SIRUI K-40X Aluminium Tripod Head KX-Series

Overview

The SIRUI K-40X is a high-load-capacity ball head from the KX Series, crafted from aviation-grade
aluminium and designed to support very heavy camera setups. With its precise machining, separate pan and locking
knobs, and a 360° panoramic base, it’s engineered for professional use — perfect for telephoto lenses, large DSLR
rigs, and demanding shooting conditions.

Key Features & Benefits

• High Load Capacity
  
  Supports up to 35 kg (77.2 lb), making it suitable for large telephoto lenses and heavy camera rigs. :contentReference[oaicite:1]{index=1}
• 360° Panoramic Base
  
  Enables full 360° rotation for panoramic shots or smooth panning via a dedicated knob. :contentReference[oaicite:2]{index=2}
• Separate Control Knobs
  
  Pan, locking, and tension (friction) knobs are distinct — allowing fine control without interfering with each other. :contentReference[oaicite:3]{index=3}
• High-Precision Ball Mechanism
  
  Machined to a tolerance of 0.01 mm between the ball and bearing, ensuring smooth, precise movement. :contentReference[oaicite:4]{index=4}
• Safety Lock System
  
  Prevents the quick-release plate from slipping accidentally — adds security when mounting heavy gear. :contentReference[oaicite:5]{index=5}
• Arca-Swiss Compatibility
  
  Uses an Arca-Swiss type clamp for wide compatibility with quick-release plates. :contentReference[oaicite:6]{index=6}
• Triple Bubble Levels
  
  Includes three spirit levels (horizontal, vertical, radial) for accurate alignment. :contentReference[oaicite:7]{index=7}
• Durable Build
  
  Made from CNC-milled aluminium with high-end surface finish, ensuring long-term reliability. :contentReference[oaicite:8]{index=8}
• Anti-Twist Quick-Release Plate
  
  The plate has anti-twist design and a safety button to secure your camera in portrait orientation. :contentReference[oaicite:9]{index=9}

Specifications

Summary of Benefits

• Handles very heavy camera and lens combinations confidently.
• 360° panning helps for panoramas and continuous motion shots.
• Separate knobs give you precise control over pan, tilt, and friction.
• Ball mechanism is extremely smooth and accurate, thanks to tight manufacturing tolerances.
• Safety lock minimizes risk of plate slippage, especially under heavy loads.
• Arca-Swiss mount ensures compatibility with a wide range of plates.
• Triple bubble levels make leveling easier and more precise.
• Strong aluminium body gives durability without too much extra weight.

Perfect For

• Wildlife photographers using large telephoto lenses.
• Sports photographers needing fast and stable panning.
• Landscape and architectural photographers shooting panoramas.
• Studio photographers who use heavy DSLRs or medium-format setups.
• Videographers who want to mount heavy video cameras and rigs.

In summary: The SIRUI K-40X ball head from the KX Series is a rugged, high-performance head designed
for professional use. Its 35 kg load capacity, precision engineering, and safety-focused design make it a reliable
choice for demanding shoots where stability and control are critical.