/ Single row cylindrical roller bearings

nu312 bearing

1.Product Introduction: Model NU312, with an inner diameter of 60mm, separable inner ring, suitable for medium-sized and medium-speed equipment.
2.Structure Type: The outer ring has double ribs, the inner ring is separable, with a single row of rollers + cage, and it is open - type.
3.Size Range: Inner diameter 60mm, outer diameter 130mm, width 31mm.
4.Material: Inner ring / outer ring / rollers: GCr15/GCR15SIMN/20Cr2Ni4A, cage: stamped steel / brass.
5.Precision: P0 level, precision version is P6/P5 level.
6.Application Fields: Medium-sized electric motors, reducers, machine tool spindles (non-positioning end), automobile transmission systems.
7.Key Inspection Items: Radial clearance (0.015 - 0.04mm), dimensional accuracy, roller integrity.

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Product Description

Data Sheet

NU312 Bearing: High-Performance Cylindrical Roller Bearing for Industrial Excellence

Optimized for Heavy Loads & Harsh Environments

The NU312 cylindrical roller bearing is engineered to deliver unmatched durability in demanding industrial applications. With an inner diameter of 60mm, outer diameter of 130mm, and width of 31mm, this separable inner ring bearing excels in medium-sized equipment like motors, reducers, and automotive systems. At LUOYANG INNO BEARING, we combine 30+ years of manufacturing expertise with advanced heat treatment and precision grinding to ensure your NU312 bearings withstand extreme temperatures (-30°C to 150°C), shock loads, and contamination-prone environments.

Key Specs: Dynamic Load 123 kN | Static Load 89 kN | P0-P5 Precision | Material: GCr15 Steel

product-750-750

Technical Specifications & Features

Precision-Built for Reliability

Dimensions: 60mm (ID) x 130mm (OD) x 31mm (Width)
Material: Inner/outer rings & rollers: High-purity GCr15 steel; Cage options: Stamped steel or brass.
Precision: Standard P0 grade; available in P6/P5 for high-speed applications.
Radial Clearance: 0.015–0.04mm (customizable upon request).

Customization Options

Seals: Add rubber or hybrid ceramic seals for IP66/69K dust/moisture resistance.
Cages: Upgrade to brass for higher rigidity in mining or agriculture.
Coatings: Zinc-nickel plating for corrosive environments (e.g., coastal wind turbines).

Why Choose Us?

1. 30+ Years of Industrial Expertise

Our in-house R&D team tailors products for sector-specific challenges:

Mining: ATEX-compliant variants with 15% higher shock load tolerance.
Wind Energy: GL Wind-certified units with 50,000+ hour L10 lifespan under 20% overload.
Agriculture: NSF H1 grease-packed bearings for harvesters in dusty conditions.

2. Rigorous Quality Assurance

Every NU312 bearing undergoes:

Material purity checks (99.95% steel)
3-stage inspection (dimensional accuracy, vibration testing, 72-hour endurance runs)
100% defect-free certification

3. Fast Global Delivery

Standard NU312: Shipped within 48 hours from EU/NA/Asia warehouses.
Customized Orders: 30% faster turnaround vs. industry average (e.g., modified seals in 7 days).

Application Scenarios

Where products Excel

Mining Equipment: Conveyor pulleys & crushers requiring IP69K sealing.
Wind Turbines: Main shaft assemblies with GL Wind compliance.
Agricultural Machinery: Harvesters needing NSF H1 grease compatibility.
Port Cranes: Heavy-load trolley systems (up to 123 kN dynamic load).

Certifications & Compliance

Our products meet:

ISO 9001 (Quality Management)
ISO 14001 (Environmental Standards)
CE, ATEX, and AGMA certifications

FAQs

1. Can the product handle high-temperature environments?

Yes! Advanced heat treatment ensures stable performance from -30°C to 150°C.

2. Do you provide products with custom dimensions?

Absolutely. We modify inner/outer diameters and widths within 72 hours for urgent retrofits.

3. How do you guarantee 48-hour delivery?

We stock 1,000+ standard NU312 units globally and partner with DHL/FedEx for priority shipping.

4. What technical support do you offer?

Our engineers provide IoT integration guidance, predictive maintenance plans, and 24/7 troubleshooting.

Why Partner With Us?

End-to-End Solutions: From bearing selection to legacy equipment upgrades.
Volume Discounts: Competitive pricing for 5K+ unit orders.
Lifetime Support: Real-time performance monitoring via our IoT platform.

Contact Us

Ready to Upgrade Your Equipment with NU312 Bearing?

📧 Email our engineering team at sales@inno-bearing.com for a customized NU312 quote or technical consultation.

LUOYANG INNO BEARING CO., LTD – Powering Industries Since 1993

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