The Pneumatic Telescopic Hilomast - BR Mast Series

Whilst many masts in the Hilomast range can be used for Broadcast Applications, 6 standard configurations are offered to meet the particular needs of the ENG vehicle market. The BR25 and BR30 models have 6" base tubes whilst the BR42/BR48/BR52/BR56 models have a base diameter of 9" all of which are pneumatically operated by custom built air compressors.

These masts do not have locking collars but have special engaging torque screws fitted into each of the collars to resist the torsional loads when the masts are fully extended. The BR series of masts is for special applications where high head loads are required or where maximum directional stability is necessary.

The whole range of NY masts are also available without the locking collars, please contact our sales team to discuss your requirements.

Standard Features:

  • The use of highly accurate drawn aluminium tube ensures optimum seal performance and minimum leakage.
  • A full length keyway machined in each of the extending tubes prevents relative rotation between them, the key in this keyway will break before any damage is done to the tube section of the mast, in the event of excessive torsional load.
  • Operation over a wide temperature range -22°F - 122°F.
  • Low Pressure (14-16 p.s.i) operation, to minimise leakage and seal failure.
  • Drain holes to eject water and minimise damage to ice formation.
  • Clear anodised tubes and collars painted any colour.
  • Maganetic switch to warn of incomplete retraction.
  • Non rotating base plate and roof bearing kit.

Specificaton for Locking Collar models.

Mast BR 25 BR 30 BR42 BR48 BR52 BR56
Height Extended (Feet) 25 30 42 48 52 56
Height Retracted (Feet) 6 7 7.08 8.5 8.5 9.7
Number of Sections 6 6 9 8 9 8
Diameter of Top Section (Inches) 3.5 3.5 3 1/2 4 3.5 4
Vertical Headload(lbs) 150 110 150 200 175 200
Max Wind Speed Unguyed (mph) 91 74.5 62.6 56 45 49
Max Wind Speed Guyed (mph) - - - - - -
Top Guy Ref. Number - - - - - -
Basic Weight of Mast (lbs) 110 120 264 280 300 330

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