The internal sealing system of this EC290 track roller has been upgraded, boasting excellent waterproof and dustproof performance. It can effectively prevent impurities from entering, maintain internal lubrication for a long time, ensure stable operation in complex environments, and significantly extend its own service life as well as the overall service life of the equipment.We manufacture different machine models track rollers and can offer customized products. Follow us,you will get the items what you request.