Norton Rixson Model 345 Center Hung Top Pivot with Long Throw Pin for Doors Over 8'6"

Norton Rixson Model 345 Center Hung Top Pivot with Long Throw Pin for Doors Over 8'6"

Professional Center Hung Pivot Solution for Tall Doors

The Norton Rixson Model 345 is a specialized center hung top pivot designed for doors over 8'6" (2491mm) in height with earthquake tolerance capabilities. This fully concealed, non-handed pivot features a long throw pivot pin that engages 1-3/4" (44mm) into the top of the door, with a walking beam-type design utilizing a 1/2" (13mm) diameter pivot pin. Compatible with any center hung bottom pivot or floor closer whose pivot point is 2" (50mm) or greater from the door edge.

Professional Features & Benefits

• Tall Door Compatibility: Specifically designed for doors over 8'6" (2491mm) in height with enhanced stability for oversized applications.
• Long Throw Engagement: Pivot pin engages 1-3/4" (44mm) into the top of the door for superior holding power and alignment.
• Earthquake Tolerant Design: Engineered to withstand building settling and seismic activity for enhanced safety in challenging environments.
• Walking Beam Construction: Features 1/2" (13mm) diameter pivot pin with oil-impregnated sintered bronze bushing for smooth, long-lasting operation.
• Universal Compatibility: Works with any center hung bottom pivot or floor closer with pivot point 2" (50mm) or greater from door edge.
• Fully Concealed Operation: Completely hidden when door is closed for clean architectural appearance.
• Non-Handed Design: Single unit works for both left and right-hand door applications.
• Manufacturer Warranty: 2-year limited warranty for added confidence and protection.

Technical Specifications

• Application: Heavy-Duty
• Commercial/Residential: Commercial
• Department: Door Hardware
• Door Hand Direction: Non-Handed
• Duty Level: Heavy Duty
• Electronic: No
• Fire Rating: No
• Hang Type: Center Hung
• Mounting Method: Center Hung
• Pivot Type: Top & Bottom
• Product Attribute: Pivots
• Product Category: Door Hinges and Pivots
• Product Group: Door Hinges and Pivots
• Product Subgroup: Pivots and Pivot Sets
• Product Type: Pivot Hinges
• Series: 345 Series
• Subcategory: Center Hung
• Warranty: 2 Year Limited

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness, height over 8'6", and center hung pivot compatibility.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door top and frame header surfaces.
3. Prepare door and frame by drilling required holes ensuring proper alignment for the long throw pivot pin engagement.
4. Install the pivot assembly ensuring the 1-3/4" engagement depth is achieved and the walking beam mechanism operates freely.
5. Verify compatibility with bottom pivot or floor closer, confirming the pivot point is 2" or greater from door edge as required.
6. Test pivot operation through full door swing to verify smooth function and proper alignment. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Commercial Office Buildings with Tall Entrance Doors
• Educational Facilities with Oversized Doors
• Healthcare Institutions Requiring Heavy-Duty Hardware
• Retail Establishments with Large Format Entrances
• Industrial and Warehouse Facilities
• Government and Municipal Buildings
• Seismic Zone Applications Requiring Earthquake Tolerance

Why Choose Norton Rixson Quality?

Norton Rixson Model 345 pivots deliver professional-grade reliability with oil-impregnated sintered bronze bushings and walking beam construction engineered for demanding commercial applications. The 2-year limited warranty and earthquake tolerant design provide confidence for challenging installations where dependable performance is essential. Specifically engineered for doors over 8'6" in height where standard pivots cannot provide adequate support and stability.