双飞姐妹2免费高清观看|吉吉影音看片网址|家兔养殖技术视频|警察被20爆粗进入|另类人与禽zOZZ0性伦|久久综合99熟|综合AV久久国产精品凡士林

 ↑Click the picture see larger image

       Tube D              Shaft d               Size               Chain pitch        Teeth          Chain's type   

1. Adopt sprocket made of polyamide as the driving element, so the running noise has been greatly lowed down.
2. The design makes it is able to opeate in some special environment, and not only for good looking but also further more for the smooth and quiet running.
3. It is resists dust and water splash well
4.Parameters：Bearing housing: polyamide and black；End cap: polypropylene and yellow；Precisino ball bearing: 6002；Sprocket: polyamide and black
5. Material: Steel, Zinc-plated, Stainless steel,
6. Installation method: Spring loaded, Female Thread,