Available Options
The BGM120PE Goniometer features a worm mounted rotary encoder for improved accuracy and repeatability. The encoder also provides a method for detecting motor stalling, an important feature for applications with high loads or torques. The PE full-step version with a reduction gear provides a higher torque and is recommended for high inertia payloads. BG Series goniometric cradles rotate on a transverse axis above the platform. Compared to full 360 ° rotation stages, they offer maximum free access to the rotating part and allow construction of very compact multi-axis rotation assemblies. BG cradles are designed so that orthogonal mounting of two adjacent-size cradles (e.g., BGS50 and BGS80) provides two perpendicular rotational axes intersecting at about the same point in space. Mounting a rotation stage under the assembly adds a third orthogonal rotation axis through the same point. Precision rotation is ensured by a precision ground, hardened worm gear drive. Single row ball bearings and precision ground tool-steel races ensure smooth rotation with minimal wobble and eccentricity. A home switch, conveniently located at the center of travel, facilitates the return of the platform to a level position.
feature | |
Accuracy, Typical | ±25 mdeg |
Angular Range | -45 to +45° |
Bi-directional Repeatability (Typical) | ±12 mdeg |
Cable Length | 3 m |
Centered Load Capacity | 300 N |
Connectors | DB25 - Male |
Encoder Resolution | 0.001° |
Feedback | Worm mounted rotary encoder with index pulse, 2,000 cts/rev |
Limit Switches | Mechanical, at ± 45° |
Load Capacity | 300 N |
Maximum Speed | 2°/s |
Maximum Torque | 20 Nm |
Minimum Incremental Motion | 2.0 mdeg |
MTBF | 20,000 h (25% load, 10% duty cycle) |
Origin | Optical, centered |
Origin Repeatability | ±2.5 mdeg |
RoHS | Compliant |
Thread Type | 1/4-20 |
Transversal Compliance | 5 µrad/Nm |
Travel Range | 160 mm |
Uni-directional Repeatability (Typical) | ±2.0 mdeg |
Weight | 18 kg |
Wobble, Typical | ±100 µrad |