Libec Flat base video head with 150mm bowl adapter and 2 PH-15B, payload 40kg
Libec Flat base video head with 150mm bowl adapter and 2 PH-15B, payload 40kg is backordered and will ship as soon as it is back in stock.
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The exact factory hardware match for this configuration is the high-capacity Libec QH1 Professional Fluid Head.
The QH1 serves as Libec's primary choice for mid-to-heavy television broadcast configurations. While its native design is a 4-bolt flat base optimized directly for heavy studio pedestals, it packages from the factory with a dedicated 150mm half-ball adapter and two PH-15B telescoping pan bars to seamlessly adapt to heavy field tripods for payloads up to exactly 40 kg (88 lbs).
Core Capabilities of the Libec QH1 Heavy-Duty System
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Continuous Counterbalance with Illuminated Meter: To eliminate the dangerous "snapping" or standard stepping limitations of lighter heads, the QH1 uses a variable internal spring tension layout. It offers a perfect balance sweet spot for rigs weighing between 15 kg and 35 kg (33 to 77 lbs). A physical, backlit side indicator tracks the exact position of the balance coil.
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7-Step Disked Fluid Drag: Features independent 7-stage pan and tilt selector toggles built around a heavy-duty multilayered metal disk architecture. This ensures highly predictable, repeatable mechanical drag control over slow tracking moves, avoiding the jerky static friction common to heavy payloads.
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Dual-Bar Studio Ergonomics: Outfitted with robust dual rosettes to lock down the two included PH-15B telescoping handles. Having two handles is critical for managing a 40 kg load, allowing an operator to steer smoothly while mounting broadcast electronic zoom demands to one side and focus demands to the other.
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Top-Loading Side-Mount Plate: To keep operators from having to slide a massive camera assembly from the rear, the QH1 uses an advanced side-mount release platform. The camera rig drops safely straight down into the mount from above and snaps locked instantly, providing a generous $\pm$75mm sliding range for center-of-gravity adjustments.
Technical Specifications Matrix:
| Performance Parameter | Libec QH1 Heavy-Duty Fluid Head Specifications |
| Maximum Ultimate Payload | 40.0 kg / 88.0 lbs |
| Perfect Counterbalance Window | 15.0 kg to 35.0 kg / 33.0 lbs to 77.0 lbs (C.G. at 125mm) |
| Native Mounting Base | 4-Bolt Flat Base (Standard P.C.D. 111.1mm) |
| Included Bowl Interface | Libec 150mm Half-Ball Adapter (Bolts directly to base) |
| Pan / Tilt Drag Control | 7-Step Mechanical Metal-Disked Fluid Dampening |
| Vertical Tilt Angle Limits | +90° to -70° Range |
| Included Controls | 2x Libec PH-15B Telescopic Pan Bars |
| Illuminated Assist Tools | Integrated LED light for the Balance Scale and Bubble Level |
| Standalone Head Weight | 12.7 kg / 27.9 lbs |
Safety Operations Reminder:
⚠️ The Safety Pin Lock Rule: Before mounting a 40 kg camera package or stripping accessories off the top plate, always engage the physical Center Tilt Lock mechanical pin on the side of the head. Do not rely on standard friction locks when swapping components; the pin locks the head completely level at 0 degrees, preventing the heavy camera from suddenly nose-diving forward or flipping backward.




