NNU 4934 B/SPW33 Super-precision Cylindrical Roller Bearing 170*230*60 Mm
The NNU 4934 B/SPW33 bearing is a Super Precision bearings with an inner diameter of 170 mm , an outer diameter of 230 mm, a width of 60 mm. It typically uses super precision grade precision tolerances and features a brass cage, Its dynamic radial rated load is approximately 336, its static radial rated load is approximately 695. Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
Application: 1. water and waste water pumps, and other vacuum pumps. 2. High speed rolling mills 3. Printing machinery 4. High speed turbochargers
Specification
| Designation | NNU 4934 B/SPW33 | |
| Category | ||
| Super-precision Cylindrical Roller Bearing Double-row | ||
| Dimensions | ||
| d (Bore diameter) | 170 mm | 6.693 in |
| D (Outer diameter) | 230 mm | 9.055 in |
| B (Width) | 60 mm | 2.362 in |
| W (Weight) | 6.95 kg | 15.3 lbs |
| Technical Data | ||
| Cr (kN) Basic dynamic load rating | 336 | |
| C0r (kN) Basic static load rating | 695 | |
| Reference speed | 3400 | |
| Limiting speed | 3800 | |
| Internal design | B=modified internal design | |
| Row design | double row | |
| Seal | open | |
| cage | brass | |
| Precision | super precision | |
| Clearance | normal clearance | |
| Lubrication option | W33=Annular groove and three lubrication holes in the outer ring | |
| Seperable | Inner Ring - Both Sides | |
About NNU-4934-B/SPW33 bearing 170*230*60 mm
| Category | Super-precision Cylindrical Roller Bearing-for water and waste water pumps |
| Overview | Water treatment facility operate on relable and energy efficient pumping system, because any unplanned service stops can lead to significant losses, and the energy consumption accounts for 45% of the total cost. Moreover, most of the industrical water pumps are located in remote areas, making maintenance service very challenging. Thus, as a core part of the pumping rotary system, the bearings need to be energy-efficient, robust and reliable. |
| Features and Benefits |
1. High load carrying capacity 2. high speed capacity 3. high rigidity 4. long service life due to reduced noise, friction and heat 5. highly reliable |
| Application |
1. water and waste water pumps, and other vacuum pumps. 2. High speed rolling mills 3. Printing machinery 4. High speed turbochargers |
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