Less wear and higher productivity with the new QJ341+

Related Articles

• GHH setting new standards in mining machinery with the use of biodegradable hydraulic fluids
• Sandvik’s latest 50-tonne BEV truck combines best of two worlds
• Sennebogen adds a new 30 t telescopic crane to its product range

Sandvik Construction Mobile Crushers and Screens will be introducing a new addition to the 341 jaw crusher range with the launch of the new QJ341+. This new model incorporates a double deck pre-screen as standard, broadening our offering of the bestselling QJ341 mobile jaw crusher in order to meet customer requirements.

The new pre-screen feature on the QJ341 provides high amplitude for excellent separation. This enables the removal of a large amount of fines, resulting in greater efficiency, higher productivity and less wear on the crusher. The QJ341+ will therefore be particularly effective in quarrying applications where a high proportion of fines in the feed material are found, as the new pre-screen ‘screens out’ this material prior to entering the crushing chamber. Test results have already demonstrated increased productivity by as much as 38% in certain applications. The mobile crusher can be fitted either with a Cat engine C9 / C9.3 Acert de 261 kW / 350 hp, or Volvo D11 de 265 kW / 355 hp.

To complement the pre-screen, Sandvik has designed a new telescopic natural fines conveyor, with a discharge height of 3.1 m to deal with the increased flow of pre-screened material. The dirt chute has been designed with a steeper angle to enable a faster transfer of material, whilst also increasing the ability to deal with sticky material. The three position dirt chute allows all material passing the pre-screen grizzly to be diverted onto either the main conveyor or the natural fines conveyor. In the middle position it allows a screened product to be produced out from the fines conveyor. All of this is done by positioning the three way chute without removing any media from the pre-screen.
QJ341+ model will include the same customer-focused characteristics as the standard model, including: hydraulically adjustable CSS setting, reversible jaw and hydraulic drive enabling the crusher to start under load, thereby maximizing uptime. It also has features purposefully designed, such as the Sandvik PLC control system and control screen. Other benefits of the QJ341+ include a new improved self-locking hopper for quick and safe set-up from ground level. Improvements have also been made to the main conveyor to reduce drag. The QJ341+ has also been fitted with highly efficient bent axis and radial piston motors throughout, which will reduce hydraulic flow rates and increase fuel economy as well as improving durability.