Japan Imported Original IKO Bearing Na4900 Na4901 Na4902 Na4903 Na4904 Needle Roller Bearing for Compressor Gearbox

Product Description

Product Description

A needle roller bearing is a type of roller bearing that features cylindrical rollers. Compared to its diameter, the rollers are both thin and long. These rollers are called needle rollers. Despite having a smaller cross-section, the bearing still has a high load-bearing capacity. The needle bearing is equipped with thin and long rollers (roller diameter D ≤ 5mm, L/D ≥ 2.5, where L is the roller length), so it has a compact radial structure. When the inner diameter size and load capacity are the same as those of other types of bearings, its outer diameter is the smallest. It is particularly suitable for supporting structures where the radial installation size is limited. 

Depending on the application scenario, either bearings without inner rings or needle rollers and cage assemblies can be selected. In this case, the shaft neck surface and the outer shell hole surface that mate with the bearing directly serve as the inner and outer rolling surfaces of the bearing. To ensure that the load-bearing capacity and operational performance are the same as those of bearings with rings, the hardness, machining accuracy and surface quality of the rolling surfaces of the shaft or shell hole should be similar to those of the bearing rings. This type of bearing can only withstand radial loads.

Specification

Product	Needle Roller Bearing
Type	NA Series/RNA Series/NK Series/NKI Series/NKS Series
Place of Origin	China,shandong
Structure	Needle Bearing
Brand	OEM ODM
Material	Gcr15 steel;Bearing steel
Size	Standard size, customizable
Delivery time	7-30 days depends on quantity needed
Service	OEM service, according to customer requirements
Quality	Large bearing capacity, fine mass.

Other Models

HK needle roller bearing
New model	Dimensions(mm)			Weight(kg)	d(mm)	D(mm)	B(mm)
	Bore  diameter	Outside diameter	Width		17	40	12
HK2010	20	26	20	0.011	20	47	14
HK2012	20	26	12	0.013	25	52	15
HK2016	20	26	16	0.019	30	62	16
HK2020	20	26	20	0.023	35	72	17
HK2030	20	26	30	0.035	40	80	18
HK2210	22	28	10	0.012	45	85	19
HK2212	22	28	12	0.014	50	90	20
HK2216	22	28	16	0.0198	55	100	21
HK2220	22	28	20	0.0033	60	110	22
HK2512	25	32	12	0.0034	65	120	23
HK2516	25	32	16	0.0048	70	125	24
HK2520	25	32	20	0.0045	75	130	25
HK2526	25	32	26	0.0057	80	140	26
HK2538	25	32	38	0.009	10	35	11
HK2816	28	35	16	0.0103	12	37	12
HK2820	28	35	20	0.01	15	42	13
HK3012	30	37	12	0.0102	17	47	14

Bearing No.	Boundary dimensions(mm)			Basic load ratings(N)		Limiting speeds(rpm)	Mass(g)
	Fw	D	C	Cr	Cor	Oil
NAV4002	15	32	17	10800	29800	4500	76
NAV4003	17	35	18	1700	37900	4300	94
NAV4004	20	42	22	28150	60900	3900	170
NAV4005	25	47	22	33800	70800	3700	195
NAV4006	30	55	25	49900	96500	3500	299
NAV4007	35	62	27	47600	122800	3100	402
NAV4008	40	68	28	49900	137900	2700	482
NAV4009	45	75	30	52500	153500	2600	617
NAV4010	50	80	30	55700	166000	2500	669
NAV4011	55	90	35	68500	225800	2300	1030
NAV4012	60	95	35	75400	239000	2100	1087
NAV4013	65	100	35	79500	256900	1900	1156
NAV4014	70	110	40	98800	354900	1700	1666
NAV4015	75	115	45	101800	372900	1600	1762
NAV4016	80	125	45	102900	373500	1500	2450
NAV4017	85	130	45	103800	374800	1400	2500

Shaft	Bearing No.	Boundary Dimensions(mm)			Basic Load Rating(N)		Limiting Speed
		Fw	Ew	Bc	Cr	Cor	Oil(RPM)
3	K3X5X7TN	3	5	7	1540	1290	50000
	K3X5X9TN	3	5	9	1710	1480	48000
	K3X6X7TN	3	6	7	1430	970	47000
4	K4X7X7TN	4	7	7	2330	1840	43000
	K4X7X10TN	4	7	10	2350	1920	39000
5	K5X8X8TN	5	8	8	2300	1880	37000
	K5X8X10TN	5	8	10	2800	2450	37000
6	K6X9X8TN	6	9	8	2500	2240	35000
	K6X9X10TN	6	9	10	3300	3100	35000
	K6X10X13TN	6	10	13	3500	2800	33000
7	K7X10X8TN	7	10	8	2750	2550	32000
	K7X10X10TN	7	10	10	3350	3400	32000
8	K8X11X8TN	8	11	8	3000	2900	30000
	K8X11X10TN	8	11	10	3830	3950	30000
	K8X11X13TN	8	11	13	5000	5700	30000
	K8X12X10TN	8	12	10	4900	4600	30000
9	K9X12X10TN	9	12	10	4200	4700	30000
	K9X12X13TN	9	12	13	5500	6700	30000

K10X13X10TN	10	13	10	4500	5250	27000
K10X13X13TN	10	13	13	6000	7600	27000
K10X13X16TN	10	13	16	6300	7800	27000
K10X14X10TN	10	14	10	7000	7900	27000
K10X14X13TN	10	14	13	8000	9100	26000
K10X16X12TN	10	16	12	7000	9300	27000
12	K12X15X9TN	12	15	9	4120	5210	25000
	K12X15X10TN	12	15	10	4320	5730	25000
	K12X15X13TN	12	15	13	6000	8100	25000
	K12X16X8TN	12	16	8	1200	4700	25000
	K12X16X10TN	12	16	10	6000	6900	25000
	K12X16X13TN	12	16	13	7900	9200	25000
	K12X17X13TN	12	17	13	9300	10000	24000
	K12X18X12TN	12	18	12	9800	8000	24000
	K12X15X20TN	12	15	20	8200	12000	25000
14	K14X17X10	14	17	10	5100	6800	23000
	K14X17X17	14	17	17	9300	14000	23000
	K14X18X10	14	18	10	6800	8300	23000
	K14X18X13	14	18	13	8100	9800	23000
	K14X18X14	14	18	14	9200	12000	23000

Company Profile

X&S bearing is a professional bearing supplier integrating production, manufacturing and trade. Our main bearing products include deep groove ball bearings, tapered roller bearings, cylindrical roller bearings, spherical ball bearings, spherical roller bearings, single row angular contact bearings, double row angular contact bearings, needle roller bearings, thrust ball bearings, spherical plain bearings, spherical bearings, automotive bearings, pump bearings, and many non-standard bearings are also within our product range.

The company has a professional product design and development system and the ability to conduct research and development simultaneously for customer projects. Our bearings are widely used in automotive transmissions, engines, powertrain systems such as transmissions, electric drive systems of new energy vehicles, steering systems, braking systems, drive shaft systems, air conditioning compressors and other automotive fields. Supporting industries: construction machinery, reducers, power tools, household appliances, etc.

Why choose us

1. Quality Control To ensure the quality of our vehicles and other products, Our QC staffs do strict supplier evaluations, in-coming inspections, in-process inspections, final inspections and pre-delivery inspections. The most important is that we listen to what our customers say and are always looking for ways to improve the quality of our products through continuous improvement.

 2. OEM Ability We have built stable and long-term cooperate relationshilp with supermarkets,we canalso provide ODM, OEM and Agent services to our customers over the world.

 3. Parts Available We have spare bearings for immediate delivery to anywhere in the world. Our Bearings widely used in the fields of motor, fan, injection molding machine, mining, mechanical equipment, metallurgy, rolling, automobile, railway, iron and steel, power, textile, packaging, petroleum, paper making, etc

 4. Good Warranty We take customer satisfaction and product quality as the first priority for us. We supply reliable warranties and good after-sales services.

Certifications

Packing & Delivery

1. Industrial Packing ( Plastic Tube Packing; Paper Rolling Packing etc.) 

2. Single Box Packing ( White Box Paking; Color Box Packing ) 

3. Carton Box + Pallet

FAQ

1.Q: Are you trading company or manufacturer ?
A: We are a bearing manufacturer. Our factory is located in Liaocheng City. Welcome to visit our factory.
 
2.Q: How to get a quotation ?
A: Please send inquiry through made-in-china.com directly. Our salesman will provide you an accurate and professional offer according to your requirements.
 
3.Q:Do you offer free samples? 
A: Yes, we offer free samples to distributors and wholesalers, however customers should bear freight. 
 
4.Q: What's the MOQ ?
A: MOQ is 10pcs for standardized products; for customized products, MOQ should be negotiated in advance. There is no MOQ for sample orders.
 
5.Q:How long is the lead time?
A: The lead time for sample orders is 3-7 days, for bulk orders is 7-25 days.
 
6.Q: Do you accept ODM&OEM orders? 
A: Yes, we provide ODM&OEM services to worldwide customers, we are able to customize housings in different styles, and sizes in different brands, we also customize bearing & packaging box as per your requirements.
 
7.Q: How to control bearing quality?
A: We have perfect quality control systems and testing equipments and experienced engineers for more than 10 years.We test bearings one by one assuring all bearings with high performance.
 
8.Q: What's your after-sales service and warranty? 
A: We promise to bear the following responsibility when defective product is found: 
1)12 months warranty from the first day of receiving goods; 
2) Replacements would be sent with goods of your next order; 
3) Refund for defective products if customers require
 
9.Q: What is the best way to maintain my bearings? 
A: 1) Soak your bearings in mineral spirits or paint thinner to remove any grease or particulates. 
2) Blow bearing out with compressed air. 
3) Place a light drop of oil on the bearing. 
4) Give the bearing a spin.

KINDLY REMIND: 
In order to guarantee the bearing working life,please carefully install and maintenance. 
1.open the package only before install to protect the bearing from rust. 
2.must guarantee the working area of bearing is very clean. 
3.strictly follow the carry capacity,temperature,working time of bearing. 
Any other questions or any products you are interested, please contact us freely!