When a placement-head repair has already been narrowed to the THK R2 module, replacing the complete head may add cost and work that the repair does not require. P/N 03057489 is a Pick+Place Module used as a repair-level component inside the head assembly.
Inconsistent vertical travel, placement-height variation or module-related motion problems can make this part one of the components to inspect. These symptoms are not enough to diagnose the module by themselves, so the parent head and installed position should be checked first.
If the THK R2 module is confirmed as the repair item, replacing at module level can return the existing parent head to service without automatically sourcing a complete head.

03057489 THK R2 Module Specifications
| Part Number | 03057489 |
|---|---|
| Part Designation | Pick+Place Module THK R2 |
| Variant | R2 |
| Assembly Level | Placement-head repair module |
| Function Type | Pick & Place module |