RVD Differential Roller Screws
The differential roller-screw principle produces extremely fine effective leads for precise, high-reduction linear motion in small envelopes.
Overview
The RVD differential roller screw uses a difference in thread pitch between elements to produce a very small effective lead — a large motor rotation yields a tiny, highly controlled linear movement. This high reduction gives exceptional resolution and mechanical advantage for the most demanding precision tasks.
Features
Ultra-fine effective lead
Differential principle yields extremely small linear steps.
High mechanical advantage
Large reduction from rotary input to linear output.
Exceptional resolution
For the most precise positioning requirements.
Benefits
- Reach resolutions beyond conventional screws.
- Gain mechanical advantage for fine, high-force adjustment.
Applications
- High-precision instrumentation
- Optical alignment
- Research and beamline positioning
- Fine adjustment mechanisms
Data tables
Representative capability envelope. Every screw is verified against your specific load case before we quote — request full data tables for exact geometry, load ratings and tolerances.
| Parameter | Range |
|---|---|
| Nominal diameter | on request |
| Effective lead | ultra-fine |
| Reduction | high |
| Positioning class | to specification |
| Configuration | Differential rollers |
CAD files
2D and 3D CAD models are available for design-in. Visit downloads or request CAD for a specific size.