Compare Model Drawings, CAD & Specs Angular Range Maximum Speed Minimum Incremental Motion Load Capacity Thread Type Availability Price
New BGM120BPP -45 to +45° 20°/s 2.0 mdeg 200 N 1/4-20
$10,535
BGM120CC -45 to +45° 20°/s 2.0 mdeg 200 N 1/4-20 $10,535
$11,100
BGM120PE -45 to +45° 2°/s 2.0 mdeg 200 N 1/4-20 $11,100
$16,888
BGM120PEBV6 -45 to +45° 2°/s 2.0 mdeg 200 N 1/4-20 $16,888
bg series motorized goniometric cradles with 3 goniometer stages shown
$17,181
New BGM160BPP -45 to +45° 20°/s 2.0 mdeg 1/4-20 $17,181
bg series motorized goniometric cradles with 3 goniometer stages shown
$17,574
BGM160CC -45 to +45° 20°/s 2.0 mdeg 1/4-20 $17,574
bg series motorized goniometric cradles with 3 goniometer stages shown
$18,494
BGM160PE -45 to +45° 2°/s 2.0 mdeg 1/4-20 $18,494
bg series motorized goniometric cradles with 3 goniometer stages shown
$25,877
BGM160PEBV6 -45 to +45° 2°/s 2.0 mdeg 1/4-20 $25,877
$16,348
In Stock
BGM160PP -45 to +45° 20°/s 2.0 mdeg 1/4-20
In Stock
$16,348
bg series motorized goniometric cradles with 3 goniometer stages shown
$21,473
New BGM200BPP -45 to +45° 20°/s 2.0 mdeg 1/4-20 $21,473
bg series motorized goniometric cradles with 3 goniometer stages shown
$22,130
BGM200CC -45 to +45° 20°/s 2.0 mdeg 1/4-20 $22,130
bg series motorized goniometric cradles with 3 goniometer stages shown
$21,614
BGM200PE -45 to +45° 2°/s 2.0 mdeg 1/4-20 $21,614
$4,919
In Stock
BGS50CC -30 to +30° 10°/s 0.50 mdeg 20 N 8-32
In Stock
$4,919
$4,636
In Stock
BGS50PP -30 to +30° 4°/s 0.20 mdeg 20 N 8-32
In Stock
$4,636
$6,353
In Stock
BGS80CC -45 to +45° 20°/s 0.50 mdeg 60 N 1/4-20
In Stock
$6,353
$5,737
2 Weeks
BGS80PP -45 to +45° 20°/s 0.20 mdeg 60 N 1/4-20
2 Weeks
$5,737
New M-BGM120BPP -45 to +45° 20°/s 2.0 mdeg M6
$10,535
M-BGM120CC -45 to +45° 20°/s 2.0 mdeg M6 $10,535
$11,100
M-BGM120PE -45 to +45° 2°/s 2.0 mdeg M6 $11,100
$16,888
M-BGM120PEBV6 -45 to +45° 2°/s 2.0 mdeg M6 $16,888
bg series motorized goniometric cradles with 3 goniometer stages shown
$17,181
New M-BGM160BPP -45 to +45° 20°/s 2.0 mdeg M6 $17,181
bg series motorized goniometric cradles with 3 goniometer stages shown
$17,574
M-BGM160CC -45 to +45° 20°/s 2.0 mdeg M6 $17,574
bg series motorized goniometric cradles with 3 goniometer stages shown
$18,494
M-BGM160PE -45 to +45° 2°/s 2.0 mdeg M6 $18,494
bg series motorized goniometric cradles with 3 goniometer stages shown
$25,877
M-BGM160PEBV6 -45 to +45° 2°/s 2.0 mdeg M6 $25,877
bg series motorized goniometric cradles with 3 goniometer stages shown
$21,473
New M-BGM200BPP -45 to +45° 20°/s 2.0 mdeg M6 $21,473
bg series motorized goniometric cradles with 3 goniometer stages shown
$22,130
M-BGM200CC -45 to +45° 20°/s 2.0 mdeg M6 $22,130
bg series motorized goniometric cradles with 3 goniometer stages shown
$21,614
6 Weeks
M-BGM200PE -45 to +45° 2°/s 2.0 mdeg M6
6 Weeks
$21,614

M- versions have metric threads. V6 versions are vacuum compatible.

Specifications

  • Stage Type
    Motorized Goniometer
  • Angular Range
    -45 to +45° (-30 to +30° - BGS50 versions)
  • Graduations
  • Origin
    Optical, at 0°
  • Cable Length
    3 m

Features

Open Rotation Platform

The BGS 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.

Direct Mounting Interface

BG cradles are designed so that two adjacent-sized models mounted orthogonally, such as BGS80 with BGM120, pivot about the same point in space. For a third rotation axis, yaw for example, a rotation stage can be mounted under the assembly. The direct mounting capability saves set-up time, design time, and adapter plate costs.

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.

Performance DC Motor and Encoder Versions

The BG cradles are available in DC motor versions, which results in higher torque and repeatability. All encoders come with index pulses for precision homing. The BGS50CC uses a miniature DC servo motor, kept in a compact, lightweight package. All other models feature a high resolution, worm mounted rotary encoder which bypasses most drive train errors, resulting in improved bi-directional repeatability. The BGM models use high torque DC motors with a built-in tachometer to provide superior speed stability.

Stepper Motor Versions

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

Goniometric Cradle Load Characteristics