Making Sheet Metal Slitting Cutters

For 0.4 mm I doubt the cage is solid enough unless you are talking monster heavy duty bearings.

The shear wheels also have an angular relief - i.e. are conical - which keeps them 'in shear'.

And given the rigidity laterally required, you'd really need a precision double race.

Personally - if i couldn't buy a set wheels - I'd turn them, heat treat, grind and use a sintered bronze or permaglide bush.

10.4.11

Bearing races will be built around En31 series material, wheres slitting cutters should be around HCHCr. Cost cutting in tooling normally adds up process nuisance value later and not worth it. I would stick to virgin material of recommended specs, machine it, heat treat it ( preferably vacuum ) and grind it. If it is very expensive in the US of A, look at imports from India. The industry to make these cutters is extremely well organised.

Vinay Isloorkar