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Needle Roller Bearing (Na4912 Rna4912 Nav4912)
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.
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 | ||
NA4900 | 10 | 22 | 13 | RNA4900 | 14 | 22 | 13 |
NA4901 | 12 | 24 | 13 | RNA4901 | 16 | 24 | 13 |
NA4902 | 15 | 28 | 13 | RNA4902 | 20 | 28 | 13 |
NA4903 | 17 | 30 | 13 | RNA4903 | 22 | 30 | 13 |
NA4904 | 20 | 37 | 17 | RNA4904 | 25 | 37 | 17 |
NA4905 | 25 | 42 | 17 | RNA4905 | 30 | 42 | 17 |
NA4906 | 30 | 47 | 17 | RNA4906 | 35 | 47 | 17 |
NA4907 | 35 | 55 | 20 | RNA4907 | 42 | 55 | 20 |
NA4908 | 40 | 62 | 22 | RNA4908 | 48 | 62 | 22 |
NA4909 | 45 | 68 | 22 | RNA4909 | 52 | 68 | 22 |
NA4910 | 50 | 72 | 22 | RNA4910 | 58 | 72 | 22 |
NA4911 | 55 | 80 | 25 | RNA4911 | 63 | 80 | 25 |
NA4912 | 60 | 85 | 25 | RNA4912 | 68 | 85 | 25 |
NA4913 | 65 | 90 | 25 | RNA4913 | 72 | 90 | 25 |
NA4914 | 70 | 100 | 30 | RNA4914 | 80 | 100 | 30 |
NA4915 | 75 | 105 | 30 | RNA4915 | 85 | 105 | 30 |
NA4916 | 50 | 110 | 30 | RNA4916 | 90 | 110 | 30 |
NA4917 | 85 | 120 | 35 | RNA4917 | 100 | 120 | 35 |
NA4918 | 90 | 125 | 35 | RNA4918 | 105 | 125 | 35 |
NA4919 | 95 | 130 | 35 | RNA4919 | 110 | 130 | 35 |
NA4920 | 100 | 140 | 40 | RNA4920 | 115 | 140 | 40 |
NA4922 | 110 | 150 | 40 | RNA4922 | 125 | 150 | 40 |
NA4924 | 120 | 165 | 45 | RNA4924 | 135 | 165 | 45 |
NA4926 | 130 | 180 | 50 | RNA4926 | 150 | 180 | 50 |
NA4928 | 140 | 190 | 50 | RNA4928 | 160 | 190 | 50 |
Brand Name | YCZ or famous brand or according to your requirement |
Clearance | |
Tolerance | ABEC1(P0) ABEC3(P6) ABEC5(P5) ABEC7(P4) ABEC9(P2) |
Vibration | |
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: | |
Industrial package or according to buyers requirement | |