CS110 4FT Standard Symons Cone Crusher: Working Principle, Technical Parameters & Application Case Studies

CS110 Symons 4FT Standard Cone Crusher for Granite Quarry Crushing

Introduction to CS110 4FT Standard Symons Cone Crusher

The CS110 4FT standard Symons cone crusher remains one of the most popular medium crushing machines for aggregate and mining operations around the world. Designed and manufactured by Baichy Heavy Industry, this Symons cone crusher inherits the classic spring cone crushing structure of the original Symons design, with upgraded internal wear parts, stable spring safety protection system and optimized crushing cavity for medium-size stone production.

Many quarry owners choose the CS110 4FT standard Symons cone crusher to process hard rock materials such as granite, basalt, iron ore, limestone and river pebble. Unlike short-head Symons cone crushers built for fine crushing, the standard 4FT model features a wider feed opening and medium crushing cavity profile. It takes crushed rock from a primary jaw crusher and reduces it to 20mm to 50mm aggregate for road construction, concrete batching plant and railway ballast projects.

When selecting a cone crusher for quarry projects, buyers need to evaluate crushing capacity, liner service life, maintenance difficulty, energy consumption and operational stability. The CS110 4FT standard Symons cone crusher balances all these factors well, which explains its continuous demand in Africa, Southeast Asia, the Middle East and South America. This article will break down the working principle of the CS110 4FT Symons cone crusher, list full technical parameters, analyze typical application scenarios and share real customer case studies to help mining and quarry operators understand whether this cone crusher fits their crushing plant layout.

Core Structure of CS110 4FT Standard Symons Cone Crusher

Before ping into the working principle of the CS110 4FT Symons cone crusher, it is necessary to understand its main components. Each part works cooperatively to complete rock compression crushing and overload protection.

Structural diagram of the Symons cone crusher

Main Frame and Adjustment Ring

The heavy cast main frame is the base of the CS110 4FT standard Symons cone crusher. It bears all impact and compression force during continuous crushing. The adjustment ring sits on top of the frame. Operators rotate the adjustment ring to adjust the closed side setting (CSS), which directly controls the discharge particle size of the Symons cone crusher. The thread structure between the adjustment ring and main frame allows simple gap adjustment without complex hydraulic tools.

Mantle, Concave and Crushing Cavity

Mantle and concave are the key wear parts of the CS110 4FT Symons cone crusher. Both are made of high manganese steel Mn18Cr2. The mantle is installed on the moving cone assembly and rotates with the eccentric shaft movement. The concave is fixed inside the adjustment ring. The space between mantle and concave forms the crushing cavity. The standard cavity shape for CS110 4FT Symons cone crusher is optimized for medium crushing. It accepts larger feed stones than short head type cone crushers and produces well-graded aggregate.

Eccentric Shaft Assembly and Main Shaft

The eccentric sleeve drives the main shaft to perform gyratory motion. When the CS110 4FT Symons cone crusher runs, the eccentric shaft rotates, making the top of the main shaft swing in a circular path. This gyratory movement creates periodic squeezing action on rock materials inside the crushing chamber. This is the core mechanical movement that realizes rock breaking.

Spring Safety Protection System

The spring group around the main frame is the famous safety design of Symons cone crusher. If non-crushable material such as steel drill bit enters the crushing cavity, the compression force will rise sharply. The springs will yield and lift the adjustment ring to discharge foreign objects automatically. After overload, the springs reset the machine back to original working gap. This spring protection system avoids major damage to the mantle, concave and frame, reducing downtime for the CS110 4FT cone crusher.

Drive Pulley, Bevel Gear and Lubrication System

Power transfers from electric motor to the bevel gear set through the drive pulley. The bevel gear changes rotation direction and transmits torque to the eccentric sleeve. The forced thin oil lubrication system supplies lubricant to main shaft, bearings and gear sets. Good lubrication keeps bearing temperature stable and extends service life of the CS110 4FT Symons cone crusher. Operators must check oil temperature, oil pressure and oil quality daily to prevent equipment failure.

Working Principle of CS110 4FT Standard Symons Cone Crusher

The working principle of CS110 4FT Symons cone crusher relies on continuous gyratory compression crushing inside the crushing chamber. Many new plant operators confuse cone crushing with jaw crushing. Jaw crusher breaks rock by intermittent squeezing, while Symons cone crusher applies cyclic compression and bending force.

Material Feeding Process

Raw stones after primary crushing by jaw crusher fall into the top feed hopper of the CS110 4FT standard Symons cone crusher. The material drops into the upper zone of the crushing cavity between concave and mantle. The feed size of CS110 4FT Symons cone crusher has an upper limit. Oversized rock cannot enter the cavity and will cause frequent overload, so primary crushing stage must control feed size strictly.

Gyratory Compression Crushing Cycle

As the motor drives the bevel gear and eccentric sleeve, the mantle performs gyratory swinging motion. At one position, the mantle moves toward the concave surface. Rock trapped between mantle and concave receives strong compression force. Hard granite breaks along natural cracks under pressure. When mantle swings away from concave, the broken rock falls down by gravity to the lower section of the crushing cavity.

This action repeats hundreds of times per minute. Every swing creates one compression cycle. Large rock pieces break into smaller particles step by step as they travel down the cavity. Particles smaller than the closed side setting fall out from the bottom discharge opening. Larger fragments stay inside the cavity and get crushed again until they meet the size requirement. This layered crushing mechanism is the core working principle of the CS110 4FT Symons cone crusher.

Overload Protection Working Logic

The spring protection system works together with the crushing process. When unbreakable metal enters the cavity, the gap between mantle and concave cannot shrink normally. The extra force pushes the adjustment ring upward and compresses the springs. The gap opens temporarily so foreign matter can exit through discharge mouth. Once the obstacle is removed, spring tension pulls the adjustment ring back to original position and the CS110 4FT Symons cone crusher resumes normal crushing. This mechanism reduces catastrophic breakdown in granite quarry operations.

Discharge Size Adjustment Principle

The closed side setting determines final product gradation. Operators adjust the CSS by rotating the adjustment ring upward or downward. Tighten the ring to reduce discharge size; loosen it to increase output particle size. When adjusting CS110 4FT Symons cone crusher, users need to balance target aggregate size and production capacity. Smaller CSS will get finer product but lower hourly throughput and faster liner wear.

Technical Parameters of Baichy CS110 4FT Standard Symons Cone Crusher

The following table shows full technical parameters of CS110 4FT standard Symons cone crusher. Quarry engineers can reference these data for crushing plant flow design.

Note: The actual throughput of CS110 4FT Symons cone crusher varies depending on raw material hardness, feed particle size, closed side setting and moisture content. Harder granite will reduce the hourly output.

Application Scenarios of CS110 4FT Standard Symons Cone Crusher

The CS110 4FT Symons cone crusher is widely used in medium crushing stage. It fits stationary crushing plants, and can also be matched with mobile crushing skid-mounted units.

Symons cone crusher customer site

Granite Quarry Aggregate Production

Granite is a typical hard abrasive rock, which makes it one of the most common application scenarios for CS110 4FT Symons cone crusher. Granite aggregate is used for highway construction, high-speed railway ballast and concrete raw material. A complete granite crushing line usually uses jaw crusher for primary crushing, then CS110 4FT standard Symons cone crusher for secondary medium crushing, and vibrating screen for grading. If fine sand is needed, add a tertiary crusher or sand making machine after the cone crusher.

Many quarry operators select CS110 4FT Symons cone crusher because its standard cavity handles big incoming granite pieces well. Compared with fine-type short head cone crusher, the standard model is less prone to blockage when processing coarse granite feed.

Basalt Crushing for Road Construction

Basalt also has high compressive strength. Basalt aggregate has excellent anti-slip performance for asphalt pavement. The CS110 4FT Symons cone crusher can process basalt stably. Plant designers set CSS around 25–35 mm to produce qualified road aggregate. Users should prepare spare mantle and concave because basalt is highly abrasive and accelerates liner wear.

Iron Ore & Metal Mine Secondary Crushing

In metal mining projects, the CS110 4FT Symons cone crusher works as secondary crushing equipment. After primary jaw crushing, iron ore is fed into the cone crusher to reduce particle size before grinding mills. Smaller ore particles improve grinding mill efficiency and cut power consumption. Mine customers prefer the spring protection system of CS110 4FT Symons cone crusher because metal debris from mining often enters crushing chamber.

River Pebble Crushing Plant

River pebble is hard and round-shaped. The CS110 4FT Symons cone crusher breaks pebbles into construction aggregate. River pebble crushing usually requires two-stage crushing: jaw crusher + CS110 4FT cone crusher, then sand maker for artificial sand.

Limestone Medium Crushing for Cement Industry

Limestone has relatively lower hardness compared to granite and basalt. When processing limestone, CS110 4FT Symons cone crusher can reach higher production capacity. The crushed limestone is used as raw material for cement factories and lime plants.

Real Customer Case Studies of CS110 4FT Standard Symons Cone Crusher

Case 1: 120 TPH Granite Quarry in Kenya

A local quarry company in Kenya planned a stationary granite crushing plant to supply aggregate for highway projects. The raw granite rock has compressive strength up to 280 MPa. The customer’s original plant only used jaw crusher, and the output particle shape was poor, with many flat and elongated stones.

Baichy technical team designed a crushing line: ZGPE600×900 jaw crusher as primary crusher + CS110 4FT standard Symons cone crusher + 3YK1860 vibrating screen. The CS110 4FT Symons cone crusher takes jaw crushed material below 180 mm. Operators set CSS at 30 mm. The stable throughput reaches 110–120 tons per hour. After the CS110 4FT cone crusher, the aggregate cubicity improved greatly and meets highway aggregate standard.

Before purchasing CS110 4FT Symons cone crusher, the customer worried about frequent blockage and high maintenance cost. Baichy provided operation training and wear part maintenance guide. After 18 months of operation, the customer reported that the spring protection system successfully avoided two equipment accidents when metal fragments fell into the crushing cavity. The customer ordered a spare set of mantle and concave during the annual maintenance shutdown.

Case 2: 100 TPH River Pebble Crushing Project in Vietnam

A Vietnam building materials manufacturer built a river pebble crushing and artificial sand production line. Raw river pebble size ranges from 100 mm to 200 mm. The customer needed 20–40mm aggregate for concrete mixing station and manufactured sand.

Process layout: Hopper → vibrating feeder → PE500×750 jaw crusher → belt conveyor → CS110 4FT Symons cone crusher → vibrating screen. Oversized material from screen returns back to CS110 4FT cone crusher for re-crushing. The CS110 4FT standard Symons cone crusher runs stably at around 90–100 t/h. The customer commented that the CS110 4FT Symons cone crusher has simple structure, and local maintenance workers can master liner replacement quickly.

Case 3: Iron Ore Secondary Crushing Plant in South Africa

This South African mining customer runs iron ore extraction. The ore after primary jaw crushing needs to be reduced to below 35 mm before ball mill grinding. The customer selected Baichy CS110 4FT Symons cone crusher for secondary crushing. The spring overload protection solved the risk caused by occasional tramp iron in ore. The CS110 4FT cone crusher keeps continuous operation, lowering the feeding particle size of ball mill, and the whole grinding system energy consumption dropped by about 12%.

Advantages of Baichy CS110 4FT Standard Symons Cone Crusher

1. Reliable spring overload protection: The classic Symons spring design effectively protects cone crusher against tramp metal damage. It is easy to repair and low cost compared to fully hydraulic cone crusher.

2. Good particle shape: The gyratory compression crushing action of CS110 4FT Symons cone crusher produces cubic aggregate, which is highly valued for road and concrete projects.

3. Wide feed opening: The standard cavity of CS110 4FT Symons cone crusher accepts larger feed stones than short head cone crusher, suitable for secondary medium crushing.

4. Easy maintenance: The structure of CS110 4FT Symons cone crusher is mature. Wear parts like mantle and concave can be replaced without special complicated tools. Spare parts supply is available from Baichy Heavy Industry.

5. Stable forced lubrication system: Thin oil lubrication reduces bearing wear and maintains long service life under continuous heavy load.

Limitations & Key Operation Notes for CS110 4FT Symons Cone Crusher

The CS110 4FT standard Symons cone crusher is not suitable for fine crushing tasks. If users need 5–15mm fine aggregate, short head cone crusher is a better choice. Operators must strictly control feed size. Feeding too much oversized rock will trigger frequent spring overload and accelerate liner wear.

Operators need to keep the cone crusher cavity fed evenly. Empty running of CS110 4FT Symons cone crusher should be minimized. Uneven feeding leads to uneven liner abrasion and irregular product gradation. Daily inspection checklist includes lubricant pressure, oil temperature, spring tension, mantle and concave wear condition.

FAQ about CS110 4FT Standard Symons Cone Crusher

Q1: What is the difference between 4FT standard Symons cone crusher and 4FT short head cone crusher?

A: CS110 4FT standard Symons cone crusher adopts medium crushing cavity, larger feed opening for secondary crushing. 4FT short head type has narrow cavity, smaller feed inlet and is used for fine crushing to get finer aggregate.

Q2: What raw materials can CS110 4FT Symons cone crusher process?

A: CS110 4FT Symons cone crusher can crush hard and medium hard rocks including granite, basalt, iron ore, river pebble, limestone, diabase and other mineral stones.

Q3: What is the typical capacity range of Baichy CS110 4FT Symons cone crusher?

A: The capacity ranges from 80 to 150 tons per hour. Actual output depends on rock hardness, feed size, closed side setting and moisture content of raw material.

Q4: How to adjust the discharge particle size of CS110 4FT Symons cone crusher?

A: Users adjust the closed side setting by rotating the adjustment ring on top of the cone crusher. Tightening the adjustment ring reduces discharge size; loosening it increases particle size.

Q5: What safety measure does CS110 4FT Symons cone crusher use for overload protection?

A: CS110 4FT Symons cone crusher uses spring safety protection system. When unbreakable material enters the crushing cavity, springs compress to open the discharge gap and discharge foreign objects automatically.

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.

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