S-74DProcesses MIG (GMAW) Flux-cored (FCAW) (gas- and self-shielded) Pulsed MIG (GMAW) with MPa Plus feeder and optional MPa power source Input Power 24 VAC, 10 A, 50/60 Hz Wire Diameter Capacity .023 – 5/64 in. (0.6 – 2.0 mm) Wire Feed Speed 50 –780 ipm (1.3 –19.8 m/min.) Net Weight Single-wire feeder: 48 lb. (21.8 kg) Dual-wire feeder: 87 lb. (39.5 kg)Heavy Industrial Applications Heavy manufacturing Metal fabrication Construction Light manufacturing 70 SeriesConstant-Speed Wire FeederIssued Oct. 2019 • Index No. M/3.0Wire feeder is warranted for three years, parts and labor.Posifeed™ wire drive assembly features24 VDC high-torque, permanent-magnet motor. Quick-change drive rolls. Quick-release, calibrated drive-roll pressure arm allows drive roll change without losing spring preload setting. Four sealed ball bearing all-gear-driven drive-roll carriers for smooth, positive and accurate wire feed with long uninterrupted service life. Easy loading and threading of welding wire with out having to release the drive-roll pressure arm. 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. 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 wires.S-74SS-74 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 versions.10-foot, 14-pin interconnecting cord for connecting to any Miller® 14-pin power source. Trigger receptacle oriented in a downward position to reduce potential damage. Trigger hold reduces operator fatigue by allowing the operator to make long welds without having to energize the trigger continuously. Dual-wire models allow two different wire types to be available on one feeder, avoiding downtime from changing spools and drive rolls.Quick SpecsMiller Electric Mfg. LLC An ITW Welding Company 1635 West Spencer Street P.O. Box 1079 Appleton, WI 54912-1079 USAMillerWelds.comEquipment Sales US and Canada Phone: 866-931-9730 FAX: 800-637-2315 International Phone: 920-735-4554 International FAX: 920-735-4125
274S and 74D Control Panels1.Voltage Display Meter 2.Wire Speed Display Meter 3.Wire Feed Speed Adjust 4.Trigger Hold 5.Voltage Adjust* 6.Jog/Purge *Optional on S-74S. See Remote Voltage Control on page 6.365*470 Series24V Wire FeederInput Power 24 VAC, 10 A, 50/60 HzWire Feed Speed 50 –780 ipm (1.3 –19.8 m/min.) Optional high-speed motor: 90 –1,440 ipm (2.3 – 36.6 m/min.)Wire Diameter Capacity .023 – 5/64 in. (0.6 – 2.0 mm) Net Weight S-74 (Single-Wire) D-74 (Dual-Wire) 48 lb. (21.8 kg) 87 lb. (39.5 kg)Dimensions S-74 (Single-Wire) D-74 (Dual-Wire) H: 14 in. (356 mm) H: 14 in. (356 mm) W: 12.5 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.)S-74S31265470 Series24V Wire FeederS-74D74S and 74D Wire Feeder FeaturesS-74S single-wire feederS-74D single-wire feederS models (basic 70 Series feeders)Wire speed control. Factory-set run-in control for improved arc starts. 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. 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 featuresDigital 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 accurate.