Impulse Hammer

GK-4110G20

An impulse hammer is a vibration hammer that incorporates force sensors for measuring the natural frequency of structures and performing modal analysis.

In addition to the general-purpose GK-3100, the GK-2110 is an ultra-compact type weighing 4.8 g, suitable for use as a vibrator for small and lightweight parts, while the GK-4110G20 is a large type weighing 1.1 kg, suitable for use as a vibrator for automobile white bodies and large structures, allowing you to choose the right one for your application.

By attaching Accelerometer to the object to be measured and striking it with an impulse hammer, it becomes possible to measure the frequency response function (natural frequency measurement) using an FFT analyzer based on two signals: the excitation force signal from the impulse hammer and the response acceleration signal from Accelerometer.
Furthermore, by loading the obtained frequency response function into modal analysis software (such as MEscope), it is possible to perform modal analysis on the object.

Inquiry

With a lightweight hammer mass of 4.8g (with plastic handle), it is possible to perform vibration analysis and countermeasures for small cases such as HDDs and thin-diameter pipes such as compressors.
Vibration is possible up to approximately 20 kHz.

It comes with two types of handles: a plastic handle for vibrating very light objects and an aluminum handle for generating greater vibration force. You can choose the one that best suits your needs.

The hammer mass is 160g as standard, and can be increased to 235g by attaching the included extender, making it possible to obtain a wide range of excitation forces with this single device.
A dedicated sensor amplifier is included.
Four types of impact tips are included as standard. The vibration frequency can be changed to suit the application.

With a hammer mass of 1.1 kg, it is possible to perform vibration analysis of machine frames that affect machining accuracy, and excitation for modal analysis of automobile white bodies.
With a built-in constant current drive (CCLD) preamplifier, direct connection to the analyzer is possible.
Four types of impact tips are included as standard. The vibration frequency can be changed to suit the application.

	GK-2110	GK-3100	GK-4110G20
Measurement range	220 N	2,200 N	22,000 N
Detection element	Crystal piezoelectric element	Crystal piezoelectric element	Crystal piezoelectric element
Sensitivity	22.5 mV/N ±20%	2.25 mV/N ±15%	0.23 mV/N ±15%
Resonant frequency	100 kHz or higher	22 kHz or higher	12 kHz or higher
Vibration frequency range (When using a hard chip)	Up to 20 kHz	Up to 8 kHz	Up to 1 kHz
Hammer mass	Approx. 4.8 g ^*2	Approximately 160g	Approximately 1,100g
Head diameter	6.3 mm	15.7 mm	51 mm
Tip diameter	2.5 mm	6.3 mm	51 mm
Hammer length	107 mm^*2	216 mm	370 mm
Output connector	Aluminum handle (5-44 coaxial) Plastic handle (10-32 miniature connector, direct cable outlet)	BNC（CO2）	BNC（CO2）
Output signal	Constant current drive (CCLD) compatible voltage output	Constant current drive (CCLD) compatible voltage output	Constant current drive (CCLD) compatible voltage output Supports IEEE 1451.4:2004 (TEDS) (Ver. 1.0 and later)
Output Impedance	100 Ω or less	Less than 100 Ω	100 Ω or less
Power supply	2 to 20 mA, DC 20 to 30 V	2 to 20 mA, DC 20 to 30 V	2 to 20 mA, DC 20 to 30 V
Sensor amplifier	Sold separately: SR-2210	Included: Power supply unit (Sensor amplifier) Sold separately: SR-2210	Sold separately: SR-2210
Cable	Included: GK-0132 (3 m, for aluminum handle)	Included: Signal cable (3 m) Sold separately: GK-0122 (3 m)	Sold separately: MX-100 series
Accessories	Storage case Extendermas ^*1 Wax Three red vinyl caps 5-44 ←→ 10-32 Cable (3 m) Handle (Aluminum, plastic, 2 pieces) Instruction Manual Shipping Characteristics Table	Storage case Extender Power supply unit (sensor amplifier) Hammer cable (BNC 3 m) Signal output cable (BNC 0.9 m) Impact tip set (Two super soft, two soft, one medium, one hard) Two mounting studs Two vinyl covers Instruction Manual Shipping Characteristics Table	Storage case Impact Tip (Super soft, soft, medium, hard) Instruction Manual Shipping Characteristics Table
price

*An NP-0021 conversion connector is required to connect the GK-2110 to a BNC connector.
*The GK-4110G20 does not include a signal cable.
*The GK-2110 and GK-4110G20 do not come with a sensor amplifier. The following amplifiers can be used.
SR-2210 2ch Sensor Amplifier
*1: When using an aluminum handle, be sure to attach the extender damas.
*2: When using a plastic handle