SKF TKST 21 250 mV electronic stethoscope

Supplier number: SKF TKST 21 | EAN 07316581782970

1,657.60 tax incl.

€1,369.92 excl. VAT (incl. all environmental contributions)

On order: delivered from 08/10/2026

Ordered before 20:00 - delivered as of 08/10/2026
Free shipping
Delivery by DHL

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Precise acoustic diagnostics with Skf

Practical benefits

Early detection of faults: You pinpoint bearing damage and machinery noise quickly by comparing live audio against pre-recorded reference sound samples.
Clear hearing protection headset: The noise-cancelling headset blocks loud ambient noise, enabling you to clearly focus on subtle machine vibrations.
Intuitive color screen navigation: You navigate settings effortlessly with the backlit color display and reach confined spots using the two included probes.

In a nutshell

The right choise for

With the Skf tkst 21, you detect early bearing damage and machinery irregularities before costly breakdowns occur. This advanced electronic stethoscope operates across a 30 Hz to 15 kHz frequency range to capture subtle acoustic signals. The included noise-cancelling headset blocks ambient plant noise, allowing you to clearly inspect motors, pumps, and gearboxes. Thanks to the backlit color display, five internal memory slots, and pre-recorded reference sounds, you diagnose mechanical faults with total confidence. Two interchangeable probes of 70 mm and 300 mm let you reach recessed components easily. Supplied with two aa batteries in a sturdy carrying case.

Product information FAQ

€1,657.60

tax incl.

Key features according to our expert

Scope of delivery

1x TKST 21 Handset
1x Headset
1x Probe 70mm
1x Probe 300mm
2x AA batteries
1x printed instructions for use
1x Carrying case (size B)

Product description

The advanced electronic stethoscope TKST 21 includes a headset and two probes and is supplied in a sturdy carrying case. The large color display guides the user easily through the menus. Sounds can be captured and saved on the instrument in order to analyse them. Pre-recorded audio samples of the most common problematic bearing noises are available in the device. The audio samples allow reliable identification of the possible cause of the noise. The handset has two outputs for the amplified signal (headset and recorder connection). The headset is an approved ear defender.

User friendly menu on a large, backlit colour display
Easy one-hand operation buttons
Lightweight and ergonomic designed instrument
Off-line and online pre-recorded demonstration samples
High quality, noise cancelling headset
Easily adjustable volume control and mute function
Supplied with two probes

All Features

Headset impedance: 32
Max recorder output: 250
Housing material: PC/ABS blend, overmoulded with TPU rubber
Probe lenghts: 70 mm;300 mm
Recommended storage temperature: -20-45
Case dimensions (l x h x w): 360 x 110 x 260 mm
Operating temperature range: 0-40
Total product weight: 1.65
Instrument weight: 300
Instrument dimensions: 230 × 70 × 38 mm
Headset weight: 290
Frequency: 30-15000
Degree of protection (ip): IP 40
Battery life: 5
Auto switch off: Yes, adjustable: off - 5 min - 10 min
Relative humidity: 10 to 90%, non-condensing
Color code: Blue; Dark Grey
Battery: 2x AA (Alkaline (incl.) or Rechargable)
Volume adjustment steps: 10

Brand SKF
03300662
EAN 07316581782970
Supplier number SKF TKST 21

Frequently asked questions about this product

Answered by specialists

What is the SKF TKST 21 used for?: It is designed to detect and analyse abnormal bearing and machinery noise in rotating equipment.
Which probes are included in the kit?: The kit includes two interchangeable probes: a short 70 mm probe and a long 300 mm probe.
What is the frequency range of this electronic stethoscope?: The instrument operates across a frequency range of 30 Hz to 15 kHz.
Can you save and compare audio recordings directly on the device?: Yes, it includes 5 internal memory slots and pre-recorded audio samples of common bearing defects.
What type of power supply does the SKF TKST 21 require?: The handset is powered by 2 AA alkaline batteries, which are supplied in the carrying case.