Soilmec drilling rigs SR-35 Blue Tech Plus and SR-45 Blue Tech Plus feature intelligent hydraulics, reducing fuel use by 30% and delivering 103,995 – 136,447 lb-ft of torque. These Soilmec drilling rigs enable rapid Kelly-to-CFA switching, deeper piles, and sustainable operations, making them perfect for foundation contractors seeking high productivity and low emissions.
Foundation contractors face constant pressure to drill deeper piles, switch methods quickly, and control operating costs — especially fuel consumption. The Soilmec SR-35 Blue Tech Plus and SR-45 Blue Tech Plus address these challenges with intelligent hydraulics, powerful torque output, and unmatched versatility.
With up to 30% fuel savings, half-day Kelly-to-CFA conversions, and advanced digital monitoring systems, these rigs represent the next generation of foundation drilling technology.
What are the Soilmec SR-35 and SR-45 Blue Tech Plus?
Previewed at CONEXPO 2026 in Las Vegas, the SR-35 Blue Tech Plus and SR-45 Blue Tech Plus represent the evolution of a drilling rig platform trusted by contractors worldwide.
For more than 30 years, Soilmec’s 30-ton class drilling rigs have tackled demanding projects across the globe — from frozen ground conditions in North America to dense urban construction sites and even historic restoration projects like the Leaning Tower of Pisa.
With more than 1,500 rigs in operation globally, the SR-series has built a reputation for reliability, performance, and adaptability.
SR-35 Blue Tech Plus
The SR-35 Blue Tech Plus is designed for contractors who need compact power and job site agility. Its tight tail-swing radius and manageable transport weight allow it to work efficiently in urban environments or on restricted jobsites.
SR-45 Blue Tech Plus
The SR-45 Blue Tech Plus is engineered for larger infrastructure projects, delivering higher torque, deeper drilling capabilities, and the versatility to handle demanding ground conditions.
Both rigs incorporate Soilmec’s Blue Tech Plus hydraulic technology, which intelligently manages hydraulic flow to maximize performance while minimizing fuel consumption and emissions.
Key technical specifications and innovations
SR-35 Blue Tech Plus highlights
- Transport Weight (with Kelly Bar): 80,689 LBS*
- Torque: 103,995 lb-ft (141 kNm) max*
- Main Winch Line Pull – 31475 lbf
- Max Piling Diameter (above the mast): 59 IN*
- Max Piling Diameter (below the mast): 118 IN*
- Max Pile Depth/Locking Kelly Bar: 150 FT
- Max Pile Depth-friction Kelly/Locking Kelly (Ratholer version) 167 FT
- DMS Standard
SR-45 Blue Tech Plus highlights
- Transport Weight (with Kelly Bar): 94,357 LBS*
- Torque: 136,447 lb-ft (184 kNm) max*
- Crowd Force WCS – Push and pull force 53,953 lbf
- Max Piling Diameter (above the mast): 55 in
- Max Piling Diameter (below the mast): 118 in
- Max Pile Depth/Locking Kelly Bar: 171 ft
- Max Pile Depth-friction Kelly/Locking Kelly (Ratholer version) 213 ft
- DMS Standard
Step-by-step setup and operation
1. Rapid mobilization and positioning
The SR-35 and SR-45 Blue Tech Plus rigs are designed for efficient transport and jobsite setup. The SR-35 transport weight is 80,689 lbs, and the SR-45 transport weight is 94,357 lbs. Their compact design simplifies the issuance of road permits and reduces the need for heavy cranes during mobilization.
Once positioned, the hydraulic mast erection system raises the mast to full drilling height in under an hour.
Operators then level the rig using outrigger sensors, run hydraulic pressure diagnostics, and confirm system status through the DMS control panel.
This streamlined setup reduces non-productive time and allows crews to begin drilling faster.
2. Configure for your drilling method
These rigs are designed for versatility across multiple drilling techniques.
Contractors can configure the machines for:
- Kelly drilling
- Continuous Flight Auger (CFA)
- Cased drilling
- Deep foundation shafts
The SR-45 Blue Tech Plus allows Kelly-to-CFA conversion in roughly half a day, minimizing downtime when switching drilling methods.
The conversion process includes:
- Swapping the rotary head attachment
- Adjusting mast geometry
- Updating DMS drilling parameters
3. Drill smart with Blue Tech Plus intelligence
At the core of both rigs is the Blue Tech Plus hydraulic system. This advanced system uses intelligent pump management to automatically distribute hydraulic flow in response to real-time drilling loads.
Key benefits include:
- Maximum torque when penetrating dense soils
- Reduced energy waste during low load operations
- Lower fuel consumption and emissions
The SR-35 uses a single 390 L/min pump, simplifying the hydraulic architecture while maintaining high production capacity.
4. Monitor performance in real time
Both rigs feature the Soilmec Drilling Monitoring System (DMS) as standard equipment.
The system displays real-time data, including:
- Torque curves
- Penetration rates
- Mast verticality
- Winch loads
- Fuel consumption per meter drilled
This allows operators to optimize drilling performance while maintaining safety and quality control.
5. Streamlined maintenance for maximum uptime
Blue Tech Plus significantly reduces maintenance complexity. Key improvements include:
- Up to 30% fewer hydraulic components
- Reduced oil volume
- Simplified hydraulic layout
- Pressurized hydraulic tank on SR-45
Daily inspections typically take less than 15 minutes, helping crews keep rigs running and productive.
Benefits of Blue Tech Plus technology
Blue Tech Plus represents a major step forward in drilling rig efficiency. Key advantages include:
- Up to 30% reduction in fuel consumption
- Lower emissions and noise levels
- Compatibility with HVO diesel and biodegradable oils
- Reduced hydraulic oil volume
- Fewer maintenance components
- Increased drilling productivity
These improvements make the SR-35 and SR-45 ideal for both urban construction projects and large infrastructure work.
Common mistakes to avoid
Contractors can maximize rig performance by avoiding these common mistakes:|
- Disabling Blue Tech automatic hydraulic controls
- Using tooling mismatched to torque limits
- Skipping DMS operator training
- Using non-approved fuel types
- Delaying method conversions when switching drilling techniques|
Proper setup and operator training ensure these rigs deliver their full performance potential.
Performance data and efficiency insights
| Feature | SR-35 | SR-45 | Soilmec Equipment Edge |
| Torque | 103,995 lb-ft | 136,447 lb-ft | 30% fuel cut |
| Depth | 150-167 ft | 171-213 ft | Equipment sales leader |
| Fuel | 30% less | 30% less | HVO-ready Soilmec drilling rigs |
Recommended configurations and accessories
To maximize productivity, contractors often equip these rigs with:
- Locking or friction Kelly bars
- CFA augers
- Casing oscillators up to 118 in diameter
- HVO fuel compatibility kits
- Custom tooling configurations for specific soil conditions
Working with an experienced equipment supplier ensures the rig is configured correctly for your projects.
FAQs about SR-35 and SR-45 Blue Tech Plus
Q: Why choose Soilmec drilling rigs for efficiency?
The Blue Tech Plus intelligent hydraulic system saves up to 30% on fuel consumption while delivering maximum torque of 141 kNm (SR-35) to 184 kNm (SR-45), providing contractors with the best power-to-efficiency ratio available.
This makes Soilmec drilling rigs a top choice for equipment sales on projects that demand productivity and cost control without compromising performance in tough ground conditions.
Q: How fast is Kelly-to-CFA switching on Soilmec equipment?
On the SR-45 Blue Tech Plus, contractors can complete a full Kelly bar-to-CFA configuration change in half a day using quick-release rotary head attachments, hydraulic mast geometry adjustments, and DMS recalibration.
This rapid versatility keeps Soilmec drilling rigs productive across multiple methods on the same site, maximizing daily footage whether drilling shafts, CFA piles, or cased bores.
Q: What’s the maximum drilling depth in Soilmec drilling rigs?
The SR-35 Blue Tech Plus reaches 150 ft with standard locking Kelly bars or 167 ft in Rathole configuration, while the SR-45 extends to 171 ft (locking Kelly) or 213 ft (Rathole version).
Ready to upgrade your foundation drilling fleet? Call Western Equipment Solutions
If you’re looking to increase productivity, reduce fuel costs, and drill deeper foundations, the Soilmec SR-35 and SR-45 Blue Tech Plus rigs deliver industry-leading performance.
At Western Equipment Solutions, we specialize in configuring and supporting Soilmec drilling rigs to match your project requirements.
Our team provides:
- Custom rig configurations
- Equipment sales and financing options
- Operator training and support
- Job site service and parts availability
Contact Western Equipment Solutions today to learn how the SR-35 and SR-45 Blue Tech Plus can transform your drilling operations.