Needle Roller Bearings Na4914 Na4915 Na4916 Na4917 Na4918 Na4919 Na4920 Na4922 Na4924 Na49/22 Na49/28 Rna499A Rna4900A in Australia/New Zealand/USA/Europe/Japan

China Needle Roller Bearings Na4914 Na4915 Na4916 Na4917 Na4918 Na4919 Na4920 Na4922 Na4924 Na49/22 Na49/28 Rna499A Rna4900A in Australia/New Zealand/USA/Europe/Japan, Find details about China Independent Needle Roller Bearing, Solid Needle Roller Bearing from Needle Roller Bearings Na4914 Na4915 Na4916 Na4917 Na4918 Na4919 Na4920 Na4922 Na4924 Na49/22 Na49/28 Rna499A Rna4900A in Australia/New Zealand/USA/Europe/Japan

Basic Info.

Model NO.

RNA4900AX2A RNA4901A RNA4902A

Separated

Unseparated

Name

Needle Roller Bearings

Precision

Clearance

Vibration

Zv3

Service

OEM, ODM

Sealing

Rubber Sealed

Lubrication

Oil, Grease

Application

Automobile, Agricultural Machine, Gearbox, Reducer

Trademark

Bentu

Transport Package

Industrial/Box+Carton+Pallet

Specification

Without Inner Ring

Origin

Shandong, China

HS Code

848220

Model NO.

RNA4900AX2A RNA4901A RNA4902A

Separated

Unseparated

Name

Needle Roller Bearings

Precision

Clearance

Vibration

Zv3

Service

OEM, ODM

Sealing

Rubber Sealed

Lubrication

Oil, Grease

Application

Automobile, Agricultural Machine, Gearbox, Reducer

Trademark

Bentu

Transport Package

Industrial/Box+Carton+Pallet

Specification

Without Inner Ring

Origin

Shandong, China

HS Code

848220

Product Desciption

Needle Roller Bearings NA4914 NA4915 NA4916 NA4917 NA4918 NA4919 NA4920 NA4922 NA4924 NA49/22 NA49/28 RNA499A RNA4900A in Australia/New Zealand/USA/Europe/Japan

Reasons to choose Guomai Bearings as your independent needle roller/rolling bearings partner

1. Bearing designing: Guomai has our own bearing R&D team and adopts Germany technology. This enables us to provide OEM and ODM service to you.
2. Production process: We strictly follow the 5S production process and acquired ISO9001:2008 quality management system certificate. Besides, we introduced from abroad world famous brands lathes and heat treatment equipment, this enables us to provide high precision bearings with similar quality to world famous brands such as SKF, ,TIMKEN,NSK,NTN,KOYO,NACHI and so on.
3. Materials: To ensure the high quality of bearings, we use high carbon chrome bearing steel which provides high rigidity, and high resistance to abrasive wear to produce the bearings. Low carbon cold rolled steel and low carbon stainless steel is also used according to customers' requirements.
4. Quality inspection: All bearings will be strictly tested before packing. We have Taylor talysurf, hardness meter,clearance detector,vibration(speed) measuring instrument,roundness instrument to guarantee all bearings are qualified with the standards.
5. Lubricants: Suitable lubricants are used to protect the bearings from oxidation or corrosion of parts thus enable our bearings with longer lifetime, low noise and better high temperature performance. Selection of lubricants is generally governed by the bearing application. Right choice of high quality lubricants could prevent metal to metal contact and conduct heat away from the bearings.
6. Packing: Guomai bearings pay attention to every detail in the bearing production process. We adopt plastic bag, Kraft paper, thick paper box and cartons to protect the bearings from unexpectable damage during the transportation and warehouse stock.
7. Factory direct marketing: We are the factory and not the distributor or trading agent, so we could provide the same quality with competitive price.

What is Needle Roller Bearing?

A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers looking like sewing needles. Rollers of ordinary roller bearings are only slightly longer than their diameter, but needle rollers are at least four times longer than their diameter. Like all the other bearings, they are used to reduce the friction of rotating surface.

Compared to ball bearings and other conventional roller bearings, needle bearings have a larger surface area in contact with the raceways, so they can support a greater radial load but not axial load. They are also thinner, so they require less clearance between the axle and the surrounding structure.

Needle bearings are widely used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes.

Diverse types of needle bearings are available in a wide variety of sizes and tolerances, for a multitude of applications such as gearboxes, automotive power transmission systems, two and four stroke engines, planetary gear sets and air compressors.

Needle roller and cage assemblies are offered in single or double row, solid or split cage, metric and inch sizes. Single and double row bearings are available with or without ribs, and with or without inner rings.

Needle roller/rolling bearings specifications

Shaft Diameter	Bearing Designation and Mass Approx						Boudary Dimensions			Basic Load Rating		Limiting Speed
Shaft Diameter	Open			Closed			FW	D	C	Cr Dynamic	Cor Static	Oil
mm	Current	Original	Mass(g)	Current	Original	Mass(g)	mm			N		rpm
4	HK0408TN	37941/4	1.6	BK0408TN	35941/4	1.8	4	8	8	1540	1070	40000
5	HK0509	47941/5	2	BK0509	45941/5	2.1	5	9	9	2200	1790	36000
6	HK0607	27941/6	1.8	-	-	-	6	10	7	1600	1400	30000
	HK0608	37941/6	2.1	BK0608	35941/6	2.2	6	10	8	1830	1550	32000
	HK0609	47941/6	2.2	BK0609	45941/6	2.6	6	10	98	2650	2400	30000
	HK06×12×08		2.5	-	-	-	6	12	8	2230	2010	33000
7	HK0709	47941/7	2.3	BK0709	45941/7	2.9	7	11	9	2800	2150	27000
8	HK0808	37941/8	2.7	BK0808	35941/8	3	8	12	8	2550	2400	21000
	HK0810	57941/8	3	BK0810	55941/8	3.4	8	12	10	3700	3450	21000
	HK08×14×10	27942/8	5.35	BK08×14×10	25941/8	5.8	8	14	10	3800	3950	25000
	HK08×14×12	37942/8	6.6	-	-	-	8	14	12	4100	4320	25000
9	HK0908	37941/9	3	BK0908	35941/9	3.4	9	13	8	3650	4050	25000
	HK0910	57941/9	4	BK0910	55941/9	4.3	9	13	10	4050	4250	25000
	HK0912	67941/9	4.6	BK0912	65941/9	4.9	9	13	12	5000	6000	25000
	HK09×15×10	27942/9	5.6	-	-	-	9	15	10	5300	6300	25000
10	HK1010	57941/10	4.1	BK1010	55941/10	4.3	10	14	10	3900	4800	19000
	HK1012	67941/10	4.8	BK1012	65941/10	5	10	14	12	5000	6300	19000
	HK1015	-	6	BK1015	-	6.2	10	14	15	6700	7800	19000
12	HK1208	37941/12	3.3	-	-	-	12	16	8	7200	8000	19000
	HK1210	57941/12	4.6	BK1210	55941/12	5.2	12	16	10	4150	5800	19000
	HK1212	67941/12	5.6	BK1212	65941/12	6.2	12	16	12	3800	5100	15000
13	HK1312	-	8.9	BK1312	-	11.2	13	19	12	6200	7100	17000
14	HK1410	27941/14	8.3	BK1412	35941/14	12.1	14	20	10	6700	7000	16000
	HK1412	37941/14	10.5	-	-	12.2	14	20	12	6800	7500	16000
	HK1416	57941/14	13.9	-	-	12.5	14	20	16	7300	9000	14000
15	HK15×20×12	7941/15	8.4	-	-	-	15	20	12	5800	6000	14000
	HK15×20×16	7942/15	11.4	-	-	-	15	20	16	6000	6200	14000
	HK15×20×20	7943/15	13.8	-	-	-	15	20	20	6100	6400	14000
	HK1512	37941/15	11.1	BK1512	35941/15	12.7	15	21	12	7000	8400	14000
	HK1514	47941/15	12.7	-	-	12.9	15	21	14	8500	10400	13000
	HK1515	-	14.2	-	-	13	15	21	15	9100	11400	13000
	HK1516	57941/15	15	BK1516	55941/15	16.5	15	21	16	9800	11400	14000
	HK1522	SZ-439	20.4	BK1522	-	22	15	21	22	10400	16500	14000
	HK15×22×12	7948/15	12.5	-	-	-	15	22	12	14300	18400	13000
16	HK16×21×09	-	7.5	-	-	-	16	21	9	4400	5600	12000
	HK1612	37941/16	11.7	BK1612	35941/16	13.8	16	22	12	7100	9200	14000
	HK1614	47941/16	14.4	-	-	-	16	22	14	8800	9900	12000
	HK1616	57941/16	15.8	BK1616	55941/16	17.6	16	22	16	10100	14300	14000
	HK1617	SZ-435	18	-	-	-	16	22	17	12900	17200	12000
	HK1622	87941/16	21.7	BK1622	85941/16	23.4	16	22	22	11100	17400	14000
17	HK1712	37941/17	12.2	BK1712	35941/17	14.5	17	23	12	6900	9300	13000
	HK1714	7941/17	14	-	-	-	17	23	14	6800	10200	10000
	HK1716	57941/17	15.9	-	-	-	17	23	16	8500	12500	10000
	HK1718	7942/17	19	-	-	-	17	23	18	9500	10600	10000
18	HK1812	37941/18	13.1	BK1812	35941/18	14.9	18	24	12	7100	9900	12000
18	HK1816	57941/18	17.5	BK1816	55941/18	19.9	18	24	16	10600	15300	12000
19	HK19×27×16	TA1916	23	-	-	-	19	27	16	8100	9500	10500

RNA4905 Details

Guomai's Main Featured Bearing

About Guomai Bearing Factory

Shandong Guomai Bearing Co.,Ltd(hereinafter referred to as Guomai) was established in 1999, with more than 20 years of bearing research and manufacturing experience. The factory covers an area of 16000 square meters,7000 of which is manufacturing area and the other is office and warehouse. Guomai has large stock for normally used bearing models and this enables us to deliver the bearing to customers within the shortest time.

There are total 160 staffs, 6 automatic bearing assembly lines,116 CNC machines and 22 sets of precise inspection instruments. We not only have our own R&D team but also cooperate with Henan University of Science and Technology, Luoyang Bearing Research Institute to develop new bearing designing and manufacturing technology.

In addition to conventional bearings, Guomai also provides OEM and ODM service to our respectable customers to meet their individual requirements.We introduced advanced milling, turning machines, heat treatment equipment and bearing testing machines to guarantee the quality of the bearings because we know "Quality is the life of Guomai" .Now our top products include taper roller bearing, angular contact ball bearing, deep groove bearing ,spherical bearing and cylindrical roller bearing with P5, P4 accuracy grade.

After so many years of developing, Guomai has built up an excellent sales network within China. Our two bearing brands "CVZ" and "Bentu" are well known and have high reputation within the industrial equipment and components field. Moreover, with confidence of our bearing quality, we started to export our bearings 4 years ago. Customers from Europe, North America, Middle East, Southeast Asia and Africa have enjoyed the happiness our bearings brought to them.

Guomai Bearing always upholds "WIN-WIN" spirit and believes in "Details determine success" philosophy, and keep improving bearing quality in the past 20 years. Some series of our bearings have similar quality with SKF, NSK, Timken, NACHI, KOYO, NTN and other world famous brands but with lower price.

Looking to the future, Guomai will insist on the technology innovation and processing levels to provide the most appropriate bearing products and service to our customers.