Star points/arms are precision radial extensions on star wheels that engage with mating components to transfer motion in indexing and conveying systems.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Backlash | <0.1° | |
| Maximum RPM | 50-300 RPM | |
| Diameter Range | 50-500 mm | |
| Indexing Angle | 90°, 60°, or 45° respectively | |
| Number Of Arms | 4, 6, or 8 (most common) | |
| Torque Capacity | 10-500 Nm | |
| Positioning Accuracy | ±0.05° to ±0.5° |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
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Manufacturer profiles associated with Star Points/Arms.
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Star points typically refer to the tapered ends that engage with mating components, while star arms refer to the entire radial extension including the structural portion. In practice, the terms are often used interchangeably for the complete protruding element.
The number of arms depends on required indexing angle and duty cycle. More arms provide shorter dwell times and smoother motion but reduce torque capacity per arm. Common configurations: 4 arms (90° indexing), 6 arms (60°), 8 arms (45°).
Regular inspection for wear on engagement surfaces, lubrication of bearing surfaces (if applicable), and checking for proper alignment. Replacement is typically needed when wear exceeds 0.5mm or positioning accuracy degrades beyond specifications.
Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.