Needle Roller Bearing (Na6903 Rna6903)
Needle roller bearing, needle bearing) is the roller bearings with cylindrical roller, relative to its diameter, roller is thin and long.This is called needle roller.Although has a small cross-section, bearing still has high load capacity, needle bearing with fine and long roller (roller diameter D 5 mm or less, acuity 2.5 L/D, L) for the roller length, so the radial structure is compact, its diameter and load capacity at the same time, with other types of bearing outside diameter to a minimum, especially suitable for the limited size of the radial installation supporting structure.
According to the use of different occasions, can be used without inner ring of the bearing or needle roller and cage components, at this time to suit the bearing surface of the surface of the shaft and the shell hole directly as inner and outer rolling bearing surface, in order to ensure the load capacity and operation performance and you have the same ring bearing, axis or shell hole hardness on the surface of the raceway, machining accuracy and surface quality should be as a bearing ring raceway.These bearings can bear radial load only.
| d | D | B |
| d | D | B |
| NA6901 | 12 | 24 | 22 | RNA6901 | 16 | 24 | 22 |
| NA6902 | 15 | 28 | 23 | RNA6902 | 20 | 28 | 23 |
| NA6903 | 17 | 30 | 23 | RNA6903 | 22 | 30 | 23 |
| NA6904 | 20 | 37 | 30 | RNA6904 | 25 | 37 | 30 |
| NA6905 | 25 | 42 | 30 | RNA6905 | 30 | 42 | 30 |
| NA6906 | 30 | 47 | 30 | RNA6906 | 35 | 47 | 30 |
| NA6907 | 35 | 55 | 36 | RNA6907 | 42 | 55 | 26 |
| NA6908 | 40 | 62 | 40 | RNA6908 | 48 | 62 | 40 |
| NA6909 | 45 | 68 | 40 | RNA6909 | 52 | 68 | 40 |
| NA6910 | 50 | 72 | 40 | RNA6910 | 58 | 72 | 40 |
| NA6911 | 55 | 80 | 45 | RNA6911 | 63 | 80 | 45 |
| NA6912 | 60 | 85 | 45 | RNA6912 | 68 | 85 | 45 |
| NA6913 | 65 | 90 | 45 | RNA6913 | 72 | 90 | 45 |
| NA6914 | 70 | 100 | 54 | RNA6914 | 80 | 100 | 54 |
| NA6915 | 75 | 105 | 54 | RNA6915 | 85 | 105 | 54 |
| NA6916 | 80 | 110 | 54 | RNA6916 | 90 | 110 | 54 |
| NA6917 | 85 | 120 | 63 | RNA6917 | 100 | 120 | 63 |
| NA6918 | 90 | 125 | 63 | RNA6918 | 105 | 125 | 63 |
| NA6919 | 95 | 130 | 63 | RNA6919 | 110 | 130 | 63 |
| NA6920 | 100 | 140 | 71 | RNA6920 | 115 | 140 | 71 |
| Brand Name | YCZ or famous brand or according to your requirement |
| Clearance |
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| Tolerance | ABEC1(P0) ABEC3(P6) ABEC5(P5) ABEC7(P4) ABEC9(P2) |
| Vibration |
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| Material | carbon steel, chrome, stainless steel, plastic, ceramic |
| Sample Date | 3-5 days |
| Delivery Detail | 2-15 days after contract |
| Shipping | Express: DHL/EMS/By Sea |
| Advantage | 1).Excellent and high quality control |
| 2).Prompt delivery |
| 3).Competitive price |
| 4).Small order accepted |
| 5).Customers' drawing or samples accepted |
| 6).OEM service |
| Payment Term: | A: 30% T/T In Advance, 70% T/T Against Copy Of B/L |
| B: 100% L/C At Sight |
| Packing: |
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| Industrial package or according to buyers requirement |
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Hebei Yachao Bearing Manufacture Co., Ltd is located in the industrial park of trading business Guantao country in Handan city, this company mainly conducts the manufacturing and import and export of bearings. Covering an area of 12 hectare, this company has 360 staff, among which there are 40 technicians, 20 senior executives. Boasting over 100 sets of full-automatic professional equipment, this company can produce small and medium size bearings by approximately ten million sets with the annual value of production by 120 million RMB. The company has already passed the ISO9001: 2008 international quality management system certification. The "YCZ" brand product produced by this company is rewarded as: "Famous Trademark of Hebei Province", "Famous-brand Products of Hebei Province" and "Quality Goods of Hebei Province".
Its products are widely used on agricultural machinery, agricultural machinery, mining machinery, automobile and electrical machinery, machine tool equipment with marketing network covering all over the country and being exported to Vietnam UAE USA Canada and a lot of western European countries. Over the decade since the establishment of this company, it preserves in " honesty is the basis and operate legally", putting the quality as the priority as always, which makes the brand of "YCZ" be risen rapidly. We look forward to achieve a win-win result with you through our quality products and sincere services.
