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Product details
A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles. Ordinary roller bearings' rollers are only slightly longer than their diameter, but needle bearings typically have rollers that are at least four times longer than their diameter. Like all bearings, they are used to reduce the friction of a rotating surface.
Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load. They are also thinner, so they require less clearance between the axle and the surrounding structure.
Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes
About us
Hebei Zengshan Intelligent Technology Co., Ltd. is a professional manufacturer of CNC machine tools, paper tube equipment, papermaking machinery, corrugated box equipment, and coating machinery. In 1990, we jointly produced textile tubes and spiral tubes with Taiwan Haoli Company. In 1992, we developed and launched a complete set of semi-automatic cone paper tubes and spiral paper tubes equipment. With advanced processing technology, processing methods, excellent product quality, and comprehensive services, our -products are sold to various parts of the country.-
In 2006, based on advanced technologies from Germany, South Korea, and other foreign countries, the QZD-68 fully automatic cone paper tube production line was developed. This machine adopts new technologies and processes of mechatronics integration, achieving the production of low labor, low energy consumption, high efficiency, and high-quality cone paper tubes.
In 2018, through communication and discussion- with numerous domestic customers, combined with international advanced experience, improvements and commissions were made to the original equipment. A new fully automatic conical paper tube production line ZSZ-2018 was launched, further improving the utilization rate of raw materials and gaining unanimous recognition from customers.
We have nearly thirty years of experience in mechanical manufacturing and processing.
We have nearly 20 years of experience in the production of paper and yarn tubes.
We provide you with excellent complete equipment and rich industry experience.
Quality is like a mountain, reputation is like a mountain, and commitment is like a mountain!
Main product
Paper cone machine
Paper tube machine
Corrugated carton machine
Paper cone making machine
Fireworks paper cone machine
Textile paper cone machine
Parallel paper tube making machine
ZK-24 Gantry type drilling and tapping machine
High speed gantry type CNC drilling machine
CNC boring and milling machine
Intelligent production line
Manipulator
Robot
Audited Supplier 
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