Many international customers inquire about the "15-inch x 20-inch" and "13-inch x 48-inch" jaw crushers, which are actually the well-known PE400×600 and PEX250×1200 models in the Chinese market. This article will thoroughly analyze the correspondence, technical characteristics, and applicable scenarios of these two sets of specifications to help you make accurate decisions in global equipment selection.
Core Correspondence and Design Concept Analysis
The internationally used "inch" specification directly corresponds to the domestic "millimeter" model, but this is not just a conversion of units; it also represents two differentiated crushing solutions:
• 15"x20" corresponds to PE400×600 (feed opening 400x600mm): This is a classic coarse jaw crusher. Its relatively square feed opening design emphasizes a robust structure, balanced crushing ratio, and wide material adaptability, making it a "backbone" for primary crushing in small and medium-sized production lines or quarries.
• 13"x48" corresponds to PEX250×1200 (feed opening 300x1200mm): This is a typical fine jaw crusher (PEX series). Its narrow yet wide feed opening (up to 1.2 meters wide) is designed for high-capacity fine crushing. It can accept long, flaky materials and achieves finer discharge particle sizes through a longer crushing stroke.
Model In-Depth Analysis and Advantage Comparison
PE400x600 Jaw Crusher
PE400×600 (15"x20"): Robust and Reliable Small to Medium-Sized Crusher Core
Core Design Overview
The PE400×600 adopts a classic double-pendulum jaw crusher structure, known for its simple structure, convenient maintenance, and low operating costs. Its core components, such as the eccentric shaft and bearings, are reinforced, making it capable of handling coarse crushing tasks of various medium-hardness ores and rocks.
Core Advantages Explained
• High Cost-Effectiveness and Low Operating Costs: As an entry-level coarse crushing equipment, it achieves an optimal balance between purchase cost and operating energy consumption. Its wear parts (jaw plates) are highly versatile and easy to replace economically.
• Wide Material Adaptability: It can effectively crush various materials with compressive strength not exceeding 300MPa, such as granite, basalt, limestone, and river pebbles, making it a highly versatile "all-rounder."
• Compact Structure and Flexible Layout: The equipment has a small footprint, making it particularly suitable for production lines with limited space or requiring mobile/semi-mobile layouts.
Typical Application Case Study
Case Study: A medium-sized construction aggregate production line in Southeast Asia uses high-hardness granite as raw material, with a maximum feed particle size of approximately 500mm. One PE400×600 crusher manufactured by our company was selected as the primary crusher, followed by a cone crusher. The production line operates stably, achieving an hourly output of 120-150 tons, with a stable output particle size of 0-100mm, perfectly meeting the local demand for high-quality aggregates for road construction, and offering a short investment payback period.
PEX250x1200 Jaw Crusher
PEX250×1200 (13"x48"): High-Efficiency Fine Crushing Capacity Leader
Core Design Overview
The PEX series is optimized for fine crushing. The PEX250×1200 features an extra-long crushing chamber, allowing materials to undergo a longer compression and crushing process within the chamber, thus achieving a higher crushing ratio (typically 8-12) on a single unit, directly producing finer materials with more uniform particle size.
Core Advantages Explained
• Superior Fine Crushing Capacity and High Capacity: The unique chamber design allows it to maintain a high throughput even in the fine crushing stage, with an hourly output of 80-150 tons (depending on the material and discharge port), making it an ideal choice for secondary fine crushing.
• Uniform Output Particle Size and Excellent Particle Shape: Compared to ordinary coarse jaw crushers, its products have a lower content of needle-like and flaky particles and more cubic particles, significantly improving the finished value of manufactured sand or high-quality aggregates.
• Strong capacity for handling long, thin materials: The wide 1.2-meter feed inlet easily handles long, thin intermediate products from primary crushing, reducing the risk of blockage.
Typical Application Case Study
Case Study: A large domestic cement group's aggregate processing line required crushing 100-300mm limestone from primary crushing to high-quality aggregate of 0-30mm. Two PEX250×1200 units were used in parallel as secondary crushers, with the discharge outlet adjusted to approximately 30mm. The equipment operated smoothly, not only meeting extremely high throughput requirements but also producing aggregate with excellent particle shape, suitable for direct use in commercial concrete, resulting in a significant premium.
Selection Guide and Recommended Equipment Combinations
• Choose PE400×600 (15"x20") if: Your project starts with primary crushing of raw materials (≤500mm), prioritizing equipment stability, durability, and optimal overall cost, and you have subsequent medium and fine crushing equipment (such as cone crushers or impact crushers) for secondary processing.
• Choose the PEX250×1200 (13"x48") if your process requires further crushing of medium-sized materials (≤250mm) after primary crushing, aiming for high capacity and good product particle shape in the secondary crushing stage. It is commonly used in secondary crushing of sand and gravel aggregate lines or as the final crushing stage in small to medium-sized production lines.
Recommended Matching Equipment:
1. With PE400×600: A vibrating feeder and bar screen (pre-screening) are recommended at the front end; the rear end can be flexibly connected to a single-cylinder cone crusher, multi-cylinder cone crusher, or impact crusher.
2. With PEX250×1200: Typically used as a secondary crusher, receiving material from a PE jaw crusher or small gyratory crusher at the front end; the rear end connects to a vibrating screen to form a closed-loop circulation, or directly produces finished products.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between the PE and PEX series? Are their crushing principles different?
A: The crushing principles (double pendulum type) of both are basically the same. The core difference lies in the design objectives and chamber shape. The PE series focuses on coarse crushing, emphasizing feed capacity and structural strength, with a relatively small crushing ratio (typically 4-6). The PEX series focuses on fine crushing, featuring a longer crushing chamber to achieve a larger crushing ratio and finer product particle size; its feed inlet is designed to be "narrow and wide."
Q2: Can I replace the "PE coarse crushing + cone crusher medium crushing" process with a single PEX250×1200?
A: Under certain conditions, it is possible, but it is a simplified process. If your raw material has low hardness (e.g., limestone), a small feed particle size (≤250mm), and the final product particle size requirement is not particularly fine (e.g., 0-40mm), a single PEX250×1200 can achieve "one-stage" fine crushing, saving investment. However, for high-hardness materials or requiring multi-stage finished product specifications, the traditional two-stage or multi-stage crushing process is still a better choice.
Q3: As a manufacturer with 20 years of experience, what optimizations have you made to these classic models?
A: Based on massive application data, we have continuously iterated on these two classic models:
• Structural Reinforcement: Finite element analysis was used to optimize the frame, adding local stiffeners to improve overall rigidity and reduce the risk of deformation and cracking during long-term operation.
• Component Upgrades: Heavier, forged eccentric shafts were adopted, and internationally renowned bearings were selected to ensure the lifespan of the core transmission system. Jaw plates made of various materials (such as Mn18Cr2 high-manganese steel) are available to accommodate different abrasive materials.
• Ease of Use Improvements: The lubrication system piping was optimized, and the flywheel guard and adjustment seat design were improved, making daily maintenance, lubrication, and discharge port adjustment safer and more convenient.
About of Baichy Heavy Industry
Baichy Heavy Industry is a high-tech mining equipment company integrating R&D, manufacturing, sales, and after-sales service. Focusing on crushing, grinding, and mineral processing equipment, we provide professional solutions to our customers. We are ISO9001:2015 、certified, and our products include mobile crushing palnts, crawler crushing plant, construction waste crushing plants, jaw crushers, sand making machines, cone crushers, fine crushers, grinding mills, ball mills, etc., all with reliable performance to meet diverse project needs.
Our advantages:
• Professional pre-sales support: Free project design and comprehensive solutions to help you accurately select the right equipment;
• Comprehensive on-site service: Providing installation guidance and worker training to ensure smooth equipment commissioning;
• Reliable after-sales guarantee: A complete after-sales system, timely response to technical inquiries and equipment maintenance, ensuring long-term stable operation.
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