Compact Bearing Diagnostic Tester BT77

www.kohtect.com

Bearing Monitoring Made Easy! BT77 Bearing tester is a handheld, pocket-size, user friendly instrument for fast and easy measurement of bearing condition in preventive/predictive maintenance. Bearing tester measures shock pulses with an external impact probe and RPM sensor. Modern industrial maintenance requires informed decisions on measures to optimize equipment and component performance. Timely failure prediction and detection is a key to cut machine down-time and reduce operating costs. Machine breakdowns are frequently caused by bearing damage. Unplanned downtime, as well as unnecessary repair work, can be significantly reduced by periodically checking the pulse of bearing health!

The patented shock pulse sensors with IR tachometer make bearing condition tester a durable and multifunctional instrument.Using the Shock Pulse technique, bearing condition tester measures the condition of all ball and roller bearings elements of any sizes.The instrument is design with well protective silicon wrap for rugged maintenance field.Measurement results can be interpret easy by shock pulse normalizing table in green, yellow and red zone given an instant and reliable indication of equipment condition in an easy-to-understand way.External probes allow ease access with proper measurement location that is hard to reach compare to built-in sensor type of instruments.Rechargable battery save to trouble of battery replacement and money. Automatic shut-off conserves battery power. When switched back on, BT77 resumes its last mode.

Features:

• •

• •

•

•

Date/time

Tunings

N(RPM)

Innerbeardia

Invitlevel

Lubrication

Measure-ments

Results of diagnostics, recomendations Bearing

Yamazen / Production Flr / Good Stk / 0514 095219dBm dBc

05/14/07 10:24:00

05/14/07 10:27:04 05/14/07 10:29:56

05/14/07 10:31:28 05/14/07 10:33:04 05/14/07 10:34:40

05/14/07 10:36:14

05/14/07 10:39:48

200

1000

2000

5000

1000

2000

5000

200

80

65

65

65

80

80

80

65

7

20

26

34

21

27

35

6

24

12

11

11

10

10

16

27

16

8 6

7 4 3

8

18

The generation of defects of bearing. Satisfactory conditionof lubrificant. Partial additive of lubrificant.

Good state of bearing. Good state of oil. Good state of bearing. Good state of oil. Good state of bearing. Good state of oil. Good state of bearing. Good state of oil. Good state of bearing. Good state of oil.

The generation of defects of bearing. Good state of oil.

The generation of defects of bearing. Satisfactory conditionof lubrificant. Partial additive of lubrificant.

60

40

20

0 Time

dBm dBc

dB

New good bearing with proper lubrication reading

Time

60

40

20

0

dBm

dBc

dB

Running bearing with reduced lubrication

Proper lubrication

film

Reduced lubrication

film

Shock Pulsesignal

Most Shock Pulse signal

BearingLoad

Compact Bearing Diagnostic Tester BT77

www.kohtect.com

Technical Speci�cations

BT77 & SensorHousing material Industrial chassis IP65 with silicon protector against drop shockOperating temperature -10ºC to 55ºCBattery life 10 hours continuous operatingAutomatic shutoff approx. 3minHand-held sensor External sensor probe, patent №UA18652Probe length 200mmResonance frequency 32kHzPower indicator LED Measurement unit Carpet Value (dBc) and Max Value (dBm)Range 99dBm

Resolution 1dBi

Accuracy ± 5dBMemory capacity 2MB Output interface High speed USB portDimensions Approx. 60 x 110 x 30mm

Tachometer,T1-7Operating temperature -10ºC to 55ºCSensor distance up to 1 m (39”)Range, N 50 - 30,000rpmResolution 1rpm

Carrying CaseStandard PP with form insertedCase dimension Approx. 420 x 295 x 105mmWeight incl. all std parts 2.3Kgs

Standard Delivery:1. BT77 display unit w/built-in rechargeable battery2. Bearing condition probe w/cable attached3. Tachometer w/1.5m cable attached4. Magnetic mounting stand for Tachometer5. AC charger, 230 Volts-50Hz6. USB cable, 1.5m7. Luminous marker8. Conspect PC software & Operating manual in CD -ROM9. Carry case w/ form inserted 10. Maker Calibration & Quality certificates

Representative:

01/08 Specifications subject to change without notice.