ONO SOKKI - Impulse Hammer GK-4110G10 (Large size) and GK-2110 (Ultra compact size)

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Impulse Hammer GK-4110G10/GK-2110

Impulse Hammer
GK-4110G10 (Large size)
GK-2110 (Ultra compact size)

Outer Dimension (PDF)

Photo (Impulse Hammer GK-4110G10 and GK-2110)

An impulse hammer is an excitation hammer which is built in a sensor in order to support the measurement of the natural frequency response function of a mechanical structure or perform modal analysis.

The GK-2110 is an ultra compact size weighing 4.8 g for the excitation of small and light-weighted parts. For the excitation of large structures such as automobile’s framework structure, the large size type one the GK-4110G10 weighing 1.1 kg is suitable.

By mounting an accelerometer on the measurement object and hitting it with impulse hammer, the excitation force signals from the impulse hammer and the response acceleration signals from the accelerometer are input to an FFT analyzer to enable measurement of the frequency response function (natural frequency). Moreover, you can perform the modal analysis of the object by sending the obtained frequency response function data to a PC in which modal analysis software is installed.

Features

As a light-weighted of 4.8g, the GK-2110 enables excitation for the noise analysis from a small case of HDD or thin pipe in compressor etc. and its measures.
The GK-4110G10 impulse hammer weighing of 1.1 kg can perform vibration analysis of the trestle for machinery which has great effect on the accuracy of machine tool and modal analysis of automobile’s framework structure.
The GK-2110 and GK-4110G10 enable to connect directly to the analyzer owing to the built-in CCLD preamplifier. (GK-4110G10 is applicable to TEDS^*.)
You can choose a suitable impact tip according to the requirement of your test structure.

* TEDS…Transducer Electronic Data Sheet

Outline Specifications

	GK-4110G10	GK-2110
Frequency range (when hard tip in use)	Up to 1 kHz	Up to 20 kHz
Measurement range	22,000 N	220 N
Sensitivity	0.23 mV/N	22.5 mV/N
Resonance frequency	12 kHz or more	100 kHz or more
Hammer weight	1,100 g	4.8 g (when attached with a plastic hammer handle)
Hammer head diameter	51 mm	6.3 mm
Tip diameter	51 mm	2.5 mm
Hammer length	370 mm	107 mm
Output connector	BNC（CO2）	Aluminum hammer handle (5-44 coaxial connector) Plastic hammer handle (direct-connected cable, miniature 10-32 connector)
Output signal	Voltage output with CCLD compatible Applicable to TEDS (Ver. 1.0)	Voltage output with CCLD compatible
Output impedance	100 Ω or less	100 Ω or less
Constant Current Line Drive requirement	2 to 20 mA, +18 to +30 VDC	2 to 20 mA, +18 to +30 VDC
Standard accessories	Storage case Impact tips set (super soft, soft, medium soft) Data sheet Instruction manual	Storagecase Extender Impact tip (vinyl) 5-44=10-32 cable （3 m） Hammer handle (aluminum, plastic) Data sheet Instruction manual

Revised: 2009/11/30