长柄铁滑轮

Material: galvanized steel sheet

Inner core heat treatment

Specification: roller diameter 45MM

Axle diameter 10.5MM

Axle length: 175MM

Rank: bearing 30KG

Cycle index of door: 100,000 times

Advantages: adopts mechanical bearing

Cold resistance-45℃

Long service life, low noise

Suitable for upturning garage door

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