Product Catalog

Jennmar's conventional bolts consist of a shell anchor headed smooth bar with a consistent threaded end. A bearing plate is also used to provide increased strata control. Jennmar offers several types of shell anchorage systems. Our bail anchors have full shell-length contact and work well in weak strata conditions.

J-Channel Beams, Wide Flange Beams & Heat Treated Serrated Steel Beams (Waffle)

Belt Hanger for Steel Sets, Utility Hangers, Belt Hangers, J-16, J-9, Rabbit Ear, and Angle

JENNMAR's Bendable Bolts are available where bending is necessary to permit installation of bars that are longer than the mine opening height.

JENNMAR Bolt Head Markings, Recommended BOLT Torque, and Cable and Threaded Bolts Color Codes

JENNMAR offers a complete line of cable support products. These products are based on a 7-strand, high-strength cable. JENNMAR offers an industry-leading line of cable products including non-tensioned cables, post-tensioned cables, tensionable cables for primary roof support, and fully-grouted cables.

With our heavy-duty coiling machine, JENNMAR can produce coil reels to fit mechanized cable bolting machines which increase productivity due to concurrent drilling and cable installation.

A Cable Tensioning Unit (CTU) is portable device that will pre-stress various size cables.

The CABLE-LOK Shell is a spring-loaded shell that can be automatically set on installation.

For Installation of Bearing Plates

T-Channels, Roof/ Rib Safety Channels, Roof and Mini Monster Mats

JENNMAR offers the industry's most proven combination bolt system in the mining industry by providing ultimate tension in weak strata.

All systems are configured with high strength bar: - (Grade 55 (55,000 psi minimum yield) - (Grade 75 (75,000 psi minimum yield)

JENNMAR offers a cuttable high strength molded fiberglass rib pan and plates for environments requiring corrosion resistance.

The D-Tech Bolt 20 mm is designed for highly seismic and converging geotechnical domains.

The D-Tech Bolt 23 mm is designed for highly seismic and converging geotechnical domains.

The Fast Anchor 3 is a double corrosion-resistant steel bolt for strata control that provides quick assembly and secure installation due to its expansion shell that provides immediate anchorage and generates superior grip upon application.

The JENNMAR FRICTION-LOK Stabilizer System is a strata control system designed to firmly control hard or soft rock. As lateral ground movement increases, the system increases its superior holding power.

JENNMAR is capable of providing powder-coated, epoxy-coated, and hot-dipped galvanized products.

Forged Head Rebar and J-BAR

Reliable self-drilling installation with single-pass drilling and grouting installation.

Various steel sets that are protected with JENNMAR's IRL panels have been approved by MSHA and installed in several underground roof fall rehabilitation projects.

The Fully-Grouted INSTAL Bolt is the ideal high tension bolt due to the resin that locks bolt tension within the system, while significantly slowing down the weathering process around the bolt hole.

J-Block products are composed of non-toxic incombustible materials whose air permeability and relative fire resistance characteristics are unequaled.

The J-CAN is a secondary standing support product with options in diameter and height.

The J-LOK resin in the cartridge is used to anchor bolts to the surrounding strata. This unification of the resin, bolt, and strata layers provides the necessary strength and rigidity to prevent sag by acting as a reinforcement that anchors the individual stratified layers of rock into a single high strength beam.

J-SAND and J-SANDY Props are lightweight, high-capacity props that are easily installed with nominal capacities of 35-100 tons.

Wide range of applications including rock bolts, rock dowels, rock spiles, soil nails, micro piles, etc.

The JM CABLE Fully Grouted Cable Bolt is proven to be very versatile roof support due to its ability to control many different ground conditions, from increasing the lifespan of standard cable bolt supports in long-term main entry systems to stopping the ingress of water.

The INSTAL CC Cable Bolt cable bolt is part of the INSTAL family of tensionable cable bolts and is the only tensionable system approved by MSHA as primary support.

Post-Tensioned Cable Bolt (PT) is manufactured using 0.6 or 0.7" cable and incorporates resin mixing bulbs and a stiffener tube.

The JM CABLE Silicone Injected Cable Bolt allows the use of longer cable bolts without concerns about water from drilling into aquifers in the above strata.

JM CABLE SUMO Cable Bolts provide a very high strength steel wire strand, with metallurgy designed for applications in both coal and hard rock mining, as well as civil and tunneling projects.

Applying coatings to our products isolates and actively protects the product making them resistant to corrosive environments.

M3 expandable rock bolts offer superior quality that responds to the most demanding roof support applications. Its high load capacity and excellent elongation properties ensure safer working conditions and faster excavation cycles.

Available in hydraulic or electric pumps.

The patented Mech-Lok bolt with Energy Absorbing Ring is designed to be easily installed in poor ground conditions, but maximise load capacity.

The 47 mm Mech-Lok Bolt Dynamic 20 mm Hybrid Friction Bolt is designed for easy installation in poor and difficult ground conditions, such as squeezing and seismic ground conditions

The 47 mm Mech-Lok Dynamic 22 mm Hybrid Friction Bolt is designed for easy installation in poor and difficult ground conditions, such as squeezing and seismic ground conditions

Fast, single-step anchoring system using standard equipment. Efficient installation since drilling and grouting can be performed in a single operation, saving both time and money.

Jennmar plate products feature high strength, lightweight, and a low profile, effectively distributing roof bolt load evenly in all directions. Manufactured under rigid quality - control conditions in accordance with ASTM F432, plate ratings range from 20,000 to 60,000 lbs. Customized sizes and coatings are available.

Once cured, the Pourable Resin Grout forms an effective corrosion barrier from a pH of 2 through a pH of 11.

JENNMAR's array of props are easy to transport and install. They provide reliable support and help maintain the integrity of the mine roof. JENNMAR manufactures a full range of prop configurations with a variety of pre-load and yield options to meet your mine's specific requirements.

JENNMAR manufactures a full range of prop configurations with a variety of pre-load and yield options to meet your specific requirements.

The Self-Drilling bolt is a fully threaded hollow bar that initially serves as a drill rod, utilizing a lost bit. The thread is made to comply to ISO 10208. For use in unconsolidated ground or other difficult ground conditions.

JENNMAR's tensioned rebar bolts have threaded ends and can be used as fully grouted or point anchored systems.

JENNMAR offers the mining and tunneling industries the most reliable, high-strength truss systems available.

Jennmar Engineering has designed, tested, and developed the Impact Resistant Lagging (IRL) system to protect steel sets. Various steel sets that are protected with IRL panels have been approved by MSHA and installed in several underground roof fall rehabilitation projects.

An environmentally friendly solution Jennmar Virsbolt is a safe and environmentally friendly way to speed up your tunneling operation. Just add water, no need for chemicals or cement grout to anchor the bolt. It creates a better working environment without the need to use chemicals.

YIELD-LOK Bolt is a new generation of yielding rock bolt that provides reliable ground control in both seismic and convergence ground conditions. It is fully grouted with resin or cement in the application and provides immediate primary support on installation.