251 – 2557 Series – Slide Rail Cover & Heavy Duty

The Lockwood 2557 Series is engineered for extremely heavy internal and external doors, offering exceptional durability and smooth performance. Designed for high-traffic commercial environments, the system supports doors up to 160kg with a maximum leaf width of 1600mm (standard arm installation).

Key Features:

• Adjustable closing force size EN 5–7 (EN1154 compliant)

• Separate valves for closing and latching speed

• Back Check (BC) included as standard

• Wide operating temperature range: –35°C to +45°C

• Adjustable arm height (14 mm)

• Dual pressure-relief valves for overload protection

• High-performance die-cast aluminium body

• Note: Parallel arm (push side) installation is not available for this model

Variants

251 Series – Interior Plate – Flush Pull – Custom Plate

• 25131NNRCH2SS

2516 Series – Door Closer Components

• SP2516-271SSS – Slide Rail Cover – Stainless Steel

• SP2516-171FSSS – Cover

• SP2516-806072 – Slide Piece

• SP2516-805878 – Slide Rail End Cap – Silver (For 2516 & 2514 Series)

2557 Series – Heavy Duty Components

• SP2567-810002 – Hardened Spindle Kit

• SP2567-197SIL – Heavy Duty Arm Assembly