Spring Balances

Central to the Vertex™ offering is the spring balance, a specially engineered helix rod that, thanks to its spiral movement, takes on up to 80 percent of the operational force – ensuring ease of opening with no sticking sashes for all users.

    3 results

    • Caldwell Spiral Balance Range

      The Caldwell range of wind-up balances for sash windows
      allow window fabricators to provide exactly what is required for
      mechanical assistance, longevity & economy.

      Spiral balances are single sprung and have been designed to
      allow vertical sash windows to slide easily up & down and hold
      stationary, as required.

       

      The Caldwell comprehensive Spiral range of spring balances
      includes, Spirex, Spiralift and Alumatilt, Alumatilt Heavy Duty.

      • Range includes 14mm Aluminium Mill Finish outer tube and 16mm  white PVC or Brown PVC outer tubes
      • Suitable for Aluminium, PVCu, Timber and windows
      • 5 year mechanical guarantee
      • Spiral balances are colour coded with white, blue, red and black couplings that determine the weight/ length combination

       

      • Spirex balances for sashes weighing from 1kg to 13.5kg and in length 9 inches to 60 inches.
      • Spiralift balances for sashes weighing 14kg to 18kg and in length 9 inches to 60 inches
      • Alumatilt for sashes weighing from 1kg to 13.5kg and in length 8inches – 60inches
      • Alumatilt Heavy Duty for sashes weighing from 14kg to18kg and in length 8inches to 48inches

      Specifications:

      • 5 year mechanical guarantee

    • Caldwell Ultralift (UL6) Spring Balance

      Ultralift sash window balances are double sprung, offering increased efficiency and a smoother operation. The double-sprung design offers the end user up to 70% increased mechanical advantage compared with standard operation. 

      Ultralift balances can be specified for use in both tilt-in and standard sash window designs

       

      Features:

      • The range includes double-sprung and single-spring options 
      • Suitable for sashes weighing between:
        • ​Standard: 4.5Kg – 27Kg
        • Heavy Duty: 27.5Kg to 31Kg
      • Tilt and non-tilt sash options
      • Supplied in 17mm diameter white PVC-U tubes as standard
      • Brown, Grey, Cream, and Black clip-on tubes available -  when using clip-on tubes please allow for an additional 2mm to the overall diameter
      • Suitable for PVCu, Timber, Aluminium and Composite Windows

       

      Easy identification 

      Ultralift balances are stamped with the part number, date of manufacture & sash weight they are designed to carry. This can be found on the balance tube near the top fixing location. 

       

      Specifications

      • 10 year mechanical guarantee
      • Tested to AAMA class 5

    • Caldwell Torso II Spring Balance

      Offering torque-free operation for smoother movement, Torso balances are renowned for their reliability.

      Torque-free movement is especially important for heavier sashes, reducing the chance of bi-axial strain which significantly improves the performance of the sliding action. 

      Features:

      • Double-sprung as standard providing extra mechanical assistance
      • Torso II offers up to 80% reduction in manual applied force 
      • Suitable for sashes weighing between 3kg and 45Kg
      • Tilt-in and non-tilt sash options
      • Supplied in 17mm diameter PVC-U tubes in white, brown, grey, and cream
      • Black outer clip-on tubes are available
      • Suitable for PVCu, Timber, Aluminium, and composite windows

      Specifications

      • 10 year mechncial guarantee
      • Tested to AAMA class 6

       

      Easy identification 
      Torso II spring balances are stamped with the part number, date of manufacture & sash weight they are designed to carry. This can be found on the balance tube near the top fixing location. 

       

       

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