Bearings Manufacturers, Factory

NF2200 Series

The NF2200 Series Cylindrical Roller Bearings are high-capacity precision units designed to support heavy radial loads while accommodating axial displacement in one direction. Architecturally, the NF design features two integral ribs on the outer ring and a single integral rib on the inner ring. This configuration allows the bearing to provide axial shaft location and withstand intermittent thrust loads. Manufactured from high-carbon chromium steel (GCr15), the NF2200 series undergoes rigorous heat treatment to achieve a stabilized microstructure capable of operating under high-frequency vibration and rotational speeds. The internal cylindrical rollers are ground to logarithmic profiles to optimize stress distribution across the contact surfaces, effectively reducing edge stress and extending the operational life of the mechanical assembly.

Send inquiry

Technical Specifications and Engineering Overview: NF2200 Series Cylindrical Roller Bearings

Core Technical Advantages

Unidirectional Axial Loading: The single-rib inner ring enables the bearing to guide the shaft axially in one direction, simplifying the housing design.
High Radial Stiffness: Linear contact between the rollers and raceways provides superior load-bearing capacity compared to point-contact ball bearings of equivalent dimensions.
Reduced Friction Torque: Precision-machined cages (brass or steel) minimize roller-to-cage friction, facilitating lower operating temperatures at high RPMs.
Separable Component Design: The inner or outer rings can be mounted independently, streamlining the installation and maintenance processes in complex machinery.

Key Product Characteristics

Technical Parameter	Specification Detail
Series Designation	NF2200 (Dimension Series 22)
Material Composition	GCr15 Bearing Steel / SAE 52100
Precision Class	P0 (Normal), P6, P5
Internal Clearance	C0 (Normal), C2, C3, C4
Cage Variants	M (Machined Brass), W (Pressed Steel), TVP (Polyamide)
Configuration	Separable Inner Ring with Single Rib

Primary Application Scenarios

Electric Motors and Generators: Providing rigid radial support for rotor shafts while managing thermal expansion.
Industrial Gearboxes: Handling heavy loads in speed reducers where precise shaft alignment is critical.
Machine Tool Spindles: Utilized in assemblies requiring high radial rigidity and minimal runout.
Railway Axle Boxes: Supporting heavy-duty transportation systems where impact resistance and durability are required.

Operational Guidelines and Maintenance

Storage and Handling

The NF2200 Series bearings must be kept in their original VCI (Vapor Corrosion Inhibitor) packaging until the moment of installation. Storage facilities should maintain a constant temperature between 15°C and 25°C with relative humidity not exceeding 60%. Bearings should be stored horizontally to prevent axial deformation over extended periods.

Installation and Usage Precautions

Mounting Force: Always use a mounting sleeve or induction heater. Never apply direct impact to the rings or rollers, as this causes raceway denting (brinelling).
Lubricant Compatibility: Ensure the grease or oil selected matches the viscosity requirements for the calculated operating temperature and load conditions.
Shaft and Housing Tolerances: Verify that the seating surfaces meet the ISO tolerance grades (e.g., k6 or m6 for shafts) to ensure the correct interference fit.
Cleaning Protocol: Do not remove the preservative coating unless specified, as it is compatible with most standard mineral-based lubricants.

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)
NF2203EM	17	40	16	0.6	0.3	24	22	16000	18000	0.095
NF2204EM	20	47	18	1	0.6	22.2	20.3	15000	18000	0.141
NF2205EM	25	52	18	1	0.6	23.7	22.8	10000	14000	0.168
NF2206EM	30	62	20	1	0.6	23.9	33.1	7500	11000	0.3
NF2207EM	35	72	23	1.1	0.6	49	51.2	6500	9500	0.45
NF2208EM	40	80	23	1.1	1.1	58.3	62	6000	9000	0.49
NF2209EM	45	85	23	1.1	1.1	61.4	67.8	5300	8000	0.54
NF2210EM	50	90	23	1.1	1.1	64.2	73.6	5000	7500	0.65
NF2211EM	55	100	25	1.5	1.1	75.3	87.2	4300	6700	0.77
NF2212EM	60	110	28	1.5	1.5	101	123	4000	6300	1.09
NF2213EM	65	120	31	1.5	1.5	120	149	3500	5600	1.55
NF2214EM	70	125	31	1.5	1.5	119	151	3300	5300	1.7
NF2215EM	75	130	31	1.5	1.5	135	172	3000	5000	1.8
NF2216EM	80	140	33	2	2	148	186	2800	4800	2.2
NF2217EM	85	150	36	2	2	169	218	2600	4500	2.8
NF2218EM	90	160	40	2	2	207	265	2400	4300	3.6
NF2219EM	95	170	43	2.1	2.1	230	298	2200	4000	4.3
NF2220EM	100	180	46	2.1	2.1	259	338	2000	3800	5.99
NF2222EM	110	200	53	2.1	2.1	334	442	1600	3400	8.7
NF2224EM	120	215	58	2.1	2.1	367	492	1200	3000	9.55
NF2226EM	130	230	64	3	3	395	560	1000	2800	11.9