NTN 7E-HKS33X38X8 Needle Roller Bearing (33x38x8 mm)

Applications in Industrial and Powertrain Systems

The NTN 7E-HKS33X38X8 is a compact drawn-cup needle roller bearing designed for high load capacity in limited installation spaces. With dimensions 33 mm (ID) x 38 mm (OD) x 8 mm (Width), it is widely used in powertrain components, precision machinery, pumps, gear mechanisms, and motorcycle transmissions where minimal radial space and maximum durability are essential. Its architecture without an inner ring allows direct use of the shaft surface as the raceway, making it ideal for lightweight assemblies and high-speed rotational elements.

Key Advantages of the Drawn-Cup Needle Bearing Design

This needle roller bearing features a thin-walled, pressed-steel outer cup, providing both structural rigidity and weight reduction. The optimized needle cage ensures uniform load distribution, reduced friction, and increased operational life.
In industrial conditions, the bearing delivers high durability, stable performance under continuous radial loads, and reliable operation even in constrained designs. Its efficiency makes it a preferred choice in technical sealing assemblies, industrial powertrains, and compact mechanical units where resistance to wear and long service life are priorities.

Technical Data

• Manufacturer: NTN

• Model: 7E-HKS33X38X8

• Type: Drawn-cup needle roller bearing (without inner ring)

• Inner Diameter (ID): 33 mm

• Outer Diameter (OD): 38 mm

• Width: 8 mm

• Cage: Steel

• Operating Temperature: approx. -20 °C to +120 °C

• Typical Use: Industrial machinery, motorcycle transmissions, pumps, gear systems

This configuration provides excellent reliability in demanding environments, particularly where compactness, high load capacity, and precise rotation are required.

FAQ

1. Does this bearing include an inner ring?
No. The 7E-HKS33X38X8 is a drawn-cup type without an inner ring, allowing direct shaft contact.

2. What industries commonly use this bearing?
Industrial machinery, power transmission equipment, motorcycles, and compact mechanical systems.

3. What are the benefits of the drawn-cup design?
It saves space, reduces weight, increases load capacity, and allows flexible integration with thin-walled housings.

4. Can this bearing operate under continuous load?
Yes. Needle rollers provide high radial load capacity and excellent wear resistance.

5. Is this bearing suitable for high-speed rotation?
Yes—provided the shaft raceway quality meets NTN specifications.