Roll Crushers
Sealed Double Roll Crusher with High Chrome Alloy Steel Rollers for Laboratory Sample Preparation
Item Number: PP-RC10
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Product Overview
This equipment is a high-precision sealed double roll crusher designed specifically for the fine crushing of medium and low-hardness materials with compressive strength ratings under 700 kg/cm². Utilizing two counter-rotating smooth rollers cast from high-chromium alloy steel, the system compresses and shears incoming sample materials down to fine, uniform granules. The controlled crushing mechanism ensures minimal creation of excessive fines and dust while maintaining strict particle size uniformity across every processing batch.
Engineered for demanding research and testing environments, this unit is widely utilized across geology, mining, metallurgy, building materials, chemical processing, and material science laboratories. Its enclosed architecture renders it ideal for secondary sample reduction where dust containment, cross-contamination prevention, and precise size fractioning are critical operational prerequisites prior to downstream analytical procedures or compaction processes.
Built with heavy-duty structural components, the crusher offers exceptional durability, operational safety, and maintenance simplicity. Featuring an integrated spring-loaded overload protection mechanism, a manual fine gap adjustment handwheel, and an enclosed dust-tight housing, this machinery delivers reliable performance, consistent throughput, and prolonged service life even under continuous laboratory processing conditions.
Key Features
- High-Chromium Alloy Rollers: Specially heat-treated smooth roller shells deliver a surface hardness of HRC 58–62, offering extreme wear resistance, minimized metallic contamination, and extended operational lifespan when processing abrasive minerals.
- Dust-Tight Enclosed Housing: The fully sealed box enclosure contains all airborne dust generated during crushing, protecting laboratory environments, ensuring operator health, and preventing sample loss during processing.
- Precision Manual Gap Adjustment: An intuitive handwheel mechanism connected to a sliding key assembly allows operators to fine-tune the clearance between rollers, enabling precise output particle size control between 1 mm and 3 mm.
- Spring-Loaded Tramp Protection: Integrated heavy-duty compression springs allow the non-driven roller bearing assembly to yield laterally when uncrushable foreign objects enter the crushing chamber, preventing mechanical jam-ups and structural damage.
- Controlled Feeding Assembly: Features an adjustable feed hopper shutter and internal side baffles that regulate material feed rate and direct flow straight into the crushing zone, preventing side leakage and internal housing abrasion.
- Synchronized Dual-Shaft Drive: A high-torque electric motor drives the main shaft via heavy-duty V-belts, which seamlessly transfers power to the counter shaft via a tensioned chain sprocket system for synchronized, opposite rotation.
- Low-Fines Particle Distribution: The squeezing action of the dual smooth rollers produces uniform granular output with significantly lower dust and ultra-fine generation compared to high-impact hammer or jaw crushing methods.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Geology & Mining Exploration | Fine crushing of mineral ores, rock cores, and geological specimens prior to pulverizing and XRF/ICP analysis. | High particle uniformity with minimal dust loss ensures representative, repeatable analytical samples. |
| Metallurgical Quality Control | Size reduction of iron ore, sinter, slag, and refractory raw materials with compressive strength under 700 kg/cm². | Hardened HRC 58-62 roller surfaces resist surface gouging and abrasive wear from tough metallurgical specimens. |
| Chemical & Advanced Materials | Fine comminution of industrial salts, crystalline compounds, synthetic minerals, and advanced ceramic precursors. | Fully sealed enclosure prevents airborne chemical contamination and protects surrounding laboratory air quality. |
| Cement & Building Materials | Crushing raw limestone, clinker, gypsum, and concrete samples for chemical assay and physical quality testing. | Quick handwheel gap adjustment enables rapid reconfiguration between different product discharge size specifications. |
Technical Specifications
| Specification Parameter | PP-RC10-250x150 | PP-RC10-200x125 | PP-RC10-200x75B |
|---|---|---|---|
| Roller Surface Finish | Smooth (Light Surface) | Smooth (Light Surface) | Smooth (Light Surface) |
| Roller Shell Hardness | HRC 58–62 | HRC 58–62 | HRC 58–62 |
| Max Material Compressive Strength | < 700 kg/cm² | < 700 kg/cm² | < 700 kg/cm² |
| Roller Dimensions (Diameter × Width) | 250 × 150 mm | 200 × 125 mm | 200 × 75 mm |
| Feed Particle Size | < 13 mm | < 13 mm | < 13 mm |
| Discharge Particle Size Range | < 3 – 1 mm | < 3 – 1 mm | < 3 – 1 mm |
| Production Capacity | 300 – 400 kg/h | 250 – 350 kg/h | 200 – 300 kg/h |
| Roller Rotational Speed | 400 r/min | 400 r/min | 400 r/min |
| Motor Model Designation | Y112M-4 | Y100L1-4 | Y90L-4 |
| Motor Power Rating | 4.0 kW | 3.0 kW | 1.5 kW |
| Electrical Requirement | 3-Phase 380V | 3-Phase 380V | 3-Phase 380V |
| Overall Equipment Dimensions (L × W × H) | 750 × 500 × 900 mm | 750 × 500 × 870 mm | 640 × 455 × 875 mm |
| Total Equipment Net Weight | 350 kg | 350 kg | 230 kg |
Why Choose This Product
- Heavy-Duty Wear Components: Equipped with ultra-hard high-chromium alloy roller shells (HRC 58-62) that maintain precise crushing tolerances and deliver superior long-term resistance against abrasive media.
- Operator & Environment Protection: Fully enclosed dust containment housing eliminates laboratory dust hazards, preserving sample integrity while maintaining compliance with occupational health standards.
- Fail-Safe Mechanical Resilience: Built-in heavy compression spring mechanisms automatically buffer uncrushable tramp objects, virtually eliminating mechanical failure risks and reducing downtime.
- Repeatable Size Distribution: Precision lead-screw gap adjustment combined with heavy-duty bearing sliding blocks guarantees tight control over output size distribution for accurate testing downstream.
Please contact our engineering sales specialists today to receive a detailed quote, discuss custom voltage configurations, or select the optimal roll crusher model for your sample preparation lab.
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