Main technical character 1,locking diameter(inch):φ1/4"-1-1/4" 2,Max locking force:260T 3,oil pump out-let quantity:30ml/rad 4.,dimension:630*400*460mm 5,Weight:100Kg 6,size model:JKS200-B 7,hydraulic oil: Summer YB-N46
This model uses the oil pump, not pnuematic pump. It is steady than pnuematic pump.