Basing upon its 50 year-experience EQM has developed a unique technology in the world applied to the production process of crankshafts for straw-walkers. Our quality guarantees the utmost accuracy of the geometries drawn by the customers as well as a very high N/mm2 endurance strength.
The manufacturing process guarantees defective PPM to be lower than 1.000 (0,1%).

Shaft with 5 cranks with cataphoresis treatment
Customer: Laverda

Shaft with 8 cranks
Customer: Claas

Shaft with 6 cranks with pressed washers with shot-peening treatment
Customer: Jonh Deere

Shaft with 5 cranks with welded washers
Customer: Sampo

Technical Features

Shafts up to 8 cranks
Length up to 2.800 mm
Bar diameter up to 45 mm
Strokes up to 170 mm

Management of the production cycle

Hot bending by step
Pressing or welding of washers
Turning, keywaying and grinding of shaft ends
Surface treatments, shot-peening, heat treatments
Assembly of bearings and supports
Painting: liquid coating or cataphoresis
Dimensional check by DEA coordinates measuring machine

Production in lots of 500 up to 10.000 pcs/year

Shipments all over the world

Crankshafts