Efficient Primary Crusher — Equipment Overview
The Efficient Primary Crusher (DLEV Series) is a heavy-duty primary jaw crusher engineered specifically for mining operations requiring robust first-stage ore breaking and aggregate reduction. With processing capacities spanning from 200 to 1,000 t/h across four model configurations, it handles materials up to 320 MPa compressive strength — including granite, basalt, limestone, quartzite, river pebbles, iron ore, and copper ore — delivering a primary crushing ratio of approximately 6:1 to 10:1 in each pass.
The machine features a modular design for simplified on-site assembly and maintenance, an integrated motor mount that eliminates the need for a separate motor base, and large-size premium-quality bearings rated for extended service under continuous heavy-load operation. The V-shaped deep-crushing cavity significantly increases throughput while producing finer and more uniform discharge material. An optimized meshing angle and eccentric stroke deliver superior single-pass reduction, while higher rotating speeds amplify throughput and crushing frequency per cycle.
Hydraulic double wedges enable rapid and precise discharge opening adjustment without halting production. The automatic quantitative lubrication system ensures consistent bearing protection throughout operating cycles, and elastic limit vibration dampers absorb peak dynamic loads to protect foundation integrity and extend structural fatigue life.
Efficient Primary Crusher — Process Flow
Step 1 — Raw Material Feeding Blasted run-of-mine ore or quarry rock is loaded into the crusher inlet via loader, excavator, or upstream feeder. Maximum feed sizes range from 600 mm (DLEV106) to 1,000 mm (DLEV160), accommodating full-sized primary feed without pre-screening.
Step 2 — Deep Cavity Primary Crushing Material enters the V-shaped crushing chamber where optimized eccentric stroke and meshing angle apply concentrated compressive force. The deep-cavity design maximizes the effective working area, ensuring each material particle undergoes multiple compression cycles as it descends through the chamber toward the discharge opening.
Step 3 — Hydraulic Discharge Control Crushed product exits through the adjustable outlet clearance. The hydraulic double-wedge mechanism allows operators to fine-tune the discharge setting between 90–300 mm depending on downstream requirements — wider settings maximize throughput for coarse aggregate; narrower settings produce finer feed for secondary crushers.
Step 4 — Conveyance to Secondary Stage Discharged material is transferred by belt conveyor to the next stage of the crushing circuit — typically a cone crusher, impact crusher, or hammer mill — where intermediate and fine crushing completes the size reduction process.
Step 5 — Lubrication Monitoring and Maintenance The automatic lubrication system continuously supplies metered oil quantities to all critical bearing points during operation. The integrated vibration damping system absorbs impact loads transmitted through the frame. Modular panel access allows quick inspection of jaw plates and bearings without major disassembly.
Efficient Primary Crusher — Technical Parameters
Model Specifications
| Model |
Material Hardness (MPa) |
Inlet Size (mm) |
Outlet Clearance (mm) |
Feed Size (mm) |
Motor Power (kW) |
Processing Capacity (t/h) |
| DLEV106 |
320 |
1,060 x 700 |
90 - 200 |
≤600 |
110 |
200 - 300 |
| DLEV125 |
320 |
1,250 x 850 |
100 - 250 |
≤800 |
160 |
400 - 500 |
| DLEV140 |
320 |
1,400 x 1,070 |
125 - 250 |
≤900 |
200 |
600 - 700 |
| DLEV160 |
320 |
1,600 x 1,200 |
150 - 300 |
≤1,000 |
250 |
700 - 1,000 |
Efficient Primary Crusher — Project Cases
Case 1 — Iron Mine Primary Crushing Station in Peru An iron mining operation in the Andes Mountains deployed one unit of DLEV125 as the primary stage in their two-stage crushing line feeding a ball mill grinding circuit. Processing blasted hematite ore at 450 t/h with a feed size of up to 750 mm, the crusher reduced material to below 180 mm in a single pass. The hydraulic double-wedge adjustment enabled rapid switching between coarse mode (for direct SAG mill feed) and fine mode (for cone crusher feed) without production interruption, increasing daily mine output flexibility by over 30%.
Case 2 — Granite Quarry Aggregate Plant in Indonesia A granite quarry near Bandung installed a DLEV160 unit as the primary breaker in a three-stage aggregate production line supplying highway construction projects across Java. Operating at 880 t/h with maximum feed size of 950 mm, the machine delivers crushed granite at 200–280 mm discharge setting to downstream cone crushers. The integrated motor mount eliminated the need for a separate concrete motor plinth during site construction, reducing civil works cost and installation time by approximately three weeks compared to conventional jaw crusher installations.
Case 3 — Copper-Gold Ore Primary Crushing in Kazakhstan A copper-gold polymetallic mining project in East Kazakhstan integrated one DLEV140 and one DLEV106 in parallel configuration as their dual-primary crushing station. Combined output reaches 950 t/h handling sulfide ore and oxide ore alternately with hardness ranging from 220 to 310 MPa. The automatic lubrication system proved critical during winter operations at temperatures below -20°C, maintaining consistent oil flow and preventing bearing damage that had previously affected competitor equipment at the same site. The 12-month warranty and local spare parts depot ensured zero unplanned downtime during the initial 18-month production ramp-up phase.
Efficient Primary Crusher — FAQ
Q1: How do I select the correct DLEV model for my mining operation?
A: Model selection depends primarily on three factors: your target hourly capacity, the maximum raw feed size from your blasting or excavation operation, and your downstream equipment's preferred feed size. DLEV106 handles 200–300 t/h with feed up to 600 mm — suitable for small-to-medium mines and pilot projects. DLEV125 covers 400–500 t/h with feed up to 800 mm — ideal for mid-size metal mines and medium quarries. DLEV140 delivers 600–700 t/h with feed up to 900 mm — designed for large-scale aggregate plants and established mining operations. DLEV160 reaches 700–1,000 t/h with feed up to 1,000 mm — the recommended choice for mega-quarries and high-throughput open-pit mines requiring maximum primary crushing capacity. Our engineering team provides complimentary mine-site assessment and model recommendation at no charge.
Q2: What are the advantages of hydraulic double-wedge discharge adjustment versus traditional gasket or shim systems?
A: The hydraulic double-wedge mechanism allows operators to adjust the discharge opening quickly and precisely without stopping the machine or manually inserting shims — a significant operational advantage over traditional gasket-based adjustment methods. This means you can switch between coarse and fine crushing modes in minutes rather than hours, adapting instantly to changing downstream demands or material specifications. Additionally, the hydraulic system provides more accurate and repeatable position control than manual shims can achieve, resulting in more consistent product gradation and reducing the risk of human error during adjustment procedures.
Q3: How does the automatic lubrication system improve reliability in harsh mining environments?
A: The automatic intelligent quantitative lubrication system supplies precisely measured oil to all critical bearing points on a timed cycle, eliminating the risk of under-lubrication caused by missed manual checks or operator oversight. This is especially valuable in remote mining sites where continuous monitoring may not be practical, and in extreme temperature conditions — both high heat and sub-zero cold — where manual lubrication timing becomes inconsistent. By maintaining optimal oil film thickness around bearings at all times, the system reduces friction-related wear, prevents overheating failures, and extends bearing service life by an estimated 40% to 60% compared to manually maintained equivalents. All lubrication parameters are monitored and logged through the PLC interface, providing predictive maintenance data that helps schedule replacement before failure occurs.
Our sand and gravel aggregate production lines boast extensive and all-round coverage, and we offer a complete range of configurations from individual standalone equipment to full turnkey production lines, including Crushing Equipment, Sand Making Equipment, Screening Equipment, Feeding Equipment, Mining Conveyor and Mobile crusher. We provide customized crushing and processing solutions for a full spectrum of materials including bluestone, limestone, basalt, granite, pebble, coal gangue, calcite, quartz stone, dolomite, iron ore, barite, diabase, tuff and high calcium limestone, as well as targeted processing solutions for kaolin. We also deliver professional crushing solutions for industrial solid wastes such as slag and tailings, and comprehensive treatment solutions for construction & demolition waste. In addition to fixed production line solutions for various materials, we also supply flexible Mobile Crawler Unit Solutions to meet diverse on-site operation needs of sand and gravel aggregate production.
