Rotary Crusher Machine

Rotary Crusher Machine – Product Overview

Designed for high-capacity primary crushing, a Rotary Crusher Machine uses gyratory motion of its crushing cone within the housing to exert compression and bending forces on feed materials. Take the PXZ1623 model as an example: this Rotary Crusher Machine achieves a single-unit throughput of 2,800 to 3,200 tons per hour, accepting feed sizes up to 1,350 mm. When feed size is maintained below 1,000 mm, throughput stability exceeds 95% of rated capacity. Technical data presented here conforms to GB/T 26964-2011 "Gyratory Crusher" national standards; ISO 9001-certified manufacturing processes are applied across relevant production facilities.

How Rotary Crusher Machine Works – Operating Principle Explained

During operation, the motor drives the eccentric sleeve via a belt pulley and bevel gears, causing the crushing cone to perform a gyratory motion around the machine's center line. The cone surface alternately approaches and recedes from the fixed cone surface, crushing materials by compression and bending forces. The crushed material is continuously discharged from the bottom by gravity. Key components include the drive unit, base frame, eccentric sleeve, crushing cone, middle frame, crossbeam, and hydraulic system.

Rotary Crusher Machine Technical Specifications – PXZ Series Full Parameter Table

The PXZ series of Rotary Crusher Machine covers a capacity range from 140 to 3,200 tons per hour. The core technical parameters for each model are as follows:

Total weight ranges from 32 to 481 tons, with crushing cone bottom diameter from 1,200 to 2,000 mm. Values are reference under standard conditions; actual capacity varies with material properties and site conditions.

Rotary Crusher Machine Advantages – Performance Comparison with Jaw Crusher

The processing capacity of a Rotary Crusher Machine is 1.5 to 2 times that of a jaw crusher with the same feed opening. At 1,200 mm feed opening, the PXZ1216 handles 1,250-1,480 t/h versus 600-800 t/h for a jaw crusher. Power consumption per ton is 30%-50% lower, and foundation weight is only 2-3 times machine weight versus 5-10 times for jaw crushers. The hydraulic system resets within 30 seconds after discharging uncrushable objects.

Rotary Crusher Machine Selection Guide – How to Choose the Right Model

Selection is based on three parameters: material hardness, capacity, and feed size. Hard rock with Protodyakonov coefficient f=8-16 requires the heavy-duty series; medium-hard materials below f=8 can use the light-duty series. Maximum feed size should not exceed 85% of feed opening. Installation height is greater than jaw crushers; for projects below 500 t/h with limited plant height, a jaw crusher may be a more practical choice.

Rotary Crusher Machine Applications – Iron Ore, Granite and Mining Scenarios

The Rotary Crusher Machine is suited for primary crushing in large-scale iron and copper mines with annual throughput above 5 million tons. A South American open-pit copper mine reports over 10,000 t/h from a single unit. The Roy Hill project in Western Australia and the Tonkolili iron ore mine in Sierra Leone both employ large gyratory crushers as primary equipment. The Zhunuo copper mine in Tibet, at 4,700 m altitude, uses a PXZ62-75 model. In granite aggregate production, capacity is approximately 18% higher than when processing iron ore; for limestone and dolomite, it is 15%-20% higher. In an 8-million-ton iron ore project, a single PXZ1417 replaced two jaw crushers, reducing floor space by 40%, cutting operators from 6 to 3 per shift, and achieving 92% average operating rate over 18 months of recorded operation.

Rotary Crusher Machine Investment Payback Period Reference

In an 8-million-ton iron ore project, one PXZ1417 Rotary Crusher Machine replaces two jaw crushers. Equipment cost increases by approximately 30%, but civil construction investment decreases by 40%, and manpower drops from 6 to 3 operators per shift. After accounting for electricity and liner costs, annual operating costs are 18%-22% lower than the jaw crusher configuration. Labor cost references are based on National Bureau of Statistics 2025 manufacturing average wage data; industrial electricity prices reference East China region large-industry rates of RMB 0.6-0.8/kWh. Payback period is approximately 18-24 months under the above assumptions.

Rotary Crusher Machine Installation and Operating Conditions

When feed moisture rises from 5% to 12%, throughput decreases by approximately 22%. A magnetic separator is recommended at the feed conveyor end. The Rotary Crusher Machine requires a reinforced concrete foundation with anchor bolt positioning deviation within ±2 mm. Oil pressure should be 0.08-0.15 MPa, oil temperature below 60°C, and a no-load test run of at least 4 hours is required.

Three issues are often observed during installation:

Foundation curing period. Compressing curing to under 7 days can lead to foundation settlement after 3-6 months, with discharge deviation exceeding 5 mm. Oversized particle content rises from 5% to 18%, increasing downstream grinding energy by 12%. Industry practice recommends a curing period of at least 14 days with bearing capacity testing before installation.

Conveyor belt alignment.Deviation beyond 3 degrees correlates with uneven crushing chamber wear, with liner life reduction of 20%-30%. Throughput per liner set drops from 1.8 to 1.3 million tons, increasing annual liner replacement costs by approximately 25%. Laser alignment is commonly used to control deviation within 1 degree.

Hydraulic system air bleeding. Incomplete bleeding delays discharge adjustment response by 2-3 seconds, affecting overload protection reliability. Standard procedure involves at least 3 full bleeding cycles after oil filling until cylinder movement is smooth.

Rotary Crusher Machine Data Sources and Reference Standards

Technical parameters comply with GB/T 26964-2011 "Gyratory Crusher" national standards. Capacity data are reference values under medium-hardness ore and standard discharge conditions; actual performance varies with material characteristics, moisture, and installation. Parameters have been cross-referenced with publicly available data from FLSmidth, Metso, and other international brands.

Rotary Crusher Machine FAQ – Common Questions and Answers

How to choose between a Rotary Crusher Machine and a jaw crusher？

At the same feed opening, capacity is 1.5-2 times that of a jaw crusher. Below 500 t/h, the jaw crusher requires lower initial investment; above this threshold, the Rotary Crusher Machine is more economical.

Does moisture cause clogging in a Rotary Crusher Machine？

Performance is consistent below 8% moisture. Above 12%, pre-screening is advised. For sticky materials, increasing the discharge opening to the upper limit improves throughput.

When should liners of a Rotary Crusher Machine be replaced？

Hard materials like magnetite typically require replacement every 3-4 months; medium-hard materials like limestone can last over two years. Replacement is needed when liner wear exceeds two-thirds of initial thickness.

What is the foundation investment for a Rotary Crusher Machine？

Foundation costs are 15%-25% of equipment price, compared to 30%-40% for jaw crushers. However, installation height is greater, requiring higher plant clearance.