TTS-2/120 Series Tensioner

Top-loading system

The MDL TTS-2/120 Series Tensioner is a 20Te line pull, 2-track top loading system for the installation or recovery of cables, umbilicals and other flexible products.

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


7.7m x 2.3m x 2.3m (LxBxH)


The unit can be supplied in two standard configurations: as specified here or a shorter, lighter version with a 3.1m track contact length.


Operation mode (top loading)
2 track mode

Track contact length

Max grip

Max squeeze/m

Max pull force (idler end)
20.0Te at 0.09 CoF
16.8Te at 0.07 CoF

Product speed
Variable 0 - 1,200 m/hr (at 60Hz supply)

Tension control
10 – 100%

Product Capacity

Product range
50 – 550mm OD (may require additional track pad sets)

Maximum track opening

Ancillary Equipment

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

Electro-hydraulic powerpack
3.5m x 2.3m x 2.4m (LxBxH)
Weight – 6.5Te

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

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, 250amp supply at full load

Supply 2 (esd system)
240V, 13amp supply

Additional Information

Tracks driven by hydraulic motor/brake/gearbox drive assembly to deploy or retrieve the product. The two track carriages are mounted in the main structural frame. This is connected to the mounting frame with low shear mounts and load cell pins for accurate product load information.

Both tracks open hydraulically to load/unload product and close to grip the product when operational. The track carriages are mounted on kingpins so that they can pivot if the outside product diameter tapers. Supplied with a dedicated electro–hydraulic powerpack, which drives the track motors and operates the track cylinders. Remote operator’s control panel which can be fitted within an existing control room or dedicated cabin.

Quick connect/release package of interconnecting cables and hoses completes the basic system. Standard and custom track pads can be supplied to suit client product requirements.

Unit is road transportable or can be shipped in 40 foot flat rack containers. Facility for data logging and remote interrogation subject to set-up and bandwidth on-board vessel.

Note: For purchasing the unit can be offered with electric drives.

T120 01 T120 02