Two Pivot Types, Two Different Jobs
This article helps contractors, facility managers, and specifiers choose between center-hung and offset pivots before a door is prepped or a floor is poured. Get the pivot type wrong and you are looking at the wrong swing direction, mismatched overhead concealed closer templates, or a fire-rating gap the inspector will flag. The decision is not complicated once you understand what each pivot is actually doing.
What Is a Door Pivot?
A door pivot is a bearing assembly that transfers door weight directly to the floor or frame rather than cantilevering it from hinge barrels on the jamb. A typical pivot set consists of a top pivot, a bottom pivot, and one or more intermediate pivots added for taller or heavier doors. Because the load path goes straight down through the bottom pivot to the floor structure, pivots can support doors well beyond what butt hinges can handle—some sets are rated for 1,000 lbs or more.
The two most common types you will encounter on a commercial hardware schedule are the offset pivot and the center-hung pivot. They look similar in a catalog photo but they behave completely differently at the opening.
Offset Pivots: Single-Acting, Handed, Precise
An offset pivot positions the pivot point 3/4 inch from the heel edge of the door (a 1-1/2 inch offset version also exists for specific frame conditions). Because the pivot point is not centered in the door thickness, the door can only swing in one direction—which makes offset pivots single-acting only.
Key characteristics:
- Handed: You must specify left-hand or right-hand at the time of order. There is no field flip.
- Fire-rated options available: Offset pivot sets carry UL listings up to 3-hour, making them appropriate for fire door assemblies in schools, healthcare corridors, and industrial occupancies where labeled openings are required.
- Weight range: Common sets are rated from 200 lbs up to 1,750 lbs depending on the bottom pivot mount type (jamb-mortised, floor-mounted, or mortise cement case).
- Bottom mount options: Jamb-mounted, floor-mounted, and mortise cement case—the choice affects floor prep timing on a poured slab.
- Common applications: Aluminum storefront entries, lead-lined doors in healthcare imaging suites, heavy exterior doors on institutional buildings, and any single-acting door where a cleaner profile than a butt hinge is preferred.
The 3/4 inch offset is the standard. The 1-1/2 inch offset is used when frame geometry or a specific head condition prevents a standard offset top pivot from clearing properly—confirm the frame detail before specifying the wider offset.
Center-Hung Pivots: Non-Handed, Double-Acting Ready
A center-hung pivot places the pivot point at the center of the door thickness. This geometry allows the door to swing freely in both directions, which is why center-hung pivots are the standard choice for double-acting doors—think cafeteria service doors, restaurant kitchen pass-throughs, or high-traffic corridor doors in schools and healthcare facilities where staff push through from either side.
Key characteristics:
- Non-handed: Center-hung pivots do not require a hand designation. The same set installs on a left-hand or right-hand opening without modification.
- Single-acting use: Center-hung pivots can also work on single-acting doors when the door is stopped by a frame-mounted door stop—common on cased-opening frames where a door stop prevents the door from swinging through.
- No automatic return to center: A center-hung pivot is not spring-loaded. If you need the door to return to a closed or centered position, you need a floor closer or an overhead concealed closer in the system—the pivot alone will not do it.
- Weight range: Sets typically run from 300 lbs to 1,000 lbs depending on the bottom pivot configuration.
- Fire rating: Standard center-hung pivot sets are generally not UL listed for fire-rated assemblies—confirm with your specific pivot line before placing on a fire door schedule.
- Common applications: Double-acting corridor doors in schools and hospitals, retail stockroom pass-through doors, and industrial facility doors that see two-way foot traffic.
The Overhead Concealed Closer Connection
If the opening uses an overhead concealed closer—a common combination on institutional and commercial projects—the closer template is not interchangeable between pivot types. Center-hung pivot installations require a center-hung pivot template. Offset pivot installations require an offset pivot template. These are different mounting geometries specified in the closer manufacturer's installation documents. Confirm the pivot type before the door is prepped and before the closer is ordered, or you will be reordering one or the other in the field.
Preferred closer lines compatible with pivot applications include Norton overhead concealed closers and Corbin Russwin concealed units, among others available through DoorwaysPlus.
Intermediate Pivots: When You Need More Than Top and Bottom
For taller or heavier doors, a top-and-bottom pivot set is not enough on its own. The standard rule is to add one intermediate pivot for every 30 inches of door height above 60 inches. Intermediate pivots are not load-bearing—they maintain door alignment and prevent flex along the hinge edge on tall doors. On electrified openings, an electrified intermediate pivot is one method for passing low-voltage wiring from the frame to the door without an exposed door cord.
Quick-Reference Comparison
- Offset pivot: Single-acting only | Handed (LH or RH required) | 3/4" or 1-1/2" offset | Fire-rated sets available up to 3-hour | Aluminum storefronts, lead-lined doors, heavy exterior doors
- Center-hung pivot: Double-acting (or stopped single-acting) | Non-handed | Pivot centered in door thickness | Generally not fire-rated | Cafeteria, kitchen, corridor, and industrial pass-through doors
What to Confirm Before You Order
Before specifying or ordering a pivot set, answer these four questions:
- Single-acting or double-acting? Double-acting requires center-hung. Single-acting can use either, depending on the application.
- Fire-rated opening? Verify UL listing on the specific pivot set. Most center-hung sets are not listed for fire-rated assemblies.
- Door weight and height? Select the set capacity accordingly and calculate intermediate pivot count.
- Overhead concealed closer on the schedule? Confirm the closer template matches the pivot type before the door is prepped.
Pivot Sets Available at DoorwaysPlus
DoorwaysPlus carries pivot sets from preferred lines including Rockwood, Hager, McKinney, and ABH Manufacturing, covering offset and center-hung configurations across a wide range of door weights and fire-rating requirements. If your opening is unusual—lead-lined, oversized, or paired with a floor closer—our team can help you match the right set to the frame condition before the order ships.