SPT rig is a core geotechnical exploration equipment designed. It uses a 63.5kg free-fall hammer to drive a split-spoon sampler underground, records blow counts every 30cm penetration to calculate soil compactness, bearing capacity, and stratum distribution, widely sold as an SPT drilling rig for sale across global construction and geology markets. If you are interested, please get in touch with YG for a discount.
SPT Drilling Rig Parameter
| Model | YGX-400 | YGX-600 | YGX-800 | YGX-1000 |
| Drilling Depth(M) | 180-400-500 | 200-600-650 | 400-800-1000 | 500-1000-1100 |
| Rated pressure(MPA) | 21 | 21 | 25 | 28 |
| Rated Flow(L/min) | 168 | 192 | 260 | 300 |
| Heat Dissipation Mode | Air cooling+water cooling | |||
| Engine Brand | Yuchai | Yuchai | Yuchai | Cummins |
| Rated power/speed | 78kW/ 2400r/min | 92kW/ 2400r/min | 92kW/ 2400r/min | 154kW/2400r/min |
| Drilling Angle(°) | 0-90 | 45-90 | 45-90 | 45-90 |
| Lifting Force(T) | 12 | 16 | 24 | 30 |
| Feed Force(T) | 6 | 8 | 12 | 15 |
| Hydraulic Mud pump flow | 30-90（L/min） | 30-90（L/min） | 90-180（L/min） | 90-180（L/min） |
| Hydraulic Mud pump power | 4-7(MPA) | 4-7(MPA) | 4-7(MPA) | 4-7(MPA) |
| Dimension | 4000*1900*1800mm | 4000*2000*1800mm | 5500*2100*2000mm | 6000*2200*2400mm |
| Weight | 4.3T | 4.5/5.5T | 6.5T | 7.5T |
7 Core Features of SPT Rig
- ASTM Standard Automatic SPT Hammer System: Equipped with a standard 63.5kg free-fall hammer with fixed 760mm drop height, fully compliant with international SPT testing specification, ensures accurate N-value test data without manual hammer error.
- Crawler Hydraulic Chassis: Rubber crawler design with low ground pressure, strong climbing capacity up to 30°, and smoothly travels on muddy, sloped, and uneven construction sites where wheeled drilling machines get stuck easily.
- Multi-speed Variable Torque Gearbox: Four adjustable rotation speeds and matched torque output, adapts to soft silt, dense clay, and weathered bedrock, switching drilling without frequent accessory replacement.
- Retractable Foldable Mast: Hydraulic fold drill mast shortens overall transport dimension, convenient for truck loading and narrow-site transfer, cuts site setup time by over 35% vs fixed-mast old rigs.
- Modular Drill Rod Configuration: Matched 1m standard drill pipes, max drilling depth reaches 30m, freely assemble drill string to satisfy shallow and medium-depth geotechnical exploration demands.
- Dual Operation Mode (Manual + Remote Control): Centralized control panel plus wireless remote option, operators can monitor drilling status outside the borehole area to improve field construction safety.
- Integrated Mud Circulation Pump: Built-in low-pressure mud pump cools drill bit and prevents borehole collapse, effectively improving sampling success rate for loose sand layer exploration.
7 Major Applications of the SPT Drilling Machine
- Civil Building Foundation Survey: Pre-construction soil test for residential and commercial buildings to confirm foundation bearing capacity and avoid post-construction subsidence risk.
- Highway & Roadbed Geology Investigation: Subgrade soil compactness detection for new expressway and rural road expansion projects.
- Water Conservancy Dam Stability Test: Earth dam base soil penetration test for reservoir, dike reinforcement engineering, and assessing soil liquefaction possibility under flood impact.
- Environmental Soil Contamination Sampling: Polluted site vertical soil sampling for industrial factory relocation, landfill surrounding soil property inspection, and pollution depth confirmation.
- Bridge Pile Pre-construction Exploration: Offshore and inland bridge pier borehole SPT test, guide pile depth and diameter design based on real stratum data.
- Mining Preliminary Geological Prospecting: Shallow mineral resource overburden soil test, helps geologists judge overlying rock-soil distribution before formal core drilling.
- Urban Underground Pipeline Construction Survey: Narrow urban roadside exploration for water, gas pipeline trench excavation, to prevent sudden collapse during trench digging.
Real Customer Cases about SPT Rig
Case 1: Philippine Geotechnical Survey Contractor
- Client Background: A Philippine local engineering firm specializing in highway foundation prospecting and housing geologic exploration, a frequent purchaser of SPT drilling rigs for sale.
- Difficulties: Complex layered soil and shallow-deep alternating exploration demands; old rigs have insufficient drilling depth and unstable hydraulic pressure, delaying government road construction inspection progress.
- Solution: Select YGX-600 spt drilling machine: max drilling depth 650m, 21MPa rated pressure, 92kW Yuchai engine, 16T lifting force, dimension 4000×2000×1800mm.
- Effect: 0~90° adjustable drilling angle adapts mountain slope prospecting; dual air-water cooling avoids overheating under tropical high temperature, and exploration efficiency improves over 40%.
- Client Feedback: “This reliable spt rig fits the Philippine diversified stratum perfectly, stable hydraulic performance helps us finish all road survey tasks ahead of schedule.”
Case 2: USA Environmental Exploration Company
- Client Background: An American environmental detection enterprise focusing on deep-layer soil sampling and mine geological survey, a long-term buyer of our SPT drilling rig.
- Difficulties: Deep rock stratum needs large feed & lifting power; the previous small rig cannot reach the target depth, and low mud pump flow causes frequent hole collapse during deep drilling.
- Solution: Adopt YGX-1000 model: max depth 1100m, 28MPa rated pressure, 154kW Cummins engine, 30T lifting/15T feed force, mud pump flow 90–180L/min.
- Effect: High-power configuration smoothly drills hard rock; upgraded mud system stabilizes borehole, deep sampling pass rate rises greatly to meet US environmental detection standards.
- Client Feedback: “High-spec spt drilling rig satisfies our deep prospecting needs, we will purchase extra units for our new mining exploration projects.”
5 SPT Rig Buying Guides
- Confirm Project Drilling Depth: Select a portable small SPT rig for a shallow test within 15 m; choose a crawler hydraulic SPT drilling machine for 20–30m medium-depth geotechnical exploration.
- Match Local Geological Condition: Pick a mud pump-equipped model for loose sand, silt area; a standard basic SPT rig works for dense clay and hard loam construction sites.
- Check Regional Standard Compliance: North America clients prioritize ASTM D1586 certified auto-hammer rig; Southeast Asia users can choose cost-effective manual-auto dual-purpose spt drilling rig for sale options.
- Verify After-sales Support: Confirm the supplier provides overseas spare parts supply and remote technical guidance, critical for long-term rig maintenance in overseas construction sites.
- Transport Condition Reference: Customers with narrow mountain access choose a foldable mast compact crawler rig; flat inland areas can select a wheel trailer-type SPT drilling machine to save purchase cost.
4 FAQs about YG SPT Rig
Q1: What does SPT stand for on the SPT rig?
SPT refers to Standard Penetration Test, international standard soil penetration test to detect soil bearing capacity and compactness.
Q2: What’s the drilling depth range of the SPT rig?
180–1100m.
Q3: What’s the drilling angle range?
0–90°
Q4: Does YG Machiney provide spare parts after purchasing the SPT rig?
We supply global spare parts stocking and one-year core component warranty, online technical after-sales service 24/7 for all buyers of SPT drilling rig for sale.
