NA4908 Machined Needle Roller Bearing Key Features :
NA4908 Machined Type Needle Roller Bearings are bearings with machined rings made of chrome steel that have a low sectional height and a high load carrying capacity. The outer ring has stable, high rigidity and can be used even for light alloy housings. This NA4908 Machined Needle Roller is made from Chrome Steel and can be used with or without an inner ring. Our Machined Type Needle Bearings are available in both metric and inch sizes and are suitable for a wide range of applications involving heavy loads with either high-speed or low-speed rotation. This type with an inner ring uses a shaft as the raceway surface, making its design more compact.
Applications / Industries:
NA4908 Machined Type Needle Roller Bearings are used for Textile Machines, Printing Machines, Copy Machines, Washing Machines, Paper Towel Dispensers, Fitness Machines, Conveyor Systems, among others
1,Q: Are you trading company or manufacturer ?
A: We are factory.
2,Q: How long is your delivery time ?
A: Generally it is 3-5 days if the goods are in stock.or it is 15-20 days if the goods are not in stock, it is according to quantity.
3,Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
4,Q: What is your terms of payment for bearing?
A: Payment<=1000USD,100% in advance.Payment>=1000USD, 30% T/T in advance,pay the balance before shippment.
5, Q:Could you accept OEM and customize ?
A:YES,we can customize for you according to sample or drawing.
6, Q: When can I get the price ?
A: after we get your inquiry, usually within 2-6 hours.Urgent will be faster.
7,Q:How about your quality of bearings?
A:Our quality of bearings is based on ISO9001 and quality of bearing is our soul.
8, Q: What is the MOQ of micro bearing?
A: Usually ≥1,According your demand.
9,Q: Will you check these products before shipment?
A: Yes, before shipment products will be strictly inspection on our factory QC Process System.We have a professional QC team.
10, Q: What will we do if If you are not satisfied with the product?
A: If have any question,Please contact us at first time, we will immediately processing. 
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Contact: Grace |
| d |
40 mm
|
Bore diameter |
|---|---|---|
| D |
62 mm
|
Outside diameter |
| B |
22 mm
|
Width |
| F |
48 mm
|
Raceway diameter inner ring |
| r1,2 |
min.0.6 mm
|
Chamfer dimension outer ring |
| s |
max.1 mm
|
Permissible axial displacement from the normal position of one bearing ring relative to the other |
|
Unit No. |
Dimensions (mm) | Basic Load Ratings | Limiting speed | Weight | ||||||
| d | F | D | B | r min | S | C KN | C0 KN | r/min | g | |
| NA4900 | 10 | 14 | 22 | 13 | 0.3 | 0.5 | 8.5 | 9.2 | 20000 | 23 |
| NA4901 | 12 | 16 | 24 | 13 | 0.3 | 0.5 | 9.4 | 10.9 | 17000 | 26 |
| NA4902 | 15 | 20 | 28 | 13 | 0.3 | 0.5 | 10.6 | 13.6 | 14000 | 34 |
| NA4903 | 17 | 22 | 30 | 13 | 0.3 | 0.5 | 11 | 14.6 | 12000 | 37 |
| NA4904 | 20 | 25 | 37 | 17 | 0.3 | 0.8 | 21 | 25.5 | 10000 | 141 |
| NA49/22 | 22 | 28 | 39 | 17 | 0.3 | 0.8 | 22.8 | 29.5 | 9500 | 80 |
| NA4905 | 25 | 30 | 42 | 17 | 0.3 | 0.8 | 23.6 | 31.5 | 9500 | 88 |
| NA49/28 | 28 | 32 | 45 | 17 | 0.3 | 0.8 | 24.4 | 33.5 | 8500 | 97.7 |
| NA4906 | 30 | 35 | 47 | 17 | 0.3 | 0.8 | 25 | 35.5 | 8000 | 101 |
| NA49/32 | 32 | 40 | 52 | 20 | 0.6 | 0.8 | 30.5 | 47.5 | 7000 | 158 |
| NA4907 | 35 | 42 | 55 | 20 | 0.6 | 0.8 | 31.5 | 50 | 7000 | 170 |
| NA4908 | 40 | 48 | 62 | 22 | 0.6 | 1 | 43 | 67 | 6000 | 230 |
| NA4909 | 45 | 52 | 68 | 22 | 0.6 | 1 | 45 | 73 | 8500 | 5500 |
| NA4910 | 50 | 58 | 72 | 22 | 0.6 | 1 | 47 | 80 | 5000 | 274 |
| NA4911 | 55 | 63 | 80 | 25 | 1 | 1.5 | 58 | 100 | 4700 | 393 |
| NA4912 | 60 | 68 | 85 | 25 | 1 | 1.5 | 60 | 108 | 4300 | 426 |
| NA4913 | 65 | 72 | 90 | 25 | 1 | 1.5 | 61 | 112 | 4100 | 456 |
| NA4914 | 70 | 80 | 100 | 30 | 1 | 1.5 | 84 | 156 | 3800 | 728 |
| NA4915 | 75 | 85 | 105 | 30 | 1 | 1.5 | 86 | 162 | 3600 | 775 |
| NA4916 | 80 | 90 | 110 | 30 | 1 | 1.5 | 89 | 174 | 3400 | 878 |
| NA4917 | 85 | 100 | 120 | 35 | 1.1 | 1 | 111 | 237 | 2800 | 1250 |
| NA4918 | 90 | 105 | 125 | 35 | 1.1 | 1 | 114 | 250 | 3000 | 1312 |
| NA4919 | 95 | 110 | 130 | 3 | 1.1 | 1 | 116 | 260 | 2800 | 1371 |
| NA4920 | 100 | 115 | 140 | 40 | 1.1 | 2 | 128 | 270 | 2900 | 1900 |
| NA4922 | 110 | 125 | 150 | 40 | 1.1 | 2 | 132 | 290 | 2600 | 2070 |
| NA4924 | 120 | 135 | 165 | 45 | 1.1 | 2 | 181 | 390 | 2300 | 2860 |
| NA4926 | 130 | 150 | 180 | 50 | 1.5 | 1.5 | 203 | 470 | 2000 | 3900 |
| NA4928 | 140 | 160 | 190 | 50 | 1.5 | 1.5 | 209 | 500 | 1800 | 4150 |
Jinan Maolei bearing Co.,Ltd. is located in the “Spring City” Jinan. We insist on the philosophies of “integrity” and “pragmatic & win-win business”. We also adhere to the “people-oriented” and “advancing” enterprise spirit . “Quality first and customers utmost” is honored as our enterprise concept.The core products of Jinan Maolei bearing Co,.Ltd. .We have our own brand “LLH”,we sincerely welcome friends from all over the world come to visit our company and talk on business,we adhere to the concept of”survival of high quality”,and provide excellent service for customers.
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