OTOTRI High Precision Machined Needle Roller Bearing NA55*80*18 with Inner Ring
Product Description
Needle roller bearings are roller bearings with small diameter cylindrical rollers. Despite their small cross-section, needle roller bearings have a high load-carrying capacity and are therefore ideally suited for bearing arrangements where radial space is limited.
Radial needle roller bearings are cylindrical and use rollers parallel to the shaft. Thrust needle roller bearings are flat and use a radial pattern of needle rollers.
Full complement bearings have solid inner and outer rings and rib-guided cylindrical rollers. Since these bearings have as many rolling elements as possible, they have an extremely high radial load capacity and are suitable for particularly compact designs.
Needle roller bearings are used extensively in engine components such as rocker arm pivots, pumps, compressors and transmissions. Driveshafts on rear-wheel drive vehicles usually have at least 8 needle bearings (4 per U-joint), often more if they are particularly long or run on steep slopes.
NA49 series, NA69 series, NA48 series
| dimensions | Basic load | ratings | Speed | Mass | Designations |
| 14 | 22 | 13 | 8.8 | 10.4 | 24000 | 0.017 | RNA 4900 |
| 16 | 24 | 13 | 9.9 | 12.2 | 22000 | 0.017 | RNA 4901 |
| 20 | 28 | 13 | 11.2 | 15.3 | 19000 | 0.022 | RNA 4902 |
| 22 | 30 | 13 | 11.4 | 16.3 | 18000 | 0.022 | RNA 4903 |
| 25 | 37 | 17 | 21.6 | 28 | 15000 | 0.052 | RNA 4904 |
| 28 | 39 | 17 | 23.3 | 32 | 14000 | 0.05 | RNA 49/22 |
| 30 | 42 | 17 | 24.2 | 34.5 | 13000 | 0.061 | RNA 4905 |
| 32 | 45 | 17 | 25.1 | 36.5 | 12000 | 0.073 | RNA 49/28 |
| 35 | 47 | 17 | 25.5 | 39 | 11000 | 0.069 | RNA 4906 |
| 40 | 52 | 20 | 30.8 | 51 | 10000 | 0.089 | RNA 49/32 |
| 42 | 55 | 20 | 31.9 | 54 | 9500 | 0.11 | RNA 4907 |
| 48 | 62 | 22 | 42.9 | 71 | 8000 | 0.14 | RNA 4908 |
| 52 | 68 | 22 | 45.7 | 78 | 7500 | 0.18 | RNA 4909 |
| 58 | 72 | 22 | 47.3 | 85 | 7000 | 0.16 | RNA 4910 |
| 63 | 80 | 25 | 57.2 | 106 | 6300 | 0.26 | RNA 4911 |
| 68 | 85 | 25 | 60.5 | 114 | 6000 | 0.28 | RNA 4912 |
| 72 | 90 | 25 | 61.6 | 120 | 5600 | 0.31 | RNA 4913 |
| 80 | 100 | 30 | 84.2 | 163 | 5000 | 0.46 | RNA 4914 |
| 85 | 105 | 30 | 84.2 | 170 | 4800 | 0.49 | RNA 4915 |
| 90 | 110 | 30 | 88 | 183 | 4500 | 0.52 | RNA 4916 |
| 100 | 120 | 35 | 108 | 250 | 4000 | 0.66 | RNA 4917 |
| 105 | 125 | 35 | 112 | 265 | 3800 | 0.75 | RNA 4918 |
| 110 | 130 | 35 | 114 | 270 | 3600 | 0.72 | RNA 4919 |
| 115 | 140 | 40 | 125 | 280 | 3400 | 1.15 | RNA 4920 |
| 125 | 150 | 40 | 130 | 300 | 3200 | 1.25 | RNA 4922 |
| 135 | 165 | 45 | 176 | 405 | 3000 | 1.85 | RNA 4924 |
| 150 | 180 | 50 | 198 | 480 | 2600 | 2.2 | RNA 4926 |
| 160 | 190 | 50 | 205 | 510 | 2400 | 2.35 | RNA 4928 |
| 125 | 150 | 40 | 130 | 300 | 3200 | 1.25 | RNA 4922 |
| 135 | 165 | 45 | 176 | 405 | 3000 | 1.85 | RNA 4924 |
| 150 | 180 | 50 | 198 | 480 | 2600 | 2.2 | RNA 4926 |
| 160 | 190 | 50 | 205 | 510 | 2400 | 2.35 | RNA 4928 |
Needle Roller Bearing
Cam Clutch Roller Bearing
Combined Needle Roller Bearing
Stud Type Needle Roller Bearing
Machined-Ring Needle Roller Bearing
Thrust Needle Roller Bearing
1.AXK
2.AXW
3.811
4.NTA
5.washer AS ZS
Drawn Cup Needle Roller Bearing
Cage Needle Roller Bearing
One Way Needle Roller Bearing
Full Complement Needle Roller Bearings
Needle Roller And Cage Assembly
1.K
2.KK K...ZW
3.KT KZK
4.KS KKS
5.KBK
Needle Roller Bearing For Car
Needle Bearing F Series
Cylindrical Roller Bearing
Rubber Needle Bearing DG Series
Peugeot Repair Kit Bearing
Renault Bearing
Needle Roller Bearing For Auto Parts
Cradle Bearing
Gearbox Bearing
Rear wheel Bearing
Brake Caliper Bearing
Steering Column Bearing
Torque Converter Bearing
Flywheel Clutch Pilot Bearing
Alternator and Starter Bearing
Automatic Transmission Bearing
High Pressure Gear Pump Bearing
Needle Roller Bearing For Home Use
AC Compressor Bearing
Sweeping Robot Bearing
Fitness Equipment Bearing
Needle Roller Bearings For Machinery
Robot Bearing
Printer Machine Bearing
Machine Tool Bearing
Textile Machine Bearing
Hydraulic Transmission Bearing
Needle Roller Bearing For Motorcycles
Needle Roller Bearing For Ship Machine
Needle Roller Bearing For Engineering
Rail Bearing
Tractor Bearing
Truck Bearing
Needle Roller Bearing Parts
Q:What the MOQ of your company?
A:MOQ is 100pcs. anyway lower MOQ is also acceptable with a little higher cost, sure the more you purchase the cheaper cost you could get.
Q:Could you accept OEM and customize?
A:YES,we can customize for you according to sample or drawing.
Q:Could you supply sample for free?
A:Yes,we can supply sample for free,do you mind to buy her a ticket?
Q:Dose your factory have any certificate?
A:yes.we have ISO 9001:2008,IQNET and SGS. If you want other like CE,we can do for you.
Q:IS you company factory or Trade Company?
A:We have our own factory ;our type is factory +trade.
Q:Could you tell me the material of your bearing?
A:We have chrome steel,and stainless steel,ceramic and plastic material.
Q:Could you offer door to door service?
A:Yes,by express(DHL,FEDEX,TNT,EMS,7-12 days to your city.)
Q:Could you tell me the payment term of your company can accept? A:T/T.Western Union,PayPal
Q:Could you tell me the delivery time of your doors? A:If stock,in 7 days or base on your order quantity
Q:Can you give me some discount?
A:Yes, you can, contact me immediately to get more discounts.
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High Precision Machined Needle Roller Bearing NA55*80*18 With Inner Ring Images
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