The URS75BPP is a stepper motor-driven precision rotation stage providing 360° continuous motion in a low-profile package. It features a geared worm drive with a 1:90 gear ratio, a flexible preloading system for backlash-free operation, and two independently adjustable optical limit switches. The stage has a maximum torque of 0.5 N·m, a bi-directional repeatability of ±0.0005°, and a maximum speed of 40°/s. It offers typical unidirectional repeatability of ±0.0003° and accuracy of ±0.010°. The stage includes a SUB-D15M connector and a 3 m cable. The sealed ball bearings provide low wobble (±12 µrad typical) and eccentricity (±0.3 µm), and the tilted worm screw arrangement enables four symmetric mounting holes for enhanced load support. The stage measures 102.5 mm × 102.5 mm × 35.6 mm and is compatible with Newport's XPS and ESP301 controllers.
The URS75BPP Rotation Stage provides precision 360° continuous motion in a low profile package. It meets the requirements of numerous research and industrial applications and is directly compatible with our VP, XM, GTS and other series of linear stages. This 0.5 N·m maximum torque stepper motor version is a more economical for less demanding applications. All URS rotation stages feature a proprietary 4-point contact ball bearing. The unique, 2-piece design of the URS provides a low-profile compact stage with exceptional stiffness, high reliability and outstanding wobble and eccentricity.
Tilted Worm Screw
The tilted worm screw arrangement allows for 4 symmetric mounting holes as compared to other designs that only feature 2 or 3 mounting holes. This enables the URS-B stages to provide better support of higher or off-centered loads. Additionally, the flexible preloading system for the worm gear was improved to minimize backlash during operation.
URS50CPP Top View
Economical Micro-stepping Stepper Motor
The stepper motor version is a more economical version for less demanding applications. When used with motion controllers with high micro-step capability, like the XPS or ESP30x, low noise operation and very small incremental motions are guaranteed. The stepper motor versions do not use encoder feedback, but reach a position by the number of commanded steps and microsteps. For this purpose, the stepper motor is directly attached to the worm screw using a proprietary bellows coupling that has a high torsional stiffness, eliminating the need for a gear or belt drive. The high output torque of the stepper motor minimizes the risk of lost steps and provides good linearity between commanded microsteps and the actual motion of the stage.
Basic working operation of a micro-stepping stepper motor
Proprietary Ball Bearings
All URS-B rotation stages feature a proprietary ball bearing to provide a low-profile compact stage with exceptional stiffness, high reliability and low wobble and eccentricity.
Limit Switches
Except for the URS50 version, all URS stages feature adjustable limit switches to prevent over travel.
| Newport MKS | |
|---|---|
| Product Category | Rotary Stages |
| Product Number | URS75BPP |
| Product Name | Motorized Rotation Stage, Stepper, Continuous 360° Motion, URS75 |
| Drive Type | Stepping Motor |
