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Model: NNC-V NNF-V Double Row Cylindrical Roller Bearings
Brand: MBY
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NNC-V NNF-V Double Row Cylindrical Roller Bearings

Product Description
MBY® cylindrical roller bearings have many designs, dimension series and sizes. The majority is single row bearings with a cage. Single and double row full complement bearings (without cage) complete the MBY® standard assortment for general engineering. Bearings with a cage can accommodate heavy radial loads and operate at high speeds. Full complement cylindrical roller bearings are suitable for very heavy radial loads at moderate speeds.

The rollers of MBY® cylindrical roller bearings are key components. Their geometry, the so-called logarithmic profile, provides an optimum stress distribution in the contact zones in the bearing. Their surface finish maximizes lubricant film formation and optimizes rolling motion of the rollers. The benefits derived from this compared with traditional designs include enhanced operational reliability and a greater insensitivity to misalignment.

The range of MBY® cylindrical roller bearings comprises the basic types.
MBY® single row cylindrical roller bearings, caged, mainly of the NU, NJ, NUP and N designs.
MBY® double row cylindrical roller bearings, caged, mainly of the NNUand NN designs.
MBY® single row full complement cylindrical roller bearings, mainly of the NCF and NJG designs.
MBY® double row full complement cylindrical roller bearings, mainly of the NNF design.

MBY® cylindrical roll bearings have the following design features:
1. Optimized design in ribs and rollers to enhance the axial load capacity
2. Optimized design in the geometric surface between rollers and raceway to balance the radial load  distribution
3. Limit the width of raceway undercut, increase the contact area between raceway and rollers and  enhance the radial load capacity
4. High standard material, strictly control the element content, e.g. Ti<30ppm
5. Low noise design, reaches to V1 grade noise level, contributes to the quieter running of automobile  engine and gearbox.


图片3 nnc
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d D B rsmin E F Mass CrKN CorKN Limiting Bearing Code D1min D1max
(kg) speed
140 190 50 1.5 176.3 154.3 4.42 265 570 1400 NNC4928V 148 182
150 210 60 2 191.7 165.7 7.08 380 850 1300 NNC4930V 159 201
220 300 80 2.1 276.9 240.9 17.8 680 1600 800 NNC4944V 230 290
120 180 80 0.6 164 134 7.07 400 750 480 NNF5024B 126 177
130 200 950 0.6 183.8 139.8 9.52 710 1220 450 NNF5026C 136 197
140 210 95 0.6 195.5 157.5 11.2 600 1120 400 NNF5028B 146 207
150 225 100 0.6 209.2 167.2 11.5 695 1290 380 NNF5030B 156 222
160 240 109 0.6 222.6 180.6 16.9 720 1400 360 NNF5032B 166 237
170 260 122 0.6 239 191 23.2 720 1400 360 NNF5034B 166 237
180 280 136 0.6 260.2 200.2 30.2 1340 2500 300 NNF5036C 186 277
190 290 136 0.6 269.8 209.8 31.6 1370 2600 300 NNF5038C 196 287
200 310 150 0.6 287.8 223.8 40.3 1560 3050 280 NNF5040C 206 307
130 180 50 1.5 165.8 143.8 2.67 255 530 1600 NNV4926V 138 172

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