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DUNKES DN 4

Oscillating riveting machine double riveting unit with rotary indexing table DUNKES Type DN 4
with SIEMENS control system
Machine no. P 81 - 5458 Year of manufacture 1982 / 2009
Rivet shank diameter max. 12 mm
Tool shank diameter 16 mm
Throat depth 190 mm
Rivet head stroke per riveting unit approx. 60 mm
Rivet spindle speed approx. 1,400 rpm
Mounting height tool to counter-tool max. 80 mm
Compressed air requirement 6 bar
Motor power per riveting unit 1.1 kW
Mains connection 380 Volt, 50 Hz
- Rotary table, indexing table with servo drive, step size programmable via Siemens PLC control
- Double riveting unit is adjustable on the machine frame relative to the rotary table
- Table size Ø 295 mm for holding round workpieces
- Pneumatic riveting stroke movement
- Riveting unit adjustment via gear motor with leadscrew, positioning via adjustable microswitch
- Control system upgraded and conversion to servo drive for the rotary table in 2009
- New electrical switch cabinet with Siemens Simatic Panel – 2009
- Riveting time infinitely programmable
- Rivet pressure setting infinitely variable via pressure gauge
- Micrometer stop for stroke limitation of the opposing riveting units 0-60 mm
Required floor space (L x W x H) 3200 x 1250 x 2400 mm
Weight approx. 2,500 kg
Good condition

Machine was used for riveting segment saw blades from Ø 400 to Ø 2000 mm.
The segments were manually positioned on the carrier disc and fixed with straight rivet pins.
The opposing riveting unit rivets the pin simultaneously from both sides.
The controlled table automatically rotates to the next working position.
Ideal for saw blade manufacturers and repair shops.
Or for use in building a special purpose machine.
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