BEST BB855 Steel Double Weight Concealed Ball Bearing Prison Hinge

STANLEY SECURITY BB855 STEEL DOUBLE WEIGHT CONCEALED BALL BEARING PRISON HINGE

The Stanley Security BB855 is a heavy-duty prison hinge designed for high-security applications. Constructed from durable steel, it offers exceptional strength and durability to withstand rigorous use. The double weight design provides added reinforcement and resistance to tampering or forced entry attempts. Equipped with concealed ball bearings, it ensures smooth and silent operation while maintaining security. The BB855 is specifically designed for prison or detention center doors where robustness and enhanced security features are essential. It is a reliable choice for high-risk environments where stringent security measures are required.

FEATURES

•  For lead-lined doors to x-ray rooms and other exceptionally heavy doors
• Made of double weight steel capable of carrying doors weighing up to 800 lbs. (363 Kg) (Based on a 3' x 7' door with 3 hinges)
• Each of the 2 concealed hardened steel races contains sixteen 1/8" (3.2mm) hardened and ground steel balls which are assembled within a jacket
• Concealed bearings are well lubricated insuring smooth, long lasting operation
• Rolled knuckles are welded and machined
• Typically made not swaged, no holes (application A) for full surface applications, or for full mortise (applications C) wapplication. All other configurations are made to order

Finish Options

• 600 - Primed for Painting

RESOURCES & DOWNLOADS

• Stanley Security Catalog
• Stanley Security Detention Hardware Catalog
• Stanley Security Installation Guide
• Stanley Security Hinge Size Chart