SX-820 Fully Automatic Transfer line for â Bonellâ Type innerspring unit is latest model for produce â Bonellâ type innerspring units directly from wire. Firstly the steel wire is coiled to a spring, and then transferred and inserted to the assembler by the automatic feeding system. After this , the upper and lower springs are coiled together at the same time and helical wire is coiled , cut and clamped at both ends automatically. When a unit is finished, it could be ejected automatically. Technical Data Spring Type Bonell Capacity 80 Sheets/ 8 Hours ( 1800MM* 2000MM) Max Width 2M Spring End Ring ¦ 65-¦ 90MM Steel Wire Gauge ¦ 1.9-¦ 2.4MM Spring Height 100-180MM Convolutions 4-7 Turns Total Power 10 KVA Weight Net Approx: 5355KG Power Requirement 380V, 3 Phase, 50-60HZ ( Option: 415V-480V, 220V)