Connection Rod for Crankshaft Assembly Used in Drilling Pump

• Crank adopt 35CrMo material casting. 
• the big end bearing of the eccentric rod connected to the crankshaft, the small end is connected to the crosshead. 
• the rotation of the crankshaft connecting rod into reciprocating linear motion by the crosshead. 
• the main technical requirements rod big end and small end hole parallel, to ensure smooth motion