Commissioning of the Sizer 450 ‘Compact, powerful, uncompromising’
30. November 2025
Impressive video footage of the commissioning of the Sizer 450. Direct feeding of loamy, sticky material.
SZR - Sizer
Mining
Quarrying
Recycling
Compact. Powerful. Efficient.
SZR - SIZER TECHNOLOGY
The SZR-Sizer series was engineered to take the well-known Sizer to a whole new level: higher throughput, more gentle in crushing, and in an even more compact design. Smaller than competing machines yet higher in performance, its build delivers high productivity where conventional crushers simply don’t fit.
A patented crushing tool geometry produces high-quality grain with an exceptional grain shape. The mechanically synchronized drive improves material intake and grain formation – giving you a more consistent, higher-quality output with less effort.
GENTLE CRUSHING IN A COMPACT SPACE
Tight spaces are no problem. The SZR-Sizer installs where other crushers can’t – without compromising on performance.
Depending on feed material properties, reduction ratios of up to 1:5 are achievable. Beyond mineral rock, the SZR handles recycling applications just as effectively.
A torque-limiting overload system protects the drive from damage – so the machine keeps running when it matters most.
THE ADVANTAGES AT A GLANCE
high reduction ratio
low fines generation
minimal oversize
compact footprint
automated reverse operation with high starting torque
efficient drive technology
low noise emissions
low dust generation
SIZER REDEFINED
At a glance
Technical Characteristics
Crushing gap
adjustable
A difined grain size range is achieved through the choice of the crushing tools
Overload protection
integrated
By torque limiter
Reverse operation
automated
Blockages are resolved by intelligent automation system
Crushing tools
Quick-Change-System
– Replacement of individual crushing segments
– Replacement of the entire roller
Optional control
The machine is fully automated
– The machine and process can be monitored and adjusted via a control panel
– Feed and discharge systems can be integrated into the control system
MORE PRODUCTS AND SERVICES
Our products for your requirements.
Classic Roll Crusher
Double-roll crusher with traditional V-belt drive for low and
medium rock hardness.
Our Blogs
Sizer 450 – Extremely compact and powerful!
14. October 2025
The Sizer 450, the smallest sizer in this series to date, is now in operation at the customer’s site. Extremely compact and powerful!
Sizer 800 – A powerhouse for crushing overburden and granite!
14. September 2025
The Sizer 800 is the premier choice for processing overburden and granite. A solution for many applications of this type.
Efficient secondary crushers for limestone and gypsum!
15. April 2025
Crush+ Size Sizers as secondary crushers in limestone and gypsum deliver maximum coarse grain and minimum fines.
Gypsum mining – more coarse grain, less fines
26. September 2023
Two 550-13 sizers were delivered under the condition of producing a coarse grain with the lowest possible proportion of fines. Our sizers are to be
Versatile and robust – Material pre-breaking for soil washing
8. July 2022
To pre-break material for soil washing, this double roll crusher of type Sizer 550-13 is used in Switzerland’s most advanced soil washing plant. It needs