Bommer HS83HD - 83" Half Surface Continuous Geared Hinge
These 83" long half surface Continuous Gear Hinge are normally used on door retrofit and renovations but also used in new construction when door mortising is not practical. Half Surface Hinge - Door Frame Jamb flange is applied to door frame end surface (concealed surface). Door flange is surface applied to door face.
Bommer HS83HD - 83" Continuous Gear Hinges are packaged complete with mounting hardware. Door frame side flange uses #12-24 x 7/16" Type C screws that are self threading. Door side flange is thru-bolted with 1/4-20 x 1-5/8" low profile head screws. Shoulder bolts are used in conjunction with thru-bolts. Eight pan head #12 x 3/4" self drilling screws also used.
A Continuous Geared Hinge consists of two full-height, paired and geared leafs. Each geared leaf rotates evenly from top to bottom, riding on superior Delrin Teflon bearings. The geared leafs and bearings are held together by a full length channel cap. This assembly retains the smooth, clean lines of the door and frame, while easily supporting heavy vertical loads.
Advantages to Bommer Continuous Gear Hinges:
1. Distributes load stress uniformly along the full length of the door
2. Diffuses wear and tear from closer kickback shock and elminates door sagging and binding
3. Attaching screws are along the full length, preventing warpage
4. Gear design offers little effort to open a large heavy commercial door
5. High degree of security against prying and force.
6. Offers a closed gap finger-guard, providing safety against pinched fingers, especially suited for public locations where children are present.
7. UL Fire labeled 3-hour A-label.
8. Made in the USA
Specifications for Bommer HS83HD
- Hinge Length: 83"
- Hinge Material: Aluminum
- Number of Bearings: 27
- Maximum Door Weight: 540 lbs. (Heavy Duty)
- Maximum Door Height: 6'-10" (83")
- Hinge Type: Half Surface Continuous Gear Hinge
- UL Fire Rated
- Packaged with Installation Hardware
- BHMA Certified Grade 1
- Lifetime Guarantee
For additional information and specs on Bommer Continuous Geared Hinges:
Bommer Continuous Geared Hinge Information (PDF 6MB - 6-pages Color).
*Normally this is a special order item. Please allow 3-5 weeks for delivery.
** Sold individually (1 Hinge).