Construction machinery

Mantena has extensive experience in maintenance and modification of different types of construction machinery and work trolleys. We are also able to manufacture components and spare parts for these machines.

Our unique expertise in this area makes us an important partner for various players in the market.

Mantena in Hamar is a service partner and local representative of Zephir shale tractors, including parts sales.


Mantena can offer a full service concept that ensures correct access to train-material and logistics so that the customer achieves the best possible result, while managing the train equipment properly to maintain value and quality.

In a full service agreement, Mantena can perform all the functions described in the Security Directive (DIRECTIVE (EU) (2016/798)) and also hold the formal role of Unit for maintenance fee:

Management function that monitors and coordinates
Maintenance maintenance function responsible for handling the maintenance documentation
Fleet maintenance control unit that controls when a vehicle is to be taken out of service for maintenance
maintenance function
Mantena has been certified for all the above functions according to Regulation 445/2011 since November 2018.

The delivery of the manta must be characterized by:

– High accessibility
– Delivery according to plan
– Ability to quickly correct errors
– Technical and technical development of railway vehicles
– Effective planning

Mantena uses an effective maintenance system to achieve this, which is in compliance with applicable laws, regulations, orders and instructions from authorities, while the necessary requirements from material owners, operators and end customers are followed up at the correct level.

An effective maintenance system means that all parts of the system, such as maintenance programs, processes, organization and infrastructure, are optimally coordinated to get the best possible delivery and the best possible utilization of available resources.

Freight Train Maintenance

As with today’s passenger traffic, modern freight transport by rail requires strict requirements for safety and punctuality. That is why we are constantly focusing on maintenance systems that are based on being “ahead of us”.

Since we correct any errors and replace worn parts in the vehicle breakdown, we limit the possibility of unforeseen downtime.
In this way, we help the shipping companies to create a predictable everyday life that will thus be more cost-effective.


Engineering has broad experience and expertise in all technical and administrative areas related to railway vehicles:

– Detailed knowledge of train systems 
– Maintenance Processes
– Maintenance management
– Analysis of technical errors
– Tools and equipment
– Technical documentation and drawings
– Testing of components
– Design and development
– construction
– State relations

Engineering is responsible for finding the right technical solutions, making the right reviews and making the right decision to deliver the highest quality for the maintenance process. Engineers with different competence profiles work together to solve challenges in daily operations and in projects where knowledge is primarily combined with theoretical competence to achieve effective solutions.

The unit covers all requirements described in the Security Directive (EU 2016/798) on the function of developing maintenance and handling of the maintenance documentation and has, among other things, expertise in the following processes:

– Maintenance file maintenance document for trains
– Configuration management and control
– Development, analysis and optimization of maintenance programs based on Mantena optimization method and return on experience
– Technical development of trains based on “return of experience”
– Monitoring compliance with applicable laws, regulations and regulations
– Evaluation of technological development



Mantena performs repairs, modifications and maintenance of all types of electrical and mechanical components in various railway vehicles. Our many facilities have modern facilities and equipment for expert maintenance and efficient logistics.

In our modern bogie test bench, we can perform a series of advanced checks – and prepare status reports. In this way, we can help maintain maintenance intervals on bogies in relation to technical status.

Dynamic bench:
– vibration analysis
– brake test
– condition measurement on engines and gearboxes
– noise measurement

Static bench:
– Wheel pressure measurement on all wheels
– measuring wheelbase and parallelism
– measure spring height, primary and secondary
– bogie height, air suspension and brake system tightness test
– radial control
– Calculate automatic foam target for spring / wheel pressure and more

– Maintenance and service of HVAC systems
– Mobile team – throughout Norway

– Maintenance of valves and compressed air components for all railway vehicles
– Maintenance and repair of compressors

– Maintenance, repair and modifications to wheels, bogies and shock absorbers
– Leash reprocessing
– Review, service and maintenance of all types of gearboxes and ZF gearboxes
– Thermal spraying for rebuilding worn components
– Hot and cold pressing of wheel discs

Electrical components
– Maintenance and repair of transformers, traction motors and motors.
– Maintenance and repair of pantographs, converters and batteries
– Maintenance of switch bridges

– Review / repair of injectors / diesel nozzles
– Repair / repair of diesel pumps / regulators
– Test run in bench with optimization and analysis of diesel engines in relation to emissions and performance
– Review and repair of diesel engines


Mantena has extensive experience and expertise in procurement, storage and distribution in connection with material delivery for railway vehicles.

Our main functions are:
– Total delivery of goods including procurement services
– Saves capacity
– Logistics and distribution warehouse management
– Start the maintenance workshop for trains with straight components and parts
– Find and establish new suppliers
– Wide network with suppliers
– Consolidated deliveries and customized kits standardized package solutions

Mantena Logistics is a supplier to many of the largest – and smallest – operators in Norway and Sweden – and can offer flexible solutions tailored to your needs.

Benefits of choosing Mantena as your logistics provider:

– Allows you to focus on core business – maintenance and operation of rolling stock
– High accessibility
– High accessibility
– High accessibility
– Delivery on request
– Improved productivity
– Reduces inventory investment
– Improved asset management and loss of value
– Optimized costs, reduced operational risks and improved operational development

Mantena is characterized by trust, efficiency and innovation.

Passenger train maintenance

train maintenance

Passenger train operators place high demands on safety, comfort and, not least, punctuality.
With good systems and routines for preventive maintenance, Mantena helps to correct any errors so that they do not occur when the train is in operation. We carry out maintenance on all types of passenger trains – from traditional passenger cars to modern high-speed trains.
This makes us a key player and an important contributor to today’s rail passenger traffic.

We carry out less maintenance, heavy maintenance, corrective maintenance and technical changes of electric and diesel driven locomotives, electric and diesel driven carriages, cars and sleeping cars.

Damage and rebuilding

Mantena has extensive experience in painting, repairing damage and modifying assignments on railway vehicles.
The services are organized under their own project department.
The department has good and organized premises at Grorud in Oslo:
– 7000 m2
– 400 meter track
– 320 meters with grave
This provides opportunities for small and large assignments for passenger trains, infrastructure materials, trams and freight trains.

Mantena has one of Norway’s largest and most modern paint plants.
Our paint shop is 64 meters long with capacity for large objects. We also have our own area for fiberglass repair and paint box for smaller components.
In addition, we have a mobile paint team with professional painters and special equipment for minor repairs. The team can help our operational workshops in eastern Norway and Trondheim. By carrying out the work in the business workshops, we will reduce equipment downtime and costs in connection with transport.

In addition to this, we also have a team for mechanical and electrical modification.
Furthermore, we have the following devices:
– Sandblästerhall at 30 meters
– Fully equipped carpentry
– Bending / cutting machines cutting metal plates.
– Directional table for welding. Sandblästerhall at 30 meters
– Fully equipped carpentry
– Bending / cutting machines cutting metal plates.
– Directional table for welding.

Mantena is one of the few workshops in Scandinavia that is certified for welding on railway vehicles in accordance with EN 15085-2.

Other Services

Through our local units we offer traditional workshops for all types of railway vehicles.
All services are performed by highly qualified personnel who use different types of specialized equipment adapted to the individual work area.

Wheel lathe
At our three maintenance units in Oslo, Drammen and Trondheim we have modern and efficient floor benches.
The benches enable quick rotation by moving the material over the bench without removing the wheels. We turn after the scheduled hour and end at the agreed time.

Thermal spraying
We have extensive experience in thermal spraying for upgrading and improving mechanical parts that are subject to heavy wear.

Components, machines and equipment that need sandblasting are treated in their own special room for sandblasting. The room has the capacity to take objects up to 30 meters long.