NTN NK17/20R Needle Roller Bearing - 17x25x20 mm, Without Inner Ring

NTN NK17/20R Needle Roller Bearing - 17x25x20 mm, Without Inner Ring

The NTN NK17/20R is a precision-engineered needle roller bearing with dimensions 17 mm (bore) x 25 mm (OD) x 20 mm (width). Designed without an inner ring, this bearing allows the shaft to serve as a raceway, providing a compact and lightweight solution for high-performance applications.

This model is frequently searched globally using phrases such as:
NTN NK17/20R bearing, needle roller bearing 17x25x20, NK17/20 no inner ring bearing, high radial capacity needle bearing, and NTN NK17/20 R heavy duty bearing.

🔍 Key Specifications:

• Brand: NTN

• Model: NK17/20R

• Bearing Type: Needle Roller Bearing

• Bore Diameter: 17 mm

• Outside Diameter: 25 mm

• Width: 20 mm

• Design: Without inner ring

• Load Capacity: High radial load resistance

• Configuration: Single row, open type

• Cage Material: Steel

🚀 Advantages:

• Compact design - ideal where space is limited

• No inner ring - allows direct use of the shaft as raceway

• Lightweight, robust, and durable - made for industrial-grade applications

• High radial load capacity - handles intense mechanical stress

• Original NTN quality - trusted in automation, automotive, and manufacturing

📦 Typical Applications:

• Gearboxes and transmissions

• Printing and textile machinery

• Agricultural equipment

• Automotive systems

• General industrial powertrains

❓ FAQ - Frequently Asked Questions

Q: What does "NK17/20R" stand for?
A: It refers to a needle roller bearing with 17 mm bore, 25 mm OD, 20 mm width, and no inner ring.

Q: Can I use it on a hardened shaft?
A: Yes. This bearing is designed to run directly on a hardened and ground shaft surface.

Q: Is lubrication required?
A: Yes. Regular greasing or oiling depending on your application improves performance and lifespan.

Q: What is the operating temperature range?
A: Standard: -20°C to +120°C; consult for higher-temp variants.

Q: Is this a high-speed bearing?
A: It is suitable for moderate speeds with high radial loads.