... 900mm 3.Auto feeding, clamping, grinding and knurling 4.PLC Features 1.Knurle and grind the product for good finish,2 ... high stability & efficiency,3. Automately feeding, clamping, grinding and knurling.4. Grinding range in 50mm-900mm.5. A djustable ... materials, aluminum, copper, etc.6. Independent dust removal system to effectively remove the debris and dust7. Enclosed framework for good environment ...