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Double Row Super-Precision Cylindrical Roller Bearings NNU 4926 B/SPW33

Double Row Super-Precision Cylindrical Roller Bearings NNU 4926 B/SPW33

The NNU 4926 B/SPW33 is a double-row cylindrical roller bearing with a 130mm bore and 180mm outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 42075 lbf and operates smoothly at speeds up to 5000 RPM.

Its open design allows for easy lubrication with grease or oil, while the double-row construction enhances stability under heavy loads. The bearing performs reliably in temperatures ranging from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for industrial machinery or gear systems where precision and durability are key.

Weighing 3.85kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number NNU 4926 B/SPW33
  • Size 130 mm x 180 mm x 50 mm
  • Brand TFL
  • Interchangeable brand SKF
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • Bore Type Cylindrical
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Bore Dia 130 mm
  • Bore Dia Tolerance -0.013mm to 0
  • Outer Dia 180 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 50 mm
  • Width Tolerance -0.25mm to 0
  • Chamfer Dimension Outer Ring(r1,2)(min.) 1.5 mm
  • Chamfer Dimension Inner Ring(r3,4)(min.) 1.5 mm
  • Permissible Axial Displacement(max.) 2.2 mm
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Dynamic Radial Load 42075 lbf
  • Static Radial Load 87750 lbf
  • Max Speed 5000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 3.85 kg
  • Width Annular Lubrication Groove Outer Ring(B1) 5.5 mm
  • Diameter Lubrication Hole (outer Ring) (K) 3 mm
  • Shoulder Dia Outer Ring 162 mm
  • Raceway Diameter Inner Ring 146 mm
Double Row Super-Precision Cylindrical Roller Bearings NNU 4926 B/SPW33 dimension drawing
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Features

Performance Features of NNU 4926 B/SPW33 Bearing

NNU 4926 B/SPW33 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 42075 lbf, ensuring reliable performance in demanding applications.

The double-row cylindrical design enhances stability and load distribution, reducing wear over time.
With a maximum speed of 5000 rpm, it balances durability and efficiency in high-speed operations.

NNU 4926 B/SPW33 Bearing operates smoothly in temperatures ranging from -30° to 110°C.
Its open design allows for easy lubrication with grease or oil, extending maintenance intervals.

The precise chamfer dimensions and lubrication grooves ensure consistent performance.
This makes NNU 4926 B/SPW33 Bearing suitable for heavy-duty industrial applications.

Application

Industrial Uses of NNU 4926 B/SPW33 Bearing
NNU 4926 B/SPW33 Bearing is commonly used in heavy industrial machinery, such as large gearboxes and rolling mills, where its double-row design handles high radial loads efficiently. The open seal type allows for easy lubrication, ensuring long service life in demanding conditions.

Where Is NNU 4926 B/SPW33 Bearing Used?
You’ll often find NNU 4926 B/SPW33 Bearing in precision machine tools, where its cylindrical rollers provide excellent stability under combined loads. Its chrome steel construction also makes it suitable for high-speed applications, like spindle drives.

Built for Heavy-Duty Use: NNU 4926 B/SPW33 Bearing
NNU 4926 B/SPW33 Bearing excels in applications like wind turbine gearboxes, where its robust design withstands extreme forces. The grease or oil lubrication options ensure smooth operation even in harsh environments.

Automotive vs Aerospace: Applications of NNU 4926 B/SPW33 Bearing
In automotive systems, NNU 4926 B/SPW33 Bearing supports components like differential gears, offering reliable performance under heavy loads. For aerospace, its precision makes it ideal for landing gear mechanisms, where safety is paramount.

Key Fields for NNU 4926 B/SPW33 Bearing
NNU 4926 B/SPW33 Bearing is a go-to choice for paper manufacturing equipment, where its high dynamic load capacity ensures consistent operation. The wide temperature range also makes it adaptable to various industrial settings.

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