What are Motorcycle Chains and Sprockets? Every chain-driven motorcycle has two sprockets. One sprocket connects to the engine and is called the front sprocket; the other sprocket is fixed to the rear wheel and is called the rear sprocket. The chain connects the front and rear sprockets. When you turn the throttle to accelerate, the […]

One of the most common questions when choosing ball bearings is whether to select a 2RS sealed bearing or a ZZ dust cover bearing.

Ball bearings play an essential role in the smooth and efficient operation of a car.Whether you need wheel bearings, deep groove ball bearings, or custom bearing solutions, DFL NSAR is your reliable partner for quality and value.

In every piece of industrial equipment, bearings and seals play a critical role in ensuring smooth motion, long service life, and high efficiency.As a professional bearing manufacturer and supplier, DFL NSAR.

Needle bearings, also known as needle roller bearings, are essential components in many industrial and automotive systems. For technical support or bulk purchase inquiries, contact DFL NSAR — your trusted needle bearing manufacturer and supplier.

Bearings are the heart of every machine. From automotive systems to industrial motors, bearing reliability determines the efficiency of equipment. However, even the best-quality bearings can fail prematurely if not properly maintained.