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The Digga 12DDS is a high-flow single-speed excavator auger drive for 9–12T excavators machines — delivering the torque and flow handling required for large-diameter foundation, pile, and caisson drilling. Built around Digga's compact high-torque planetary gearbox with Digga-designed Eaton motor and integrated pressure relief valve, the 12DDS eliminates bulky external valve blocks. 2-piece shaft design. HALO alignment system compatible. Warranty: 5-year gearbox / 3-year motor / lifetime shaft pull-out. Made in Dyersville, Iowa, USA by Digga.
| Specification | Value |
|---|---|
| Model | 12DDS |
| Speed | Single speed (DDS suffix = high-flow) |
| Drive | Digga Planetary drive + Eaton motor with integrated PRV |
| Shaft | 2-piece design — max side load, bearing protection |
| HALO | Compatible — optional LED plumb alignment |
| Machine Class | 9–12T excavators |
| Warranty | 5-year gearbox | 3-year motor | Lifetime shaft pull-out |
| Origin | Made in Dyersville, Iowa, USA |
Requires auxiliary hydraulic circuit on excavator. Confirm machine hydraulic output (GPM and PSI) meets drive requirements. Mounting bracket and auger bit required for full operation — sold separately.
Compatible with excavators in the 9–12T excavators class:
| Caterpillar | Komatsu | Volvo | Doosan |
| John Deere | Hitachi | Kubota | Yanmar |
Confirm excavator auxiliary hydraulic output and pin dimensions for mount compatibility before ordering.
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Q: What is the difference between 12DDS (DDS) and the DDT version?
DDS = single-speed high-flow drive. DDT = two-speed version of the same drive — allows switching between high-torque/low-speed and high-speed/lower-torque modes for different drilling conditions. For most foundation and pile drilling, DDS single-speed is standard. DDT provides additional flexibility for variable ground conditions on the same job. |
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Q: What mounting bracket do I need?
The 12DDS requires an excavator-specific mounting bracket for your machine's dipper arm pin configuration. Digga manufactures brackets for most excavator brands. |
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Q: What auger bits are compatible?
The 12DDS is compatible with Digga auger bits in the appropriate hub size for this drive class. |
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Q: How does HALO work?
HALO is an optional LED plumb alignment system that attaches to the auger drive. It uses LED lighting visible from the cab to indicate when the auger is plumb (vertical). The operator adjusts the boom until HALO indicates plumb before beginning each hole, ensuring straight foundation holes without a ground spotter. |
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Q: Can this drive be used for helical anchor installation?
The 12DDS can be converted for anchor/screw anchor use with the addition of Digga's ECV (Energy Control Valve / Anti-Kickback Valve). Using it for anchoring without an ECV voids the gearbox warranty. |
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