Connect a Dust collector 5 in inlet to a 2-1/2 in Craftsman locking hose
How to join a Dust collector 5 in inlet to a 2-1/2 in Craftsman locking hose, and what stops it leaking dust.
Not compatible without stepping down. A 2-1/2 in Craftsman locking hose is far larger than the Dust collector 5 in inlet, so it needs a 5 in to 2-1/2 in step reducer.
Rings drawn to scale from the measured diameters in the table below.
The two ends
| End A | Dust collector 5 in inlet (5 in ID) |
|---|---|
| End B | 2-1/2 in Craftsman locking hose (2-1/4 in OD, 2-1/4 in ID) |
| Fit type | hose cuff into female socket |
| Reducer needed | 5 in to 2-1/2 in step reducer |
Shop notes
The hose tip is about 57 mm and the port socket about 127 mm, a gap of 70 mm, so the port socket simply swallows the hose tip with no contact. A 5 in to 2-1/2 in step reducer is needed, and even reduced the airflow is mismatched between the Dust collector 5 in inlet and the 2-1/2 in Craftsman locking hose.
Wrapping tape to close a 70 mm gap never seals cleanly and chokes the airflow further. Step the sizes properly, or pair each end with a fitting closer to its own size.
The reducer to buy
Shop 5 in to 2-1/2 in step reducer on AmazonaffiliateFind 5 in to 2-1/2 in step reducer on eBayaffiliateRelated connections
- Dust collector 5 in inlet5 in inlet (approx 127 mm)
- 2-1/2 in Craftsman locking hose2-1/2 in, cuff approx 2-1/4 in OD
- DeWalt DWS779 / DWS780 miter saw port to 2-1/2 in Craftsman locking hoseneeds a reducer
- DeWalt miter saw dust elbow (1-1/2 in outer) to 2-1/2 in Craftsman locking hoseneeds a reducer
- DeWalt random-orbit sander stepped port to 2-1/2 in Craftsman locking hoseneeds a reducer
- DeWalt DW735 planer port to 2-1/2 in Craftsman locking hoseneeds a reducer