W.S. Tyler SS-30 Ro-Tap® Sieve Shaker

Overview

The W.S. Tyler SS-30 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 particle stratification and optimal separation efficiency across stacked sieve assemblies. This dual-motion mechanism minimizes particle agglomeration and screen blinding while maximizing throughput consistency, making the SS-30 particularly suitable for routine QC testing in geotechnical labs, aggregate processing facilities, pharmaceutical manufacturing, and ceramic raw material quality control. Its robust cast-iron frame, integrated leveling feet, and optional bench-mounting capability provide mechanical stability during extended operation, supporting high-reproducibility data generation under GLP-compliant workflows.

Key Features

• Standardized Ro-Tap® motion: 278 oscillations/min + 150 taps/min per ASTM E11 requirements
• Dual-voltage compatibility: Configurable for 115 V / 60 Hz, 230 V / 50 Hz, or 230 V / 60 Hz operation (model variants SS-30, SS-30F, SS-30S)
• High-torque 1/4 HP induction motor delivering consistent amplitude and frequency over time
• Programmable digital timer with 0.1-second resolution and up to 99-minute duration
• Quick-adjust sieve support plate accommodating full-height (203 mm), half-height, or ISO 200 mm sieve stacks
• Capacity: Up to six full-height 8-inch (203 mm) test sieves with full-depth receiver pan, or thirteen half-height sieves with half-depth pan
• Optional accessories include sound-dampening enclosures (W.S. Tyler SoundShell®), Clean-N-STOR fraction collectors, and ASTM/ISO-certified test sieves

Sample Compatibility & Compliance

The SS-30 supports dry-sieving applications for granular solids ranging from coarse aggregates (No. 4, 4.75 mm) down to fine powders (No. 635, 20 µm). It accommodates standard W.S. Tyler® test sieves in 8-inch (203 mm) diameter with brass, stainless steel, or nylon mesh options—including ASTM E11-compliant wire cloth and ISO 3310-1 certified woven metal meshes. All operational parameters—including tap force, oscillation radius, and timing accuracy—are traceable to NIST-calibrated reference instruments. The shaker meets electrical safety standards IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emissions), and its mechanical design conforms to ISO 25316 for laboratory vibration equipment. When used with validated sieve sets and documented SOPs, the system supports FDA 21 CFR Part 11–aligned audit trails when paired with compliant LIMS or ELN platforms.

Software & Data Management

While the SS-30 operates as a standalone electromechanical unit without embedded firmware or network connectivity, its deterministic motion profile and precise timer enable seamless integration into regulated environments. Users may log run parameters—including voltage, duration, sieve stack configuration, and operator ID—manually or via external electronic lab notebooks (ELNs). For automated data capture, third-party PLC interfaces or USB-connected data loggers can record motor current draw and timer status signals, facilitating trend analysis of mechanical performance over time. Calibration records, preventive maintenance logs, and sieve certification documentation are maintained externally in accordance with ISO/IEC 17025 and ASTM D6913 Annex A1 requirements.

Applications

• Soil and sediment gradation analysis per ASTM D6913 and AASHTO T 27
• Pharmaceutical powder characterization for content uniformity and dissolution testing (USP <786>)
• Quality assurance of catalysts, pigments, and battery electrode materials
• Aggregate classification in concrete and asphalt production (ASTM C136)
• Recycled construction material screening per EN 12620
• Food ingredient particle sizing for flowability and mixing homogeneity assessment

FAQ

What sieve diameters and configurations does the SS-30 support?
The SS-30 is optimized for 8-inch (203 mm) test sieves, accepting up to six full-height sieves with a full-depth receiver pan or thirteen half-height sieves with a half-depth pan. ISO 200 mm sieves are also compatible with minor adapter adjustments.

Is the SS-30 compliant with ASTM E11 and ISO 3310-1?
Yes—the SS-30 reproduces the exact motion parameters specified in ASTM E11 Section 7.2 and ISO 3310-1 Clause 6.2 for Ro-Tap®-type shakers, including oscillation frequency, tap count, and amplitude tolerances.

Can the SS-30 be mounted to a laboratory bench?
Yes—four pre-drilled mounting holes are provided on the base plate, enabling secure bolt-down installation to minimize vibration transmission in shared lab environments.

What maintenance is required for long-term reliability?
Routine inspection of motor brushes (if applicable), periodic lubrication of camshaft bearings, and verification of timer calibration every 6 months are recommended. Full service intervals are defined in the W.S. Tyler Preventive Maintenance Manual P/N 100-0027.

Does the SS-30 include test sieves or receiver pans?
No—sieves, pans, and accessories are ordered separately based on application-specific mesh specifications and material compatibility requirements. W.S. Tyler offers fully certified ASTM and ISO sieve sets with NIST-traceable calibration certificates.