Extended Arm t/s Double Rebated Door Selector – 152mm

In professional ironmongery, a 152mm extended Arm (approximately 6 inches) is often the standard “extended” length used to replace short-reach arms that struggle with inset doors. This length is the definitive solution for doors mounted in reveals up to 75mm deep. By extending the pivot point, the 152mm extended arm allows the door to open to its maximum designed angle without the arm “binding” against the frame or putting undue lateral stress on the closer’s internal spindle.

Crafted from high-tensile materials—typically Forged Steel or Grade 304 Stainless Steel—these arms are built to manage the constant tension required for fire-rated door sets. Whether finished in Satin Stainless Steel (SSS), Polished Chrome, or Silver Enamel, the 152mm profile offers a rigid, stable connection that ensures the door latches securely against its seals every time.

Why the 152mm Extended Arm is the Professional Choice

• Optimized 152mm Reach: Provides the critical clearance needed for “inset” doors where a standard arm would limit the opening swing.

• Improved Closing Torque: Maintains the correct mechanical advantage throughout the closing arc, ensuring the door overcomes air pressure and latches firmly.

• Solid-Core Durability: Forged from heavy-duty metals to prevent warping or bending over thousands of cycles in high-traffic environments.

• Universal Spindle Interface: Designed to fit standard square or splined spindles common on Grade 1 and Grade 2 overhead door closers.

• Fire Safety Compliance: Essential for ensuring fire doors fully close into the frame, a non-negotiable requirement for building safety inspections.

• Corrosion-Resistant Coating: Available in various architectural finishes to match existing door hardware and resist wear in humid or external conditions.

Technical Specifications of 152mm Extended Arm

Professional Installation and Tuning Tips

Achieving the perfect “sweep and latch” with a 152mm Extended Arm requires careful calibration of the closer’s valves:

1. Check the 90° Rule: For the most efficient operation, the main arm should be positioned at a 90° angle to the door face when the door is in the closed position. The 152mm length helps achieve this on deeper frames.

2. Thread Alignment: If the arm features a threaded adjustment rod, ensure at least two diameters’ worth of thread are engaged inside the knuckle to prevent stripping under high pressure.

3. Hinge Clearance: Ensure the 152mm Extended Arm does not strike the top of the door or the frame’s head during the opening cycle. The 152mm length is specifically designed to provide this “vertical” clearance.

4. Lubrication Schedule: Apply a small amount of lithium-based grease to the pivot knuckle every 12 months. This ensures silent operation and prevents the metal-on-metal wear that can lead to “arm sag.”

5. Finish Match: To maintain a cohesive architectural look, ensure the arm’s finish matches the cover of the door closer body and the surrounding hinges.

A Reliable Standard for Everyday Access

The 152mm Extended Arm is the definitive choice for facility managers and installers who need a dependable, mid-reach solution for standard door sets. It bridges the gap between compact residential hardware and heavy-duty industrial extensions. By selecting a precision-forged 152mm Extended Arm, you are investing in a component that ensures your door remains functional, safe, and compliant for years to can come.

This 152mm Extended Arm is designed to suit double rebated door selectors, providing reliable performance and smooth operation. It helps control the closing sequence of rebated double doors, ensuring that the correct leaf closes in the right order for proper alignment and security. The extended arm makes the selector more versatile, allowing it to fit a wider range of door setups and giving extra reach where needed. Strong, functional, and easy to fit, it is an essential part for keeping rebated doors working correctly.

Made from durable material, this 152mm Extended Arm is built to withstand regular use in both residential and commercial settings. Once fitted, it works seamlessly with the door selector, ensuring doors shut safely and without damage to the frame or hinges. The 152mm size offers a practical balance between reach and strength, making it a dependable solution for different installation requirements. Whether you are replacing a worn part or completing a new door fitting, this 152mm Extended Arm provides the reliability and quality you need. A simple yet important piece of hardware, it helps maintain smooth door operation every time.