Marcy 010C-005/007 Dual Roll Crusher

Overview

The Marcy 010C-005 and 010C-007 Dual Roll Crushers are precision-engineered intermediate-size reduction machines designed for consistent, controlled comminution of friable rocks, ores, coal, limestone, slag, and other rock-like materials in geological, metallurgical, and mineral processing laboratories. Operating on the principle of compression between two counter-rotating rolls—typically one fixed and one spring-loaded—the unit delivers predictable particle size reduction with minimal overgrinding or fines generation. These crushers achieve a nominal top-size output of –10 mesh (2 mm), with typical closed-circuit settings ranging from ½ inch to 20 mesh; under standard operating conditions, approximately 80% of the product passes the 20-mesh (840 µm) sieve. The crusher’s inherent design yields a narrow particle size distribution—a critical attribute for downstream analytical workflows requiring representative sample splitting, assay preparation, or feed conditioning for subsequent grinding or screening stages. With reduction ratios consistently maintained between 3.7:1 and 4.0:1, the Marcy dual roll system bridges the gap between primary jaw crushing and fine grinding, ensuring reproducible feed consistency without excessive energy input or mechanical degradation.

Key Features

• Prefabricated heavy-gauge steel construction with inclined feed hopper—designed for gravity-assisted material flow and optimized throughput.
• Electrical safety interlock system integrated into hopper access points, compliant with OSHA 1910.212 and ANSI B11.19 standards for operator protection.
• Reinforced bearing housings accommodating high-load radial and thrust forces; fitted with sealed, maintenance-free tapered roller bearings.
• Robust structural steel frame anchoring both crusher assembly and drive motor—engineered to minimize vibration transmission and maintain alignment under continuous duty.
• Hardened nickel-chrome alloy roll surfaces (cast nickel-hard iron) offering extended service life and resistance to abrasive wear during prolonged operation.
• Manually actuated side-tilt adjustment mechanism enabling rapid, repeatable roll gap setting—from 12.7 mm (½”) down to 0.84 mm (20 mesh)—without disassembly.
• High-torque compression springs providing overload protection: automatically retracting the movable roll upon encountering non-crushable tramp material, preventing gear or shaft damage.
• Full-coverage steel drive guard conforming to ISO 13857 and ANSI B11.1 safety clearance requirements.

Sample Compatibility & Compliance

The Marcy 010C series is validated for use with low-to-medium hardness materials (Mohs hardness ≤6.5), including but not limited to quartzite, dolomite, shale, bauxite, phosphate rock, and industrial coals. It is unsuitable for highly abrasive, fibrous, or ductile feedstocks such as silica sand, stainless steel turnings, or rubber compounds. All units comply with CE machinery directive 2006/42/EC when installed with appropriate local electrical integration. Electrical components meet UL 508A and IEC 60204-1 standards. Documentation includes full Declaration of Conformity, mechanical risk assessment per ISO 12100, and noise emission data (<85 dB(A) at 1 m per ISO 3744).

Software & Data Management

While the Marcy 010C-005/007 operates as a standalone mechanical system without embedded digital controls, it is fully compatible with laboratory information management systems (LIMS) via manual log entry protocols. Standard operating procedures (SOPs) support GLP-compliant recordkeeping—including batch ID, feed mass, roll gap setting, motor runtime, and sieve analysis results—for traceability in QA/QC environments. Optional integration with digital torque meters or load-cell–equipped feed hoppers enables real-time throughput monitoring and correlation with particle size distribution data generated by downstream laser diffraction or sieve analysis instruments.

Applications

• Preparation of representative sub-samples for XRF, ICP-OES, and fire assay in exploration geochemistry labs.
• Intermediate size reduction prior to pulverization in ASTM D3174 (ash content) and D3175 (volatile matter) coal testing workflows.
• Feed conditioning for Bond Work Index testing (ASTM E322, ISO 5068) where controlled top-size uniformity is required.
• Mineral liberation studies requiring narrow PSD feed for SEM-EDS or QEMSCAN® analysis.
• Quality control of crushed aggregate gradation in civil engineering materials testing labs (ASTM C136, AASHTO T 27).

FAQ

What is the maximum feed size accepted by the 010C-005 and 010C-007 models?

The recommended maximum feed size is 65 mm (2.5 inches) for the 010C-005 and 230 mm (9 inches) for the 010C-007—aligned with the roll diameter and nip angle geometry.
Can these crushers be used in continuous production environments?

Yes—both models are rated for intermittent or continuous operation up to 8 hours per shift, provided ambient temperature remains below 40°C and adequate dust suppression is implemented per OSHA 1910.94.
Is calibration documentation provided with shipment?

Roll gap calibration is verified using certified gauge blocks prior to dispatch; a Certificate of Conformance (CoC) detailing dimensional verification and functional test results is included.
Are replacement rolls available as spare parts?

Yes—nickel-hard cast rolls, bearing assemblies, spring kits, and drive belts are stocked globally through authorized Marcy service partners with lead times under 10 business days.
Does the unit meet FDA or pharmaceutical GMP requirements?

While not designed for direct pharmaceutical processing, the 010C series supports USP and sample prep workflows when operated within a validated cleanroom environment and documented under site-specific SOPs.