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Lab Companion

Open-Air Shakers

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Open-Air Shakers

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Powerful driving system with a durable body structure increases shaking capacity. Suitable for larger or heavier workloads requiring accurate and reproducible results.

Safety Features

  • Worry-free operation - Automatic shaking speed adjustment in case of excessive workload such as unbalanced load placement, unusual vibrations caused from unstable floor or external shock
  • Automatic run is available with non-volatile set point memory after power interruption, indicated in control display
  • Audible/Visible alarm activated by shaking speed deviation
  • Shaker protection system against over-current, stalled platform check (Stalled platform check is only for OS-4000)

Operational Features

  • Microprocessor PID control - Intelligent speed controller enables reproducible results
  • Shaking speed calibration enables matching the displayed rpm to the reference point
  • Various speed ranges up to max. 500 rpm
  • Timer range: 1 min. to 999 hr 59 min
  • Orbit diameter: 19.1mm (Standard) or 25.4mm for OS-4000 / 25.4mm for OS-7100 / 50.8mm for OS-7200
  • User friendly control panel
  • Lab Companion’s unique VFD-bright, clear, easy to read
  • Durable membrane touch switch and control knob
  • Speed is basically set and displayed in increments of 1 rpm. Also speed increment interval can be set among 1, 5, 10 rpm according to users preference
  • Built-in RS-232 port and USB port for external control and data collection

Constructional Features

  • Wide speed range even with heavy workload - Equipped with a maintenance-free BLDC motor to generate smooth, quiet, uniform, and yet powerful shaking motion (only for OS-4000)
  • Repetitive task can be easily performed as the platform stops where it starts. Stopping the shaking platform always at the same position is highly beneficial for automated dosing or sampling process
  • Pleasant test environment by the smooth acceleration and deceleration control. Smooth start and smooth stop function prevent chemical spills from flasks or test tubes.
  • Low-profile design minimizes vibration or sliding caused by the high speed shaking motion
  1186Q84 (OS-4000)1186Q85 (OS-7100)1186Q86 (OS-7200)
Control systemPID feedback control
Motion typeOrbital
 Amplitude Size 
(mm / inch, dia.)
19.1 / 0.75 (Standard)25.4 / 1 (Adjustable)25.4 / 150.8 / 2
 Speed Range (RPM)10 to 50010 to 45030 to 50030 to 300
 Accuracy±1% of set speed (>100rpm) / ±1 (<100rpm)
 Timer1 min. to 999 hr 59 min.
Max Load (kg / lbs)14 / 30.9 
at 500 rpm
21 / 46.3 
at 400 rpm
10 / 22.0 
at 450 rpm
21 / 46.3 
at 300 rpm
10 / 22.0 
at 500 rpm
25 / 55.1 
at 400 rpm
23 / 50.7 
at 300 rpm
35 / 77.2 
at 200 rpm
DimensionsPlatform (WxD) (mm / inch)5450x450 / 17.7x17.7755x520 / 29.6x20.5
Overall (WxDxH) 
(mm / inch)
510x632x156 / 20.1x24.9x6.1755x627x151 / 29.7x24.7x5.9
Net weight (kg / lbs)43 / 94.8117 / 257.9

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Thomas No.
Mfr. No.
OS-4000 Shaker, Orbital, 0.75", 120V 50/60Hz
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Thomas No.
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OS-7100 Shaker, Orbital, 1.0", 120V 50/60Hz
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Thomas No.
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OS-7200 Shaker, Orbital, 2.0", 120V 50/60Hz
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