Dynamic Probing Cones
Probe cones are used for dynamic probing, which determines the resistance of soils in-situ in accordance with BS 1377 Part 9.
Probe cones can be sacrificial or retained, and are available in bright mild steel.
TT Precision Engineering Limited stocks the items detailed below as standard, but can also manufacture cones to customer specifications.
Two types of Dynamic Probing Apparatus |
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| Part | Heavy (DPH) | Super Heavy(DPSH) |
| Drive Weight (kg) | 50 ± 0.5 | 63.5 ± 0.5 |
| Drop Height (mm) | 500 ± 10 | 750 ± 20 |
| Nom. Cone Area (cm2) | 15 | 20 |
| Cone Diameter (mm) | 43.7 ± 0.3 | 50.5 ± 0.5 |
| Cone Mantle Length (mm) | 43.7 ± 1 | 50.5 ± 2 |
| Cone Tip Length (mm) | 21.9 ± 0.1 | 55.3 ± 0.4 |
| Drive Rod Diameter (mm) | 35 | 35 |
| Drive Rod Mass (kg/m) | 6 | 8 |
| All cones have a 90° point, and may be sacrificial (without thread), or retained (with thread). | ||
High-Precision Dynamic Probing Cones
Heavy-Duty Sacrificial and Removable Cones for Geotechnical Site Investigations
Accurate soil strength profiling and compaction testing rely on the unyielding geometry of your drilling consumables. At TT Precision Engineering Limited, we manufacture a premium range of Dynamic Probing Cones engineered to withstand intense, repetitive impact loads across the most abrasive sub-surface strata.
Machined in our UK facility from bright mild steel, our probing cones are made to the dimensions set out in BS EN ISO 22476-2 for heavy (DPH) and super heavy (DPSH) dynamic probing, with other sizes made to order. Whether you require sacrificial cones for deep profiling or retained cones for repeated use, we deliver the durability your field operations demand.
Engineered for Extreme Impact & Longevity
In-situ penetration testing subjects equipment to immense stress. Our dynamic probing consumables are engineered to eliminate the most common on-site failure points:
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Strict Dimensional Tolerance: Every cone is precision CNC-machined to exact apex angles (90°) and nominal base diameters, ensuring your dynamic penetrometer blows-per-increment counts remain perfectly accurate.
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Durable Construction: Accurately machined cone geometry and quality materials help our cones resist tip blunting and shoulder rounding when driving through dense gravels and stony fills.
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Seamless Thread Matching: Engineered with precise internal or external thread alignments to fit seamlessly onto your standard dynamic probing rods, reducing thread binding and preventing down-hole detachment.
Our Dynamic Probing Product Range
We supply a comprehensive selection of probing tips tailored to your specific rig and survey requirements:
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Sacrificial Probing Cones: Cost-effective, high-turnover cones designed to be left down-hole once target depth or refusal is reached, saving critical time on high-volume environmental and structural site surveys.
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Retained / Reusable Probing Cones: Threaded cones designed for clean extraction and repeated use in cohesive or non-binding soil profiles.
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Custom Dimensions: Need a specific thread pitch or alternative cone diameter? As a dedicated precision engineering machine shop, we can manufacture bespoke probing tips directly from your technical drawings or schematics.
Contact us for further information:
Tel: 01245 325868 | Contact Us