The RMT SECO S250 Jackleg Drill — also known as the perforadora neumática S250 — is engineered as a direct equivalent to the Boart Longyear S250, the most widely used underground jackleg rock drill in Latin America and across global underground mining markets.
Known in Spanish-speaking mining markets by various names — SECO S250, RNB SECO S250, RNP S250, S250 rock drill maquinaria— this drill has become the benchmark for underground pneumatic hand-held drilling in narrow vein mining, drifting, and tunnel development.
This drill weighs 34 kg and delivers 2200-2300 blows per minute at 6 bar (90 psi) working pressure; the RMT Seco S250 Pneumatic Drill delivers high penetration rate in the most demanding rock conditions.
The complete RMT Seco S250 package includes:
• Pie de avance (pusher leg/ jackleg)
• Lubricadora (airline lubricator)
• Gamarrilla (water swivel)
• Manguera con conexión (Hose pipe with connections)
The RMT S250 perforadora jackleg is used across the full range of underground hard-rock mining applications.
Underground mining: The S250 is the standard drill in narrow vein and medium-width stopes across silver, gold, copper, lead-zinc and polymetallic underground mines throughout the Andes — from Cajamarca and Cerro de Pasco in Peru to Antioquia in Colombia and Atacama in Chile.
Its ability to drill in confined spaces at challenging angles — horizontal, inclined, and upward — while delivering a high penetration rate and strong torque even at low air pressure makes it irreplaceable in small- to medium-sized underground operations.
Drifting and Tunnelling: The jackleg configuration with the S250 pie de avance allows efficient drilling of multiple holes, with the pusher leg providing the advance force so the operator handles only guidance and rotation control – reducing operator fatigue significantly on long working hours.
Additional applications: Grouting, anchor bolt hole drilling, scaling, and general underground rock-breaking work.
The RMT S250 is 100% equivalent to the Boart Longyear SECO S250 or RNP S250. Its spare parts are also fully interchangeable with all the available S250 models on the market.
Thus, the mines already running S250 drills can switch to RMT units without the need to change their spare parts inventory — the same repuestos para perforadora S250 (spares) fits the RMT drill also.
Check the price of the Seco 250 Rock Drill (perforadora seco 250 precio) from RMT, as a direct mining tools manufacturer and exporter from India, RMT provides a 6-month replacement warranty on any kind of manufacturing defect and full after-sales spare parts support worldwide — including countries like Perú, Colombia, Chile, Ecuador and México in Latin America, along with other countries worldwide, along with the best price as per the market standard.
Request a Quote or the catálogo perforadora seco 250 (Catalogue) for the RMT S250 Jackleg Drill — Equivalent to Boart Longyear S250 - Direct from the construction and mining tools manufacturer from India.
Technical Specification
| Model # | RMT S250 | |
| Weight | 35.2 kg | 77 lb |
| Length | 708 mm | 28" |
| Air consumption | 73 l/s | 156 cfm |
| Air pressure | 6 bar | 87 psi |
| Air Inlet | 25 mm | 1" BSP |
| Blows per minute | 2200 | |
| Stroke | 73 mm | 3" |
| Bore | 79.4 mm | 3" |
| Shank size | 22 x 108 mm | ⅞" x 4¼" |
| Manufacturer | RMT | |