pocket spacing
**Pocket spacing** is the **center-to-center distance between consecutive component pockets in carrier tape** - it defines feeder indexing step and pick timing synchronization.
**What Is Pocket spacing?**
- **Definition**: Pocket pitch is standardized by component class and tape format specifications.
- **Machine Interface**: Feeder advance increments must match spacing exactly for proper pick position.
- **Orientation Control**: Pocket geometry and spacing together maintain component alignment.
- **Error Sensitivity**: Incorrect pitch interpretation causes no-pick or mispick events.
**Why Pocket spacing Matters**
- **Placement Yield**: Correct indexing is required for consistent nozzle pickup accuracy.
- **Throughput**: Stable pocket stepping minimizes feeder retries and cycle interruptions.
- **Automation Reliability**: Pitch mismatch can create repetitive line stoppage patterns.
- **Traceability**: Pocket indexing consistency supports accurate component count and usage logging.
- **Setup Robustness**: Pitch awareness is essential during new-part onboarding.
**How It Is Used in Practice**
- **Feeder Verification**: Confirm pitch settings during setup checklist execution.
- **Pilot Run**: Perform short dry-run pickup validation before production release.
- **Supplier Control**: Audit tape pocket dimensions and spacing compliance for critical parts.
Pocket spacing is **a key indexing parameter for reliable feeder operation** - pocket spacing accuracy should be validated early because indexing errors can quickly propagate into line-wide defects.