Your browser is out-of-date!

For a richer surfing experience on our website, please update your browser. Update my browser now!


Series AJ Junior Worm Gear

Our series A junior worm gear range is offered in unit sizes 280, 410, 510, 610, 730 and 860 based on a single universal case for each size, giving a high degree of common parts and interchange ability.

Documentation Product Enquiry Where to buy?
  • Product Options
    Unit Sizes 280, 410, 510, 630, 720, 860
    Input Power Up to 16 HP (12 kW)
    Output Torque Up to 7600 (950 Nm)
    Gear Ratios Up to 70/1 in single stage, 4900:1 in double reduction
    Motor Sizes IEC Frames from 63 to 132; NEMA Frames from 56 to 215
  • Full Description

    Our series A junior worm gear range is available in 6 sizes with a capacity of 12 kW/ 950Nm. Covering a centre distance of 28mm to 86mm.

    All units are designed with hollow output bores, plug-in solid output shafts can be fitted allowing handing to be changed without dismantling the unit. Double extended output shafts are also available, along with a range of output flanges.

    Series A Junior gives a choice of 10 ratios from 5/1 to 70/1 and important features include high efficiencies and load carrying capacities combined with long life and reliability. All units are lubricated for life to reduce maintenance to a minimum.

  • Features & Benefits

    Double Reduction Units (worm/worm)

    These units consist of a standard single reduction unit with a smaller shaft mounted Series A unit fitted to the input shaft. The range extends the ratios available up to the maximum of 4200/1 making them ideal for fitting to slow moving machinery. As with the single reduction units they are available in under driven, over-driven and vertical types, foot mounting and shaft mounting. All lubricated for life.

    Motorised Units

    Units are designed to be close coupled with standard dimension NEMA motors or are also available to accept standard dimension IEC motors.

    Lubricated for life - fit and forget

    Series A Junior units are factory filled with synthetic lubricant which means.

    • No oil level checks, topping up, draining or re-filling
    • No routine maintenance or danger of starting up without lubricant
    • They will mount in any location, however inaccessible
    • They are particularly suitable for locations where non contamination through leakage is essential.

    For units running at input speeds below 500 rev/min with either the input or output shaft vertical, also for the second stage of all double reduction units irrespective of shaft disposition the lubricant level is simply increased - see lubrication instructions.

    Features Benefits
    Accepts standard IEC/NEMA motors Non dedicated industry standard motor readily available. Free motor brand choice
    Cast Iron Case Robust Design, minimal service . Increased plant availability
    High torque capacity Allows downsizing. Reduced costs
    Lubricated for life (A junior) Fit and forget. Reduced maintenance costs
    Ready built with modular accessories (A Junior) Fast customisation and availability.
    Atex compliant Can be supplied against Group 2 or 3 for surface industries in designated hazardous locations, Zones 1 and 2 for gases, vapours and mists and Zones 21 and 22 for dust.