91导航

In aggregate manufacturing and mining ore reduction, cone crushers serve as critical equipment for secondary and tertiary crushing stages due to their high crushing ratios, robust efficiency, and broad material adaptability.

Currently, the market mainly offers three primary configurations: Spring Cone 91导航s, Single-Cylinder Hydraulic Cone 91导航s, and Multi-Cylinder Hydraulic Cone 91导航s. These designs feature substantial differences in working principles, structural configurations, performance metrics, and application scenarios.

To help aggregate producers, quarry operators, and mining engineers choose the ideal crusher for their plant, Zhongxin Heavy Industry provides an in-depth, side-by-side technical evaluation across mainframe structures, discharge adjustments, overload protection systems, particle shaping, and maintenance costs.

1. Mainframe Structural Layout & Component Differences

Single-Cylinder Hydraulic Cone Crusher

The single-cylinder hydraulic cone crusher consists of a hydraulic cylinder assembly, lower frame, eccentric sleeve assembly, transmission system, inner cover, moving cone assembly, upper frame, and feeding hopper.

Featured Zhongxin Models: DP Series Single-Cylinder Cone 91导航, DPS Series Single-Cylinder Cone 91导航.

Multi-Cylinder Hydraulic Cone Crusher

The multi-cylinder hydraulic cone crusher comprises a main frame, transmission assembly, eccentric sleeve assembly, bowl-shaped bearing assembly, moving cone assembly, support sleeve, adjustment ring, and hydraulic clamping/release cylinder assembly.

Featured Zhongxin Model: XHP Series Multi-Cylinder Hydraulic Cone 91导航.

Symons & Compound Spring Cone Crusher

The Symons and compound spring cone crusher layout includes a main frame, eccentric sleeve assembly, drive unit, moving cone assembly, countershaft bowl assembly, support ring, adjustment cap, spring overload assembly, and hydraulic clearing cylinder unit.

Featured Zhongxin Models: Compound Cone 91导航, Symons Cone 91导航.

PY Series Spring Cone Crusher

The standard PY spring cone crusher consists of a main frame, eccentric sleeve assembly, transmission assembly, moving cone assembly, bowl bearing assembly, support ring, adjustment ring, and mechanical spring assembly.

Featured Zhongxin Models: PY1200, PY1750, PY2200 Spring Cone 91导航s.

2. Discharge Opening (CSS) Adjustment Mechanisms

• Single-Cylinder Hydraulic Cone 91导航: The closed-side setting (CSS) is adjusted by pumping hydraulic oil into or out of the bottom hydraulic cylinder. This raises or lowers the main shaft, dynamically changing the gap between the mantle and concave.

• Multi-Cylinder Hydraulic Cone 91导航: A hydraulic pump powers a hydraulic motor that drives a pinion gear via electromagnetic directional valves. This rotates the large ring gear on the adjustment cap counter-clockwise or clockwise, screwing the adjustment ring up or down inside the support ring to change the CSS.

• Symons, Compound, and PY1200/1750/2200 Spring Cone 91导航s: A hydraulic pump feeds oil into push cylinders operated by manual control valves. The pushing head engages the notch ring on the adjustment cap, rotating the adjustment ring up or down inside the support sleeve. (Note: Compact models like PY600 and PY900 rely on manual mechanical adjustment).

  
  

  

3. Overload Protection & Tramp Iron Clearance (Unchoking)

• Single-Cylinder Hydraulic Cone 91导航: When uncrushable tramp iron enters the chamber, hydraulic oil inside the cylinder is forced into an accumulator, lowering the main shaft. Once the obstruction clears, accumulator pressure restores the main shaft to its original position. During chamber clearing, hydraulic oil is drained from the cylinder, dropping the main shaft to open the chamber completely.

• Multi-Cylinder Hydraulic Cone 91导航: Overload forces push hydraulic oil from the release cylinders into accumulators, allowing the support sleeve and adjustment ring to lift. After the tramp iron passes, accumulator pressure reseats the assembly. Chamber clearing is achieved by using the hydraulic system to pressurize the lift cylinders, raising the entire top section to discharge trapped material.

• Symons & Compound Spring Cone 91导航s: Mechanical springs compress to lift the support ring and adjustment cap when uncrushable material enters. For chamber clearing, hydraulic rams compress the springs to lift the top assembly by approximately 25 mm, widening the gap. Draining the rams allows the spring tension to crush remaining material—a process repeated until the chamber is cleared.

• PY Spring Cone 91导航: Overload protection relies entirely on mechanical spring compression. Standard PY series crushers lack hydraulic clearing cylinders, requiring manual material excavation during chokes. (Zhongxin Heavy Industry provides optional hydraulic clearing cylinder upgrades for PY1200, PY1750, and PY2200 models upon request).

4. Bevel Gear Engineering & Drive Types

5. Countershaft Bearings & Lubrication Systems

• Single-Cylinder Hydraulic Cone 91导航: Uses rolling element bearings throughout the countershaft assembly. Models DP100, DP100S, DP430, and DP430S utilize oil bath lubrication, while heavy-duty models (DP440, DP440S, DP660, DP660S, DP780S, DP870, DP890, DP895) feature forced oil lubrication systems.

• Multi-Cylinder Hydraulic Cone 91导航: Employs precision sliding bushings (journal bearings) with continuous forced circulating oil lubrication.

• Symons Spring Cone 91导航: Uses bronze sliding journal bearings with forced circulating oil lubrication.

• Compound Spring Cone 91导航: Utilizes anti-friction rolling bearings with oil bath lubrication.

• PY Spring Cone 91导航 Series: All PY models (PY600, PY900, PY1200, PY1750, PY2200) feature sliding journal bearings serviced by circulating oil lubrication stations.

6. Main Shaft Configuration & Mounting Differences

• Single-Cylinder Hydraulic Cone 91导航: Features an elongated main shaft fixed directly into the moving cone torso. The lower end inserts into an eccentric copper sleeve resting on the hydraulic piston, while the upper end is supported by a top bushing in the upper frame. During operation, the main shaft gyrates along with the eccentric sleeve.

• Spring Cone 91导航s (PY, Symons, Compound): The main shaft is fixed to the moving cone core, inserted into an eccentric bronze sleeve, and supported at its base by a spherical socket bearing (bowl liner). It has no top support frame. The main shaft gyrates with the eccentric sleeve during crushing.

• Multi-Cylinder Hydraulic Cone 91导航: Utilizes a short, heavy-duty stationary main shaft fixed directly to the main frame. The eccentric sleeve rotates around the stationary shaft, meaning the main shaft itself remains stationary during operation.

7. Feeding Requirements & Chamber Filling

• Single-Cylinder Hydraulic Cone 91导航: Capable of handling choke feeding (full chamber feeding).

• Multi-Cylinder Hydraulic Cone 91导航: Strictly requires choke feeding to maintain inter-particle compression and achieve optimal cubical product shaping.

• Spring Cone 91导航: Feeding height only needs to reach the upper edge of the concave (mantle collar) without requiring strict choke-feed pressure.

8. Crushing Performance & Product Particle Shape

[Inter-Particle Compression (Multi-Cylinder)]  ──? High Fines Output + Low Flakiness (<5%) ──? Hard Rock (Granite/Basalt)

[High Throughput Reduction (Single-Cylinder)]   ──? High Tonnage Flow + Coarser Fines    ──? Soft / Weathered Ore

[Standard Reduction (Spring Cone)]    ──? Cost-Effective Secondary Reduction    ──? Medium-Hard Aggregates

• Multi-Cylinder Hydraulic Cone 91导航: Excel at inter-particle crushing (laminated crushing). Material is compressed against other rocks within the crushing chamber rather than just against manganese liners. This maximizes fine particle yield, yields cubical aggregate shaping, and reduces elongated/flaky particles to under 5%. It is the preferred choice for crushing hard and abrasive ores like granite, basalt, and iron ore.

• Single-Cylinder Hydraulic Cone 91导航: Offers superior secondary crushing throughput. It provides larger pass-through capacities and faster material flow, though with a slightly higher percentage of flaky particles. It excels at processing softer ores, river gravel, and weathered rock where volume throughput is prioritized.

• Spring Cone 91导航: Provides dependable primary-to-secondary crushing performance for non-critical aggregate applications at a lower initial equipment cost.

9. Maintenance & Operational Reliability Summary

Expert 91导航 Selection & Quotation Support from Zhongxin Heavy Industry

Choosing the right cone crusher depends on your feed material hardness, target throughput (TPH), required aggregate gradation, and budget allocations:

• Choose Multi-Cylinder Hydraulic Cone 91导航s for hard rock crushing, manufactured sand production lines, and high-specification asphalt/concrete aggregates.

• Choose Single-Cylinder Hydraulic Cone 91导航s for high-capacity secondary reduction in large-scale quarry operations.

• Choose Spring Cone 91导航s for cost-sensitive aggregate plants requiring reliable, straightforward crushing performance.

If you need a customized crushing flowsheet, precise equipment parameters, or factory-direct price quotations, Zhongxin Heavy Industry's engineering specialists are here to assist.

• whatsapp: +86 13676922906

• Services: 1-on-1 Equipment Selection, Custom Plant Layout Design, Global On-Site Commissioning, and Lifetime OEM Spare Parts Support.