Shanghai Shiping SPH-311D Floor-Standing Orbital Shaker

Overview

The Shanghai Shiping SPH-311D Floor-Standing Orbital Shaker is an industrial-grade, ambient-temperature orbital agitation platform engineered for high-reproducibility, long-duration cell culture, microbial fermentation, biochemical assay preparation, and molecular hybridization protocols. It operates on the principle of controlled horizontal circular motion—generating uniform orbital displacement (50 mm diameter) across the entire platform surface—to ensure consistent oxygen transfer, suspension homogeneity, and minimal shear stress on sensitive biological samples. Unlike incubated shakers, the SPH-311D is optimized for applications where precise temperature control is managed externally (e.g., within climate-controlled rooms or secondary incubation enclosures), allowing users to decouple agitation dynamics from thermal regulation for greater experimental flexibility and energy efficiency.

Key Features

• Parallelogram Dynamic Balance Drive: A single-axis mechanical architecture employing a precision-engineered four-bar linkage mechanism eliminates torsional vibration and mechanical backlash. This design ensures near-zero friction operation (<45 dB(A) acoustic emission), exceptional speed stability (±1 rpm accuracy), and extended service life under continuous 24/7 duty cycles.
• Ductile Iron Core Construction: Critical load-bearing components—including the main drive housing, crank arm assembly, and platform support base—are machined from ASTM A536 Grade 65-45-12 ductile cast iron. This material selection delivers superior damping capacity, dimensional stability, and fatigue resistance compared to aluminum or welded steel alternatives.
• NSK Double-Row Angular Contact Bearings: Factory-installed, pre-lubricated NSK bearings (model series 32000) are rated for ≥100,000 hours of continuous operation at rated load. Their axial/radial load-sharing geometry maintains rotational integrity even under asymmetric flask loading conditions.
• PID-Controlled Microprocessor Interface: An embedded 32-bit ARM-based controller executes real-time environmental scanning and closed-loop speed regulation. The LCD interface supports intuitive parameter navigation without training—users adjust setpoints via rotary encoder and confirm changes with tactile feedback.
• Triple-Layer Safety Architecture: Hardware-level protections include independent over-speed detection (with audible buzzer and red LED flash), ground-fault circuit interruption (GFCI), thermal cut-off on motor windings, and mechanical end-stop limit switches. All safety circuits operate in parallel—not cascaded—to guarantee fail-safe shutdown.

Sample Compatibility & Compliance

The SPH-311D accommodates standard laboratory vessels ranging from 250 mL Erlenmeyer flasks (up to 54 units) to 5 L baffled bottles (up to 6 units) on its 840 × 620 mm stainless-steel-reinforced platform. Flask clamping is achieved via universal rubber-coated retainer bars (included), compatible with glass, PETG, and polycarbonate containers. The unit complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets CISPR 11 Group 1 Class B limits for radiated/conducted emissions. While not intrinsically certified for hazardous locations, it is routinely deployed in ISO 14644-1 Class 7 cleanrooms when installed with HEPA-filtered air supply and anti-static flooring.

Software & Data Management

The SPH-311D operates as a standalone instrument but supports external data logging via RS-485 Modbus RTU protocol (optional adapter required). When integrated with laboratory information management systems (LIMS) or electronic lab notebooks (ELN), it enables timestamped event capture—including start/stop commands, speed changes, timer expiration, and fault triggers—for 21 CFR Part 11–compliant audit trails. Optional firmware upgrade adds USB host capability for configuration backup/restore and CSV-formatted runtime logs (speed, time, status) stored on FAT32-formatted USB drives.

Applications

This shaker serves critical roles in upstream bioprocessing (E. coli and yeast culture expansion), diagnostic reagent manufacturing (antibody conjugation mixing), environmental microbiology (BOD bottle agitation), food safety testing (pathogen enrichment), and academic research (transfection complex formation, chromatin immunoprecipitation wash steps). Its robust torque delivery (≥1.2 N·m at 300 rpm) and low-speed precision (30 rpm with <0.5% speed deviation) make it equally suitable for gentle tissue dissociation protocols and high-viscosity media mixing.

FAQ

Is the SPH-311D suitable for use inside a CO₂ incubator?
No—this model lacks temperature and humidity control; it is designed exclusively for ambient-room operation. For incubated shaking, consider thermostatic variants with IP54-rated enclosures and condensation-resistant electronics.
Can the platform accept custom fixtures for microplate carriers?
Yes—the 840 × 620 mm surface features a 12.7-mm grid of threaded M6 holes (center-to-center spacing), enabling secure mounting of third-party plate holders, tube racks, or bioreactor sleeves using standard hardware.
What maintenance schedule is recommended for the NSK bearings?
These are sealed-for-life units requiring no lubrication or periodic replacement under normal operating conditions. Visual inspection every 12 months for abnormal noise or vibration is advised.
Does the timer support power-failure recovery?
Yes—the internal non-volatile memory retains all active parameters and resumes timing upon AC restoration, provided the main power switch remains ON.
Is calibration documentation provided with shipment?
A factory-issued speed verification report (traceable to NIST-calibrated tachometer) is included. Full ISO/IEC 17025 calibration services are available through authorized regional partners upon request.