Connect a Oscillating spindle sander 2-1/2 in port to a Numatic Henry 32 mm hose
How to join a Oscillating spindle sander 2-1/2 in port to a Numatic Henry 32 mm hose, and what stops it leaking dust.
Not compatible without stepping down. A Numatic Henry 32 mm hose is far larger than the Oscillating spindle sander 2-1/2 in port, so it needs a 2-1/2 in to 32 mm step reducer.
Rings drawn to scale from the measured diameters in the table below.
The two ends
| End A | Oscillating spindle sander 2-1/2 in port (2-1/2 in OD, 64 mm OD) |
|---|---|
| End B | Numatic Henry 32 mm hose (1-1/4 in ID) |
| Fit type | male port into hose cuff |
| Reducer needed | 2-1/2 in to 32 mm 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 32 mm step reducer is needed, and even reduced the airflow is mismatched between the Oscillating spindle sander 2-1/2 in port and the Numatic Henry 32 mm 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
Shop 2-1/2 in to 32 mm step reducer on AmazonaffiliateFind 2-1/2 in to 32 mm step reducer on eBayaffiliateRelated connections
- Oscillating spindle sander 2-1/2 in port2-1/2 in OD dust port
- Numatic Henry 32 mm hose32 mm (1-1/4 in)
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