Bench Top (BT-Series) Air-Cooled Shakers

tabletop vibration testing

100 - 1000 N (70 - 224 lbf)

The BT Series shakers are designed for demanding vibration test applications. Typical applications included structural analysis, calibration and testing of smaller assemblies. The BT-100 through BT-400 shakers utilize light weight rare earth magnets in lieu of traditional Alnico magnets. The use of these magnets decreases the total shaker mass to a third of similar size system, making these shakers easy to handle and portable.

The line of Sentek Dynamics Bench Top shakers is based upon years of practical vibration test experience. These shakers all exhibit a high lateral stiffness, high force-to-weight ratio and are specifically designed to help ensure the best possible performance with minimum setup time.

Uses: vibration testing; mechanical impedance measurements; educational demonstrations; structural response testing; vibration transducer calibration; testing of small electronic assemblies and components.

Technical Specification of Bench Top Shaker Systems
BT-100 BT-200 BT-400 BT-1000
Metric US Metric US Metric US Metric US
Rated peak force Sine/
Random/Shock
100/70 N 22/15 lbf 200/140 N 44/31 lbf 400/311 N 99/70 lbf 1000/650/1500 N 224/146/337 lbf
Frequency range 2 - 7000 Hz 2 - 7000 Hz 2-7000 Hz 2-7000 Hz 2 - 6500 Hz 2 - 6500 Hz 2 - 6500 Hz 2 - 6500 Hz
Main resonance frequency >6500 Hz >6500 Hz >6500 Hz >6500 Hz >5500 Hz >5500 Hz >4800 Hz >4800 Hz
Max. displacement Peak-Peak 13 mm 0.51 13 mm 0.51 20 mm 0.787 25.4 mm 1 in
Max. velocity 1.5 m/s 59 in/s 1.5 m/s 59 in/s 1.5 m.s 59 in/s 1.5/1.5/2.0 m/s 59/59/78 in/s
Max. acceleration Sine/Random 45/30 g 45/30 g 89/62 g 89/62 g 100/50 g 100/50 g 60/35/90 g 60/35/90 g
Suspension stiffness 8 N/mm 45.7 lbf/in 8 N/mm 45.7 lbf/in 5 N/mm 28.6 lbf/in 22 N/mm 152.6 lbf/in
Effective moving mass 0.23 kg 0.507 lbs 0.23 kg 0.507 lbs 0.4 kg 0.88 lbs 1.75 kg 3.86 lbs
Total mass 12 kg 26.4 lbs 12 kg 26.4 lbs 18 kg 39.68 lbs 122 kg 268.9 lbs
Armature diameter 60 mm 2.36 in 60 mm 2.36 in 60 mm 2.36 120 mm 4.72 in
Blower No Yes Yes Yes
Amplifier LA-120 LA-500 LA-1000 LA-1000 w/FPS

The mini-shaker is a small, portable permanent magnet exciter with an integral power amplifier. The design eliminates the need for a separate, inconvenient power amplifier. The excitation signal can be connected directly to the BNC connector from most vibration controllers or signal generators. The mini-shaker is perfect for frequent conveyance, and educational and research purposes in both lab and industrial environments.

Uses: Vibration testing; Mechanical impedance measurements; Educational demonstrations; Structural response testing; Vibration transducer calibration

Technical Specifications of Mini-Shaker System
Metric US
Rated peak force Sine/Random/Shock 20/13.3/40 4.5/3/9
Frequency range 0.3Hz -15 kHz 0.3Hz -15 kHz
Main resonance frequency 17 kHz 17 kHz
Max. displacement Peak-Peak 5 mm 0.2 in
Max. velocity 1.0 m/s 39.4in/s
Max. acceleration
Bare Table 40g 40g
   45 grams (0.1 lb) 21 g 21 g
   450 grams (1 lb) 4 g 4 g
   900 grams (2 lbs) 2 g 2 g
Suspension stiffness 2.63 N/mm 15 lbf/in
Effective moving mass 50 grams 0.11 lb
Total mass 4.5 kg 9 lbs
Armature mounting pattern - M5 inserts Center and 4 @ 25mm
Amplifier Integral

Modal Bench Top (BT-M Series) Shakers

modal test shakers

The Modal Bench Top (BT) Series exciters are designed specifically for structural and modal analysis applications. The BT-100-M through BT-400-M shakers utilize light weight rare earth magnets in lieu of traditional Alnico magnets. The use of these magnets decreases the total shaker mass to a third of similar size system, making these shakers easy to handle and portable. The BT-100-M through BT-400-M are also available in a through hole version (MTH) with displacements up to 25.4mm or 1 inch.

The BT-1000-M is for structural and modal analysis applications of high-mass structures. The exciter provides 45 mm or 1.77 inches of displacement. This system includes electronic zero point control with electronically adjustable suspension stiffness (ZPR).

The line of Sentek Dynamics Bench Top modal exciters is based upon years of practical experience. These systems all exhibit a high lateral stiffness, high force-to-weight ratio and are specifically designed to help ensure the best possible performance with minimum setup time.

Uses: structural response testing; modal analysis

Technical Specifications of Bench Top Modal Shaker Systems
BT-100-M BT-200-M BT-400-M BT-1000-M
Metric US Metric US Metric US Metric US
Rated peak force Sinepk/RandomRMS 100/70 N 22/15 lbf 200/140 N 44/31 lbf 400/311 N 99/70 lbf 1000/650 N 224/146 lbf pk rms pk
Frequency range DC - 5000 Hz DC - 5000 Hz DC - 5000 Hz DC - 5000 Hz DC - 5000 Hz DC - 5000 Hz 1-5000 Hz 1-5000 Hz
Main resonance frequency >2680 Hz >2680 Hz >2680 Hz >2680 Hz >2450 Hz >2450 Hz >4000 Hz >4000 Hz
Max. displacement Peak-Peak 13 mm 0.51 13 mm 0.51 20 mm 0.787 45.0 mm 1.77 in
Max. velocity 1.5 m/s 59 in/s 1.5 m/s 59 in/s 1.5 m.s 59 in/s 1.5/1.5/2.0 m/s 59.05/59.05/78.7 in/s
Suspension stiffness 8 N/mm 45.7 lbf/in 8 N/mm 45.7 lbf/in 5 N/mm 28.6 lbf/in electronically adjustable
Effective moving mass 0.23 kg 0.507 lbs 0.23 kg 0.507 lbs 0.4 kg 0.88 lbs 1.45 kg 3.2 lbs
Total mass 12 kg 26.4 lbs 12 kg 26.4 lbs 18 kg 39.68 lbs 122 kg 268.9 lbs
Coupling thread M6 M6 M6 M8
Blower No Yes yes Yes
Amplifier LA-120 LA-500 LA-1000 LA-1000 w/FPS
Technical Specifications of Through Hole Modal Shaker Systems
BT-100-MTH BT-200-MTH BT-400-MTH
Metric US Metric US Metric US
Rated peak force Sinepk/RandomRMS 100/70 N 22/15 lbf 200/140 N 44/31 lbf 400/280 N 99/63lbf
Frequency range DC - 5000 Hz DC - 5000 Hz DC - 5000 Hz DC - 5000 Hz DC - 5000 Hz DC - 5000 Hz
Main resonance frequency >6000 Hz >6000 Hz >6000 Hz >6000 Hz 4000 Hz 4000 Hz
Max. displacement Peak-Peak 25.4 mm 1 in 25.4 mm 1 in 25.4 mm 1 in
Max. velocity 1.5 m/s 59 in/s 1.5 m/s 59 in/s 1.5 m.s 59 in/s
Suspension stiffness 4 N/mm 22.84 lbf/in 4 N/mm 22.84 4 N/mm 22.84 lbf/in
Effective moving mass 0.23 kg 0.507 lbs 0.23 kg 0.507 lbs 0.4 kg 0.88 lbs
Total mass 21 kg 46.3 lbs 21 kg 46.3 lbs 21 kg 46.3 lbs
Coupling thread M6 M6 M6
Blower No Yes yes
Amplifier LA-120 LA-500 LA-1000