Overview
Restore smooth, reliable door operation with this Universal Heavy-Duty Door Closer Arm Replacement Kit. Designed as a direct retrofit and replacement arm assembly for overhead hydraulic surface-mounted door closers, this heavy-gauge steel scissor arm system replaces bent, worn, stripped, or rusted closer linkage arms on commercial storefronts, fire doors, schools, and institutional facilities. Available in three standardized sizing models (Small 051, Medium 061, and Large 062), it features a precision square spindle hub connection, a heavy-duty forged main arm, and a telescoping threaded adjustable forearm with a pivoting jamb-mounting shoe bracket for exact pre-load tensioning and precise closing angle adjustment.

Key Features

• Universal Commercial Retrofit: Direct replacement scissor arm compatible with major commercial overhead hydraulic door closers on fire exits, interior doors, and exterior entrance frames.
• Heavy-Gauge Forged Carbon Steel: Fabricated from high-tensile solid steel with a corrosion-resistant galvanized/zinc-plated silver finish to resist flexing, bending, and outdoor weathering.
• Precision Threaded Length Adjustment: Fine-pitch threaded turnbuckle rod allows effortless micrometer adjustment of arm length to ensure optimal door latching power and tight sealing.
• Standardized Spindle Square Hubs: Precision-broached square drive sockets (10.5 mm × 10.5 mm on models 051/061; 12 mm × 12 mm on model 062) ensure slip-free engagement with the closer pinion shaft.
• Slotted Jamb Bracket Shoe: Pivoting mounting foot features slotted fastener channels (35–48 mm adjustable hole spacing) for quick alignment with existing door frame drill holes.
• Three Engineered Sizing Profiles: Offered in Small (051), Medium (061), and Large (062) arm lengths to accommodate varying door widths, reveals, and jamb mounting depths.

Technical Specifications

• Product Type: Commercial Overhead Door Closer Arm Replacement Assembly
• Material: High-Strength Forged Carbon Steel, Precision Steel Pivot Rivet & Fasteners
• Surface Finish: Corrosion-Resistant Galvanized Silver Zinc Plating
• Arm Configuration: Two-Piece Articulated Scissor Arm (Rigid Main Arm + Threaded Adjustable Forearm)
• Available Model Sizes & Dimensions:
  • No. 1 (Small 051): Main Arm Length: 223.5 mm (8.80 in); Adjustable Forearm: 183–263 mm (7.20–10.35 in); Spindle Hub: 10.5 × 10.5 mm square; Shoe Bracket: 57 mm (Hole Spacing: 35–45 mm)
  • No. 2 (Medium 061): Main Arm Length: 245 mm (9.65 in); Adjustable Forearm: 185–270 mm (7.28–10.63 in); Spindle Hub: 10.5 × 10.5 mm square; Shoe Bracket: 57 mm (Hole Spacing: 38–48 mm)
  • No. 3 (Large 062): Main Arm Length: 275 mm (10.83 in); Adjustable Forearm: 248–335 mm (9.76–13.19 in); Spindle Hub: 12.0 × 12.0 mm square; Shoe Bracket: 57 mm (Hole Spacing: 35–45 mm)
• Fastener Compatibility: Standard frame mounting screws (M5/M6)
• Recommended Applications: Commercial overhead hydraulic door closers, steel fire exit doors, aluminum storefronts, institutional corridors, and industrial access doors

Wholesale & OEM Capabilities

• Packaging: Bulk export master cartons containing individually polybagged arm sets with protective end caps.
• B2B Supply & Distribution: Volume supply directly from factory for commercial door hardware contractors, facilities management distributors, and locksmith supply companies.
• OEM Customization: Custom powder-coated finishes (Matte Black, Architectural Bronze, White), bespoke spindle drive hub dimensions (splined or custom square sizes), and private-label packaging available for volume orders.