+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
Double Row Super-Precision Cylindrical Roller Bearings NNU 49/670 BK/SPW33X

Double Row Super-Precision Cylindrical Roller Bearings NNU 49/670 BK/SPW33X

The NNU 49/670 BK/SPW33X is a double-row cylindrical roller bearing with a large 670mm bore and 900mm outer diameter, built from sturdy chrome steel. It handles combined loads up to 1113750 lbf and runs smoothly at speeds up to 1000 RPM.

Its open design allows for easy lubrication with grease or oil, while the tapered bore ensures a secure fit. The bearing operates well in temperatures from -30°C to 110°C.

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

Weighing 410kg, it’s built to last and complies with RoHS and REACH standards for safe use. The double-row design provides extra stability under heavy radial loads.

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

Product Parameters

  • Part Number NNU 49/670 BK/SPW33X
  • Size 670 mm x 900 mm x 230 mm
  • Brand TFL
  • Interchangeable brand SKF
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • Bore Type Taper 1:12
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Bore Dia 670 mm
  • Bore Dia Tolerance 0 to +0.065mm
  • Outer Dia 900 mm
  • Outer Dia Tolerance -0.050mm to 0
  • Width 230 mm
  • Width Tolerance -0.75mm to 0
  • Chamfer Dimension Outer Ring(r1,2)(min.) 6 mm
  • Chamfer Dimension Inner Ring(r3,4)(min.) 3 mm
  • Permissible Axial Displacement(max.) 6 mm
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Dynamic Radial Load 1113750 lbf
  • Static Radial Load 3082500 lbf
  • Max Speed 1000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 410 kg
  • Width Annular Lubrication Groove Outer Ring(B1) 22.3 mm
  • Diameter Lubrication Hole (outer Ring) (K) 12 mm
  • Shoulder Dia Outer Ring 821.2 mm
  • Raceway Diameter Inner Ring 738 mm
Double Row Super-Precision Cylindrical Roller Bearings NNU 49/670 BK/SPW33X dimension drawing
Download DWG Download PDF

Features

Performance Features of NNU 49/670 BK/SPW33X Bearing

NNU 49/670 BK/SPW33X Bearing is built with chrome steel rings and rollers, offering high resistance to combined loads.
Its dynamic radial load capacity reaches 1,113,750 lbf, making it suitable for heavy-duty applications.

The double-row cylindrical design ensures stability and precision in demanding conditions.
With a maximum speed of 1,000 rpm, it balances performance and durability.

NNU 49/670 BK/SPW33X Bearing operates efficiently in temperatures ranging from -30° to 110°C.
Its open seal type allows for easy lubrication with grease or oil, reducing maintenance needs.

The tapered bore design simplifies installation and ensures secure fitting.
This bearing’s robust construction makes it a reliable choice for industrial applications.

Application

Industrial Uses of NNU 49/670 BK/SPW33X Bearing
NNU 49/670 BK/SPW33X Bearing is commonly used in heavy industrial machinery, such as large lathes and rolling mills, where its double-row design handles combined loads efficiently. The tapered bore ensures a secure fit, reducing slippage during high-speed operations.

What Makes NNU 49/670 BK/SPW33X Bearing a Preferred Choice?
In wind turbine systems, NNU 49/670 BK/SPW33X Bearing provides reliable support for rotor shafts, thanks to its high dynamic radial load capacity. The chrome steel construction also offers excellent durability in harsh outdoor conditions.

Built for Heavy-Duty Use: NNU 49/670 BK/SPW33X Bearing
For mining equipment, NNU 49/670 BK/SPW33X Bearing excels in conveyor systems, where its open design allows for easy lubrication. The large bore diameter makes it suitable for heavy-duty applications requiring robust performance.

Automotive vs Aerospace: Applications of NNU 49/670 BK/SPW33X Bearing
In aerospace, NNU 49/670 BK/SPW33X Bearing is used in landing gear systems, where precision and reliability are critical. Meanwhile, in automotive manufacturing, it supports large presses and stamping machines with consistent performance.

Key Fields for NNU 49/670 BK/SPW33X Bearing
NNU 49/670 BK/SPW33X Bearing is ideal for paper mill machinery, where its high static radial load capacity ensures stability during production. The grease or oil lubrication options also make it adaptable to different operational environments.

Q&A

SEND INQUIRY