Digital Orbital Shaker

What is the Digital Orbital Shaker?

A digital orbital shaker uses a microprocessor controller to set and hold rpm and time precisely. It is chosen when reproducible speed and timed runs are needed to obtain consistent results between operators.

Overview

The digital orbital shaker replaces analog knobs with a microprocessor controller, so speed is set to 1 rpm and held by closed-loop control, and time is set in minutes or hours. The display shows rpm and remaining time, and in some models an accumulated run time for maintenance. Soft start, speed ramping and alarms for overload or deviation are common. Platforms of 300 to 500 mm carry 5 to 15 kg at 20 to 300 rpm with 10 to 25 mm orbits. Some models store several programs with different speed and time steps, useful for automated protocols. It suits laboratories that need consistent, repeatable mixing and a record of settings, from routine assays to methods transferred between sites.

How does it work?

An orbital shaker turns an eccentric bearing with a motor, converting rotation into a circular motion of the platform. The offset between the motor axis and the platform center sets the orbit diameter, usually 10 to 50 mm, and the speed is set by the controller. A brushless motor drives through a belt or directly, and sealed bearings support the load so the unit can run for long periods. Closed-loop speed control measures rpm with a tachometer or Hall sensor and corrects against load changes. Platforms bolt to the drive and accept flask clamps, tube racks, trays or bottle holders. A timer or programmable controller runs the cycle, and some models add a soft start, which brings the platform up to speed gradually to avoid spilling liquid from flasks.

What are the key features?

• Microprocessor control with 1 rpm resolution
• Closed-loop speed and time setting
• Soft start and speed ramping
• Program storage for multi-step protocols
• Overload and deviation alarms
• Digital display of rpm and time

What are the technical specifications?

A typical digital orbital shaker configuration offers platform size of 300×300 to 500×500 mm, speed range of 20–300 rpm, orbit diameter of 10–25 mm, load rating of 5–15 kg, speed resolution of 1 rpm and speed accuracy of ±1 rpm. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Digital Orbital Shaker is used in repeatable assay mixing, method transfer between laboratories, timed extraction and staining and automated multi-step protocols. Across the wider Orbital Shakers class, laboratories also deploy it for bacterial and yeast culture, liquid-liquid extraction and staining and destaining of gels.

Which standards and certifications apply?

Relevant standards and methods include IEC 61010-1, IEC 61010-2-051 and ISO 9001. Certification candidates for this model are CE, ISO 9001 manufacturing and RoHS; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Balance the platform by loading symmetrically, since an uneven load causes vibration, noise and rapid bearing wear, and can move the unit across the bench. Stay within the load rating at the chosen speed and start with a soft or low-speed ramp when flasks are filled. Site the shaker on a level, stable surface with clearance for ventilation and moving parts, and never operate it with the platform unsecured. Clean spills promptly, because media and reagents corrode clamps and platforms. Inspect belts, bearings and clamps on schedule, and check feet and fasteners for loosening that would worsen vibration.

How do I select the right Digital Orbital Shaker?

Select the digital shaker when reproducible speed and timed runs drive the result, or when methods must be transferred. Analog models are cheaper for rough mixing. In the RFQ, specify platform size, speed range and resolution, programs, alarms and load rating.

How does it compare with other Orbital Shakers variants?

Choose an orbital shaker for smooth, gentle mixing that suits culture and extraction, and pick the orbit diameter for the application: 10 to 19 mm for gentle work, 19 to 25 mm for most culture and mixing, and 25 to 50 mm for large volumes needing strong agitation. Match the load rating to the heaviest flask set at the working speed, since ratings fall as speed rises. Decide the platform size and clamp types, then the drive and control features, such as closed-loop speed, soft start, timer and duty cycle. For continuous operation, specify a unit rated for it. Confirm power, footprint and whether stacking or a larger platform is needed.