Gilson SS-8RF Tapping Sieve Shaker for 8-inch (203 mm) Sieves
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | SS-8RF |
| Pricing | Available Upon Request |
Overview
The Gilson SS-8RF Tapping Sieve Shaker is a precision-engineered laboratory instrument designed for standardized particle size distribution analysis using dry sieving methods. It operates on the principle of controlled vertical tapping combined with rotational motion—termed “circular tapping”—to ensure uniform particle reorientation and efficient passage through sieve apertures. Unlike linear shakers that induce dead zones and incomplete stratification, the SS-8RF’s patented dual-axis motion (48 taps per minute + continuous 360° rotation) promotes three-dimensional particle mobility, enabling high-fidelity separation across broad granulometric ranges. This mechanism complies with core mechanical sieving standards including ASTM E11, ISO 3310-1, and USP , supporting reproducible results required in QA/QC, geotechnical testing, pharmaceutical excipient characterization, and aggregate quality control.
Key Features
- Patented circular tapping action: 48 vertical taps/min synchronized with continuous 360° rotation to eliminate channeling and maximize sieve efficiency
- High-capacity stack configuration: accommodates up to twenty 8-inch (203 mm) half-height sieves or ten full-height sieves per test cycle
- EZ-Clamp™ quick-release system: one-handed clamping via ergonomic rotary knob; eliminates tool dependency and ensures consistent stack compression force
- Digital timer with auto-reset functionality: programmable test duration from 1 second to 99 minutes 59 seconds, with ±0.1 s repeatability
- Balanced drive mechanism: precision-machined counterweights and low-vibration motor mount enable stable operation without anchoring or floor mounting
- Heavy-duty 1/3 HP induction motor: thermally protected, continuous-duty rated, housed in powder-coated steel enclosure
- Dual-voltage compatibility: factory-configured for 230 V / 50 Hz operation (SS-8RF variant); also available in 115 V / 60 Hz (SS-8R)
Sample Compatibility & Compliance
The SS-8RF is validated for use with standard 8-inch (203 mm) diameter test sieves conforming to ASTM E11 and ISO 3310-1 specifications—including brass, stainless steel, and electroformed mesh types. Recommended particle size range spans 25 mm (1 inch) down to 20 µm (No. 635), though actual resolution depends on material density, shape, moisture content, and cohesiveness. Optional accessories extend compatibility: an ISO adapter enables use of 200 mm ISO sieves; the SSA-805R acoustic enclosure reduces ambient noise to ≤72 dBA and contains fugitive dust per OSHA PEL guidelines. All configurations support GLP-compliant documentation when paired with Gilson’s optional data logging software and audit-trail-enabled controllers.
Software & Data Management
While the base SS-8RF operates via standalone digital controller, it integrates seamlessly with Gilson’s optional SieveLink™ PC software suite (sold separately). SieveLink supports automated test sequencing, real-time tap count and rotation monitoring, CSV export of time-stamped sieve residue weights, and compliance reporting aligned with FDA 21 CFR Part 11 requirements—including electronic signatures, user access controls, and immutable audit trails. Raw data files are timestamped and checksum-verified to ensure traceability from initiation to final report generation. The controller firmware supports firmware updates via USB interface and retains calibration history for internal metrology verification.
Applications
- Soil and aggregate gradation analysis per AASHTO T 27 / ASTM C136
- Pharmaceutical powder flowability and blend uniformity assessment (USP )
- Cement fineness testing per ASTM C204 and ISO 4032
- Recycled construction material classification (e.g., crushed concrete, asphalt millings)
- Mineral processing QC for ore concentrates and tailings
- Food ingredient particle sizing (flours, starches, dairy powders) under GMP-aligned protocols
FAQ
What sieve diameters does the SS-8RF support natively?
The SS-8RF is configured exclusively for 8-inch (203 mm) diameter sieves. An optional ISO adapter (sold separately) permits use of 200 mm ISO-standard sieves.
Is the tapping frequency adjustable?
No—the SS-8RF operates at a fixed, calibrated tapping rate of 48 taps per minute, optimized for ASTM and ISO conformance.
Can the SS-8RF be used with wet sieving protocols?
No—it is engineered for dry sieving only. For wet applications, Gilson recommends the SS-12RW series with integrated spray manifold and drain pan.
Does the unit include sieves or collection pans?
No—sieves, pans, and accessories (e.g., EZ-Clamp upgrade kit, SSA-805R acoustic hood) are sold separately to accommodate lab-specific mesh and material requirements.
What maintenance is required for long-term reliability?
Routine inspection of clamp rod threads, motor ventilation grilles, and tap arm bushings every 500 operating hours; lubrication is not required due to sealed bearing design.
