Gilson SS30S Ro-Tap® Sieve Shaker (230V / 60Hz)

Overview

The Gilson SS30S Ro-Tap® Sieve Shaker is a precision-engineered mechanical sieve shaker designed to perform standardized particle size distribution analysis in accordance with ASTM E11, ISO 565, ISO 3310-1, and USP <786>. It replicates the classic Ro-Tap® motion profile—combining horizontal circular oscillation (278 cycles/min) with vertical tapping (150 taps/min)—to ensure uniform particle stratification and efficient separation across stacked test sieves. This dual-motion mechanism minimizes particle agglomeration and screen blinding while maximizing reproducibility in dry-sieving applications. Built for high-throughput laboratory and quality control environments, the SS30S features a robust 1/4 HP induction motor, rigid steel frame construction, and optional bench-mounting capability for vibration isolation. Its 230V / 60Hz electrical configuration complies with international power standards commonly used in North America, Latin America, and parts of Asia-Pacific where 230V 60Hz infrastructure is deployed.

Key Features

• Ro-Tap® patented dual-motion drive: 278 oscillations/min + 150 vertical taps/min, fully compliant with ASTM E11 and ISO 565 timing requirements
• Digital timer with 0.1-second resolution and programmable duration up to 99 minutes for precise test repeatability
• Quick-adjust sieve support plate accommodates full-height (203 mm), half-height, or intermediate-height 8-inch (203 mm) test sieves
• Supports up to six full-height 8-inch (203 mm) sieves—or thirteen half-height sieves—in a single stack configuration
• Compatible with both ASTM-standard Tyler® mesh sieves and ISO 565-compliant 200 mm round sieves
• Integrated vibration-dampening base design; optional sound enclosure (W.S. Tyler SoundShell®) available for noise reduction in shared lab spaces
• UL-listed electrical system with thermal overload protection and grounded metal housing for operator safety

Sample Compatibility & Compliance

The SS30S is validated for use with free-flowing, non-cohesive dry powders and granular materials ranging from coarse aggregates (No. 4, 4.75 mm) to fine powders (No. 635, 20 µm). It is routinely employed in cement, pharmaceutical excipient, mineral processing, food ingredient, and ceramic raw material testing workflows. All operational parameters—including tap frequency, oscillation amplitude, and dwell time—are traceable and repeatable under GLP-compliant documentation protocols. The unit supports audit-ready operation when paired with electronic data capture systems compliant with FDA 21 CFR Part 11 requirements (e.g., timestamped timer logs, user-access controls).

Software & Data Management

While the SS30S operates as a standalone electromechanical instrument without embedded firmware or network connectivity, its digital timer output can be integrated into external LIMS or ELN platforms via analog signal logging or manual entry. For laboratories requiring full electronic record integrity, Gilson recommends pairing the shaker with validated timer interface modules that generate CSV-exportable test logs—including start/stop timestamps, operator ID, sieve stack configuration, and run duration—supporting 21 CFR Part 11 audit trails when deployed within GxP-regulated environments.

Applications

• Quality assurance of bulk pharmaceutical powders per USP <786> and Ph. Eur. 2.9.30
• Aggregate gradation analysis in asphalt and concrete production (ASTM C136)
• Particle size verification of catalysts, pigments, and battery electrode materials
• Routine QC screening of food-grade starches, flour, and powdered dairy products
• Research-scale optimization of milling and micronization processes
• Calibration and validation of laser diffraction or dynamic image analysis instruments using reference sieve fractions

FAQ

What voltage and frequency configurations does the SS30S support?
The SS30S is specifically rated for 230V AC at 60Hz operation, with a nominal current draw of 2.2A.
Can the SS30S accommodate ISO-standard 200 mm sieves?
Yes—it accepts all standard 200 mm diameter round test sieves conforming to ISO 565 and ISO 3310-1 specifications.
Is the SS30S compatible with automated sieve stack loading systems?
It is mechanically compatible with third-party sieve handling accessories, including Clean-N-STOR fraction collectors and multi-tier sieve alignment fixtures.
Does the SS30S require periodic calibration?
Per ASTM E11 Section 7.3, users must verify tap count and oscillation frequency annually using a calibrated tachometer or stroboscopic measurement device; no internal recalibration is required.
What is the recommended maintenance schedule?
Lubrication of the camshaft assembly every 500 operating hours and inspection of motor mounting bolts and sieve clamping mechanisms before each shift are advised per Gilson Technical Bulletin TB-SS-01.