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the telescopic dock leveller suitable for any situation

Telescopic Lip Leveller

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 1000 mm 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 solution for food industry
  • Ideal for end loads
  • Optimum Safety
  • Easy to operate with simple controls
  • Wide range of lip lengths & 6-8 t 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 1000 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.

Wide Choice of Lip Lengths

The Stertil Dock Products telescopic lip X-Series levellers offer numerous possibilities and can be customised for your loading 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 load beds.

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 ton models

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 XF en XP 585 585 585 585 585 700 700 700

Standard X-Leveller

The Stertil Dock Products telescopic X-Series dock leveller is a highly practical and reliable solution. The telescopic lip is fully controllable at variable lengths of up to 1000 mm. The long chamfers and the lip angle ensure a smooth transition.


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.

COMBI Dock Leveller

The COMBI dock leveller makes it possible to dock a varity of vehicles of differing sizes on the same loading bay dock, this reduces the amount of required dock stations and building costs. The variable side sections of the Stertil Dock Products telescopic dock leveller can be moved…


  • Standard X-Leveller
  • Stepped Frame
  • COMBI Dock Leveller

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 box 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 telescopic lip 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 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 can provide all 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 thanks to its high quality construction and low maintenance costs. 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 leveller

The cool chain solution

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