W.S. Tyler SS30S Ro-Tap® Sieve Shaker

Overview

The W.S. Tyler SS30S Ro-Tap® Sieve Shaker is a precision-engineered mechanical sieving instrument designed to perform standardized particle size distribution analysis in accordance with ASTM E11, ASTM D6913, 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 energy input across the entire sieve stack. This dual-motion mechanism promotes efficient particle stratification and separation, minimizing blinding and nesting effects common in static or purely vibratory systems. The SS30S variant operates at 230 V / 60 Hz, making it suitable for laboratories in North America and other 60 Hz regions requiring compliance with international test protocols while maintaining electrical compatibility with local infrastructure. Its robust cast-iron base, reinforced steel housing, and vibration-dampening mounting system support stable operation under continuous duty cycles, even when fully loaded with up to six full-height 8-inch (203 mm) test sieves.

Key Features

• Ro-Tap® patented motion: 278 oscillations/min + 150 taps/min for reproducible, method-compliant sieving
• Digital timer with 0.1-second resolution and 99-minute maximum duration for precise test control
• Adjustable sieve support plate enabling rapid configuration for full-height, half-height, or intermediate-height sieve stacks
• 1/4 HP induction motor engineered for thermal stability and long-term reliability under high-cycle usage
• Mounting holes on base plate for secure bolting to laboratory benches or concrete foundations to suppress resonance
• Compatibility with both ASTM-standard 8-inch (203 mm) sieves and ISO 200 mm sieves without adapter modification
• Integrated safety interlock preventing operation when lid is open or improperly secured

Sample Compatibility & Compliance

The SS30S accommodates dry, free-flowing granular materials across a broad particle size range—from No. 4 (4.75 mm) down to No. 635 (20 µm)—making it ideal for applications in aggregates, pharmaceutical powders, catalysts, ceramics, and metal powders. Its mechanical design conforms to ASTM E11 requirements for sieve shaker performance validation, including amplitude consistency, tap force repeatability, and motion fidelity verification. All units are supplied with factory calibration documentation traceable to NIST standards. When operated within validated parameters and maintained per W.S. Tyler’s service schedule, the SS30S supports GLP and GMP environments where audit-ready documentation—including equipment qualification (IQ/OQ), preventive maintenance logs, and operator training records—is required.

Software & Data Management

While the SS30S is a stand-alone electromechanical device without embedded software, its deterministic timing and repeatable motion profile integrate seamlessly into regulated workflows. Users may pair the shaker with external digital logging systems (e.g., LabVantage, Empower, or custom SCADA interfaces) via analog output signals or serial communication modules (optional add-ons). For FDA 21 CFR Part 11 compliance, time-stamped test records—including start/stop timestamps, sieve stack configuration, and operator ID—can be generated using connected PCs running validated data acquisition software. W.S. Tyler provides electronic copies of all technical manuals, calibration certificates, and maintenance bulletins in PDF format, supporting document control systems compliant with ISO 9001 and ISO/IEC 17025.

Applications

• Quality control of raw materials and finished products in pharmaceutical manufacturing (e.g., API particle sizing per USP <786>)
• Aggregate gradation testing in civil engineering and asphalt production (ASTM C136, AASHTO T 27)
• Characterization of catalyst support particles and ceramic precursors in R&D labs
• Particle size verification for additive manufacturing feedstocks (e.g., Ti-6Al-4V, Inconel 718 powders)
• Environmental sediment analysis per EPA Method 1684 and ASTM D422
• Food ingredient screening for flour, sugar, and spice blends to ensure consistent flowability and dissolution

FAQ

What sieve diameters and configurations does the SS30S support?
The SS30S accepts only 8-inch (203 mm) diameter sieves in full-height, half-height, or intermediate-height formats. It holds up to six full-height sieves or thirteen half-height sieves per run.
Is the SS30S compatible with ISO 200 mm sieves?
Yes—its sieve frame geometry accommodates ISO 200 mm sieves without adapters, provided they conform to ISO 3310-1 dimensional tolerances.
Does the SS30S include a sound enclosure?
No—the SS30S is supplied as a standalone unit. Optional W.S. Tyler Sound Enclosures (Model SE-8) can be purchased separately for noise reduction in shared lab spaces.
Can the SS30S be used for wet sieving?
No—it is strictly designed for dry sieving applications. Wet sieving requires dedicated equipment with fluid handling, drainage, and corrosion-resistant components.
What maintenance is required to maintain ASTM compliance?
Monthly visual inspection of tap hammers, quarterly lubrication of camshaft bearings, and annual verification of oscillation/tap frequency using a certified tachometer and tap-force gauge per W.S. Tyler Service Bulletin SB-RT-002.