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Description
📘 Overview
The Digga TTD-3 is the MFT taper outer (gauge) tooth for Digga RC4 through RC10 Rock/Combination Auger Bits — the outer-edge tooth responsible for cutting the hole to final diameter and preventing the auger from binding in harder material. Featuring a heavy-duty multi-facet tungsten carbide tip that fractures shale, rock, and asphalt, the TTD-3 sits in the outer pockets of the RC auger head using the TTD-H taper lock system. 1-step knock-in/knock-out replacement. For machines up to 50 tons. OEM Digga, made in Dyersville, Iowa, USA.
⚙️ Key Features
- Part No. TTD-3 — MFT taper outer (gauge) tooth for Digga RC4-RC10
- Heavy-duty MFT carbide tip — fractures shale, rock, and asphalt
- Outer/gauge position — cuts hole to final diameter, maintains diameter in hard material
- TTD-H taper pocket
- 1-step taper knock-in/knock-out — tool-free field replacement
- Also suits: RC5, RC6, RC8, RC10 (with TTD-H holders)
- For machines up to 50T | OEM Digga | Made in Dyersville, Iowa, USA
🔑 Benefits
- Outer gauge tooth prevents the bit from losing diameter in hard material — the most common RC auger failure mode — when outer teeth wear down, the auger begins to cut oversize holes (undersized gauge, more accurately — the bit's effective cutting diameter shrinks). This causes the auger to bind in the hole as the bit diameter is no longer matching the hole wall. Timely TTD-3 replacement prevents this.
- MFT tip at the outer edge where rotational speed is highest — maximum fracturing force per revolution — the outer tooth travels the greatest distance per revolution, meaning it contacts hard material with the highest force. MFT geometry at this position maximizes fracturing efficiency where the auger's mechanical advantage is greatest.
- Taper lock provides higher retention than standard tooth systems under rock drilling vibration — rock drilling generates high-amplitude vibration that can dislodge teeth from less secure retention systems. The taper lock engages deeper into the pocket under vibration load, reducing tooth loss in demanding conditions.
- RC4-RC10 compatibility allows one part number across the full RC fleet — the TTD-3 (with TTD-H holder) fits RC4 through RC10, covering skid steer to large excavator configurations. Fleet operators running multiple RC models stock one outer tooth SKU.
📊 Specifications
| Specification | Value |
|---|---|
| Part Number | TTD-3 |
| Type | MFT taper outer (gauge) tooth |
| Position | Outer/Gauge |
| Tip Material | Heavy-duty multi-facet tungsten (MFT) |
| TTD-H taper pocket | |
| Locking | 1-step taper knock-in/knock-out |
| For Auger | RC4 through RC10 (with TTD-H holders) |
| Application | Fracturable rock, shale, asphalt, hard material |
| Machine Class | Up to 50T |
| Pairs With | TTS-3 (inner) for complete head service |
| Sold As | Each |
| Origin | Dyersville, Iowa, USA |
🔗 Attachment Compatibility
For Digga RC4 through RC10 Rock/Combination Auger Bits using TTD-H taper pockets (outer gauge positions). Not for A4 (TS system), DR series (DP system), or RC11 (uses TTL-3). Pair with TTS-3 inner teeth for complete head service.
🚜 Machine Compatibility
Outer tooth for Digga RC4-RC10 — RC4 suits skid steers and excavators up to 4.5T; larger RC series up to 50T:
| Bobcat | Caterpillar | John Deere | Case |
| Komatsu | Volvo | Hitachi | Doosan |
Machine compatibility from parent RC auger system. Confirm RC model and machine weight class before ordering.
❓ FAQs
|
Q: TTD-3 vs TTS-3 — outer vs inner?
TTD-3 is the outer (gauge) tooth — cuts the hole wall and maintains hole diameter. TTS-3 is the inner tooth — breaks up center-zone material. Both use TTD-H pockets and both are needed for complete head replacement. |
|
Q: How many TTD-3 outer teeth does my RC4 require?
Varies by diameter. Reference from rev-pile.com: 6""=2, 8""=4, 9""=4, 10""=4, 12""=5, 14""=4, 16""=4, 18""=4, 20""=4, 24""=4, 30""=3, 36""=4, 42""=4, 48""=3 TTD-3 outer teeth. Confirm with eskidsteer.com for your specific diameter. |
|
Q: Does TTD-3 suit RC5, RC6, RC8, RC10?
Yes — TTD-3 with TTD-H taper tooth holders suits RC4, RC5, RC6, RC8, and RC10. It does NOT suit RC11 (which uses TTL-3 with a different pocket). |
|
Q: What is the TTD-H holder and do I need to order it separately?
The TTD-H is the taper tooth holder (block) permanently welded into the auger head. It holds the TTD-3 (or TTS-3) tooth via taper engagement. The holder is part of the auger body — you only need to order the TTD-3 replacement tooth, not the holder, unless the holder itself is damaged. Contact eskidsteer.com if a holder needs replacement. |
|
Q: When should I replace TTD-3 outer teeth?
Replace when: visible MFT carbide wear, hole diameter starts decreasing (gauge loss), auger begins binding in the hole wall, or increased vibration in hard material. Replace outer and inner teeth as a complete set for even wear and best performance. |
📥 Downloads
Download Spec Sheet / Product Brochure (PDF)
🎥 Videos
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