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the telescopic dock leveller suitable for any situation

Telescopic Lip Levellers

The Stertil Dock Products X-Series Telescopic Dock Leveller is a highly practical and fully controllable leveller available in a variety of lip lengths up to 1,000 mm and dynamic capacities from 6-8 tonnes, for accurate and efficient loading and unloading. The X-Series is standardly supplied with an auto-park function. With a push of the button the leveller is brought back to its start position. 

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  • Climate Control for the Food Industry
  • Ideal for End-Loads
  • Optimum Safety
  • Easy to Operate with Intuitive Controls
  • Versatile, Wide range of Lip Lengths & Capacities

Operational Features

Ideal for end loads

The Stertil Dock Products' Telescopic Dock Leveller is a highly practical and reliable solution. The telescopic lip is fully controllable at variable lengths of up to 1,000 mm. This makes the dock leveller ideal for efficient loading and unloading end loads at the back of the truck. The long chamfers and the lip angle ensure a smooth transition from the dock leveller to the vehicle floor in every situation.

The various installation methods, wide range of sizes and load capacities of 6 or 8 tonnes make the X-Series telescopic dock leveller very versatile.

Telescopic lip dock Leveller

Wide Choice of Lip Lengths

The Stertil Dock Products telescopic lip X-Series levellers offer numerous possibilities and can be customised for your loading ba dock situation. The length of the platform will primarily be determined by the height difference between the warehouse floor and the expected range of vehicle loadbeds.

In order to guarantee smoother loading and unloading with less physical strain, Stertil Dock Products base its sizes on a lower maximum incline than is stipulated by the EN 1398 Directive


Standard Sizes - 6 tons models XP - XF

Theoretical working ranges for "Standard" XF - XP and XFH - XPH Series:

Lengths (mm)   2000** 2200** 2500 2800 3000 3500 4000 4500
Above Dock 600 MM* 340 395 345 385 360 375 410 385
  1000 MM* 365 425 395 435 405 415 450 420
Below Dock 600 MM* 380 355 335 325 315 425 370 345
  1000 MM* 405 380 375 360 350 460 400 365
Frame Height (mm) XF - XP 585 585 585 585 585 700 700 700


Standard Sizes - 8 tons models XFH - XPH

Lengths (mm)   2000** 2200** 2500 2800 3000 3500
Above Dock 600 MM* 260 280 315 355 380 365
  1000 MM* 285 310 375 410 435 405
Below Dock 600 MM* 350 335 320 380 255 375
  1000 MM* 370 370 350 310 280 410
Frame Height XFH - XPH 585 585 585 585 700 700

Platform width (mm) 1750, 1830, 2000, 2110, 2250
* Calculated with a fully extended 600 mm and 1000 mm lip
** Maximum lip length of 785 mm, for 2000 mm and 2200 mm long models

F = Frame Installation, P = Pit Installation, H = Heavy-Duty, Long life span

Standard X-Series Leveller

The Stertil Dock Products' Telescopic X-Series Dock Leveller is a highly practical and premium solution. It has fully controllable variable lengths of up to 1,000 mm. The long chamfers and the lip angle ensure a smooth transition from the warehouse floor to the floor of the vehicle.


Stepped Frame

Combine the X-Series telescopic leveller with a stepped frame base frame. This makes it possible to quickly dock vehicles without the need of opening doors. Furthermore, it is the solution for a complete Cool Chain solution.

Flexible width

The X-Series dock leveller can be equipped with independent side sections on both sides of the telescopic lip. This makes it possible to dock a variety of vehicles of different width on the same loading bay.


  • Standard X-Series Leveller
  • Stepped Frame
  • Flexible width

Optimum safety

In case of premature vehicle departure whereby the forklift truck is still on the X-Series telescopic dock leveller, the automatic panic-stop activates. The leveller, in most cases, remains in operation even after a panic-stop situation. The emergency stop button on the control console can also be operated manually

During maintenance, the dock leveller is held safely in position by means of a special maintenance strut. When the leveller is in parked position, it is automatically supported by two cross-traffic safety legs.

Interlock Operation System

The X-Series Stertil Dock Products dock leveller can be positioned perfectly using the three control buttons, and returned to the parked position using the standard auto-park function.

There are several advanced control options which provide additional functions such as door control, shelter control, automated interlock to prevent operation when the dock door is not fully open, and automatic door closure locking until the leveller has been parked correctly.


Installation and Maintenance

The X-Series Telescopic Lip dock levellers can be installed with a base-supported frame (XP) in a closed pit, or a suspended frame (XF) in an open pit. Both types of installation are simple to carry out. Stertil Product Managers and Engineers can provide all of the necessary information for construction and installation including drawings.

The telescopic levellers guarantees smooth loading and unloading, minimising the risk of damage to goods and to loading trucks. This considerably increases their operating life and cuts down on maintenance. The leveller itself offers superb performance due to the high quality materials from which it is manufactured, thus low maintenance costs and high return on investment. Read more about the installation methods in our: How to Design a Loading Bay.


Technical Specifications

The platform, beams and lip are manufactured from high tensile steel (S355J0 / STEEL 52). Both the platform and the lip from the 6 tons have a tear plate surface (8/10 mm and 13/15 mm respectively).The platform and lip of the 8 tons series XFH, XPH have a tear plate surface (10/12 mm and 15/17 respectively), making them suitable for 3-wheel forklift trucks.

The lip length is 600 mm as standard with a 72 mm chamfer on the front edge and a lip angle of 5.5 degrees.

Black Anti-Corrosion Coating and galvanised frame components to protect the dock leveller against all weather conditions. Standard protection is an anti-corrosive coating and paint finish of 80 micrometres total thickness. other colours are available upon request.

Unique Design

The unique design includes a central (main) cylinder, front-mounted for maximum lifting efficiency, a fully controllable lip with nylon rollers, a closed rear hinge, and automatic safety legs with damping rubbers.

Wide choice of control box functions with auto park as standard and numerous options, such as integrated operation with the COMBILOK vehicle restraint, dock door or shelter.

Telescopic lip Leveller

The cool chain solution

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