crankpin






24-hour
hotline number:
+45 40 170 970

On-Site Machining of Crankpins

 

 

Damaged 2 Stroke Crankpin

It is necessary to Re-Machine radius and the journal to undersize, according to MAN Diesel or Makers drawings.

 

Damaged crankpin   Damaged journal

 

 

Re-machining by tooling (no grinding)

Re-machining of the radius and journal to it is free of cracks controlled by Magnaflux-crack test device and hardness controlled with an electronic tester.

 

Machining of radius   Machined radius   Machining of journal

 

Machined journal

 

 

Controlled, hand dressed and finally polished

Controlling of the parallel line of the journal according to the main journal by using electronic level-control and hand dressed before the final polishing. The tolerance is max. 0,15 mm per meter. The tolerance of the diameter is maximum 0,03 mm in eight positions.

 

Superfinishing of journal   Polishing of radius   Blue marking


 

The restored 2-Stroke Crankpin

The restored crankpin journal after machining, super-finishing, controlled by blue-marking, hand dressed and final polishing. The final diameter is -13mm.

 

Restored crankpin

 

 

New Tools for In-Situ Machining of 2 & 4 Stroke Crankshaft.

New tools for Re-Machining of radius / fillet according to specifikations from Maker and MAN Diesel.
• Range dia. 100mm to dia. 1080mm.
• Re-Machining of radius / fillet according to drawing (no grinding).
• Re-Machining of journals by tooling (no grinding).
• Controlled by electronic level meter.
• No misalignment.
• Standard tool for all 2 & 4 Stroke Crankpins.
• Control of journals by Blue-marking
• Frequency controlled drive.
• Preparation time reduced to few hours.
• Experienced and well trained engineers.
• Tools for machining of main journals.