SKF Multi–Functional Digital Tachometer

SKU: TKRT 21 Category: Brand:

SKF Multi–Functional Digital Tachometer TKRT-21, helps to detect abnormal rotating and linear speeds.


SKF Multi–Functional Digital Tachometer TKRT-21

The TKRT-21 is a multi-functional digital tachometer that uses laser or contact measurement to determine rotational and linear speeds. The device allows fast, easy measurement at a safe distance from rotating machinery. It offers high speed and distance versatility in several measurement modes. In addition, it facilitates easy measurement when straight-line access is difficult. The TKRT 21 is supplied with a basic set of contact adaptors and can be used with either standard or rechargeable batteries.

Features & benefits
  • User can choose to measure a range of attributes, including: rpm, Hz, m, ft or in per minute or second, and length
  • Compact, with large LCD display. Operated using one hand, it includes a basic set of contact adaptors. Runs on standard or rechargeable batteries.
  • Aimed at maintenance staff, it is well suited for inspecting rotating equipment and machinery – using preventive maintenance to optimise operations
  • Laser sensor allows fast and easy measurement at a safe distance from rotating machinery. Usable in many applications, as it has several measurement modes and wide speed range
  • Enables easy measurement in areas where straight-line access is difficult
Technical Data
Designation TKRT 21
General Low battery indicator Yes
Auto switch off Yes
Display LCD
Display update Continuous
Controls Direct selector switches
Housing material ABS (plastics)
Measurement Optical modes rpm and Hz
Contact modes rpm and Hz, meters, feet, inch, per min and per sec
Count modes Distance mode
Speed capture feature Maximum, Minimum or Average rate
Linear speed Meters, feet, inch, per min and per sec
Optical measurement Rotational speed range 1 to 99 999 r/min
Accuracy ±0.01% of reading ±1 digit
Measuring distance 25 to 1 200 mm (1 to 47 in)
Angle of operation ±30°
Laser sensor Built-in class 2 laser
Contact measurement Rotational speed range Max. 20 000 rpm for 36 000 sec
Accuracy ±0.1% of reading ±1 digit (> 120 rpm)
Contact adaptors Included with removable cones and wheel 6”
Battery and power Power source 2 x AA batteries, rechargeable can be used
Run time ca. 50% Laser-On: 12:00 h
Size and weight Product dimensions 295 × 70 × 38 mm (11.6 × 2.8 × 1.5 in)
Case dimensions 260 × 85 × 180 mm (10.2 × 3.3 × 7.1 in)
Unit weight 270g (0.6 lb)
Total weight (incl. case) 850g (1.9 lb)
Operating requirements Operating temperature 0 to 40 °C (32 to 104 °F)
Storage temperature –20 to 45 °C (–4 to 113 °F)
Type of protection for indication only IP 40
Case contents 1 × Tachometer TKRT 21
2 × Conical tips
1 × Wheel
2 × AA batteries
1 × Set of reflective tape
1 × Instructions for use
Designation Description
TKRT WHL12 12″ wheel for TKRT 21 and TKRT 31
TKRT TIPS 1x Extension shaft, 2x conical tips, 2x wheel (0.1m and 6”.) for TKRT 21 and TKRT 31
Spare Parts
Designation Description
TKRT 21-CA Case for TKRT 21