SISU POLAR TRUCKS ARE GENUINELY FACTORY-READY BUILT IN ONE STAGE. SECURITY, RELIABILITY AND QUALITY ARE GUARANTEED WHEN OPERATING IN CHALLENGING AND DIFFICULT CIRCUMSTANCES.

ERGONOMY, HANDLING AND SAFETY ARE KEY WORDS REGARDING PURPOSESPECIFIC EQUIPMENT.

When the vehicle is manufactured to the smallest detail by Sisu that is the best choice for the customer. Warranty granted by Sisu brings added value to the customer and preserves better the resale value of the truck. Detailed documentation and spare parts numbering during the manufacturing process result in easier maintenance and repair even years later.

TAILORING

THE PRIMARY OBJECTIVE FOR SISU IS TO MANUFACTURE A HIGH STANDARD QUALITATIVE VEHICLE ACCORDINGLY TO THE NEEDS OF THE CUSTOMER USING PROVEN VEHICLE TECHNOLOGY.

Sisu Polar has an expandable, clear, and easy to use device control system for specific purposes of use. The system, specified together with customer, guarantees that the user is provided with a vehicle that is of high-quality and ideal for the working needs.
Manufacturing a factory-ready vehicle is simple, even if it is complex. By strict documentation serviceability, warranty and after-sales work seamlessly together.

CABIN

DESIGNED TO MEET THE REQUIREMENTS OF USE FOR HEAVY PURPOSE SPECIFIC VEHICLES

In Sisu Polar purpose specific factory-ready vehicles cab features are well designed and factory fitted. Especially for arctic conditions, customized features are naturally standard equipment.Cabins are available in different sizes. Height, width and lengths options depending on the engine and chosen drive task.

Featuring more spacious and silent cabins. More storage space for tools and documents. More convenience.

Handling and Driving Caracteristics

UTILIZING LATEST TECHNOLOGY FOR THE DRIVERS NEEDS

Loaded or unloaded on bad roads, purposespecific manufactured steel springs makes driving enjoyable and smooth. The front suspension is fitted to work together with the rigid frame, which ensures comfortable mileage for the driver. The torsion rigid frame reduces the jittering and makes driving behavior easily predictable.

Steering systems

SISU STEERING SYSTEM – DESIGNED FOR MULTIPLE STEERING AXLES. LIGHT AND DEPENDABLE IN ALL CIRCUMSTANCES.

Depending on the purpose of the vehicle, the additional axles can be mounted either with mechanical or electro-hydraulic steering. Electro-hydraulic steering causes no wear and tear because of no moving parts. Electro-hydraulic steering enables high operating pressure, combined with a large steering cylinder they guarantee the best steering of the axle and staying upright when needed.

Steering gears are available in two different types, the traditional 1-circuit steering gear and as a new option electrical powered SERVOTWIN steering. SERVOTWIN bases on an electric motor bringing additional power, which makes steering very precise and light for the driver even at slow speed. SERVOTWIN reduces fuel consumption and there is no need for additional continuous hydraulic circuits and pumps for the 2-circuit steering system.

Axles and Traction

SISU IS A PIONEER, THE FIRST TO INTRODUCE BOGIE DRIVE WITH DISCONNECTING ABILITY AND LIFT. A HYDRAULIC JACK INTEGRATED INTO THE STRUCTURE OF THE CHASSIS, GIVING EFFICIENT LIFTING CAPACITY EVEN LOADED. TRACTIONS; 6×4, 8×4 and 10×4.

When it comes to four and five axle trucks, Sisu Polar has superior terrain abilities. Liftable rear axles guarantee extraordinary drivability also unloaded, reducing fuel consumption and reducing tire wear. Factory-ready four and five axle trucks are available with at least two liftable axles.

Sisu axles 8 , 9 and 10-ton axles are heavy-duty axles.  In additional axles a pressure control system adjusts axle loads that are directly in proposition with the steel springs.

FRAME

THE HIGH C-PROFILE FRAME (C460) USED IN THE SISU POLAR IS DUE TO IT´S RIGIDNESS AND BUILDABILITY SUPERIOR TO ALL OTHERS.

The frame of each Sisu Polar is designed and manufactured keeping in mind the purpose of the vehicle. End use specific equipment is integrated into the vehicle frame, thus, forming part of the vehicle body and load-bearing structure. Excess holes in the frame are not required. The result is a strain resistant first-class structure.

Due to its superior fatigue resistant high c-profile frame the Sisu Polar is well-known for excellent tipping stability. The C-460 frame guarantees the best possible driving capabilities.

Recent further development of the frame by altering the radius and added precision to the manufacturing process makes the C460 a first-class frame.

Trucks built based on the high c-profile frame are notably lighter than a low profile reinforced subframe truck.

As an example, a 4-axle Sisu Polar gravel truck built on the C460 frame is hundreds of kilograms lighter than a truck fitted with a subframe.

Powershift 3 Transmission

MERCEDES-BENZ POWERSHIFT 3 – USER FRIENDLY AND  20% FASTER GEAR SHIFTING THAN ITS PREDECESSOR.

Electro-pneumatically controlled transmission allows for high-efficiency , which results in reduced fuel consumption and minimized emissions . For the user it brings comfort and easy handling of the truck.

The 16 – speed transmissions speed range can be adapted precisely to suit the respective driving condition , resulting in easier start up from soft ground. Due to the high efficiency gearbox economical fuel consumption is guaranteed even in highway use.

Separate functions connected to the automatized gearbox make handling of the vehicle easier in challenging circumstances. Crawler gears contribute to precise handling at low speed and at start up. Rocking mode makes it easier for the vehicle to release itself independently from sludgy, marshy surfaces.

Straight-six  Mercedes – Benz engines are manufactured to heavy-duty requirements. Two engines (displacement of 12.8 l and 15.6 l) and six output sizes enable the most efficient and economical option for any purpose. Extremely wide torque makes startups with heavy loads easier and reduce the need for gear shifting, which saves fuel and produces less emissions, as well as transmission wear reduces significantly.

Sisu Polar range features the world’s largest commercial vehicle manufacturer Daimler AG: s extensively tested high technology Euro VI engines. The Exhaust gas recirculation system (EGR), the SCR- catalytic converter that is combined to the Silencer unit, an oxidation catalytic converter and the particle filter in combination reduce nitrogen oxides, carbon monoxide, hydrocarbons and particulate emissions while still maintaining high power and low fuel consumption.

X -Pulse common rail technique, achieves efficient and clean burning of fuel, low consumption and low emissions. This system allows the sprayed fuel to be adjusted to droplet size, quantity and pressure; it is possible to increase the pressure up to 2100 bar.

The three-phase high-performance motor brakes fitted as standard equipment in Sisu Polar trucks improve driving safety and vehicle handling especially at heavy loads.  Thanks to this feature, the brakes last longer.