RODOSET®
RODOSET® variable distance units are precision mechanical levelling components designed to provide stable support and accurate height adjustment in machine assemblies.
Distinctive feature
RODOSET® units combine structural rigidity with precise height adjustability in a compact mechanical design.
The adjustment mechanism is based on a fine-pitch threaded system that enables both coarse positioning and fine regulation of the overall assembly height, ensuring high repeatability and installation accuracy.
Their robust construction allows the units to operate as both a positioning and load-bearing element within machine assemblies.
Applications
RODOSET® levelling units are widely used for the installation and alignment of electric motors, gear motors, pumps, compressors, and other rotating or power transmission equipment.
They provide a stable and adjustable base for machine components, ensuring accurate positioning without the need for custom adjustment brackets or welded structures.
Typical applications include:
- machine tool bases and auxiliary equipment
- conveyor and belt drive systems (including belt tensioning adjustments)
- industrial machinery installation and alignment
- OEM machine construction
- maintenance and retrofit operations requiring repositioning or realignment
Thanks to their adjustability, RODOSET® units are also ideal when periodic re-alignment is required, for example to restore belt tension or correct installation deviations without dismantling the system.
RODOSET® distance units – Advantages
RODOSET® levelling units allow precise height adjustment even in compact and heavily loaded assemblies.
Key advantages include:
- fast and accurate height regulation without machining operations
- elimination of shims, adjustment plates, and custom brackets
- high structural rigidity and load-bearing capacity
- compact installation footprint compared to traditional adjustment systems
- reliable and repeatable positioning over time
- simplified maintenance and re-alignment procedures
The robust mechanical structure ensures stable performance even under significant axial loads, while maintaining precise adjustment capability.
Definition
RODOSET® units are height-adjustable spacers used to support and align mechanical components while allowing controlled vertical positioning.
They are designed to replace traditional adjustment systems such as shim stacks, threaded brackets, or custom support structures, providing a standardized and repeatable solution for machine installation and alignment.
Height adjustment is achieved by rotating the upper element using a hook wrench, enabling precise positioning while maintaining full structural stability under load.
Technical description
RODOSET® units are manufactured from high-strength 42CrMo4 alloy steel, ensuring excellent mechanical strength and resistance to axial loads.
The threaded adjustment system is pre-lubricated, allowing smooth and reliable adjustment even after long-term installation and preventing seizure effects over time. Surface protection is provided by zinc plating for standard environments, while stainless steel versions in AISI 303 and AISI 316 are available for corrosive or hygiene-critical applications.
The range includes multiple configurations designed for different installation requirements, including:
- standard levelling units (RDU series)
- pre-settable or low height (RDUK / RDUL series)
- self-aligning washes for alignement compensation (RDWS series)
- integrated self-aligning top versions (RDUS series)
Certain configurations allow compensation of angular misalignment up to approximately 4°, enabling installation even between non-parallel mounting surfaces.
The fine-pitch threaded system ensures both a wide adjustment range and high positioning accuracy, while maintaining predictable and repeatable mechanical behavior under load.
 | SIGLA/SIGLE | FORMA/FORM | MATERIALE/MATERIAL | Viti/Bulloni Screw/Bolt Vis/Boulon | ||
|---|---|---|---|---|---|---|
| tipo | mis. | var. | Min → Max | |||
| RDU | .. | – | Distanziale variableVariable distance Entretoise variable | acciaio/steel/acier 42 CrMo4,protetto da zincatura galvanica protected by galvanic zinc protégé par du zinc gavanisé | M6 → M36 | |
| RDU | .. | A1 | acciaio/steel/acier inox Aisi303 | |||
| RDU | .. | A4 | acciaio/steel/acier inox Aisi316 | |||
| Esempio di sigla: RDU 40-22A1 – tipo RDU, filettatura M40x1,5, adatto per viti da M20, in acciaio inox Aisi303 Example: RDU 40-22A1 – type RDU, threading M40x1,5, suitable for screw M20, stainless steel AISI303 Exemple: RDU 40-22A1 – type RDU, filettage M40x1,5, adapté pour les vis M20, enacier inoxydable Aisi303 | ||||||
 | SIGLA/SIGLE | FORMA/FORM | MATERIALE/MATERIAL | Viti/Bulloni Screw/Bolt Vis/Boulon | ||
| tipo | mis. | var. | Min → Max | |||
| RDUK | .. | – | Distanziale variable con controghiera Variable distance with locknut Entretoise variable avec contre-écrou | acciaio/steel/acier 42 CrMo4, protetto da zincatura galvanica protected by galvanic zinc protégé par du zinc gavanisé | M6 → M36 | |
| RDUK | .. | A1 | acciaio/steel/acier inox Aisi303 | |||
| RDUK | .. | A4 | acciaio/steel/acier inox Aisi316 | M6 → M48 | ||
| Esempio di sigla: RDUK 50-26A4, filettatura M50x1,5, adatto per viti M24, in acciao inox Aisi316 Example: RDUK 50-26A4 – type RDUK, threading M50x1,5, suitable for screw M24, stainless steel Aisi316 Exemple: RDUK 50-26A4 – type RDUK, filatture M50x1,5, adapté pour les vis da M24, enacier inoxydable Aisi316 | ||||||
 | SIGLA/SIGLE | FORMA/FORM | MATERIALE/MATERIAL | Viti/Bulloni Screw/Bolt Vis/Boulon | ||
| tipo | mis. | var. | Min → Max | |||
| RDUL | .. | – | Distanziale variable ingombro ridottoVariable distance pressure switch Entretoise variable encombrement réduit | acciaio/steel/acier 42 CrMo4,protetto da zincatura galvanica protected by galvanic zinc protégé par du zinc gavanisé | M6 → M36 | |
| RDUL | .. | A1 | acciaio/steel/acier inox Aisi303 | |||
| RDUL | .. | A4 | acciaio/steel/acier inox Aisi316 | |||
| Esempio di sigla: RDUL 20-11, tipo RDUL, filettatura M20x1, adatto per viti da M10, in acciaio zincato Example: RDUL 20-11, type RDUL, threading M20x1, suitable for screw M10, in zinc-plated steel Exemple: RDUL 20-11, type RDUL, filatture M20x1, adapté pour les vis da M10, enacier zingué | ||||||
| SIGLA/SIGLE | FORMA/FORM | MATERIALE/MATERIAL | Viti/Bulloni Screw/Bolt Vis/Boulon | ||
| tipo | mis. | var. | Min → Max | |||
| RDUS | .. | – | Distanziale variable accoppiamento sferico Variable distance spherical coupling Entretoise variable accouplement sphérique | acciaio/steel/acier 42 CrMo4,protetto da zincatura galvanica protected by galvanic zinc protégé par du zinc gavanisé | M6 → M36 | |
| RDUS | .. | A1 | acciaio/steel/acier inox Aisi303 | |||
| RDUS | .. | A4 | acciaio/steel/acier inox Aisi316 | |||
| Esempio di sigla: RDUS 40-22A1 – tipo RDUS, filettatura M40x1,5, adatto per viti da M20, in acciaio inox Aisi303 Example: RDUS 40-22A1 – type RDUS, thread M40x1,5, suitable for screw M20, stainless steel Aisi303 Exemple: RDUS 40-22A1 – type RDUS, filettage M40x1,5, adapté pour les vis M20, enacier inoxydable Aisi303 | ||||||
 | SIGLA/SIGLE | FORMA/FORM | MATERIALE/MATERIAL | Ø Foro passante Hole Trou | ||
|---|---|---|---|---|---|---|
| tipo | mis. | var. | Min → Max | |||
| RDWS | .. | – | Elemento autoallineante accoppiamento sferico Auto Alignment Component spherical coupling Élement d’autoalignement accouplement sphérique | acciaio/steel/acier 42 CrMo4,protetto da zincatura galvanica protected by galvanic zinc protégé par du zinc gavanisé | Ø 8,5 → Ø 58 | |
| RDWS | .. | A1 | acciaio/steel/acier inox Aisi303 | |||
| RDWS | .. | A4 | acciaio/steel/acier inox Aisi316 | |||
| Esempio di sigla: RDWS 30-11A1 – tipo RDWS, Ø int. 20mm, Ø est. 45, appoggio sup. Ø 40mm, in acciaio inox Aisi303 Example: RDWS 30-11A1 – type RDWS, Ø int. 20mm, Ø est. 45, support sup. Ø 40mm, in stainless steel Aisi303 Exemple: RDWS 30-11A1 – type RDWS, Ø int. 20mm, Ø est. 45, support sup. Ø 40mm, enacier inoxydable Aisi303 | ||||||
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