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Split Arm Casement Window Operators | Replacement Truth Split Arm Operator Parts

Split arm casement window operators are essential components that allow smooth opening and closing of casement windows by connecting the window sash to the crank mechanism. Designed for precise movement and reliable performance, these split casement window parts ensure your windows operate easily and stay securely closed. Find high-quality, genuine Truth split arm operators compatible with a range of window styles and trusted by professionals for repairs and upgrades.
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Split arm casement window operators are engineered mechanisms used to open and close outward-swinging casement windows. These critical hardware components connect the window sash to the operating handle, translating the crank's motion into controlled movement that securely opens and closes the window. Split arm operators are especially popular for their smooth operation and compatibility with many residential and commercial window brands.

What Is a Split Arm Casement Operator?

A split arm casement operator consists of a main gear housing and two arms - ne straight and one offset or bent,that attach to different points on the window sash. As you turn the window's crank handle, the arms work together to push the sash open or pull it closed, providing reliable and even movement. This design helps maintain a tight seal when the window is closed, improving both security and energy efficiency. Split arm operators are often used on wood, vinyl, and aluminum windows and are commonly found in many modern and legacy window systems.

Compatible Window Brands & Use Cases

Truth split arm operators are frequently used in popular window brands, including Hurd, Marvin, Cascade, BiltBest, Milgard, Sierra Pacific, Allsco, and others. Whether you're restoring windows in a historic home or maintaining large commercial properties, these parts deliver dependable performance. Their universal design makes them suitable for common replacement needs, such as worn-out gears, broken arms, or non-functioning cranks. For windows exposed to harsh weather, stainless steel models are available to resist corrosion.

Replacement & Installation Tips

  • When replacing your split arm casement window operator, always confirm whether your window is left- or right-handed by checking which side the hinge is on when viewed from the inside.
  • Match the length of the operator arm and style of the gear housing with your existing setup to ensure seamless installation.
  • Use mounting screws of appropriate length, especially when installing into vinyl or composite frames, to achieve a secure fit.
  • Check that the operator is compatible with your sash bracket and that the arms clear the window sash properly throughout the full range of motion.
  • Genuine Truth operators are designed for precise fit and long-term durability, making them the top choice for demanding replacement projects.

For specialized applications or coastal environments, select stainless steel split arm options for superior resistance to corrosion and extended service life.

Featured Split Arm Operator Models

Shop our collection for a variety of trusted options, including:

Frequently Asked Questions

  • How do I determine if I need a left-hand or right-hand split arm operator?
    Stand inside facing the window. If the hinge is on the left, you need a left-hand operator; if it's on the right, you need a right-hand operator.
  • Are these operators compatible with older window models?
    Many Truth split arm operators fit both legacy and new models, but always verify measurements and arm style before ordering.
  • Can I install a split arm casement operator myself?
    Basic DIY skills and common tools are usually sufficient. Be sure to follow the installation instructions and take note of the orientation and mounting points.

As an authorized reseller, we supply only genuine AmesburyTruth split arm casement window operators, ensuring reliable quality and perfect fit for your window repair or upgrade project. Whether you're replacing a damaged operator or outfitting a new window installation, our split casement window parts provide the performance and durability you need.