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50-60cm high, 18-20cm diameter top support

50-60cm high, 18-20cm diameter top support

Top support, the building is used for the bottom and top support of scaffolding. Both the top support and the bottom support are the integrity of the adjustable screw rod. The screw rod is composed of a screw, a nut, a steel ball, a pre-com

      Top support, the building is used for the bottom and top support of scaffolding.  Both the top support and the bottom support are the integrity of the adjustable screw rod. The screw rod is composed of a screw, a nut, a steel ball, a pre-compression piece, a reverser, and a dustproof device.  Its function is to convert rotary motion into linear motion, which is a further extension and development of Akem screw. The important meaning of this development is to change the bearing from sliding motion to rolling motion.