Gilson SS-12R Tapping Sieve Shaker

Overview

The Gilson SS-12R Tapping Sieve Shaker is a precision-engineered laboratory instrument designed for standardized particle size distribution analysis via mechanical dry sieving. It operates on the principle of controlled vertical tapping combined with horizontal rotational motion—termed “circular oscillation”—to ensure uniform particle reorientation and efficient stratification across stacked sieve meshes. Unlike linear reciprocating shakers that generate dead zones and incomplete separation, the SS-12R’s patented 360° orbital rotation (not back-and-forth motion) promotes continuous particle tumbling in all directions, while its calibrated 48 taps per minute (tpm) impart consistent kinetic energy to dislodge near-size particles from apertures. This dual-mode action—rotational agitation plus vertical tapping—enhances sieving efficiency, reproducibility, and compliance with ASTM E11, ISO 3310-1, and USP <786> standards for sieve analysis.

Key Features

• Robust 1/3 HP heavy-duty induction motor delivering stable torque across voltage configurations (115 V / 60 Hz or 230 V / 50 Hz)
• Integrated EZ-Clamp system: single-action knob actuates a sliding clamping rod with positive-lock engagement—enabling rapid, tool-free stack assembly and secure retention during high-intensity operation
• Balanced internal counterweight mechanism eliminates vibration transmission, permitting benchtop use without anchoring or isolation mounts
• Precision digital timer with programmable duration up to 99 minutes and 59 seconds; auto-reset function ensures repeatable test cycles with ±0.5 second timing accuracy
• Universal sieve compatibility: accepts 8 in (203 mm) and 12 in (305 mm) diameter sieves—including ASTM-standard, ISO 3310-1 compliant 200 mm and 300 mm frames—via included adapter kit
• Structural housing fabricated from powder-coated steel for corrosion resistance and long-term dimensional stability under laboratory conditions

Sample Compatibility & Compliance

The SS-12R accommodates up to thirteen 8 in semi-height sieves, ten intermediate-height, or six full-height 12 in sieves—optionally paired with a receiver pan or nested fraction collectors. Its effective screening area exceeds that of 8 in models by more than eightfold, supporting broader mass throughput and finer resolution in coarse-to-fine gradation studies. Recommended particle size range spans 2 in (50 mm) down to No. 635 (20 µm), though optimal performance depends on material density, shape, moisture content, and cohesiveness. The system meets GLP documentation requirements when used with audit-trail-enabled controllers (e.g., optional Gilson DataLink software) and supports FDA 21 CFR Part 11–compliant electronic records when integrated into validated workflows.

Software & Data Management

While the SS-12R features an embedded microprocessor-based controller with non-volatile memory for time presets, it is fully compatible with Gilson’s DataLink™ PC interface software (sold separately). This application enables remote start/stop commands, real-time logging of tap count and elapsed time, export of timestamped CSV reports, and synchronization with LIMS platforms. All operational parameters—including voltage mode, programmed duration, and cycle completion status—are stored with firmware-level timestamps, satisfying traceability demands under ISO/IEC 17025-accredited testing laboratories.

Applications

• Geotechnical soil gradation analysis per ASTM D6913 and AASHTO T 27
• Pharmaceutical granule sizing and blend uniformity assessment per USP <786>
• Cement, aggregate, and mineral powder classification per EN 933-1 and ISO 2591-1
• Quality control of catalysts, abrasives, and ceramic powders in R&D and production environments
• Research-grade particle morphology correlation studies requiring high inter-laboratory repeatability

FAQ

What sieve diameters does the SS-12R support natively?

The SS-12R is configured for 12 in (305 mm) sieves but includes an adapter to accept 8 in (203 mm) and ISO 200 mm frames without modification.
Is the tapping frequency adjustable?

No—the SS-12R operates at a fixed, factory-calibrated 48 taps per minute to maintain compliance with ASTM E11 Annex A1 and ISO 3310-1 Clause 6.2.
Can the SS-12R be integrated into automated QA/QC workflows?

Yes—via RS-232 or USB-to-serial interface using Gilson DataLink™, enabling scheduled runs, data archiving, and electronic signature capture within validated systems.
Does the unit require external leveling or floor mounting?

No—its dynamically balanced drive system and low center-of-gravity design allow stable operation on standard lab benches without anchoring.
Are replacement parts and calibration services available internationally?

Yes—Gilson maintains an authorized global service network offering certified recalibration, motor maintenance, and EZ-Clamp component replacement with documented traceability to NIST standards.