PortMatchMatch any tool dust port to any shop-vac or collector hose, with the exact reducer

5 in dust-collector hose: measured bore 5 in ID (approx 127 mm). Which tool dust ports it fits directly and where a reducer is needed.

Updated 05 September 2026.

PORT / HOSE

5 in dust-collector hose diameter

The real bore and cuff diameter of the 5 in dust-collector hose and what it connects to.

ID127 mm5 in, 127 mm

Rings drawn to scale from the measured diameters in the table below.

Measured hose dimensions

Fitting typefemale cuff (goes over a port or into a socket)
Inner diameter / bore (ID)5 in, 127 mm
Nominal size5 in ID (approx 127 mm)
Mating diameter (mm)127

Shop notes

Used on: Larger single-stage and cyclone dust-collector trunk lines.

The 5 in flex hose carries the main trunk from a collector before it reduces to 4 in at the tool drops. It moves substantially more air than a 4 in line and needs a 5-to-4 in reducer to meet a 4 in machine port.

Questions and answers

What is the fitting type of the 5 in dust-collector hose diameter?

female cuff (goes over a port or into a socket)

What is the inner diameter / bore (id) of the 5 in dust-collector hose diameter?

5 in, 127 mm

What is the nominal size of the 5 in dust-collector hose diameter?

5 in ID (approx 127 mm)

What is the mating diameter (mm) of the 5 in dust-collector hose diameter?

127