Tooling solutions for machining connecting rods

The connecting rod transfers the linear movement from the pistons to rotate the crankshaft. It is under tremendous stress from the reciprocating load and is stretched and compressed with every rotation. This load increases with the square as the engine speed increases. These days, the big eye is normally cracked, versus the earlier method of parting off with a milling cutter. If the big eye is cracked, it may be pre-machined with a laser crack that puts high demand on the following boring process.
The manufacturing process of connecting rods has to be precise regarding key tolerances and at the same time cost-efficient.
Besides our extensive offer, Sandvik Coromant also has dedicated products and Engineered solutions that fully support overtaking the challenges that manufacturing these components presents.
Tooling solutions that support manufacturing connecting rods:
CoroTap™ 400
CoroTap 400 is a high-speed, chip-free forming tap suitable for both through- and blind-holes in steel, stainless steel, aluminium and HRSAs. Versatile and optimized forming taps are available, with and without oil grooves, in an assortment of diameters, grades, coatings and thread forms to suit a range of applications.

CoroBore® 826 HP – Fine boring tool with excellent chip control
CoroBore® 826 HP is the First Choice for all fine boring operations. With the unique high-precision coolant directed to the cutting edge, CoroBore® 826 HP ensures excellent chip control and chip evacuation.
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CoroBore® BR – Rough boring tools
For optimized boring, general boring, large diameter and lightweight boring. Damped tools are available to eliminate vibration when machining with long overhangs.
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CoroDrill® 880 indexable drill
CoroDrill® 880, with its unique insert geometries and configuration, creates a balanced, step-by-step entrance into the workpiece. This reduces cutting forces to less than half that of typical insert drills and virtually eliminates deflection on entry.
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CoroMill® 327 groove and thread milling cutters
A versatile cutter that can be used for many types of grooves, threads, and chamfers; machining of eccentric components, such as gearbox casings and high volume assemblies.
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* For Engineered tooling solutions, please contact your local Sandvik Coromant sales representative.
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