70 Series - Miller - Welding Equipment

1 S-74 DProcesses MIG (GMAW) flux -cored (FCAW) (gas- and self- shielded ) Pulsed MIG (GMAW) with MPa Plus feeder and MPa power source Input Power 24 VAC, 10 A, 50/60 Hz Wire Diameter Capacity .023 5/64 in. ( mm) Wire Feed Speed 50 780 ipm ( m/min.) Net Weight Single-wire feeder: 48 lb. ( kg) Dual-wire feeder: 87 lb. ( kg)Heavy Industrial Applications Heavy manufacturing Metal fabrication Construction Light manufacturing 70 SeriesConstant-Speed Wire FeederIssued June 2021 Index No. feeder is warrantied for three years, parts and wire drive assembly features 24 VDC high-torque, permanent-magnet motor.

2 Quick-change drive rolls. Quick-release, calibrated drive-roll pressure arm allows drive roll change without losing spring preload setting. Easy loading and threading of Welding wire with out having to release the drive-roll pressure arm. Four sealed ball bearing all-gear-driven drive-roll carriers for smooth, positive and accurate wire feed with long uninterrupted service life. Solid-state speed control and brake circuit eliminates the need for electrical/mechanical relays and increases service life. Uses Miller standard 1-5/8 inch (41 mm) diameter drive rolls. Quick-connect for all Miller guns.

3 Covered drive rolls easy access, heavy-duty, molded composite cover over drive assembly. Floating positive drive systems provide trouble-free feeding on a variety of MPa PlusModels: 74S: Standard, basic design 74D: Digital meters 74 MPa Plus: Digital, full-feature with push-pull capabilityFor MPa Plus feeders only! XR-Aluma-Pro Plus and XR -Pistol Plus push-pull guns for aluminum. Comes in 15- and 25-foot lengths for extended reach with trouble-free, reliable feeding. Gun is available in either air- or water-cooled models allow two different wire types to be available on one feeder, avoiding downtime from changing spools and drive rolls.

4 Toolless rotatable drive assembly allows operator to rotate drive housing, allowing a straight path for wire flow. Accu-Mate properly seats the MIG gun power pin for best feeding performance. Trigger receptacle oriented in a downward position to reduce potential SpecsMiller Electric Mfg. LLC An ITW Welding Company 1635 West Spencer Street Box 1079 Appleton, WI 54912-1079 Sales US and Canada Phone: 866-931-9730 FAX: 800-637-2315 International Phone: 920-735-4554 International FAX: 920-735-4125274S and 74D Control Display Meter Speed Display Meter Feed Speed Adjust Hold Adjust* *Optional on S-74S.

5 See Remote Voltage Control on page *470 Series24V Wire FeederInput Power 24 VAC, 10 A, 50/60 Hz Wire Feed Speed 50 780 ipm ( m/min.) Optional high-speed motor: 90 1,440 ipm ( m/min.)Wire Diameter Capacity .023 5/64 in. ( mm) Net Weight S-74 (Single-Wire) D-74 (Dual-Wire) 48 lb. ( kg) 87 lb. ( kg)Dimensions S-74 (Single-Wire) D-74 (Dual-Wire) H: 14 in. (356 mm) H: 14 in. (356 mm) W: in. (318 mm) W: 21 in. (533 mm) D: 28 in. (711 mm) D: 35 in. (889 mm)74S and 74D Specifications (Subject to change without notice.)(Use with CV, DC power sources.)

6 S-74S31265470 Series24V Wire FeederS-74D74S and 74D Wire Feeder FeaturesS-74S single-wire feederS-74D single-wire feederS models (basic 70 Series feeders) Trigger hold reduces operator fatigue by allowing the operator to make long welds without having to energize the trigger continuously. Wire speed control. Factory-set run-in control for improved arc starts. 10-foot, 14-pin interconnecting cord for connecting to any Miller 14-pin power source. 24 VDC high-torque, permanent-magnet motor. Quick-change drive rolls. Quick-release, drive-roll pressure arm allows drive roll change without losing spring preload setting.

7 Solid-state speed control and brake circuit for increased service life. Floating positive drive systems provide trouble-free feeding on a variety of wires. D models add the following features Digital meters for easy viewing of the wire feed speed and voltage. Remote voltage control allows operator to set voltage at the wire feeder without having to go back to the power source. Tachometer feedback to help keep wire feed speed *Wire kit 230708 is required to run 1/16 in. ( mm) aluminum wire on XR-Aluma-Pro Plus guns and XR -Pistol Plus MPa Plus Wire Feeder Features216845391011RO17RO21RO16 PURGEJOGPROGRAMRIGHTLEFTLR1234 PWire FeederD-74 MPa Plus774 MPa Plus Specifications (Subject to change without notice.)

8 MPa Plus models have the features of the S and D models and add the following Adjustable run-in control for improved arc starts. Dual schedule, trigger dual schedule and trigger program select allows operator to switch Welding parameters without readjusting machine, eliminating downtime and enhancing quality. Trigger schedule select allows the operator to select the alternative schedule by quickly tapping the gun trigger when not Welding . When optimized with MPa power sources the operator can also switch from MIG to pulsed MIG. Sequence control gives the operator the ability to adjust all of the Welding parameters: preflow, run-in, weld time, crater, burnback and postflow.

9 Welding process range control locks parameters at a set percentage of Welding parameters to ensure Welding proce dures and quality standards are maintained on the shop floor. Four weld programs allow the operators to store four independent Welding parameters reducing Welding setup time. (Four programs available per side on dual-wire feeder.) Push-pull capability provides consistent, versatile and dependable aluminum wire feeding over greater distances. Synergic pulsed MIG operation with MPa power supplies. Provides communication between the power source, feeder and gun. As wire speed increases/decreases, the pulse parameters also increase/decrease to match the right amount of power needed.

10 Profile Pulse provides TIG appearance with MIG simplicity and productivity. Achieve stacked dime weld bead appearance without back-stepping. Profile Pulse frequency can be changed to increase or decrease the spacing between the ripple pattern to achieve the desired weld appearance. 74 MPa Plus Control PanelsD-74 MPa PlusS-74 MPa Plus single-wire feederD-74 MPa Plus dual-wire feeder(Use with CV, DC power sources.) Input Power 24 VAC, 10 A, 50/60 Hz Wire Feed Speed 50 780 ipm ( m/min.) Wire Diameter Capacity* .023 5/64 in. ( mm) .035 1/16 in. ( mm) aluminumNet Weight S-74 MPa Plus D-74 MPa Plus (Single-Wire) (Dual-Wire) 48 lb.