Paper Industry
In recent years, the papermaking industry has been making great advances in enhancing the speed and the width of coverage of papermaking machines with the objective of boosting productivity.
To reduce the amount of downtime caused by unexpected problems, we have developed a range of bearings that meet our customers’ demands.
As one of the global technology leaders, we understand and provide solutions to the challenges found in the Paper Industry. With products specifically designed to support equipment utilised in high temperature, and highly contaminated environments, NSK's bearings allow longer life and higher limiting speeds which result in greater productivity.
Being a manufacturer and supplier of products is not enough in today’s World. That is why we see ourselves as your reliable partner, providing a broad range of support activities to help you enhance your business & bottom line.
We work together with you on-site to develop individual solutions for smooth, efficient and profitable production processes in your business.
Wire Section
Operating conditions: Moisture, water ingress and high speeds
Levels of moisture are high in the wire section. This can result in water penetration and bearing corrosion. Water ingress together with the tendency towards ever-greater speeds can lead to premature bearing failure and production stoppages.
Total Quality Solution:
NSK’s HPS™ series of bearings for very high speeds
To overcome these common problems, NSK’s HPS™ range for breast rolls and egoutteur as well as wire drive, wire guide and wire suction rolls also include components such as spherical roller bearings which have a 20% higher limiting speed and last up to twice as long compared to standard products. These bearings have a special cage design and optimised outer ring surface. Highly accurate precision grades (P55) are also available.
Our Innovations:
HPS™ Series Spherical Roller Bearings
Press
Operating conditions: Low / heavy loads and high speeds
The paper industry demands reliable operation and long service life. Press nips are subject to very heavy loads, while suction press rolls reach very high speeds – up to 2,500 m/min will be possible in the future. Choosing the wrong bearings for applications like these can quickly lead to raceway damage.
Total Quality Solution:
Spherical roller bearings for extremely high loads and speeds in shoe presses
In collaboration with a renowned supplier of equipment for paper machines, NSK has developed, tested and released spherical roller bearings with optimised internal design which are suitable for high, current and future, line speeds in shoe presses
Our Innovations:
Triple Ring Bearings
HPS™ Series Spherical Roller Bearings
Dry end
Operating conditions: Very high temperatures, high speeds, heavy loads
Temperatures of up to 150°C are common at the dry end of paper machines. They are also subject to high axial forces and tensile strain. In this demanding environment, the bearing inner ring can crack, causing machine downtime.
Total Quality Solution:
TL series spherical roller bearings for high temperatures
NSK’s TL (“Tough & Long life”) series was developed specifically for drying rolls in paper making machines, which run at very high temperatures. Together with special heat treatment, the chemical composition of the steel used makes the inner and outer rings extremely resistant to wear and cracking. This can dramatically reduce downtime and maintenance costs.
Our Innovations:
TL Series Spherical Roller Bearings
Cylindrical Roller Bearings with Aligning Rings
HPS™ Series Spherical Roller Bearings
Calender
Operating conditions: High temperatures, extremely high speeds, heavy loads
Calender rollers are subject to heavy loads and high speeds which can rapidly cause spherical roller bearings to fatigue. Expansion of the bearing inner ring due to heat can lead to cracks which ultimately result in machinery failure.
Total Quality Solution:
TL RUB bearings with enhanced running accuracy for high speed and high temperature operation
Thanks to their improved running accuracy and resistance to temperatures up to 200°C, NSK TL RUB bearings are the ideal floating bearing solution for these demanding conditions and future performance upgrades. The bearings’ design enables the calender rolls to expand thermally with no restraints.
Our Innovations:
TL Series Spherical Roller Bearings
Cylindrical Roller Bearings with Aligning Rings
HPS™ Series Spherical Roller Bearings
Triple Ring Bearings
