BAUMA PREVIEW
decoupled from the machine body to offer 90 ° rotation in both directions . Up to six cameras can also be installed to provide even better all-round vision , while various automated functions further contribute to operator comfort . This potentially reduces the risk of fatigue , assists the operator in achieving high productivity rates and improves the overall efficiency of the process , the company says .
Thanks to the reduction of carbon emissions by low specific fuel consumption , an efficient water management system and effective solutions for the minimisation of dust pollution , the 280 SM ( i ) shows that ecological and economic considerations are compatible and closely interconnected , Wirtgen concluded .
The 280 SM ( i ) is an “ all-rounder ” for all rock hardnesses and applications , Wirtgen says
says it has developed another efficient and practice-oriented solution for the extraction of primary resources , with innovative technologies that enable high machine utilisation rates and maximum productivity .
The 280 SM ( i ), which will be on show in Munich , is designed for the reliable and selective extraction of primary resources by direct loading , sidecasting or cut-to-ground . Raw materials are extracted and crushed in-situ in the purest quality in a single operation – without drilling and blasting , and with minimal environmental impact .
The 280 SM ( i ) is driven by four steerable and height-adjustable crawler units . This makes the machine highly manoeuvrable , able to quickly turn at the end of a cut , according to the company . The LEVEL PRO ACTIVE automatic levelling system maintains the specified cutting depth with consistently high precision and without further aids .
The 280 SM ( i ) is an “ all-rounder ” for all rock hardnesses and applications , Wirtgen says . The 2,750 mm cutting drum unit , with a cutting depth of up to 650 mm , is precisely adaptable to each specific application and achieves outstanding cutting performance with minimal pick wear , it added .
Wear-resistant toolholder systems ensure optimal pick utilisation and minimal downtime .
While the soft-rock cutting drum unit is designed for high material flows in soft rocks , the hard-rock cutting drum unit ensures maximum durability and long life in hard-rock applications , according to Wirtgen .
The hydraulically , height-adjustable rear discharge conveyor with a movable counterweight can be slewed to the right and left by 90 ° and enables the loading of mining trucks with payloads of up to 100 t . Whats ’ more , the operator can continuously vary the speed of the belt independent of the engine speed to reduce belt wear dependent on the material volume and the size of the mined material .
Entirely new standards are set by the dustsealed and air-conditioned , positive-pressure cabin on the new surface miner with fresh air filtration . This , the company says , prevents the ingress of dust into the operator ’ s workplace .
Mounted on the front left chassis column , the operator ’ s cabin has all-round glazing and is
Moving to drive mode
After launching Generation X . e in 2019 , SEW- EURODRIVE says it is once again setting new technology standards .
The helical and bevel-helical gear units of the X . e series cover a torque range from 6.8 to 475 kNm across 23 graduated sizes .
Digital data models and the latest calculation methods have laid the foundations for a further improvement in the performance of its Generation X . e series . Among the benefits that come with this update are a higher thermal limit rating , a longer bearing service life , and higher nominal and application torques . Moreover , larger application angles are permissible with the maximum overhung load .
One potential result of this optimisation is a smaller gear unit size . Besides reducing the oil volume , energy consumption and total cost of ownership , this also means the units are lighter and take up less space in the plant . Particularly in the case of drives that are subject to high loads , mechanical safety – and , thus , the potential for preventing damage – is also further improved . What ’ s more , a lower oil-bath temperature and a higher bearing service life mean reduced unplanned maintenance .
These same gear units , to be displayed at Bauma , are part of the company ’ s “ Industrial
SEPTEMBER 2022 | International Mining