The Spek Jaw Crusher Shanbao PEX-250×1000: Engineered for Efficient Intermediate Crushing
Introduction
In the demanding world of mineral processing, aggregate production, and construction material recycling, jaw crushers remain the undisputed workhorses for primary and intermediate size reduction. Among the diverse range of crushers available, the Shanbao PEX-250×1000 (commonly referred to as the “Spek 250×1000” in some regions/catalogs) stands out as a robust and reliable solution specifically engineered for efficient secondary or tertiary crushing applications. As a key product from Shanghai Jianshe Luqiao Machinery Co., Ltd. (now part of the global Sandvik group but retaining the Shanbao brand legacy), this crusher embodies decades of engineering expertise focused on performance, durability, and operational economy.
This article delves into the technical specifications, design features, operational principles, typical applications, advantages, and essential considerations surrounding the Spek/Shanbao PEX-250×1000 jaw crusher.
Core Specifications & Dimensions
Understanding the fundamental metrics of any crusher is paramount for selection and integration into a processing circuit. The PEX-250×1000’s defining characteristics are:
1. Feed Opening Size: 250 mm (Width) x 1000 mm (Length). This rectangular opening dictates the maximum lump size it can accept.
2. Maximum Feed Size: Typically up to 210 mm (approx. 80-85% of feed opening width is a common rule of thumb).
3. Discharge Opening Range (CSS – Closed Side Setting): Adjustable within a range of approximately 25 mm to 60 mm (1″ to ~2.4″). This setting directly controls the final product size distribution.
4. Capacity: Highly dependent on feed material characteristics (hardness, density, moisture), feed size distribution, discharge setting, and crushing chamber design.
Typical Rated Capacity Range: 15 – 50 Tons Per Hour (TPH).
Example: Crushing medium-hard limestone (~150 MPa compressive strength) with a CSS of 40mm might yield around 30-40 TPH.
5. Drive Power: Equipped with an electric motor typically rated at 30 – 37 kW (40 – 50 HP).
6. Crusher Weight: Approximately 6,500 kg (basic machine weight without motor or flywheel
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