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UL Listed 4 Ball Bearing Fire Rated Stainless Steel Butt Door Hinge
- Product Information
SS008FR‑4BB UL‑Listed 4‑Ball‑Bearing 5x4.5x4.6mm Fire‑Rated Stainless Steel Butt Door Hinge
| Specification | Parameter |
|---|---|
| Product Type | UL‑Listed 5x4.5x4.6mm 4‑Ball‑Bearing Five‑Knuckle Fire‑Rated Stainless Steel Full‑Mortise Butt Door Hinge |
| Operation | Four‑ball‑bearing long‑lubrication quiet swing, five‑knuckle heavy‑duty structure, full‑mortise butt installation, reversible non‑handed left‑right fit, multiple pin & hole‑template options, UL‑Listed UL10C & ANSI/BHMA‑156.1‑2000 & EN1935 fire‑safety certified, meets NFPA80 |
| Material | 4.6mm stainless‑steel hinge leaf(201/304/316 optional), five‑knuckle housing, high‑precision four‑unit ball‑bearing assembly, anti‑rust & anti‑discoloration surface finishing |
| Core Functions | Five‑knuckle heavy‑duty build, four‑ball‑bearing long‑term lubricated swing, reversible non‑handed mounting, multi‑finish / pin / hole‑template option, max 120kg load capacity, 3‑hour fire‑rated, 200000‑cycle heavy‑duty durability |
| Application | Wooden / Metal / Steel / Fire‑Rated Interior‑Exterior Door Assemblies, commercial and residential fire‑door hardware projects |
| Production Capacity | 200000 Units / Month |
| MOQ | 500 Pairs |
| Sample Time | 5‑7 Working Days |
| Lead Time | 30‑35 Days |
| Packing | 1 Pair / White Box, Standard Export Carton |
Application Scenarios
Heavy‑Duty Commercial Fire‑Door Installations
SS008FR‑2BB UL‑listed 5x4.5x4.6mm five‑knuckle 4‑ball‑bearing fire‑rated butt hinge is engineered for heavy‑traffic commercial and multi‑unit residential fire‑rated door‑sets. Optional 201/304/316 stainless‑steel grades provide reliable anti‑rust and anti‑discoloration performance. Five‑knuckle heavy‑duty construction together with four‑ball‑bearing system keeps long‑term lubrication for consistent quiet door swing. Max supporting door weight up to 120KG per hinge pair. Various pin choices and diverse hole‑template layouts can match different door‑frame requirements. Reversible non‑handed design lowers SKU inventory pressure for large‑volume tender orders. UL‑Listed UL10C, ANSI/BHMA‑156.1‑2000 and EN1935 certifications satisfy North‑American and European fire‑safety building‑code requirements for stainless‑steel fire‑rated butt‑hinge assemblies.
Multi‑Material Heavy‑Door New‑Build & Renovation
This five‑knuckle multi‑grade stainless‑steel 4.6‑mm 4‑ball‑bearing fire‑rated butt hinge passes strict 200000‑cycle heavy‑traffic durability test. Excellent anti‑rust and wear‑resistant properties. It performs steadily on wooden, metal, steel fire‑rated interior‑exterior door‑sets in new‑construction and retrofit renovation commercial‑residential hardware assignments.
Architectural Hardware Tender Specification Projects
Full matching mounting‑screw accessories included. Standard full‑mortise butt mounting with reversible non‑handed configuration. Multiple pin selections, diverse hole‑template patterns and abundant decorative surface‑finish options available. UL compliance datasheet, installation drawings and test‑related documentation can be supplied for tender‑submission documentation for commercial‑residential fire‑safety building‑projects.
Heavy‑duty five‑knuckle hinge housing, optional 201/304/316 stainless‑steel hinge leaf with four‑precision‑ball‑bearing internal assembly; long‑term lubricated swing performance, anti‑rust, anti‑discoloration and wear‑resistant property for heavy‑usage fire‑rated door‑operation
Standard dimension 5x4.5 inch, leaf thickness 4.6mm; maximum load‑bearing capacity up to 120KG per hinge pair
Classic full‑mortise butt‑hinge installation, true reversible non‑handed left‑right universal fit; multiple pin‑type & hole‑template selections plus rich decorative‑finish options match different interior‑design themes
UL‑Listed UL10C 3‑Hour fire‑rated, complies with ANSI/BHMA‑156.1‑2000 & EN1935:2002, conforms to NFPA80, passes 200000‑cycle heavy‑duty durability test
Standard full‑mortise butt‑type mounting; heavy‑duty fire‑safety optimized for wooden, metal, steel fire‑rated interior‑exterior door assemblies
Complete matching mounting‑screw accessories supplied; monthly capacity 200000 units for B2B wholesale fire‑door‑hinge bulk tender‑orders
Standard quality warranty against manufacturing defects of stainless‑steel hinge‑leaf, five‑knuckle housing and internal four‑ball‑bearing components
Bulk wholesale supply for architectural‑construction and fire‑safety‑door tender‑projects; custom finish, custom‑size, custom‑pin‑style and hole‑template variant options are available
2D installation drawing and product‑performance‑specification datasheet including UL‑ANSI‑EN compliance statement available for tender‑submission documentation




