XT SERIES Clark Masts Air-operated logo
Australian Distributors: Portable Masts Australia Pty Ltd - Contact Details

XT SERIES - THE MOST POWERFUL AIR-OPERATED CLARK MAST PORTABLE MASTS AVAILABLE - UP TO 150 Kg HEADLOADS, USING 203 MM (8") BASE TUBES
ClarkMasts XT Series Portable Mast Dimensions ClarkMasts XT Series Portable Mast - Vehicle Deployed

The XT Series are Clark Masts "HIGH POWER" extra heavy duty telescopic portable masts with the capability of lifting 150 kilograms (special versions to 300 Kg can be supplied) to 10 metres or 36 kg to 18 metres (special versions to 30 metres & 50 Kg headload capability can be supplied).

As a member of Clark Masts Phase 2 series, ClarkMasts XT portable mast series also have the un-guyed rigidity which has become increasingly necessary for today's equipment, particularly when microwave dish antennas are used. Electronic News Gathering, Line of Sight Links, small Radars, surveillance equipment of all kinds, portable phone cells, these are the applications in which Clark Masts XT series portable masts perform best.

The XT portable mast's 203 mm (8 inch) base section diameter makes the mast too large to set up manually. In almost all cases they are built into or onto vehicles or shelters in the vertical position. The top of each XT portable mast is provided with a substantial flange for the attachment of large headloads. Each mast section may be optionally factory fitted with locking (combined) collars for semi-permanent erection if desired, allowing the mast to remain extended without an air supply for long periods of time. For minimum retracted height the Plain (non-locking) Collar version may be ordered.

When the Clark Masts XT portable mast is fully extended a locking key system gives high torsional strength. To increase the stability of headloads with large wind area in high wind conditions, Guys may be attached to the standard factory fitted Guy Collars. However the real advantage of the XT masts is their unguyed stability for work in average wind conditions. All Clark Masts XT series portable masts are supplied mounting hardware for either turning or non-turning applications.

A range of mounting and guying Accessories are available for the Clark Masts XT Series portable mast. Also a number of Air Supply options are available, including Hand Pumps, 12/24 Volt DC and 230/110 Volt AC Air Source/Mast Controllers, Petrol powered compressors and accessories to allow a vehicle's air source to be used.

All of these qualities give the Clark Masts XT extra heavy duty portable mast series equal suitability for use in civilian and military applications, as evidenced by its choice for the advanced Verdi-2 Military Reconnaissance vehicle shown below.

For applications where an extra heavy duty mast and very rapid deployment is required, Clark Masts 804 Heavy Duty Trailer Mast Series offer XT portable masts trailer mounted ready for fast turn around operations.


ClarkMasts XT Series Portable Mast in military service
ClarkMasts XT Series Portable Mast in service

 

CLARK MASTS XT SERIES, EXTRA HEAVY DUTY PORTABLE 
MASTS FOR EXTRA HEAVY DUTY TASKS - SUPPORTING 
MICROWAVE DISHES & CELLULAR PHONE ANTENNAS

 

Technical Specifications on standard XT Series Masts
Model XT6 XT8 XT10 XT12 XT15 XT18 XT26
Plain (Non-locking) Collar
Mast Cat #.
15074 15073 15069 15070 15071 15072 18721
Retracted Height of Plain
Collar Mast (mm)
1420 1700 1975 2305 2805 3391 4876
Combined (Locking) Collar
Mast Cat #.
15055 15054 15050 15051 15052 15053 18715
Retracted Height of
Combined Collar Mast (mm)
1560 1840 2115 2445 2945 3531 5016
Extended Height (m) 6.0 8.0 10.0 12.0 15.0 18.0 26.0
Diameter of Top Section (mm) 114.3
(4.5")
114.3
(4.5")
114.3
(4.5")
114.3
(4.5")
114.3
(4.5")
114.3
(4.5")
114.3
(4.5")
Diameter of Base Section (mm) 203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
Number of Sections 8 8 8 8 8 8 8
Weight of Mast (Kg) 60 70 85 100 125 140 180
Maximum Vertical
Headload (Kg)
130 120 110 100 100 60 50
Time to extend mast with 50 Kg
headload using Model 200 (min)
1.75 2 2.5 3 4 5.5 7.0
Diameter of Headload
Mounting Flange (mm)
190 190 190 190 190 190 190
Mast Working
Air Pressure (Kg/cm3)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)


Technical Specifications on non-standard XT Series Masts
Model XT
SSSS4
XT
SSS5
XT
SSSS6
XT
10S
XT
14S
XT
18SS
XT
20S
XT
22SS
XT
26
XT
30S
Plain (Non-locking) Collar
Mast Cat #.
19054 18906 18975 18621 18251 18312 ---- ---- 18721 18722
Retracted Height of Plain
Collar Mast (mm)
1555 1720 2200 2012 2343 2979 ---- ---- 4876 4913
Combined (Locking) Collar
Mast Cat #.
18591 18591 18976 18620 18251 18306 19814 19889 18715 18716
Retracted Height of
Combined Collar Mast (mm)
1615 1800 2260 2172 2503 3059 3500 3550 5016 5073
Extended Height (m) 4.0 5.0 6.0 11.09 13.8 18.0 20.0 22.0 26.0 30.0
Diameter of Top Section (mm) 165.1
(6.5")
152.4
(6")
165.1
(6.5")
101.6
(4")
101.6
(4")
89.9
(3.5")
101.6
(4")
89.9
(3.5")
114.3
(4.5")
101.6
(4")
Diameter of Base Section (mm) 203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
203.2
(8")
Number of Sections 4 5 4 9 9 10 9 10 8 9
Maximum Vertical
Headload (Kg)
150         60 50   50 35
Diameter of Headload
Mounting Flange (mm)
190 190 190 190 190 190 190 190 190 190
Mast Working
Air Pressure (Kg/cm3)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)
1.4
(22 PSI)

For more information on delivery lead-times and pricing e-mail: Portable Masts Australia Pty Ltd

The XT Series' heavy duty nature make these portable masts very suitable for
high stability un-guyed applications with large side area loads such as
microwave dish and cellular antennas exhibit.
ClarkMasts XT Series Portable Mast Wind Loading Figures

Mast Collar and Base
Options

Clark Masts Plain (non-locking) Collar mast option

Clark Masts Clamp (Locking) Collar mast option

Plain (Non-Locking)
Collars

Clamp (Locking)
Collars

Clark Masts Fixed (Non-rotatable) Base mast option

ClarkMasts Rotatable Base mast option

Fixed (Non-Rotatable)
Base

Adjustable (Rotatable)
Base

 

BRIEF PHASE 2 MAST MECHANICAL SPECIFICATIONS
 (INCLUDING XT SERIES PORTABLE MASTS)

Telescoping sections:
High strength Corrosion-resistant Aluminium Alloy.

Surface Finish:
Anodised natural colour or dyed.

General Finish:
Standard paint colour - white or NATO green. Other colours, including
desert sand, to order.

Maximum Operating Air Pressure:
1.7 bar (25 psi or 1.8 Kg/cm sq.).

Operating Temperature:
+55 degrees to -40 degrees C (dry).

Storage Temperature:
+65 degrees to -55 degrees C (dry).

Icing Risk:
Similar to any other mechanical device in conditions of temperature
change between +3 and -5 degrees C. Without precautions 5%. With
precautions <1%.

Air Leakage:
Expected pressure drop: Zero to 0.4 bar (0 to 6 psi).

Environmental Conditions:
Clark masts have been tested extensively in nature's test house for
Tropical Life, Salt Atmosphere, Dry Heat, Damp Heat, Driving Rain,
Shock, Vibration as well as High and Low Temperatures. Further
more, by following simple procedure there are no limitations for
transport in unpressurised aircraft.

Quality Assurance Standards:
AQAP 120 including ISO 9002.

  

A range of mounting options, as shown below, are available for all of Clark Masts
portable masts including the XT Series. For full details E-mail:
Portable Masts Australia Pty Ltd
ClarkMasts XT Series Portable Mast Mobile Mounting Arrangements


ClarkMasts XT Series Portable Mast - the BIG mast

 

The photo at left is of a Clark Mast model XT18 extra heavy duty portable telescopic mast, (an 18 metre portable mast with 60 Kg headload capability) and gives an ideal of the scale of the XT portable mast Series. Although they are normally vehicle mounted they may also be trailer or shelter mounted. Furthermore, longevity has always been a byword for Clark Masts. Many customers still operate masts 30-40 years old and are able to keep them in perfect order with readily available spares from Portable Masts Australia Pty Ltd when necessary.

 

Next section, 802 Trailer Series Masts
Go to Phase 2 Series Information
Clark Mast General Accessories
Clark Mast Mounting and Guying Information
Equipment for Air Supply
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For full Technical details and pricing E-mail Portable Masts Australia Pty Ltd

This page was last updated 14-01-2017


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