K3
1. The wheel adopts high-precision axle steel bearing, rubber sealing ring, excellent dust-proof; the plastic-coated pulley adopts imported plastics to ensure high strength and high wear resistance in operation, running smoothly, can bear 60 kg load, and the life test can reach 100,000 times;
2. the pulley assembly adopts the riveting machine riveting technology, the pulley structure is compact and the intensity is high.
3. The pulley plate is made of high-quality cold-rolled sheet of Shanghai Baosteel with stable internal structure and high strength, and high-strength spring steel with stable performance and long service life.
4. The upper wheel is made of PU material. It runs quietly, stably and has a long service life. It can adjust the spacing and is suitable for various profiles.
5. internal damping can be passed 100 thousand times by using imported spring and oil pressure dampers.
6. innovative use of damping strength can adjust the patent structure, and door light weight can be applied.