ROLLING SPECIALISTS

Cold-working
products and procedures

Threads from M-MJ1.8 to M-MJ120Automatic assembly of 1-2 washers on screwsChamfered, bent or regular turnbuckles

Straightening after heat treatmentFinishing of the threadToothing (up to mod. 1,57, 30° angle)

Knurling / Grooves / LappingEndless screws / Relief grooves

SHORTNESS OF
DELIVERY TIMES

Last year’s
production

WE HAVE BEEN CERTIFIED FOR MORE THAN 20 YEARS AND QUALITY ASSURANCE AUDITS HAVE NEVER DETECTED ANY ANOMALIES.

 

The perfect thread rolling, which Giacomo Martinelli S.r.l. works for on a daily basis, does not show any imperfections. Together with my team, I constantly try to minimise the margin of error.
Efficiency is a crucial requisite when we have to manage deliveries as our customers request.

Cold-worked fasteners - 75.892.3780%
Thread rolling of turning process material - 583.5340%
Thread rolling of shearing process material - 5.8610%
Thread rolling of hot stamping process material - 72.9590%

Thread rolling

Our workings

Automatic Montage

Lapping

Recovery of damaged threads

Knurling

Straightening operations

Groovings/Splines for toothed shafts

Gorge and point/tip by cold deformations