+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
Double Row Super-Precision Cylindrical Roller Bearings NNU 4928 B/SPW33

Double Row Super-Precision Cylindrical Roller Bearings NNU 4928 B/SPW33

The NNU 4928 B/SPW33 is a double-row cylindrical roller bearing with a 140mm bore and 190mm outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 42750 lbf and runs smoothly at speeds up to 5000 RPM.

Its open design allows for easy lubrication with grease or oil, while the double-row construction provides added stability. The bearing operates well in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for heavy-duty applications like machine tools or industrial gearboxes where precision and durability are key.

Weighing 4.1kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and reliable use.

Get A Free Quote
    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number NNU 4928 B/SPW33
  • Size 140 mm x 190 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 140 mm
  • Bore Dia Tolerance -0.013mm to 0
  • Outer Dia 190 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 42750 lbf
  • Static Radial Load 90000 lbf
  • Max Speed 5000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 4.1 kg
  • Width Annular Lubrication Groove Outer Ring(B1) 5.5 mm
  • Diameter Lubrication Hole (outer Ring) (K) 3 mm
  • Shoulder Dia Outer Ring 172 mm
  • Raceway Diameter Inner Ring 156 mm
Double Row Super-Precision Cylindrical Roller Bearings NNU 4928 B/SPW33 dimension drawing
Download DWG Download PDF

Features

Performance Features of NNU 4928 B/SPW33 Bearing

NNU 4928 B/SPW33 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 42750 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 4928 B/SPW33 Bearing operates smoothly in temperatures ranging from -30° to 110°C.
Its open design allows for flexible lubrication options, either grease or oil, to suit different conditions.

The precise tolerances and chamfer dimensions ensure easy installation and alignment.
This bearing is ideal for applications requiring high precision and long service life.

Application

Industrial Uses of NNU 4928 B/SPW33 Bearing
NNU 4928 B/SPW33 Bearing is commonly used in heavy industrial machinery like rolling mills and gearboxes, where its double-row design handles combined radial and axial loads efficiently. The open seal type allows for easy lubrication, extending service life in demanding conditions.

Where Is NNU 4928 B/SPW33 Bearing Used?
In automotive manufacturing, NNU 4928 B/SPW33 Bearing supports high-precision components such as transmission systems and drivetrains. Its chrome steel construction ensures durability even under continuous high-speed operation.

Built for Heavy-Duty Use: NNU 4928 B/SPW33 Bearing
For automation equipment, NNU 4928 B/SPW33 Bearing provides reliable performance in robotic arms and CNC machines. The precise tolerances and grease lubrication options make it suitable for long-term use without frequent maintenance.

Medical vs Industrial: Where NNU 4928 B/SPW33 Bearing Excels
In medical imaging devices, NNU 4928 B/SPW33 Bearing offers smooth rotation and stability, critical for accurate diagnostics. Meanwhile, in industrial settings, its high load capacity makes it ideal for heavy machinery like presses and conveyors.

Key Fields for NNU 4928 B/SPW33 Bearing
NNU 4928 B/SPW33 Bearing is a go-to choice for wind turbine applications, where its ability to handle dynamic loads ensures consistent performance. The wide temperature range also makes it adaptable to various environmental conditions.

Q&A

SEND INQUIRY