Nu318em Nj318e Nup318 NF318 High Rigidity Machine Tool Spindle Cylindrical Roller Bearing

Product Description

Key Features of NU318 NJ318 NUP318 Cylindrical Roller Bearing for Machine Tool Spindle

Key Features
High radial load capacity
Suitable for high-speed spindle operation
Excellent rigidity for machine tool spindles
Multiple structural options (N / NU / NJ / NUP / NF)
Brass cage (EM) for heavy-duty performance
Low friction and high precision
Long service life and reliable operation

Typical Applications
Machine tool spindle systems
Industrial gearboxes and reducers
Electric motors and pumps
Precision mechanical equipment
Heavy industrial machinery

High-Precision Ceramic and Stainless Steel Bearings Manufacturer

The 318EM / 318E Cylindrical Roller Bearing is specially designed for high radial load capacity and high-speed operation, widely used in machine tool spindles, industrial gearboxes, electric motors, and precision mechanical equipment.

With a single-row cylindrical roller design, the bearing provides excellent rigidity, low friction, and stable rotation, making it particularly suitable for machine tool spindle systems and precision transmission equipment.

Available in various structural designs including N, NU, NJ, NUP, and NF, these bearings allow axial displacement or axial positioning, enabling flexible installation in different mechanical systems.

The EM brass cage design improves durability and stability during high-speed operation, while the optimized internal geometry enhances load distribution and extends bearing service life.

Manufactured from high-quality chrome bearing steel with precision machining and advanced heat treatment, ensuring high accuracy, smooth running, and reliable long-term performance.

Bearing Type	Cylindrical Roller Bearing
Structure	Single Row
Cage Type	Brass Cage (EM) / Steel Cage
Material	High Carbon Chrome Bearing Steel
Precision Grade	P0 / P6 / P5
Clearance	C0 / C3 / C4
Lubrication	Grease / Oil
Feature	High Speed / High Rigidity
Application	Machine Tool / Gearbox
OEM / ODM Service	Available
Standard Compliance	ISO standardized dimensions

Bearing Model	Dimensions(mm)			Basic Load Rating(N)		Speed ratings(r/min)		Weight(kg)
	d	D	B	Dyn.C	Stat.Co	Grease	Oil
NU1005	25	47	12	15100	14100	16000	1900	0.092
NU1006	30	55	13	18700	18400	13000	15000	0.120
NU1007	35	62	14	22600	23200	11000	13000	0.180
NU1008	40	68	15	24900	25700	10000	12000	0.220
NU1009	45	75	16	31000	33800	9200	11000	0.290
NU1010	50	80	16	33600	36800	8400	9900	0.310
NU1011	55	90	18	37400	43800	7600	8900	0.450
NU1012	60	95	18	42100	50000	7000	8300	0.480
NU1013	65	100	18	43300	52900	6600	7800	0.510
NU1014	70	110	20	57900	70400	6100	7200	0.700
NU1015	75	115	20	63600	78100	5700	6800	0.740
NU1016	80	125	22	69300	86400	5300	6300	1.000
NU1017	85	130	22	71400	91200	5100	6000	1.040
NU1018	90	140	24	84700	109000	4700	5600	1.340
NU1019	95	145	24	87200	115000	4600	5300	1.400
NU1020	100	150	24	91000	120000	4300	5100	1.460
NU1021	105	160	26	108000	149000	4100	4800	1.850
NU1022	110	170	28	134000	171000	3900	4500	2.310

NU1024	120	180	28	137000	181000	3500	4200	2.470
NU1026	130	200	33	171000	238000	3200	3800	3.770
NU1028	140	210	33	175000	250000	3000	3600	4.000
NU1030	150	225	35	201000	281000	2800	3300	4.830
NU1032	160	240	38	236000	330000	2600	3000	5.930
NU1034	170	260	42	276000	400000	2400	2800	7.900
NU1036	180	280	46	356000	503000	2200	2600	10.500
NU1038	190	290	46	366000	530000	2100	2500	10.900
NU1040	200	310	51	388000	582000	1900	2300	14.100
NU1044	220	340	56	507000	748000	1700	2000	18.500
NU202	15	35	11	12700	10400	19000	22000	0.050
NU203	17	40	12	17600	14600	17000	20000	0.070
NU204	20	47	14	25700	22600	15000	18000	0.110
NU205	25	52	15	29300	27700	13000	15000	0.140
NU206	30	62	16	39100	37400	11000	13000	0.210
NU207	35	72	17	50200	50200	9300	11000	0.310
NU208	40	80	18	55700	55400	8300	9900	0.380
NU209	45	85	19	63100	66400	7600	9200	0.440
NU210	50	90	20	66100	71900	7100	8500	0.500
NU211	55	100	21	86400	98700	6400	7700	0.650

NU212	60	110	22	97700	107000	5800	6900	0.830
NU213	65	120	23	108000	119000	5300	6400	1.050
NU214	70	125	24	119000	137000	5000	6000	1.160
NU215	75	130	25	130000	156000	4800	5700	1.290
NU216	80	140	26	139000	167000	4400	5300	1.560
NU217	85	150	28	167000	199000	4200	5000	1.940
NU218	90	160	30	182000	217000	3900	4700	2.380
NU219	95	170	32	221000	265000	3700	4400	2.920
NU220	100	180	34	250000	306000	3500	4200	3.520
NU2203	17	40	16	24000	22000	16000	18500	0.090
NU2204	20	47	18	30600	28300	13000	18000	0.150
NU2205	25	52	18	34900	34600	12000	15000	0.170
NU2206	30	62	20	48900	49800	9700	13000	0.260
NU2207	35	72	23	61600	65300	8300	11000	0.400
NU2208	40	80	23	72300	77600	7400	9900	0.490
NU2209	45	85	23	76100	84600	6900	9200	0.540
NU221	105	190	36	201000	241000	3300	3900	4.000
NU2210	50	90	23	79700	91500	6400	8500	0.580
NU2211	55	100	25	101000	122000	5800	7700	0.810
NU2212	60	110	28	131000	157000	5200	6900	1.100

NU2213	65	120	31	149000	181000	4800	6400	1.450
NU2214	70	125	31	156000	194000	4500	6000	1.530
NU2215	75	130	31	162000	207000	4300	5700	1.610
NU2216	80	140	33	186000	243000	4000	5300	2.030
NU2217	85	150	36	218000	279000	3700	5000	2.530
NU2218	90	160	40	242000	314000	3500	4700	3.210
NU2219	95	170	43	287000	371000	3300	4400	3.930
NU222	110	200	38	293000	365000	3100	3700	4.900
NU2220	100	180	46	334000	444000	3100	4200	4.820
NU2222	110	200	53	384000	517000	2800	3700	6.930
NU2224	120	215	58	452000	619000	2600	3400	8.560
NU2226	130	230	64	530000	737000	2400	3200	11.200
NU2228	140	250	68	572000	835000	2200	2900	14.300
NU2230	150	270	73	662000	982000	2000	2600	18.700
NU2232	160	290	80	809000	1190000	1800	2400	26.600
NU2234	170	310	86	967000	1410000	1700	2200	29.200
NU2236	180	320	86	1010000	1510000	1600	2100	30.400
NU2238	190	340	92	1100000	1670000	1500	2000	37.000
NU224	120	215	40	336000	421000	2800	3400	5.850
NU2240	200	360	98	1220000	1870000	1400	1900	44.400

Specification

Applications
Aerospace: High-performance bearings for aircraft engines and systems.
Automotive: Durable solutions for engines, transmissions, and electric vehicles.
Medical Equipment: Precision bearings for surgical tools and diagnostic devices.
Industrial Machinery: Robust bearings for heavy-duty operations in manufacturing and production.
Renewable Energy: Specialized bearings for wind turbines and solar tracking systems.
Food & Beverage: Corrosion-resistant bearings for hygienic and reliable operations.
 
Key Configurations
Ceramic Bearings: Offering high temperature resistance, low friction, and excellent corrosion resistance.
Custom Designs: Tailored bearing solutions to meet specific application requirements.
High-Precision Tolerances: Ensuring consistent performance in demanding applications.
Maintenance-Free Options: Sealed bearings for enhanced durability and reduced downtime.

Production Process

1) Premium-grade ceramic and stainless steel materials are sourced to meet stringent quality standards.
2) Advanced CNC and grinding machines shape the bearing components to achieve tight tolerances and smooth finishes.
3) Precision polishing ensures low friction and optimal performance for both ceramic and stainless steel bearings.
4)Bearings are carefully assembled in a clean, controlled environment to maintain integrity and precision.
5) Rigorous quality checks, including dimensional accuracy, surface finish, and load testing, are performed to ensure every bearing meets or exceeds industry standards.

Ceramic bearing

Stainless steel bearing

Hybrid ceramic bearing

Many years of experience in bearing business

After Sales Service

Technical Support: Expert guidance for installation, maintenance, and troubleshooting to ensure optimal performance.
Warranty Assurance: Coverage for manufacturing defects, providing peace of mind with every purchase.
Customized Solutions: Tailored advice and modifications to address specific operational challenges or requirements.
Prompt Response: Dedicated support team available to address inquiries and resolve issues quickly and effectively.

Company Profile

At LOWIFAR Bearings, we specialize in designing and manufacturing a wide range of precision, high-quality ball bearings and tapered roller bearings. Our products are designed to meet the demands of heavy agricultural machinery, textile machinery, various engineering applications, motors, automobiles, computers, electric appliances, power tools, pumps, and more.

With over ten years of experience in bearing production, LOWIFAR is a trusted manufacturer dedicated to providing custom-made bearing solutions to meet your unique requirements.

Our experienced and professional team ensures that we deliver products of the highest quality. We are proud to have exported our bearings to numerous countries and regions worldwide, including Europe, North America, India, Thailand, South Korea, Mexico, Turkey, Argentina, Russia, and many others.

Our bearings have earned a strong reputation for reliability and performance among our global customer base. We invite customers, business partners, and friends from all over the world to connect with us for mutually beneficial cooperation.

FAQ

1. What are ceramic bearings?
Ceramic bearings are bearings made from advanced ceramic materials such as Zirconia (ZrO2) or Silicon Nitride (Si3N4). They are known for their high strength, wear resistance, and ability to perform in extreme conditions.

2. What are the advantages of ceramic bearings over steel bearings?
Ceramic bearings offer several advantages, including:

  Higher Durability: Resistant to wear, corrosion, and high temperatures.
  Lighter Weight: Up to 40% lighter than steel bearings.
  Non-Magnetic & Electrically Insulating: Ideal for sensitive applications.
  Low Friction: Reduces energy loss and heat generation.
3. In which industries are ceramic bearings commonly used?
Ceramic bearings are widely used in:

  Packaging equipment
  Renewable energy (e.g., wind turbines)
  Aerospace and automotive
  Medical devices
  Chemical processing
  High-precision tools
4. Can ceramic bearings handle high temperatures?
Yes, ceramic bearings are highly resistant to heat and can operate in temperatures exceeding 1,000°C, depending on the material used.

5. Are ceramic bearings suitable for corrosive environments?
Absolutely! Ceramic bearings are non-reactive to most chemicals, making them ideal for use in highly corrosive environments.

6. What is the lifespan of ceramic bearings?
Ceramic bearings typically last much longer than steel bearings due to their wear resistance and durability. However, the exact lifespan depends on the operating conditions and maintenance practices.

7. How do I maintain ceramic bearings?
Ceramic bearings require minimal maintenance, but to ensure longevity:

  Use the correct lubrication when necessary.
  Keep them clean and free from contaminants.
  Follow proper installation procedures.
8. Do you provide customized ceramic bearings?
Yes, we offer tailored ceramic bearing solutions to meet your specific application requirements. Contact us to discuss your needs.

9. What sizes and types of ceramic bearings do you offer?
We supply a wide range of sizes and configurations, including ball bearings, roller bearings, and hybrid bearings. Check our product catalog or contact us for more details

10. How can I place an order or request a quote?
Simply visit our Contact Us page, fill out the inquiry form, or reach out to us directly via email or phone. Our team will respond promptly with the information you need