Dong Il

Dong Il DIR Series 2-Die Rolling Machines

Model DIR-15 to DIR-100

Oil-pressure 2-die thread rolling machines from 15 to 100 tons for general screws, worm screws, serrations, knurling and burnishing. Supplied in North America by Cinco Industries.

Dong Il DIR-15 2-die thread rolling machine with grey base, control panel on top and two roll dies at the center

DIR series models compared

Eight DIR models cover 15 to 100 tons of rolling force. All are oil-pressure machines with a maximum elongation of 10%.

Model Max rolling force (ton) Max outside diameter (mm) Max length (mm) Max pitch (mm) Main spindle motor (kW) Weight (kg)
DIR-15 155015043.72,200
DIR-20 207515055.53,500
DIR-30 30751505114,000
DIR-40 4011020010154,600
DIR-50 5012020010196,000
DIR-60 6013020010227,500
DIR-80 80200250103010,000
DIR-100 100200 to 2302501037.511,000

Figures from Dong Il product data. Confirm the model for your part with Cinco before ordering.

Choosing a DIR model

Match the model to the part. The DIR-15 suits general screws, small precise screws, small worm screws and knurling. The DIR-20 and DIR-30 add worm screws, serrations, knurling and burnishing. The DIR-40 and larger models roll worm screws, TM screws, stopper screws and all kinds of screws.

Dong Il offers its 2-die machines in automatic configurations: a 15-ton auto with 3-axis servo, gantry auto, lift-and-carry gantry auto and through-feed auto. Cinco also supplies dies and tooling for these machines. Machines are built to order, and lead time depends on the machine and configuration.

Looking at other Dong Il machines? See all Dong Il thread rolling machines.

Request a DIR series quote

Tell us the part material, thread or geometry, dimensions, volume and target rate, and we will help you choose a DIR model.