TTS-4/140 Series Tensioner

4-track system

The MDL TTS-4/140 Series Tensioner is a 50Te – 4-track caterpillar track system for the installation or recovery of flexibles, cables, umbilicals and steel pipe products.

The caterpillar tracks are fitted with ‘V’ shaped pads and operate by gripping the product between the opposing track carriages with failsafe hydraulic cylinders.


6.0m x 3.5m x 3.55m (LxBxH)
Weight (assembled) - 44Te depending pads/mounting


Operational mode
2 or 4 track mode

Max pull force (idler end)
51Te at 0.09 CoF (4 track mode)
25.5Te at 0.09 CoF (2 track mode)
40Te at 0.07 CoF (4 track mode)
20Te at 0.07 CoF (2 track mode)

Product speed
Variable to 900m/hr (at 60Hz) – provided digitally

Tension control
10 – 100% – provided digitally

Product range
50 – 600mm OD (to cover range additional pad sets required)

Track contact length

Maximum grip
568Te (4 x 142Te) – provided digitally

Max squeeze/m

Maximum track opening
800mm (without pads)

Ancillary Equipment

Electro-hydraulic powerpack
5.0m x 2.3m x 2.4m (LxBxH)
Weight – 12Te

Control van
3.0m x 2.4m x 2.5m (LxBxH)
Weight – 4.0Te

Spares container
3.0m x 2.4m x 2.5m (LxBxH)
Weight – 6.0Te

Spreader beam
6.26m x 0.25m x 0.56m (LxBxH)

Hose & Cable Package

20m set from powerpack to tensioner unit
20m power cable from powerpack to control van
20m power cable from powerpack to vessel

Lifting Equipment

1 x lifting rigging set for the tensioner
1 x lifting rigging set for all ancillary equipment

Assumed Conditions

Up to 100%

Marine/high salinity

Power Requirements

Supply 1 (main system)
3 Phase, 440V, 60Hz, 400amp supply at full load

Additional Information

The unit is designed for mounting horizontally on a deck, inclined on a ramp or hung off vertically.

The tracks are driven by hydraulic motor/brake/gearbox drive assemblies to deploy or retrieve product.

All four track carriages are mounted on the main circular structure which is attached to either the base frame, or a vertical lay system through load cell pins which provide accurate product load information.

In the horizontal or inclined lay mode one track opens to load/unload product.

In the vertical lay mode two tracks open to load/unload product.

The unit is supplied with a dedicated dual electro-hydraulic powerpack.

Custom track pads can be supplied to suit various products.

Operates in 2 or 4 track mode.

Road transportable or can be shipped by container in component form.

Supplied with quick connect/disconnect hoses.

An electric drive option with EPU is available for purchase.

Facility for data logging can be supplied.

Mdl Tts4 63Te Datasheet 01 Hd Copy Mdl Tts4 63Te Datasheet 02 Hd Copy