Compare Model Drawings, CAD & Specs Centered Load Capacity Minimum Incremental Motion Bi-directional Repeatability (Typical) Availability Price
200 N 2.0 mdeg ±12 mdeg
$11,722
200 N 2.0 mdeg ±12 mdeg
$17,833
200 N 2.0 mdeg ±12 mdeg
bg series motorized goniometric cradles with 3 goniometer stages shown
$18,142
300 N 2.0 mdeg ±12 mdeg
bg series motorized goniometric cradles with 3 goniometer stages shown
$19,529
300 N 2.0 mdeg ±12 mdeg
bg series motorized goniometric cradles with 3 goniometer stages shown
$27,325
300 N 2.0 mdeg ±12 mdeg
bg series motorized goniometric cradles with 3 goniometer stages shown
$22,674
500 N 2.0 mdeg ±12 mdeg
bg series motorized goniometric cradles with 3 goniometer stages shown
$22,823
500 N 2.0 mdeg ±12 mdeg
$4,896
In Stock
20 N 0.20 mdeg ±8 mdeg
In Stock
$6,058
6 Weeks
60 N 0.20 mdeg ±2.5 mdeg
6 Weeks
200 N 2.0 mdeg ±12 mdeg
$11,722
200 N 2.0 mdeg ±12 mdeg
$17,833
200 N 2.0 mdeg ±12 mdeg
bg series motorized goniometric cradles with 3 goniometer stages shown
$18,142
300 N 2.0 mdeg ±12 mdeg
bg series motorized goniometric cradles with 3 goniometer stages shown
$19,529
300 N 2.0 mdeg ±12 mdeg
bg series motorized goniometric cradles with 3 goniometer stages shown
$27,325
300 N 2.0 mdeg ±12 mdeg
bg series motorized goniometric cradles with 3 goniometer stages shown
$22,674
500 N 2.0 mdeg ±12 mdeg
bg series motorized goniometric cradles with 3 goniometer stages shown
$22,823
500 N 2.0 mdeg ±12 mdeg

DC Motor version is also available.

Specifications

Features

Precision Multi-Axis Assemblies

BG goniometers are designed so that two adjacent-sized models can be directly mounted orthogonally to each other (for example, BGS80 with BGM120) to pivot about the same point in space. The direct mounting capability saves set-up time, design time, and adapter plate costs. For additional rotation axes, a rotation stage can be mounted under the assembly or on the top BG platform. The video demonstrates an open access, multi-axis tip, tilt and rotation assembly with two BG goniometers and two rotation stages.

Open Rotation Platform

The BG series stages provide up to ±45° of transverse axis rotation enforced with mechanical limit switches. The stage is designed for maximum free access to the rotating platform, allowing for simplified stacking and mounting.

Precision Worm Gear Drive

Precise rotation is ensured by a precision ground, hardened worm gear drive. In addition to being non-backdrivable, the worm gear drive's advantages include higher MIM, repeatability, and overall accuracy.

Ball Bearings with Tool-Steel Races

Single-row ball bearings and precision-ground, hardened tool-steel races ensure smooth rotation with minimal wobble and eccentricity. This allows for higher load capacities, stiffness, and stability.

Stepper Motor Versions

The BPP and PP mini-step drive versions are for applications that require higher speeds. For higher torque and vacuum applications, the PE full-step drive version is recommended.

Basic working principle of a stepper motor

CONEX Controller Version

Newport also offers a version of the DC motor, 50-mm2 platform goniometer with integrated CONEX controller, the CONEX-BGS50CC. For out-of-the box control, the CONEX controller is preconfigured and delivered with the BGS50CC goniometer.

Vacuum Compatible Versions

The (M-)BGM120PEBV6 and (M-)BGM160PEBV6 are the vacuum compatible versions of the BG stepper motor goniometers. They can be used in a vacuum environment down to 10-6 hPa. Their performance is similar to their corresponding BGM-PE stepper motor goniometer.

Goniometric Cradle Load Characteristics

Compatible Controllers

Compatible motion controllers for these stepper motor driven stages are shown below:

* Minimum incremental motion is 0.50 mdeg for BGS80PP with ESP301 and SMC100P controllers.
   Maximum speed is 0.8°/s for BGM-PE with SMC100P controller.