Connect a Milwaukee power-tool 2-1/2 in port to a 1-1/4 in shop-vac hose
How to join a Milwaukee power-tool 2-1/2 in port to a 1-1/4 in shop-vac hose, and what stops it leaking dust.
Not compatible without stepping down. A 1-1/4 in shop-vac hose is far larger than the Milwaukee power-tool 2-1/2 in port, so it needs a 2-1/2 in to 1-1/4 in step reducer.
Rings drawn to scale from the measured diameters in the table below.
The two ends
| End A | Milwaukee power-tool 2-1/2 in port (2-1/2 in OD, 64 mm OD) |
|---|---|
| End B | 1-1/4 in shop-vac hose (approx 1-1/2 cuff in OD, 1-1/4 in ID) |
| Fit type | male port into hose cuff |
| Reducer needed | 2-1/2 in to 1-1/4 in step reducer |
Shop notes
The hose is about 32 mm and the port about 64 mm, a gap of 32 mm, so the port simply swallows the hose with no contact. A 2-1/2 in to 1-1/4 in step reducer is needed, and even reduced the airflow is mismatched between the Milwaukee power-tool 2-1/2 in port and the 1-1/4 in shop-vac hose.
Wrapping tape to close a 32 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
Search Amazon for 2-1/2 in to 1-1/4 in step reduceraffiliate searchRelated connections
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