Huashengming Heavy Industry has established a strong reputation in the industry thanks to its advanced technology and reliable performance. With over 20 years of specialisation in mining machinery, we have served over 3,000 customers and exported to 30 countries worldwide. For medium-sized spring-type double-roll crushers with a production capacity of 20 tph stone crusher (such as the 2PGT750×500 and 2PGT800×600 models), their performance characteristics and applicability are as follows:
20 tph stone crusher
1. Core Parameters and Performance Characteristics
Basic Performance
Processing Capacity: Nominal capacity of 10–50 tonnes per hour (average measured capacity of 20–25 tonnes), suitable for the needs of small to medium-sized sand and gravel plants.
Feed Size: ≤40 mm (suitable for medium to low hardness materials such as limestone, shale, and construction waste, with compressive strength ≤160 MPa).
Discharge Size: Adjustable from 1–20 mm via manual spring adjustment of the roll gap, with an error margin of ±3 mm.
Power configuration: Dual motor drive (2PGT750×500 with 45 kW power, 2PGT800×600 with 55 kW power), power consumption of 0.8–1.2 kWh/tonne, average daily energy cost approximately 100 yuan (based on 20 tonnes/hour).
Durability design
Roll shell material: high-manganese steel alloy (not high-chromium type), lifespan approximately 3,000 hours, single roll replacement cost ≤1,200 yuan.
Overload protection: spring-loaded automatic disengagement mechanism, prevents equipment damage when encountering reinforcing bars or other hard objects (manual reset required).
Structural Features
Compact mobile design: Tyre chassis supports non-powered towing, suitable for temporary construction site relocation.
Modular maintenance: Key components (such as bearings and springs) can be quickly replaced, reducing downtime.
2. Application Scenarios and Advantage Analysis
Advantage Highlights
High cost-effectiveness: Price range of 60,000–100,000 yuan, 15%–20% lower than comparable products (e.g., certain brands) with the same capacity, with a payback period of 3–6 months.
Low maintenance costs: Simple structure allows users to replace roll liners independently, with annual maintenance costs <5,000 yuan.
Environmental protection and energy efficiency: Enclosed design reduces dust, noise level ≤75 dB, compliant with green production standards.
Typical Application Scenarios
Limestone/Shale Sand Production: Output particle size 3–10 mm, cubic particle ratio >85%, used as aggregate for C30 concrete, with costs 30% lower than purchased sand and gravel.
Construction Waste Recycling: Crushing concrete debris (removing reinforcing bars) to produce 0–30 mm recycled aggregate, with a utilization rate ≥90%.
Small quarries: Processes medium to low hardness materials such as bluestone and coal gangue, with a stable hourly output of 20 tonnes and a significant return on investment.
Equipment Limitations and Solutions
Inconvenient adjustment: Manual adjustment of the roller gap requires shutdown, resulting in low particle size control accuracy (±3mm).
→ Upgrade recommendation: Add 30,000 yuan to upgrade to the semi-hydraulic model (2PGY series), which supports hydraulic real-time gap adjustment.
Wet material sticking to rollers: When moisture content exceeds 10%, material tends to stick to the rollers, requiring manual cleaning per shift.
→ Improvement solution: Install a scraper device (cost +2,000 yuan) or pre-dry the material.
No screening function: A vibrating screen must be externally installed (cost +8,000 yuan) to achieve aggregate grading, increasing the finished product price by 20%.
20 tph stone crusher
4. Competitor comparison and cost-effectiveness analysis
Indicator HuaShengMing 2PGT800×600 Market-equivalent models
Price 60,000–80,000 yuan 80,000–120,000 yuan (e.g., Shanghai Jianye)
Roll liner lifespan 3,000 hours 2,000–2,500 hours
Power consumption 55 kW (dual motor) 65–75 kW
Wet material adaptability Manual cleaning required Some models come standard with anti-adhesion roller design
Conclusion: Huashengming has significant advantages in price, energy consumption, and maintenance costs, but its automation level is inferior to hydraulic models.
5. Procurement Recommendations and Value-Added Services
Model Selection Recommendations:
Budget-conscious: Choose the spring model (2PGT750×500, starting at 60,000), suitable for dry materials and intermittent operation scenarios.
Efficiency-focused: Choose the hydraulic model (2PGY800×600, starting at 120,000), supporting hydraulic gap adjustment and continuous wet material crushing.
Key Inspection Points:
Require a material composition report for the roller lining (manganese content ≥12%) and conduct on-site testing of limestone crushing performance.
Verify overload protection response to prevent equipment damage due to spring failure.
Manufacturer Support:
Free Material Testing: Test production capacity and output particle size at the Gongyi factory. Trade-in of Old Machines: Up to 30% offset against the price of a new machine to reduce initial investment.
Summary
The Huashengming 20-tonne per hour double-roll crusher (such as the 2PGT750×500/800×600) is a cost-effective choice for small and medium-sized sand and gravel plants. Its advantages include low investment, easy maintenance, and quick return on investment. Its limitations include automation level and wet material processing capacity. Recommended applications: Budget-constrained crushing of medium to low hardness materials (e.g., limestone sand production, construction waste recycling). For higher automation or wet material adaptability, upgrading to a hydraulic model is recommended at an additional cost.
