Success stories

With over 100 machines delivered and hundreds of cylinders ground and balanced on-site around the world, our solutions are tailored to meet the specific needs of the customer. From onsite services to custom-built machines and upgrades, we help you optimize your production efficiency and product quality.

Ceramic center roll surface quality restoration

Problem: Runnability and draw problems in a paper machine
Reason: Center roll surface roughness out of tolerance
Wintech solution: The roll was superfinished by Wintech
Outcome: Surface quality was restored to the original level. All problems were eliminated

EPDM rubber roller grinding in a plastic film production machine

Problem: Plastic film did not roll smoothly, causing a lot of reject
Reason: Large diameter variation due to roll wear
Wintech solution: Three rolls were ground inside the machine. Roll dimensions were brough back to original tolerance
Outcome: Runnablity problem was solved. Downtime was minimized as there was no need to remove the rolls out of the machine for grinding

Lime kiln vibration

Problem: Major vibration which was felt even in the neighborhood disturbing nearby residents
Reason: Carrier rolls and support rings were worn out causing vibration
Wintech solution: Kiln’s four carrier rolls and both support rings were ground back to tolerance on site. Drum was realigned.
Outcome: Vibration problem was solved without need to stop the production. Such strong vibrations may cause structures to break down and eventually stop the process for a long time

Grinding and balancing a whole dryer group

Problem: Entire drying cylinder group required restoration
Reason: The cylinders had different levels of wear, rust, waviness, shape variation and imbalance
Wintech solution: Total of 37 cylinders were ground and balanced on site within agreed time
Outcome: All cylinders were brought back to original tolerances

Paper machine calender thermo roll

Problem: The calender was unable to polish the paper to the desired level, and left markings on the product
Reason: Roll surface was too rough, and had micro scratches which were visible on paper
Wintech solution: Original surface quality was restored by finishing grinding on site
Outcome: Problems were completely eliminated. Only 10 micrometers of the expensive coating was removed in the finishing extending service life of the roll

Paper machine reel drum balancing

Problem: Reel drum vibration caused runnability problems
Reason: Imbalance
Wintech solution: Reel drum was measured and found to be out of balance and diameter tolerance. Drum was ground and balanced on site
Outcome: Balancing improved by 98% on drive side and 97% on the tending side. Vibration disappeared and runnability was improved significantly

Paper machine reel drum

Problem: Reeling quality issues, vibrations during tambour change
Reason: roll wear
Wintech solution: Measuring revealed large diameter variation and waviness up to 0,15mm in diameter. Reel drum was ground in the machine during a 24h machine stop
Outcome: Runnability and quality were restored. Vibrations disappeared

Fully automatic production cell for piston pin grinding

Customer needed a solution to increase throughput and quality for piston rod grinding process
• Full production line integration
• Throughput increase 10x
• Quality increase
• Automated, autonomous operation

Automatic rod brush

Piston rods needed brushing before quality inspection
• Integrated to production control automation
• Automatic adjustment to current product (Ø20-130mm)
• Fully automated operation
• Follow-up orders ensued thanks to good performance

Hydraulic cylinder piston rod grinding station

Customer needed to increase throughput and quality for piston rod grinding
• Product range:
• Length up to 11 000mm
• Diameter up to 350mm
• Grinding control based on automatic diameter and coating thickness measurement
• Grinding and finishing

Workshop grinding machine upgrade

• 6m long PU-coated roll grinding took 40-60 hours with the original stone grinder
• Wintech belt grinder and finishing grinder were retrofitted to increase productivity
• Total grinding time dropped to 15-20 hours while quality improved
Why?
• Surface temperature remains lower using a 150mm wide grinding belt -> faster material removal
• Finishing produces final surface quality. Stone grinding leaves scratches