TTS-4/310 Series Tensioner

4-track system

The MDL TTS-4/310 Series Tensioner is a 110Te – 4-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.


7.5m x 4.45m x 4.9m (LxBxH)
Weight (assembled) - 67Te


Operational mode
2 or 4 track mode

Track contact length

Maximum grip
1240Te (4 x 310Te)

Max squeeze/m

Max pull force (idler end)
110Te at 0.09 CoF (4 track mode)
55Te at 0.09 CoF (2 track mode)

Product speed (installation)
0- 800m/hr (at 60Hz)

Product speed (recovery)
0- 500m/hr (at 60Hz)

Tension control
10 – 100% – provided digitally

Product Capacity

Product range
50 – 650mm

Maximum track opening
1278mm (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.

Two tracks pivot open providing a wide aperture to facilitate passing ends and loading or unloading 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 110Te Datasheet 01 Hd Mdl Tts4 150Te Datasheet 02 Hd Copy