Model HT-91000

Microplate Orbital Shaker   

For Biotechnology, Genomics and Proteomics Processing
Our HT-91000 Microplate Orbital Shaker is designed to provide an orbital shaking motion for a single microplate, keeping liquids either gently stirred or fully mixed and in-suspension. Two-speed potentiometer settings, simple switch or relay activation. Ideal for low cost shaking on bio-robot deckplates. Ultra thin profile and same footprint dimensions as a standard wellplate.


  • Rotationally shakes a single microplate.
  • 0.5, 1 or 2 mm orbital motion.
  • 2 selectable & adjustable speeds, 60 to 3600 RPM.
  • Low stirring speed to ultra vigorous mixing speeds for viscous liquids.
  • 24 VDC low power for safe and easy integration with other automation.
  • Green LED power indicator, two blue LEDs for speed selection indication.
  • Cold running motor allows continuous operation, weeks at a time.
  • Small number of precision components for extreme reliability over years of use.
  • Spring clips secure microplate; easy on and off for robots or lab staff.
  • Base is exact same size as SBS microplate & fits directly onto robotic decks.
  • Use the microplate's own cover to protect contents.


This precision electronic shaker provides a tight 1 mm orbital pattern for standard 96 and 384 well plates and does not spill liquids at high speeds. It is designed with two continuously variable speeds in the range of 60 to 3600 RPM, providing a gentle stirring motion for skin prevention, medium speeds to ensure liquids remain fully mixed and in suspension across all wells, and vortex mixing for microtubes or beads and sediment re-suspension.

The footprint of the unique HT-91000 Orbital Shaker is the same size as a standard wellplate, and drops in easily as a replacement platform for most robotic deck plates.


Its solid aluminum construction does not allow walking or bouncing, and the nickel plating ensures easy wipe down. It has an operating temperature range of 0 to 160 degrees F, and it has negligible temperature rise itself, allowing operation continuously in cold rooms without affecting plate contents, and directly inside incubators.

Designed originally to enhance existing automation and robotics for genome sequencing and archiving applications, its tiny size, standardized SBS microplate footprint and in-well mixing ability make it ideal for many biotechnology and pharmaceutical applications, including manually loaded microplate handling.

Orbital Motion 1.0 mm diameter, circular shape, constant everywhere on well plate. 0.5 and 2.0 mm optional.
Speed 60 RPM to 3600 RPM, 2 separately adjustable miniature potentiometers for two independent speeds. Speed selectable by user external switches, relay contacts or solid state switches. 7500 RPM top speed optional.
Power Required 24 VDC, 200 mA. 100-240VAC 50-60Hz power adapter included.
Connection for Power Internal terminal block or supplied power adapter.
Base Dimension 3.350" (85mm) width, 5.030" (127.8mm) length
Indicators Green LED for power indicator, two blue LEDs indicating Speed A and Speed B activation.
Microplate Platform Dimension 3.650" (92.7mm) width, 5.300" (134.6mm) length, centered on top of base. Secures a single 96 or 384 micro well plate with SBS footprint.
Height 1.215" (30.9mm) height from bottom of rubber feet to top surface of shaker table platform. 1.775" (45.1mm) height from bottom of rubber feet to the top surface of a standard well plate. 0.995" (25.3mm) from bottom of rubber feet to bottom of shaker platform.
Weight 1.424 pounds (645.9 g)
Operating Temperature 0 F to 160 F  (-17.5 C to 71.0 C),  non-condensing, RH to 90%
Start-up Time 1.5 seconds to set speed
Motor Hi-torque 3-phase brushless DC servo motor and drive electronics with eccentric in precision bearing. Four post vibration isolators. Planar surface motion.
Mixing Speed Speed varies based on your liquid viscosity. For 96 well plates water fully mixes in each microplate well at 1300 RPM, 2000 RPM for 384 well plates.
Material Aluminum, nickel plated, stainless steel hardware, white polypropylene clips. Hi-phosphor nickel plate available.
Homing No (see Models HT-91100 or HT-91108 for homing ability)
Warranty Two year limited replacement warranty.
Certifications CE certified for laboratory equipment, RoHS compliant.
EAN Codes EAN 0700371289461: HT-91000-0.5
EAN 0700371289478: HT-91000-1
EAN 0700371289485: HT-91000-2

CAD Views of HT-91000

CAD Bottom View


CAD Top View

Ordering Information

Standard Model:

Part Number: Model HT-91000-1, Microplate Orbital Shaker, 1 mm orbital motion. USD $865 Quantity 1

Optional Models (no price difference):

Part Number: Model HT-91000-0.5, 0.5 mm orbital motion
Part Number: Model HT-91000-2, 2 mm orbital motion



Accessory Modifications per Model:

Containment Clip Material option: Standard polypropylene clip replaced with Delrin, polyethylene or nylon.

Containment Clip For Lid option: Higher clip design accommodates wellplate lid along with well plate. Let us know the model and brand of wellplate.

Increased Weight option: Handle loads up to 3 lbs. (1.4 kg).

Custom Shaker Platform: Tell us what bio-robot gripper design you are using and we will reconfigure the shaker platform to accommodate that gripper.

7200 RPM High Speed option, doubles shaker speeds.


Certified for Laboratory Equipment

Our shakers are RoHS compliant


View of containment clips

End view of power connector, indicators and potentiometer adjustments

Showing inside customer connection area

Shaker with high wellplate

What's In The Box

Box size: 9.5" x 8.0" x 3.25" (241mm x 203mm x 82.5mm).
Box weight: 2.40 lbs. (1.089kg).
One each Model HT-91000 Orbital Shaker
One each 100-240 VAC 50/60Hz power adapter, 24 VDC 1.5 A output, CE approval, US plug 6 foot cord
One each FlashDrive with all product line manuals



Get a HT-91000 brochure in pdf format.
HT-91000 Operations Manual in pdf format.
3D CAD in IGES format.
3D CAD in STEP format.
3D CAD in SolidWorks2018 format.

For Orbital Shaker inquiries, sales, support or service send email to: or go to our inquiry form

Big Bear Automation

Phone: 510.333.4338
EFax: 925.397.3148

2019 Big Bear Automation