What the evidence establishes
Both Pro Lift manuals name collar 57022 for Bosch 1617 and DeWalt DW618; Porter-Cable 7518 mounts without that collar.
Where to stop and check
PROMAXRT 25574 requires the separate modification bulletin. The small-plate Amazon listing was not conclusively matched to this SKU, so no buying link is attached.
Confirm the exact model on your motor and table before using the fit selector. Missing support parts, modifications and different product generations can change the installation. Follow the current router, lift and table instructions.
Buying identity
No exact retailer offer has been verified for this record. Use the manufacturer source below to confirm the model; we have left the buying link off.
Sources for this record
- Rockler Pro Lift product specification (opens in a new tab)
52429 and 55803 plate identities. Diameter text conflicts; manuals control motor fit.
Manufacturer source reviewed 2026-09-11 - Rockler 52429 manual, page 4 (opens in a new tab)
4.2-inch Porter-Cable 7518; named smaller motors require collar 57022.
Manufacturer source reviewed 2026-09-11 - Rockler PROMAXRT 25574 modification bulletin (opens in a new tab)
52429 installation in 25574 needs manufacturer-documented modification.
Manufacturer source reviewed 2026-09-11