QTM Series
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THE HANDY LOW COST PORTABLE MASTS WITH 101 USES
The Clark QTM lightweight air-operated telescopic mast series was first introduced back in 1959. There was the need for an easily handled portable mast. Then, as now, the distinguishing feature is the attached handpump. This method of extension makes the mast self contained, lightweight, easy to extend and very gentle in retraction. QTM series masts are used for lifting antennas, sound measurement, air polution monitoring equipment and a great deal of other apparatus which does not need to turn. Normally the QT mast is not intended for applications where the headload must be turned by rotating the whole mast. For such applications the H, P or PX series should be used. There is also a full range of Accessories available, including the free standing tripod shown above, as well as guy & guy pickets for use in strong winds, weather covers, vechicle mounting and shelter attachment brackets.
Being the most common in-service Clark mast, the QTM series enjoy short delivery leadtimes. Their higher usage also makes them one of the lowest cost mast series available. For this reason, when considering a Clark mast for your application, we advise you to consider a mast from the QTM Series first.
Below are shown brief QTM series specifications and pricing.
A very simple system of masts which has been in continuous production since 1959, QT masts have found their applications in every corner of the world.
Why are they so popular?
The answer lies in the concept. Pneumatically extended, telescopic, aluminium
alloy, makes the principle simple, as our competitors have found. Being
complete with attached hand pump, they are a complete system in themselves.
What turns simplicity into sophistication are the details, included on
every mast.
Clamping collars which make erection permanent at any height, up to the maximum of the mast, independent of air pressure. Guy collars are already fixed at the most appropriate height. A 24 mm clamp collar that really clamps the spigot of the headload and releases instantly when required, every time, year after year. Also to be mentioned is the wide range of standard accessories which makes this mast series truly universal.
Normally the QT mast is not intended for applications where the headload must be turned by rotating the whole mast. For such applications the H, P or PX series should be used.
QT Masts are silent, smooth and easy to operate in every application.
MK IV Tripod - Cat. No. 9427
This foldable tripod stand offers the easiest method of mounting any
QT mast on open ground.
MK V Tripod - Cat. No. 25164
This is a more compact version of the above. Suitable for mounting masts
up to 6 metres high.
Terylene Guy Assemblies
The pre-wound, ready to use terylene guy assemblies make it very easy
to safely guy a mast. Every guy consists of two quick-release snap hooks,
guy tensioner and a storage spool. Tensions at ground level with the minimum
of effort.
| Cat. No. | Length | Suitable for masts |
| 6731 | 13.4 metres | from 4 to 8 metres |
| 6728 | 15.7 metres | up to 10 metres |
| 6110 | 18.2 metres | up to 12 metres |
| 7134 | 24.3 metres | up to 15 metres |
Spiral Picket - Cat. No. 16166
Galvanised steel picket
51 cm long.
Canvas Cover - Cat. No. 2936
Protects the top collar of a retracted mast.
Receiver Hitch Mount and Wheel Mount - Cat. No. QTM RHM/W
Two New Ways of Mounting Mast.
Special Models
In addition to the models shown in the range table, many QT masts have been
supplied modified for special use. We have a wide range of mounting brackets
whose availability depends on demand.
| Mast Model | QT 4/HP | S QT 4/HP | QT 6/HP | BS QT 6/HP |
| Catalogue No. | 8285 | 9504 | 8286 | 9459 |
| Extended height (m) | 4.26 | 4.00 | 6.11 | 6.13 |
| Retracted height (m) | 1.12 | 1.00 | 1.49 | 1.89 |
| Bottom section diameter mm (inches) | 63.5 (2 ½") | 76.2 (3") | 63.5 (2 ½") | 63.5 (2 ½") |
| No. of sections | 6 | 7 | 6 | 4 |
| Max. headload recommended (kg) | 4.5 | 6 | 4.5 | 10 |
| Weight of mast (kg) | 6.3 | 7.5 | 8.2 | 7.3 |
| Finish | Yellow paint | Yellow paint | Yellow paint | Yellow paint |
| Mast Model | BS QT 6/HP | CS QT 6/HP | QT 9/HP | S QT 9/HP |
| Catalogue No. | 9486 | 10865 | 8287 | 9451 |
| Extended height (m) | 5.88 | 5.98 | 9.02 | 8.70 |
| Retracted height (m) | 1.19 | 1.89 | 1.96 | 1.96 |
| Bottom section diameter mm (inches) | 76.2 (3") | 76.2 (3") | 63.5 (2 ½") | 76.2 (3") |
| No. of sections | 8 | 4 | 6 | 6 |
| Max. headload recommended (kg) | 4.5 | 20 | 4.5 | 10 |
| Weight of mast (kg) | 9.0 | 10.0 | 10.5 | 12.2 |
| Finish | Yellow paint | Anodised natural | Yellow paint | Yellow paint |
| Mast Model | S QT 10/HP | QT 12/HP | S QT 15/HP |
| Catalogue No. | 17921 | 8388 | 9479 |
| Extended height (m) | 10.00 | 11.40 | 15.00 |
| Retracted height (m) | 2.18 | 2.02 | 2.80 |
| Bottom section diameter mm (inches) | 76.2 (3") | 76.2 (3") | 76.2 (3") |
| No. of sections | 6 | 8 | 7 |
| Max. headload recommended (kg) | 10 | 2.5 | 2.5 |
| Weight of mast (kg) | 13.0 | 13.2 | 18.0 |
| Finish | Anodised natural | Yellow paint | Yellow paint |
Note: All figures subject to confirmation at time of order.
Meteorological Station
Easy check or maintenance of instruments.
Mobile Police Communications
Make links with cars or foot patrols using QT mast.
Atmospheric Pollution Control
Equipped with a sampling device, the mast is set downwind of the suspect source.
Sound Monitoring Station
Replaces perception of undesirable sound with actual measurements.
Complete QTM Series Technical data is also available. Masts from 4 to 15 metres are available for use in applications from emergency lighting
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Email for PRICING. FOB - ENGLAND. Import Duties, Custom Charges and Brokerage Fees NOT INCLUDED.
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| MAST MODEL | QT 4M/HP | S QT 4M/HP | QT 6M/HP | S QT 6M/HP | BS QT 6M/HP | |
| CAT. NO. | 8285 | 9504 | 8286 | 9459 | 9486 | |
| EXT. HEIGHT | 4.26M | 4.00M | 6.11M | 6.13M | 5.88M | |
| RET. HEIGHT | 1.12M | 1.00M | 1.49M | 1.89M | 1.19M | |
| BOTTOM SECTION DIAMETER | 63.5mm | 76.2mm | 63.5mm | 63.5mm | 76.2mm | |
| NO. OF SECTIONS | 6 | 7 | 6 | 4 | 8 | |
| MAX HEADLOAD | 4.5Kg | 6Kg | 4.5Kg | 10Kg | 4.5Kg | |
| WEIGHT OF MAST | 6.3Kg | 7.5Kg | 8.2Kg | 7.3Kg | 9Kg | |
| MAST MODEL | CS QT 6M/HP | QT 9M/HP | S QT 9M/HP | QT 12M/HP | S QT 15M/HP | |
| CAT. NO. | 10865 | 8287 | 9451 | 8388 | 9479 | |
| EXT. HEIGHT | 5.98M | 9.02M | 8.70M | 11.40M | 15.00M | |
| RET. HEIGHT | 1.89M | 1.96M | 1.96M | 2.02M | 2.80M | |
| BOTTOM SECTION DIAMETER | 76.2mm | 63.5mm | 76.2mm | 76.2mm | 76.2mm | |
| NO. OF SECTIONS | 4 | 6 | 6 | 8 | 7 | |
| MAX HEADLOAD | 20Kg | 4.5Kg | 10Kg | 2.5Kg | 2.5Kg | |
| WEIGHT OF MAST | 10Kg | 10.5Kg | 12.2Kg | 13.3Kg | 18Kg | |
| QTM ACCESSORIES |
| Cat. No. | Description | Cost |
| 1984 | Mast Wall Mounting Bracket 63.5mm | |
| 9920 | Mast Wall Mounting Bracket 76.2mm | |
| 9427 | Mk IV Tripod | |
| 2148 | MK IV Mast Mounting Ring 63.5mm (2 required) | |
| 10354 | MK IV Mast Mounting Ring 76.2mm (2 required) | |
| 10989 | QTM Roof Seal 76.2mm | |
| 2949 | Special Roof Seal 63.5mm | |
| 1203 | Base Mounting Bracket (used with Roof Seals) | |
| 1976 | Roof Seal 76.2mm | |
| 2936 | Canvas Cover | |
| 13780 | Saddle Clamp 63.5mm (2 required) | |
| 2433 | Saddle Clamp 76.2mm (2 required) |
| Email for PRICING. FOB - ENGLAND |
QTM
series components
| 1. | Aluminium Alloy Sections |
| 2. | Handpump |
| 3. | Mounting Studs, M8 |
| 4. | Water-drain Plug |
| 5. | Air-release Screw |
| 6. | Section-clamping Screws |
| 7. | Guy Collar |
| 8. | Quick Clamp for Headload |
Photo above shows a typical through
roof mounted QTM series mast
Complete QTM Series Technical Data
Typical
QTM Applications
Clark
Mast QTM Accessories
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