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Description
The SKF TKRS 31 Advanced LED and Laser Stroboscope is a compact, high-performance inspection instrument designed for visually examining rotating, reciprocating and vibrating machinery while it remains in operation. By synchronizing its powerful LED flashes with the speed of a moving component, the TKRS 31 creates the appearance of stationary or slow-motion movement, allowing maintenance professionals to identify irregular motion, vibration, misalignment, belt problems, fan damage and other mechanical issues without shutting down the machine.
Equipped with six ultra-bright LEDs, the SKF TKRS 31 delivers more than 5,600 lux of illumination and offers an exceptionally wide flash-rate range of 30 to 300,000 flashes per minute. Its integrated laser tachometer measures rotational speeds from 30 to 300,000 RPM at distances up to 2 meters. The automatic laser synchronization function quickly matches the strobe frequency to the machine speed, reducing setup time and simplifying accurate inspections.
Adjustable flash duration, phase-shift and slow-motion functions provide clear observation of fast-moving components and help users evaluate movement patterns and rotational direction. The TKRS 31 also includes an external trigger connection for synchronization with machinery or sensors, along with a backlit color TFT display, onboard memory and Bluetooth connectivity.
Lightweight, portable and powered by three AA batteries, the SKF TKRS 31 stroboscope and laser tachometer is ideal for predictive maintenance, condition monitoring, speed measurement and troubleshooting of motors, fans, belts, pulleys, gears, shafts, couplings, spindles and other industrial machinery.
Key Features
- Advanced LED and laser stroboscope for inspecting rotating and reciprocating machinery while it remains in operation
- Six ultra-bright LEDs produce more than 5,600 lux at 0.3 m
- Wide flash-rate range from 30 to 300,000 flashes per minute
- Integrated laser tachometer measures speeds from 30 to 300,000 RPM
- Automatic laser synchronization simplifies flash-rate adjustment
- Measures rotational speed from distances up to 2 m (6.6 ft)
Specifications
Technical Data
| Designation | TKRS 31 |
| Light Power | >5,600 Lux at 3° flash duration and 0.3 m (12 in.) distance |
| Brightness (Flash Duration) | Adjustable, 0.2°–5.0° |
| Accuracy | ±0.02% (±1 digit / ±0.025 µs), whichever is greater |
| Laser Speed Measurement | Yes |
| Phase Shift | Yes, with slow motion function |
| Run Time | Approx. 3:45 h @ 1° (100% display brightness) Approx. 8:15 h @ 0.2° (20% display brightness) |
| Display | Multi-line backlight TFT |
| Power Source | 3 x AA batteries (included) |
| Power Adapter and Charger | N/A |
External Trigger & Signal
| External Trigger Range | 30 to 300,000 f/min |
| External Trigger Connection | 3.5 mm TRS plug (included) |
| Trigger Input | 3–30 V / max. 5 mA (NPN) |
| Trigger Output | Up to 30 V / max. 50 mA (NPN) |
| Signal Modification | Edge selection, Multiplier, Divider, Delay |
Dimensions & Weight
| Instrument Dimensions | 225 x 78 x 50 mm (8.9 x 3 x 2 in.) |
| Instrument Weight (Incl. Batteries) | 0.3 kg (0.65 lb) |
| Case Dimensions | 260 x 180 x 85 mm (10.2 x 7.1 x 3.3 in.) |
| Total Weight (Case + Instrument) | 0.79 kg (1.7 lb) |
Disclaimer: Apollo Industries is not an authorized distributor, reseller, or representative of SKF. All SKF trademarks and product names are the property of their respective owners. We sell genuine SKF products purchased through independent channels.
