JB ROCK BOLTS
A Rock Bolt is a long anchor bolt used to stabilize rock in tunnels, rock slopes, and underground excavations. It transfers load from the unstable outer zone of the rock mass to the stronger, more stable interior.
Manufactured by JB Engineering (Rebar Couplers India Private Limited) – an ISO 9001:2015, ISO 14001:2015 & ISO 45001:2018 certified company – JB Rock Bolts are engineered for strength, structural reliability, and long-term performance in demanding geotechnical and mining environments.
A Rock Bolt is a high-strength steel reinforcement bar installed into drilled rock holes to reinforce and stabilize rock formations.
Provides active rock reinforcement in tunnels and underground cavities to prevent collapse and rock movement.
Stabilizes natural and cut rock slopes by reinforcing fractured or weathered rock faces.
Enhances ground support in underground mining operations by securing unstable rock masses.
Controls deformation before excavation and improves long-term structural safety.
Rock bolts are used to strengthen retaining walls and rock faces by anchoring unstable rock layers, helping prevent movement and improving the overall stability of slopes and supporting structures.
Manufactured using high-grade steel to provide dependable load-bearing capacity in rock reinforcement applications.
JB Rock Bolt is actively stressed. By pre-stressing the anchor rod, excessive deformation of soil and rock structures is restricted before excavation begins.
Designed with a free front section and bonded rear section, ensuring controlled load distribution and structural efficiency.
Available with protective coatings to enhance durability in aggressive underground environments.
Designed to withstand environmental stresses, ensuring long-term structural performance.
JB Self-Drilling Anchors are available in R Thread and T Thread systems with diameter ranges from 11 mm to 111 mm and ultimate load capacity up to 14,230 kN depending on type. Engineered for high tensile strength, superior yield performance, and full compatibility with grouting systems, our anchor bars, couplers, nuts, plates, and drill bits are designed for heavy-duty ground support, tunneling, mining, slope stabilization, and infrastructure projects.
JB Rock Bolts are manufactured at ISO-certified facilities under strict quality control systems to ensure:
- Dimensional accuracy
- Material strength compliance
- Load-bearing reliability
- Thread precision
- Long service life
Manufactured by JB Engineering, serving infrastructure, metro rail, hydro projects, tunnels, mining, and major engineering contractors across India and international markets.
01. What is the purpose of a rock bolt?
A rock bolt stabilizes rock formations in tunnels, slopes, and underground excavations by transferring load into stable strata.
02. What steel grade is used in JB Rock Bolts?
IS1786 – Grade FE500D / 550D.
03. Are custom bolt lengths available?
Yes, bolts are available in any required length as per project specifications.
04. What thread sizes are available?
M24 (25mm), M30 (32mm), and M38 (40mm).
05. Are bearing plates customizable?
Yes, plates are available in different sizes with optional injection holes.