Libec JB40, T102RB and DL-8RB with carrying cases

The Libec JB40 KIT is a heavy-duty, professional production crane package that bundles the JB40 Telescopic Jib Arm, the T102RB Heavy-Duty 100mm Aluminum Tripod, and the DL-8RB Heavy-Duty Broadcast Dolly, accompanied by dedicated protective padded transit cases for each major component. Serving as the direct engineered successor to the popular JB30 series, this complete ecosystem is built to provide smooth vertical, horizontal, and multi-axis tracking camera moves for broadcast crews, live event operators, and cinema production teams working with medium-to-heavy camera assemblies.

System Component Breakdown & Engineering Design

1. The Core: Libec JB40 Telescopic Jib Arm

• Lever-Lock Horizontal Scaling: The mechanical centerpiece of the jib is its sliding main arm framework. Instead of forcing crews to bolt on individual fixed extension segments, the JB40 relies on a continuous telescopic front arm. Integrated high-compression lock levers allow an operator to instantly modify the operational radius anywhere between 63.0 cm and 100.0 cm (24.8" to 39.5"), making it easy to adapt to cramped indoor sets or slide out for full sweeping arcs.

• Inverse Payload Scaling: The internal geometry is structurally optimized to support heavy rigs by leveraging physical distance. When retracted to its shortest reach setting (63.0 cm), the arm acts as an ultra-stiff pedestal beam capable of hoisting a massive 30.0 kg (66.1 lbs) setup. When fully thrown forward to its maximum 100.0 cm extension, it maintains a highly robust 20.0 kg (44.0 lbs) payload threshold to mitigate structural wobbling or bending.

• Dual Setup Capabilities & Universal Base: The front camera mounting platform is a standard 100mm bowl that includes a premium AD-75 adapter ring. This allows you to mount either a standard 100mm or a compact 75mm fluid head directly to the front. The arm can also be completely inverted for ground-scraping, underslung low-angle configurations.

• Plug-In Weight Mounting Method: Transitioning away from legacy screw-in style counterweight bars, the JB40 features a redesigned plug-in style rear balance bar. This mechanical change allows counterweight discs to be slid on and pinned instantly, drastically cutting down assembly and teardown times in the field.

2. The Foundation: T102RB Heavy-Duty 100mm Tripod Legs

• High Torsional Stiffness: Built from high-strength aluminum alloy, this single-stage, 100mm bowl video tripod is explicitly engineered to handle the extreme vertical downward leverage and horizontal twisting forces created when a fully counterweighted crane arm is swung rapidly off-center.

• Rotary Lock Anchoring: Large mechanical twist grips secure the single-stage leg extensions with high compression forces, preventing vertical slipping under combined crane, counterweight, and camera packages that approach 90 kg.

3. Floor Movement: DL-8RB Heavy-Duty Dolly

• High-Capacity Tracking Casters: Featuring large, smooth-rolling 125mm rubber wheels, this dolly handles a massive structural load capacity of up to 110.0 kg (242.5 lbs). It effectively dampens minor floor imperfections to maintain a glassy shot during physical tracking moves.

• Foot-Activated Double Braking: Each caster wheel is equipped with a dual-action foot switch. Stomping the pedal immediately locks both the wheel's rolling axle and its swivel rotation, anchoring the moving platform securely into a completely rigid position. Detachable cable guards are also included to prevent the dolly from running over studio lines.

System Technical Specifications Matrix:

Operational System Tips for the JB40 KIT:

💡 The Two-Person Safety Balancing Flow: Because the JB40 is designed to support exceptionally heavy broadcast and cinema camera packages up to 30.0 kg, always employ a two-person team during setup and teardown. Ensure the pan and tilt friction locks on the jib arm column are locked down completely before mounting any gear. One operator should hold the front camera platform firmly while the second operator slides standard barbell counterweights onto the rear plug-in bar. Slowly loosen the tilt lock to check the balance, adjusting the counterweight stack until the arm floats perfectly parallel to the ground on its own.

• Isolating Monitor Drag: Avoid clamping directors' monitors or wireless video transmitters directly onto the moving arm sections, as their weight distribution shifts your counterweight profile when the jib tilts up or down. Instead, screw your articulating monitor arms into the 1/4"-20 and 3/8"-16 threaded mounting sockets located on the stationary central support column to keep your monitoring screen perfectly static while the arm moves smoothly around it.