Libec ALX S4 Slider (15.5")

Libec ALX S4 Slider (15.5")
Libec ALX S4 Slider (15.5")

Libec ALX S4 Slider (15.5"). (Mfr # ALX S4)

Key Features:

• Roller Bearing Sliding System
• 33 lb Load Capacity on Flat Surfaces
• 12" Travel Distance
• 15.5" Total Track Length

Sliding Range

12" (30.5 cm)


33 lb (15 kg) (when not mounted on a tripod)

Head Attachment

3/8"-16 screw

Tripod Mount Types

75 mm ball base
1/4"-20 and 3/8"-16 threaded holes on bottom of
75 mm ball base

Accessory Mounting

1/4"-20 and 3/8"-16 threaded holes (at each end of tripod)

Rosettes (one at each end of tripod)


Aluminum alloy and engineering plastic


5.5" (40 cm)


3.1 lb (1.4 kg) (excluding tripod mount adapter and bowl tie-down)

Standard Manufacturer's Warranty.

The Libec ALX S4 is a 15.5" long camera slider that features an integrated 75mm ball base with a flat bottom, allowing it to be mounted directly to 75mm bowl fluid heads as well as flat-base heads. When used on tabletop or flat surface using, the slider has a maximum load capacity of 33 lb. For smooth and wobble-free operation, the carriage features eight roller bearings positioned on the rail top and along the sides at angles. A spring-loaded friction knob allows you to adjust slide tension, while a brake knob will lock the carriage in place at any point on the rails. Using a supplied hexagon wrench, you can adjust the pushing force that the ball bearing exerts on the rail.

At each end of the slider, there are 1/4"-20 and 3/8"-16 threads and a rosette for attaching various accessories. If you will be using the slider on the ground or tabletop, the slider features built-in legs with height-adjustable feet to accommodate non-level terrain. For compact storage, the legs fold up against the side of the slider, securing in place using thumb knobs. Unscrewing the knobs completely allows you to detach the legs completely and swap out the 15.5" rail for separately available 32.6" or 47" rail lengths.

Key Features

• 12" slide range with a 33 lb payload
• 33 lb load capacity when used on a tabletop or flat surface
• Dual-base tripod mount adapter and bowl clamp for mounting on a tripod with a flat-base or 75mm ball head
• Eight high-performance ball bearings on the top and sides allow for smooth, wobble-free motion
• Tension/friction knob, brake knob, and bubble level
• 15.5" rail can be swapped for optional 32.6" or 47" rail lengths
• Collapsible tabletop legs for easy setup and storage
• Height-adjustable feet
• Includes padded carrying case with fixing handle and maintenance kit

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