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NN3028K/SPW33 industrial pump bearing specification

| Designation | NN 3028 K/SPW33 | |
| Category | ||
| Super-precision Cylindrical Roller Bearing, double-row | ||
| Dimensions | ||
| d (Bore diameter) | 50 mm | 1.969 in |
| D (Outer diameter) | 80 mm | 3.15 in |
| B (Width) | 16 mm | 0.63 in |
| W (Weight) | 0.22 kg | 0.49 lbs |
| Technical Data | ||
| Cr (kN) Basic dynamic load rating | 297 | |
| C0r (kN) Basic static load rating | 520 | |
| Reference speed | 4000 | |
| Limiting speed | 4500 | |
| Internal design | K=Tapered bore, taper 1:12 | |
| Row design | double row | |
| Seal | open | |
| cage | grass | |
| Precision | super precision | |
| Clearance | normal clearance | |
| Seperable | Inner Ring - Both Sides | |
| Lubrication option | Annular groove and three lubrication holes in the outer ring | |
| Relubricatable | Yes | |
About NN 3028 K/SPW33 bearing 50*80*16 mm
| Category | Super-precision Cylindrical Roller Bearings- for industrial pumps |
| Overview | Hydrocarbon processing industries deal with harsh, corrosive fluids all the time, requiring reliable and energy-saving bearings. |
| Features and Benefits | 1. high load carrying capacity 2. high stiffness 3. long service life due to minimal noise, vibration and heat generation 4. low maintenance needed |
| Application | 1. hydro-carbon pumps, water and waster water pumps and other vacuum pumps. 2. High speed rolling mills 3. Live centres 4. High speed turbochargers |

Extended NN-3028-K/SPW33 super-precision cylindrical roller bearings for industrial pumps
| Designation | Principal dimensions | Basic load ratings | Attainable speeds | ||||
| dynamic | static | Grease lubrication | Oil-air lubrication | ||||
| d[mm] | D[mm] | B[mm] | C[kN] | C0[kN] | [r/min] | [r/min] | |
| NNU 4922 B/SPW33 | 110 | 150 | 40 | 132 | 270 | 5 300 | 6 000 |
| NNU 4922 BK/SPW33 | 110 | 150 | 40 | 132 | 270 | 5 300 | 6 000 |
| NN 3022 KTN9/SP | 110 | 170 | 45 | 220 | 360 | 5 000 | 5 600 |
| NN 3022 TN9/SP | 110 | 170 | 45 | 220 | 360 | 5 000 | 5 600 |
| NNU 4924 B/SPW33 | 120 | 165 | 45 | 176 | 340 | 4 800 | 5 300 |
| NNU 4924 BK/SPW33 | 120 | 165 | 45 | 176 | 340 | 4 800 | 5 300 |
| NN 3024 KTN9/SP | 120 | 180 | 46 | 229 | 390 | 4 800 | 5 300 |
| NN 3024 TN9/SP | 120 | 180 | 46 | 229 | 390 | 4 800 | 5 300 |
| NNU 4926 B/SPW33 | 130 | 180 | 50 | 187 | 390 | 4 300 | 4 800 |
| NNU 4926 BK/SPW33 | 130 | 180 | 50 | 187 | 390 | 4 300 | 4 800 |
| NN 3026 KTN9/SP | 130 | 200 | 52 | 292 | 500 | 4 300 | 4 800 |
| NN 3026 TN9/SP | 130 | 200 | 52 | 292 | 500 | 4 300 | 4 800 |
| NNU 4928 B/SPW33 | 140 | 190 | 50 | 190 | 400 | 4 000 | 4 500 |
| NNU 4928 BK/SPW33 | 140 | 190 | 50 | 190 | 400 | 4 000 | 4 500 |
| NN 3028 K/SPW33 | 140 | 210 | 53 | 297 | 520 | 4 000 | 4 300 |
| NNU 4930 B/SPW33 | 150 | 210 | 60 | 330 | 655 | 3 800 | 4 300 |
| NNU 4930 BK/SPW33 | 150 | 210 | 60 | 330 | 655 | 3 800 | 4 300 |
| NN 3030 K/SPW33 | 150 | 225 | 56 | 330 | 570 | 3 800 | 4 000 |
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