B-20 Hand Hold Driller

 Parameter datas:
Model   B-18 B-20
Weight kg 18 20
Length mm 550 561
Cyinder Diameter×Stroke mm 58*45 63*55
Working Pressure MPa 0.4～0.63 0.4～0.63
Impact Energy J ≥22 ≥26
Impact Ferquency Hz ≥32 ≥33
Air Consumption m3/min ≤1.2 ≤1.98

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