NKS 37 NTN Needle Roller Bearing 37x52x22

NKS 37 NTN Needle Roller Bearing Without Inner Ring 37x52x22

NKS 37 NTN is a professional machined needle roller bearing without inner ring designed for applications requiring very high radial load capacity with limited installation space. The 37x52x22 mm construction allows operation under heavy dynamic loading conditions in gearboxes, pumps, compressors and industrial drive systems.

The design without an inner ring allows direct use of a hardened and precision machined shaft surface as the bearing raceway. This solution increases shaft rigidity, allows larger shaft diameter and reduces the overall dimensions of the bearing assembly.

NTN needle roller bearings use slender cylindrical rollers with a large length-to-diameter ratio, providing significantly higher radial load capacity compared with standard deep groove ball bearings of similar external dimensions. The machined outer ring improves mechanical strength and stable operation under dynamic loading conditions.

The NKS 37 NTN bearing is commonly used in:

• industrial gearboxes
• hydraulic pumps
• compressors
• production machinery
• agricultural equipment
• industrial drive systems
• conveyor equipment
• applications requiring high radial load capacity

The phrase NKS 37 NTN 37x52x22 needle roller bearing without inner ring is frequently searched in industrial maintenance environments and compact bearing assembly applications.

Construction and operating characteristics

The NKS 37 NTN bearing is designed for operation under heavy radial loads in compact mechanical systems.

Main construction features:

• needle roller construction
• design without inner ring
• machined outer ring
• high radial load capacity
• compact design
• suitable for high rotational speed
• increased shaft rigidity
• long operational lifespan

The construction without inner ring allows larger shaft diameter and reduced assembly dimensions.

Technical specification

Type: Needle roller bearing without inner ring

Designation: NKS 37

Manufacturer: NTN

Bearing type: Machined needle roller bearing

Construction: Bearing without inner ring

Sealing: Open bearing without seals

Inner diameter: 37 mm

Outer diameter: 52 mm

Width: 22 mm

Radial clearance: CN

Precision class: P0

Dynamic load rating: 26.3 kN

Static load rating: 41 kN

Grease lubrication speed limit: 7500 rpm

Oil lubrication speed limit: 11000 rpm

Operating temperature range: -20°C to 120°C

Weight: Approx. 0.123 kg

Load type: High radial loads

Applications: Gearboxes, pumps, compressors, industrial machinery, agricultural equipment, drive systems

FAQ

What does bearing without inner ring mean?

The bearing directly uses the shaft surface as the raceway for the needle rollers.

What are the advantages of NTN needle roller bearings?

NTN needle roller bearings provide very high radial load capacity with compact external dimensions.

Does the shaft require special preparation?

Yes. The shaft surface should be hardened and precision ground because it acts as the bearing raceway.

What are the load ratings of NKS 37 NTN?

The dynamic load rating is 26.3 kN and the static load rating is 41 kN.

Where are NKS needle roller bearings commonly used?

They are commonly used in gearboxes, pumps, compressors and industrial drive systems.