/ Single row cylindrical roller bearings

nj211 bearing

1.Product Introduction: Model NJ211, with an inner diameter of 55mm, the inner ring has a single rib, suitable for small positioning shaft systems.
2.Structure Type: The outer ring has double ribs, the inner ring has a single rib, with a single row of rollers + cage, and it is open - type.
3.Size Range: Inner diameter 55mm, outer diameter 100mm, width 21mm.
4.Material: Inner ring /outer ring /rollers: GCr15/GCR15SIMN/20Cr2Ni4A, cage: stamped 钢 /brass.
5.Precision: P0 level, precision version is P6/P5 level.
6.Application Fields: Small electric motors, reducers, machine tool feed shafts, automobile auxiliary transmission systems.
7.Key Inspection Items: Radial clearance (0.01 - 0.03mm), axial load-bearing capacity, dimensional accuracy.

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Product Description

Data Sheet

NJ211 Bearing: High-Performance Solution for Extreme Industrial Demands

When your machinery operates under relentless stress—high temperatures, heavy radial loads, or corrosive environments—the NJ211 bearing stands as a trusted ally. Engineered for precision and durability, this cylindrical roller bearing combines a 55mm bore, 100mm outer diameter, and 21mm width with advanced heat treatment and material science. Ideal for metallurgical equipment, port machinery, and heavy-duty industrial systems, the NJ211 delivers unmatched performance in extreme conditions.

product-750-750

Key Features

500°C Heat Resistance: Stable operation in smelting furnaces and rolling mills.
Radial Load Capacity up to 63.4kN: Built for high-pressure environments.
ISO 9001 & API 613 Compliance: Globally recognized quality standards.
Precision Grinding: P4/P5-grade accuracy for reduced vibration.

Technical Specifications & Applications

Parameter	Value
Bore Diameter	55mm
Outer Diameter	100mm
Width	21mm
Dynamic Load Rating	63.4kN
Precision Grades	P0 (Standard), P6/P5 (High-Precision)
Material	GCr15 Steel / Custom Alloys

Industries Served

Rolling Mills
Continuous Casting Machines
Smelting Furnace Conveyors
Heavy-Duty Gearboxes

Why Choose the NJ211 Bearing?

1. Engineered for Extreme Conditions

Crafted from high-purity GCr15 steel and subjected to carburizing treatments, the NJ211 cylindrical roller bearing resists wear and deformation even under 150°C. Lab tests show a 20% longer lifespan compared to industry averages in high-heat scenarios.

2. Customization Agility

Need a non-standard solution? Modify dimensions (±5mm OD), upgrade to stainless steel or ceramic hybrids, or add IP6X sealing for dusty environments—all within 72 hours.

3. Rigorous Quality Assurance

Every NJ211 undergoes:

1. Material Spectroscopy: Verify steel purity.

2. Hardness Testing: HRC 60-64 consistency.

3. Vibration Analysis: <62dB noise levels (ISO 15242-2).

4. Fast Global Delivery

With 500+ NJ211 bearings in stock and regional hubs in the UAE, Germany, and Texas, 80% of standard orders ship in 48 hours. Custom batches ready in 15 days—30% faster than competitors.

Technical Support & Lifespan Optimization

24/7 Remote Troubleshooting: Scan the QR code below for installation guides.
IoT Predictive Maintenance: Real-time wear analytics and lubrication alerts via SMS/email.
5-Year Extended Warranty: Available for bulk orders.

Shipping Partners: DHL, FedEx | Incoterms: FOB, CIF, DDP

FAQ

1. Can the NJ211 handle axial loads in port machinery?

Yes, its double-ribbed outer ring and reinforced cage design support moderate axial loads alongside heavy radial forces.

2. What certifications do your bearings hold?

We comply with ISO 9001, API 613, CE, and GOST. Certificates available upon request.

3. How quickly can you deliver to North America?

Standard NJ211 orders ship from Texas in 24-48 hours.

4. Do you offer on-site installation support?

Yes—our engineers can assist with integration into continuous casting systems or rolling mills.

5. What lubrication is recommended for high-temperature NJ211 variants?

We recommend synthetic high-temperature grease (e.g., SKF LGHP 2) for 150°C+ environments.

Contact Us

Get Your NJ211 Bearing Quote Today

500+ units ready to ship. Optimize your machinery's performance with a bearing designed for endurance.

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📧 Email: sales@inno-bearing.com

d120～140mm
Overall Dimensions					Rated Load		Limiting Rotational Speed		Bearing Designation		Shaft Diameter	Other Dimensions				Mounting Dimensions					Weight
d	D	B	rmin	r1min	Dynamic Load C	Static Load C₀	Grease	Oil	Current Model	Original Model	Shaft Diameter	d1	D1	E	F	damin	Damax	Dbmin	ramax	rbmax	Weight
mm					kN		r/min				mm	mm				mm					kg
120	217	58	2.1	2.1	380	520	2400	3000	N2224MX1/CN2		120	152	188	196		140		206	2	2	9.7
	240	80	3	3	477	408	2400	3200	NJ 3224X3Q1/S0	42724QT	120	162	194	150		134	226		3	3	17.1
	240	80	3	3	477	408	2400	3200	NJ3224X3M	42724QT	120	162	194	150		134	226		2.5	2.5	17.8
	240	80	3	3	477	408	2400	3200	NJ3224X3Q1	42724H	120	161	199	150		134	226		3	3	17.7
	260	55	3	3	537	623	1900	2400	N324EM		120	168		230		134		230	2.5	2.5	14.4
	260	55	3	3	537	623	1900	2400	NU324EM		120		219	154		134	246		2.5	2.5	14.5
	260	86	3	3	285	1020	1900	2400	NU 2324EM	32624EH	120		219	154		134	246		2.5	2.5	23.8
	260	86	3	3	285	1020	1900	2400	NU2324EM/YA1	32624EHY	120		219	154		134	246		2.5	2.5	23.8
	260	86	3		785	1020	1900	2400	NJ 2324EM/C9S0		120	168	216	154		134	246		2.5	2.52	23.6
130	200	33	2	1.1	213	315	3200	3800	N1026M		130	154.2	182			137		190	2	1	3.48
	200	33	2	1.1	172	238	3200	3800	NU 1026Q1	32126Q	130		174	148		137	191		2	1	3.83
	200	33	2	1.1	172	238	3200	3800	NU1026M	32126H	130		174	148		137	191		2	1	3.84
	230	40	3	3	371	466	2200	2800	NU 226EM		130		202	154		144	216		2.5	2.5	7.11
	230	40	3	3	288	372	2200	2800	NU 226Q1/P53S	O	130		193	156		144	216		2.5	2.5	7.12
	250	80	3	3	604	807	2200	3000	NJ3226x1M	42726H	130	170	208	158		144	236		2.5	2.5	18.7
	250	80	3	3	604	807	2200	3000	NJ3226x1Q1/SO	42726QT	130	171	205		158	144	236		3	3	18.7
	250	80	3	3	604	807	2200	3000	NJP3226X1		130	171	206	158		144	236		3	3	18.5
	250	80	3	3	604	807	2200	3000	NJ3226X1		130	171	206		158	144	236		3	2.5	18.3
	280	58	4	4	590	694	1800	2200	N326EM		130	182		247		148		247	3	3	18.2
	280	58	4	4	590	694	1800	2200	NU326EM		130		236	167		148	262		3	3	18.3
	280	93	4	4	920	1230	1800	2200	NU2326EM		130		236	167		148	262		3	3	28.8
	280	93	4	4	920	1230	1800	2200	NJ 2326EM		130	181	236	167		148	262		3	3	29.5
	340	78	5	5	825	955	1500	1900	NU 426M	32426H	130		265	183		150	320		4	4	41.5
	340	78	5	5	825	955	1500	1900	NJ426M	42426H	130	203	265	183		150	320		4	4	41.7
	340	78	5	5	825	955	1500	1900	NU426Q1	32426Q	130	203	262	185		150	320		4	4	39.2
140	210	33	2	1.1	212	317	3000	3600	NU 1028 M		140		185	158		147	201		2	1	4.03
140	210	33	2	1.1	212	317	3000	3600	NU1028Q1/P64		140		185		158	147	201		2	1	4.03
d 140～160mm
Overall Dimensions					Rated Load		Limiting Rotational Speed		Bearing Designation		Shaft Diameter	Other Dimensions				Mounting Dimensions					Weight
d	D	B	rmin	r1min	Dynamic Load C	Static Load C₀	Grease	Oil	Current Model	Original Model	Shaft Diameter	d1	D1	E	F	damin	Damax	Dbmin	ramax	rbmax	Weight
mm					kN		r/min				mm	mm				mm					kg
140	250	42	3	3	406	536	2000	2600	NJ228EF1		140	180	217	169		154	236		2.5	2.5	11.6
	250	42	3	3	406	536	2000	2600	NU 228 EF1		140		217	169		154	236		2.5	2.5	10.9
	250	42	3	3	389	507	2000	2600	NJ228EM		140	180	217	169		154	236		2.5	2.5	9.35
	250	42	3	3	389	507	2000	2600	NU 228EM		140		217	169		154	236		2.5	2.5	8.72
	250	42	3	3	406	556	2000	2600	NU228EL	32228 EL	140		217	169		154	236		2.5	2.5	8.97
	250	68	3	3	547	787	2000	2600	NJ 2228 EM	42528EH	140	179	217	169		154	236		2.5	2.5	17
	250	68	3	3	547	787	2000	2600	NJ2228Q1/C4S0		140	179	217	169		154	236		2.5	2.5	15.5
	250	68	3	3	547	787	2000	2600	NU2228Q1/C4S0		140		217	169		154	236		2.5	2.5	15.1
	250	68		3	577	843	2000	2600	NU2228EM/P5		140		217	169		154	236		2.5	2.5	14.4
	250	82.55	3	3	661	1060	2000	2600	NU 3228X2M		140		213	169		154	236		2.5	2.5	18.4
	300	62	4	4	624	758	1980	2490	NJ328Q1/P64S0	4E42328EQTY	140	194	249	180		158	282		3	3	21.5
	300	62	4	4	624	758	1800	2200	NU 328Q1/P63SO	3E32328EQT	140		249	180		158	282		3	3	21.6
	300	62	4	4	624	758.	1800	2200	N328EM		140	194		260		156		265	3	3	21.7
	300	102	4	4	959	1320	1800	2200	NJ 2328EM		140	194	249	180		158	282		3	3	37.3
	300	102	4	4	959	1320	1800	2200	NU 2328EM		140		249	180		158	282		3	3	36.7
	300	114	4	4	1250	1100	1800	2200	NF3328X2	3-254	140	190	253	266			156	278	3	3	43.3
	360	82	5	5	964	1135	1800	2200	NU428M	32428H	140		279	196		160	340		4	4	48
	360	82	5	5	964	1135	1800	2200	NJ428M	42428H	140	217	279	196		160	340		4	4	48.7
150	270	45	3	3	419	543	1900	2400	NJ230EM		150	194	233	182		164	256		2.5	2.5	11.7
	270	45	3	3	419	543	1900	2400	NU230EM		150		233	182		164	256		2.5	2.5	11.4
	270	45	3	3	419	543	2090	2640	NU230EQ1/P63S0	3E32230EQT	150		233	182		164	256		2.5	2.5	10.4
	320	65	4	4	720	970	1820	2300	NJ330Q1/P64S0	4E42330EQTY	150	209	270	193		166	304		3	3	25.7
	320	65	4	4	720	970	1820	2300	NU330Q1/P63S0	3E32330EQT	150		270	193		166	304		3	3	26.6
	320	108	4	4	1092	1472	1700	2000	NU 2330EM	32630EH	150		270	193		166	304		3	3	45.7
160	290	48	3	n	493	665	1900	2300	NU 232EQ1/P63S0	3E32232EQT	160		250	195		174	276		2.5	2.5	14.6
	290	48	3	m	443	655	1800	2200	NU232EM		160		250	195		174	276		2.5	2.5	14.7
	290	48	3	3	493	655	1800	2200	NJ 232EM		160	207	250	195		174	276		2.5	2.5	14.9
	290	80	3	3	771	1118	1800	2200	NU 2232EM	32532EH	160		245	193		174	276		2.5	2.5	24.5