... spring coiling machine is used for producing bonnell spring of mattress,sofa,furniture,cushion. This mattress bonnel spring coiler machine consists of following systems: wire delivery, spring coiling, spring ... Power33KWWire Diameter(Φ2.0~Φ2.4)mmSpring Height120~200mmSpring End-Coil Diameter(Φ65~Φ90)mmWire BobbinMin ID: 350mm; Max OD: 1000mmMain Machine Weight2800kg