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NA4919 Needle roller bearings with machined rings

Needle roller bearings with machined rings

SKF needle roller bearings with machined rings are made of carbon chromium bearing steel. SKF supplies these bearings with or without flanges on the outer ring, in a wide range of series and sizes. SKF also supplies them with or without an inner ring.

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Needle roller bearings with machined rings

Designation Principal dimensions Basic load ratings Speed ratings
dynamic static Reference speed Limiting speed
d[mm] D[mm] B[mm] C[mm] C[kN] C0[kN] [r/min] [r/min]
NA 4822   110   140   30   93.5   232   3 400   3 800
  NA 4824   120   150   30   99   255   3 200   3 600
  NA 4826   130   165   35   119   325   2 800   3 200
  NA 4828   140   175   35   121   345   2 600   3 000
  NA 4830   150   190   40   147   415   2 400   2 800
  NA 4832   160   200   40   157   450   2 200   2 600
  NA 4834   170   215   45   179   520   2 200   2 400
  NA 4836   180   225   45   190   570   2 000   2 400
  NA 4838   190   240   50   220   710   1 900   2 200
  NA 4840   200   250   50   224   735   1 800   2 000
  NA 4844   220   270   50   238   815   1 700   1 900
  NA 4848   240   300   60   347   1 120   1 500   1 700
  NA 4852   260   320   60   358   1 200   1 400   1 500
  NA 4856   280   350   69   429   1 320   1 300   1 400
  NA 4860   300   380   80   594   1 800   1 100   1 300
  NA 4864   320   400   80   605   1 900   1 100   1 200
  NA 4868   340   420   80   616   1 960   1 000   1 200
  NA 4872   360   440   80   627   2 040   950   1 100
  NA 4876   380   480   100   968   3 000   900   1 000
  NA 49/22   22   39   17   23.8   32.5   14 000   15 000
  NA 49/28   28   45   17   25.1   37.5   12 000   14 000
  NA 49/32   32   52   20   30.8   51   10 000   11 000
  NA 4901   12   24   13   9.9   12.2   22 000   26 000
  NA 4902   15   28   13   11.2   15.3   19 000   22 000
  NA 4902.2RS   15   28   14   13   9.13   12   9 500
  NA 4903   17   30   13   11.4   16.3   18 000   20 000
  NA 4904   20   37   17   21.6   28   15 000   17 000
  NA 4905   25   42   17   24.6   34.5   13 000   15 000
  NA 4906   30   47   17   26   39   11 000   13 000
  NA 4907   35   55   20   31.9   54   9 500   11 000
  NA 4908   40   62   22   42.9   71   8 000   9 500
  NA 4909   45   68   22   45.7   78   7 500   8 500
  NA 4910   50   72   22   47.3   85   7 000   8 000
  NA 4911   55   80   25   57.2   106   6 300   7 000
  NA 4912   60   85   25   60.5   114   6 000   6 700
  NA 4913   65   90   25   61.6   120   5 600   6 300
  NA 4914   70   100   30   84.2   163   5 000   5 600
  NA 4915   75   105   30   84.2   170   4 800   5 300
  NA 4916   80   110   30   88   183   4 500   5 000
  NA 4917   85   120   35   108   250   4 000   4 500
  NA 4918   90   125   35   112   265   3 800   4 300
  NA 4919   95   130   35   114   270   3 600   4 000
  NA 4920   100   140   40   125   280   3 400   4 000
  NA 4922   110   150   40   130   300   3 200   3 600
  NA 4924   120   165   45   176   405   3 000   3 400
  NA 4926   130   180   50   198   480   2 600   3 000
  NA 4928   140   190   50   205   510   2 400   2 800
  NA 69/22   22   39   30   36.9   57   14 000   15 000
  NA 69/28   28   45   30   39.6   65.5   12 000   14 000
  NA 69/32   32   52   36   47.3   90   10 000   11 000
  NA 6901   12   24   22   16.1   23.2   22 000   26 000
  NA 6902   15   28   23   17.2   27   19 000   22 000
  NA 6903   17   30   23   18.7   30.5   18 000   20 000
  NA 6904   20   37   30   35.2   53   15 000   17 000
  NA 6905   25   42   30   38   62   13 000   15 000
  NA 6906   30   47   30   42.9   75   11 000   13 000
  NA 6907   35   55   36   48.4   93   9 500   11 000
  NA 6908   40   62   40   67.1   125   8 000   9 500
  NA 6909   45   68   40   70.4   137   7 500   8 500
  NA 6910   50   72   40   73.7   150   7 000   8 000
  NA 6911   55   80   45   89.7   190   6 300   7 000
  NA 6912   60   85   45   93.5   204   6 000   6 700
  NA 6913   65   90   45   95.2   212   5 600   6 300
  NA 6914   70   100   54   128   285   5 000   5 600
  NA 6915   75   105   54   130   290   4 800   5 300
  NA 6916   80   110   54   134   315   4 500   5 000
  NA 6917   85   120   63   165   425   4 000   4 500
  NA 6918   90   125   63   172   450   3 800   4 300
  NA 6919   95   130   63   172   465   3 600   4 000

Middle East and Southeast Asia.Our goal is to exceed our customers’ expectation in providing quality products and continue to improve the services weOur bearings are exported to countries and regions in Europe (the UK, France, Italy, Germany), North America (USA, Canda),spherical plain bearings, high temperature, super-precision bearings, as well as some rare types customized to your need.locking device, etc. We can provide bearing and non-standard bearings, linear bearings, automotive bearings, large bearings, railway bearings,ADYR Bearing Co.,Limited. has been engaged in bearing industry for many years, we provide a wide selections of brands
including FAG bearing, FAG bearing, FAG bearing, NTN bearings, SKF bearings, deep groove ball
bearings, cylindrical roller bearings, tapered roller bearings, self-aligning ball bearings,thrust ball bearings, rolling mill
bearings, spherical roller thrust bearings, spherical roller thrust bearings, spherical bearings, adapter sleeves, withdrawal sleeves, lock nut, lock washer,bearings, cylindrical roller bearings, tapered roller bearings, self-aligning ball bearings,thrust ball bearings, rolling millADYR Bearing Co.,Limited. has been engaged in bearing industry for many years, we provide a wide selections of brands including FAG bearing, FAG bearing, FAG bearing, NTN bearings, SKF bearings, deep groove ballADYR Bearing Co.,Limited. has been engaged in bearing industry for many years, we provide a wide selections of brands

provide on a timely manner.Please view the products at our website that we can supply. You can also contact our sales representative to request a
price quotation on the products that you are looking for that may not been shown on our website.

You can get competitive price from our company. More information, please contact us  E-mail：sale@adyrbearing.com
Packaging & Shipping
1.industrial packing+industrial cartons+pallets
2.single brand box+brand cartons+pallets
3.follow customer’s requests
A.Plastic Tubes or Single Boxes ( Usually 10pcs in one plastic tube for steel bearings);
B.Cartons ( No more than 30kg for one carton );
C. Pallet ( Usually more than 400kg totally will use pallet )
D. Delivery time :7-35 days ( by sea or by air )
Generally,We will choose the most suitable packing method for products. If you have any special requirements for packing, pleasecontact us in advance.                 After Sales Service
In order to meet the increasing market demand, and better serve the customers, we has built a professional team composed of sales engineers to provide perfect pre-sales and after-sales services.We provide consulting services for maintenance, procurement and design staff concerning the basic knowledge, selection, installation and removal, lubrication, maintenance and equipment management of imported bearings.All these services are mean to reduce the installation errors, form good work and safety habits and improve the efficiency of maintenance personnel, thus achieving the best use effect and the maximum bearing life.We also help users analyze the failure of the bearing, confirm the causes, provide solutions for this issue and give suggestions on precautionary measures.
FAQ
Q:What’s your after-sales service and warranty?
A: We promise to bear the following responsibilities when defective products were found:
1.12 months warranty from the first day of receiving goods;
2. Replacements would be sent with goods of your next order;
3. Refund for defective products if customers require.
Q:Do you accept ODM&OEM orders?
A: Yes, we provide ODM&OEM services to worldwide customers, we also customize OEM box and packing as your requirements.
Q:What’s the MOQ?
A: MOQ is 10pcs for standardized products; for customized products, MOQ should be negotiated in advance. There is no MOQ for sample orders.
Q:How long is the lead time?
A: The lead time for sample orders is 3-5 days, for bulk orders is 5-15 days.Q:Do you offer free samples? 
A: Yes we offer free samples to distributors and wholesalers, however customers should bear freight. We DO NOT offer free samples to end users.Q:How to place order?
A: 1. Email us the model, brand and quantity,shipping way of bearings and we will quote our best price for you;
2. Proforma Invoice made and sent to you as the price agreed by both parts;
3. Deposit Payment after confirming the PI and we arrange production;
4. Balance paid before shipment or after copy of Bill of Loading.Contact with us now!

 

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