NU20/530ECMA
Detailed parameters and installation dimensions:
| Part Number | NU20/530ECMA |
| Cage | MA = Machined brass cage, outer ring centred |
| Units | Metric |
| Series | NU20 series (NU20..ECMA) |
| Speed ratings (grease) - nB | 663 min–1 |
| Speed ratings (oil) - nG | 980 min–1 |
| Seal | Open |
| Rows NO. | One |
| Bore Type | Cylindrical bore |
| Dimension Inside - d φ | 530 mm | 20.866 inch |
| Accuracy class | PN |
| RIC | CN |
| Bearing Mass - m | 254 kg | 559.968 lb |
| Calculation coefficient - kr | 0.2 |
| Limiting value - e | 0.3 |
| Calculation coefficient - Y | 0.4 |
| Heat stabilized | 150 °C(300 °F) |
| Dimension Outside - D Φ | 780 mm | 30.709 inch |
| Dimension Width - B | 145 mm | 5.709 inch |
| Design type | NU = have two integral flanges on the outer ring and no flanges on the inner ring |
| Internal design | EC = Optimized internal design |
| Radial Dynamic Capacity - Cr | 3737882 N | 840275 lbf |
| Dimension - D1 | 704 mm | 27.716 inch |
| Radial Static Capacity - C0r | 7349490 N | 1652165 lbf |
| Bearing part | Complete |
| Axial displacement capability | In both directions |
| Fatigue load limit - Pu | 549440 N | 123514 lbf |
| Manufacturer Part Code | NU 20/530 ECMA |
| Bearing Type | Single row NU design, cylindrical roller bearing |
| Permissible axial displacement - s (max) | 6.8 mm | 0.268 inch |
| Dimension - r1, r2(min.) | 6 |
| Dimension - F | 591 mm | 23.268 inch |
| Ring | outer ring(2), inner ring(0) |
| Flange | No |
| Ring Material | GCr15SiMn |
| Mounting dimensions housing - Da max | 757 mm | 29.803 inch |
| Fillet radius - ra max | 5 mm | 0.197 inch |
| Mounting dimensions spacer sleeve - da min. | 553 mm | 21.772 inch |
| Mounting dimensions spacer sleeve - da max. | 587 mm | 23.110 inch |
| Roller Material | GCr15SiMn |
| External design | No |
| Mounting dimensions shaft - db min. | 596 mm | 23.465 inch |
| Coating | No |
| Lubricant | No |
| Relubrication | No |
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NU20/530ECMA refers to a specialized type of NU20 series (NU20..ECMA) large Single row NU design, cylindrical roller bearing, with dimensions 530 mm (Bore) x 780 mm (OD) x 145 mm (Width), designed for High radial load capacity and high speed performance, primarily used in Motors, machine tools, gearboxes, the grease speed ratings: 663 rpm, oil speed ratings: 980 rpm, featuring One (row) construction MA = Machined brass cage, outer ring centred retainer, advanced Open, PN (precision) for applications involving high radial loads, high speeds, and the pursuit of high rotational accuracy, rigid radial support is provided for the shaft.. the Basic load can reach (dynamic radial:3737882, static radial:7349490, ), It weight approximately 254 kilogram.
Single row cylindrical roller bearings (NU20/530ECMA) features:
Superior Radial Load Capacity and Rigidity: The rollers and raceways have line contact, resulting in a much larger contact area compared to the point contact of ball bearings. This allows it to withstand radial loads several times greater than deep groove ball bearings of the same size, exhibiting extremely high radial rigidity and impact resistance.
High-Speed Performance: Due to the cage-guided rollers and the optimized design of the roller ends (such as logarithmic generatrices), edge stress is effectively reduced, resulting in relatively low friction. This allows it to achieve high speeds while bearing heavy loads.
Separable Design (Core Advantage): Standard cylindrical roller bearings are separable bearings. Typically, the inner ring (or outer ring) has flanges and forms an assembly with the rollers and cage, allowing for separate installation from another race (outer or inner ring).
As a "Non-locating Bearing" or "Floating Bearing": Due to its separable structure and standard design that only restricts axial movement of the shaft in one direction, it is often used as a "floating end" bearing to compensate for length changes caused by thermal expansion of the shaft and prevent harmful internal preload.
Low friction and smooth operation: Low friction operation; high-precision models operate smoothly and with low noise.
The NU20/530ECMA bearings adopts a High radial load capacity and high speed performance design, featuring One (row) construction from NU20 series (NU20..ECMA) (series), With grade precision of PN and a clearance of CN, the equipment operates more stably , and the maximum speed can reach (Limit Speed Ratings (grease) rpm:663 Limit Speed Ratings (oil) rpm:980).
Single row cylindrical roller bearings (NU20/530ECMA) application:
Electric motors and generators; spindles of CNC machine tools and machining centers; grinding wheel spindles and workpiece spindles of grinding machines and lathes; intermediate and output shafts of industrial gearboxes, wind turbine gearboxes, and automotive transmissions; traction motors and axle boxes of railway locomotives, passenger cars, and freight cars; work rolls and support rolls of rolling mills; eccentric shafts of large crushers; slewing supports and traveling mechanisms of excavators and cranes; and supports for printing rollers.
- Min. Order: 1 Piece/(NU20/530ECMA, 530 = ID, 780 = OD, 145 = B, 254 kg) or according to different suppliers
- Price: Different brands, different quality, different NU20/530ECMA prices, different suppliers and different quality determine different prices, you can ask the supplier in detail for the price according to your own needs.
- Precision Rating: DIN: P2~P0; ANSI: ABEC9~ABEC1; JIS: JIS~JIS0; ISO: CLASS2~NORMAL CLASS; GB/T30794 B~G
- Inquiry ways: The right of the inquiry form, Email, skype, Whatsapp
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