The technical Parameters: Model/Parameters STT-DI STT-D II STT-QI STT-bI STT-bII STT-bIII STT-IV STT-V STT-VI Worktable size mm 820x 1200 820x 1520 350x 1000 700x 1400 800x 1500 800x 1600 900x 1800 1000x 2000 1100x 2200 Motor power W 750 750 750 550 550 550 550 550 550 Table electrically-heated power W 750 750 750 700 700 Rocker arm electrically-heated power W 500 500 250 Table air suction pressrure Pa >-150 >-150 >-150 >-150 >-150 >-150 >-150 >-150 >-150 Rocker arm air suction pressure Pa >-150 >-150 >-150 >-150 >-150 >-150 >-150 >-150 >-150 Power supply voltage V 380 380 220 220