The Extec X44 SBS Cone Crusher: Technical Specifications and Operational Profile
The Extec X44 SBS cone crusher represented a significant step in mobile crushing technology when introduced prior to Extec’s acquisition by Sandvik. Designed for high productivity and versatility in demanding secondary and tertiary crushing applications, the X44 combined robust construction with advanced cone crusher design principles. While no longer in production as Extec models transitioned under the Sandvik Mobile Crushers and Screens banner (with successors like the QH440/QH441), understanding its specifications remains valuable for operators managing existing units or evaluating used equipment.
Core Specifications:
1. Cone Crusher Unit:
Model: Telsmith 44SBS Cone (Extec sourced and integrated Telsmith cone units).
Cone Head Diameter: 44 inches (1,118 mm).
Crushing Chamber Design: Optimized geometry based on Telsmith’s SBS (Spring Box Support) design for efficient reduction and consistent product shape.
Maximum Feed Size: Up to approximately 8 inches (200 mm), depending on material type and chamber configuration.
Crushing Capacity: Variable based on feed material, closed side setting (CSS), and chamber profile; typically capable of processing up to 385 US tons per hour (350 tonnes per hour) under optimal conditions.
Closed Side Setting (CSS) Range: Adjustable via hydraulic system over a wide range, commonly from approx. 3/8″ to 1-3/4″ (10mm – 45mm), allowing precise control over final product size.
Drive System: Direct hydraulic drive via variable displacement pump(s) for efficient power transmission and overload protection.
Anti-Spin/Anti-Braking System: Incorporated to prevent damaging spin of the crusher head during no-load conditions.
2. Power Unit:
Engine: Typically powered by a Caterpillar C13 Acert Tier III compliant diesel engine.
Engine Power Output: Approximately 328 kW (440 horsepower). This provided ample power not only for the cone crusher but also for hydraulic functions and electrical generation.
Emissions Compliance: Tier III / Stage IIIA equivalent at time of manufacture.
3. Mobility & Dimensions:
Undercarriage: Track-mounted chassis providing excellent mobility on-site
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