Connect a SawStop table-saw rear guard port to a 4 in dust-collector hose
How to join a SawStop table-saw rear guard port to a 4 in dust-collector hose, and what stops it leaking dust.
Not compatible without stepping down. A 4 in dust-collector hose is far larger than the SawStop table-saw rear guard port, so it needs a 4 in to 2-1/2 in dust-collector Y or reducer.
Rings drawn to scale from the measured diameters in the table below.
The two ends
| End A | SawStop table-saw rear guard port (2-1/2 in OD, 64 mm OD) |
|---|---|
| End B | 4 in dust-collector hose (4-1/4 port in OD, 4 in ID) |
| Fit type | male port into hose cuff |
| Reducer needed | 4 in to 2-1/2 in dust-collector Y or reducer |
Shop notes
The guard port is 2-1/2 in OD and a 4 in collector hose is 4 in ID, so the hose swallows the port with no seal. A 4-to-2-1/2 in reducer or Y-fitting is needed, and even then a high-volume collector is mismatched to a small guard port.
A 4 in collector on a 2-1/2 in guard port loses most of its velocity at the reduction. The guard belongs on a shop vac; put the 4 in collector on the cabinet or the table-saw main port instead.
Related connections
- SawStop table-saw rear guard port2-1/2 in OD
- 4 in dust-collector hose4 in ID
- SawStop table-saw rear guard port to 2-1/2 in shop-vac hosedirect fit
- 4 in dust-collector hose to 2-1/2 in shop-vac hoseneeds a reducer
- DeWalt DWS779 / DWS780 miter saw port to 4 in dust-collector hosenot compatible
- DeWalt miter saw dust elbow (1-1/2 in outer) to 4 in dust-collector hosenot compatible