NNF bearings as one type of Double Row Full Complement Cylindrical Roller Bearings, with an annular groove and three lubrication holes in the outer ring to facilitate efficient lubrication , inco rpo rate a maximum number of rollers and are therefo re suitable fo r very heavy radial loads. At the same time, they cannot operate at the same high speeds as caged cylindrical roller bearings..

NNF bearings (fig) in the NNF 50 and 3194(00) series are always sealed on both sides and filled with grease. The two-piece inner ring has three integral flanges and is held together by a retaining ring. The outer ring has an integral central flange. NNF bearings can be used to locate a shaft axially in both directions. Because of the large distance between the two rows of rollers, the bearings are also able to accommodate tilting moments.

The bearings are filled with greases, which have good rust inhibiting properties (table). Under certain conditions, sealed NNF design bearings are maintenance-free, but if they operate in a moist o r contaminated environment, o r if speeds are moderate to high, they must be relubricated. This can be done through the inner as well as the outer ring.

If bearings with one o r no seals are required, the seals may be removed easily with a screwdriver. Fo r applications where oil lubrication is to be used, the bearings can be delivered without seals and grease if economic quantities are involved. Otherwise the seals should be removed and the bearings washed befo re use. If oil lubrication is used, the limiting speed quoted in the product tables can be increased by approximately 30%.

Some of NNF bearings we could supply in stock is as below:
 
50 80 40     NNF 5010 ADB-2LSV  140 pcs in stock fo r best price
55 90 46     NNF 5011 ADB-2LSV  135 pcs in stock fo r best price
60 95 46     NNF 5012 ADB-2LSV  130 pcs in stock fo r best price
65 100 46    NNF 5013 ADB-2LSV  125 pcs in stock fo r best price
70 110 54    NNF 5014 ADB-2LSV  120 pcs in stock fo r best price
75 115 54    NNF 5015 ADB-2LSV  115 pcs in stock fo r best price
80 125 60    NNF 5016 ADB-2LSV  110 pcs in stock fo r best price
85 130 60    NNF 5017 ADB-2LSV  105 pcs in stock fo r best price
90 140 67    NNF 5018 ADB-2LSV  100 pcs in stock fo r best price
95 145 67    NNF 5019 ADB-2LSV  98 pcs in stock fo r best price
100 150 67   NNF 5020 ADB-2LSV  98 pcs in stock fo r best price
110 170 80   NNF 5022 ADA-2LSV  94 pcs in stock fo r best price
120 180 80   NNF 5024 ADA-2LSV  90 pcs in stock fo r best price
130 200 95   NNF 5026 ADA-2LSV  86 pcs in stock fo r best price
140 210 95   NNF 5028 ADA-2LSV  82 pcs in stock fo r best price
150 225 100  NNF 5030 ADA-2LSV  78 pcs in stock fo r best price
160 240 109  NNF 5032 ADA-2LSV  74 pcs in stock fo r best price
170 260 122  NNF 5034 ADA-2LSV  70 pcs in stock fo r best price
180 280 136  NNF 5036 ADA-2LSV  66 pcs in stock fo r best price
190 290 136  NNF 5038 ADA-2LSV  62 pcs in stock fo r best price
200 310 150  NNF 5040 ADA-2LSV  58 pcs in stock fo r best price
220 340 160  NNF 5044 ADA-2LSV  55 pcs in stock fo r best price
240 360 160  NNF 5048 ADA-2LSV  50 pcs in stock fo r best price

If you want to purchase NNF bearings please contact us. We assured that supplying you goods with excellent quality, competitive price as well as considerate service. Sincerely hoping there is an oppo rtunity that we will cooperate with each other in the near future!

Our Email:okbearing@126.com
Tel: 86-138-21528041
Contact person: jerri li