
External vibrators & tables
Electric high-frequency external vibrators.
The HTR and HTRS drive 6,000 rpm compaction into formwork and vibrating tables, running on 42V or 250V at 200Hz. Force ratings run from 5 to 19.5 kN, with bolt-down (HTR) or rapid-coupling (HTRS) mounting to suit the setup. The engineering matches the rest of the external range — low-loss rotors, class-H insulation, heat-treated shafts and long-life bearings — and our frequency inverters give control from 0 to 6,000 rpm.
| Type | Centrifugal force (kN) | Weight (kg) | Input power (W) | Amperage @42V (A) | Amperage @250V (A) | Fixing (mm) |
|---|---|---|---|---|---|---|
| HTR 500* | 5.15 | 13.1 | 700 | 11.3 | 1.9 | 140 x 105 x 11 |
| HTR 1000* | 9.25 | 20.0 | 1050 | 17.0 | 2.9 | 154 x 111 x 13 |
| HTR 1500* | 15.11 | 23.5 | 1600 | 26.0 | 4.4 | 180 x 100 x 17 |
| HTR 2000* | 19.50 | 42.0 | 2000 | 34.0 | 5.7 | 190 x 140 x 17 |
| HTRS 500 | 5.15 | 12.0 | 700 | 11.3 | 1.9 | Rapid coupling M17 |
| HTRS 1000 | 9.25 | 19.3 | 1050 | 17.0 | 2.9 | Rapid coupling M23 |
| HTRS 1500 | 15.11 | 21.8 | 1600 | 26.0 | 4.4 | Rapid coupling M23 |
Figures transcribed from Lievers Holland data sheets. Values are never invented; “—” means no data.
Comparison
Each machine in this category is designed for the same application, but optimized for different power options, site conditions, and user requirements.

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Electric high-frequency external vibrators.
Maximum compaction performance.
High-frequency external vibrator (6,000 rpm).
Maximum compaction performance.
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They drive 6,000 rpm compaction into formwork and vibrating tables, powered by frequency converters at 42V or 250V/200Hz. Force ratings run from 5.15 kN (HTR/HTRS 500, 12–13.1 kg) to 19.5 kN (HTR 2000, 42 kg); the HTR is bolt-mounted while the HTRS uses a rapid coupling (M17/M23).
Yes. Frequency inverters give control from 0 to 6,000 rpm, and switchboxes with thermal overload relays for running multiple vibrators together are available on request.
Every Lievers machine comes with a one-year warranty. Register your machine and you get a second year on top — two years of cover in total.
Lievers machines are backed by a network of local service points with spare parts on hand, so maintenance and repairs stay close to the job. Get in touch and we'll point you to the nearest one.