Hose size
1-1/4 in vacuum hose: tank ends, tool adapters and hose type
1-1/4 in names the hose, not its tank end: Cen-Tec's 42324 cuff ends in a 2.25 in OD press fit. The tank and tool adapters makers name for 1-1/4 in hose.
Also listed as 1.25 in hose, 1-1/4 inch hose, 32 mm class hose
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Short answer
1-1/4 in is a hose-family label for small tool hoses. The tank end is usually a different size: Cen-Tec's 42324 cuff threads onto 1.25 in hose and ends in a 2.25 in OD press fit, and its 41213 fits shop vacuums with a 2.63 in opening. DEWALT, Bosch and Cen-Tec each name their own tool-side parts. The catch: Cen-Tec's threaded fittings are for threaded crushproof hose, not most blow-molded hoses that come with shop vacuums. See connecting a 1-1/4 in hose to a shop vac.
Key facts
- What the label measures
- The hose family. The tank end is a different size: Cen-Tec's 42324 cuff has a 1.25 in threaded hose end and a 2.25 in OD press-fit tank connector[3]No source gives the hose's own inside or outside diameter.
- Maker-dimensioned examples
- Cen-Tec 95567 (10 ft) and 95578 (16 ft): 1.25 in static-dissipative hose with multi-brand tool adapters[4]Cen-Tec does not state the cuff OD on that listing.
- Tank and cuff ends
- Cen-Tec 42324: 2.25 in OD press fit (high-impact ABS). Cen-Tec 41213: for shop vacuums with a 2.63 in opening. Cen-Tec 34982: 1.50 in female slip end[3]Cen-Tec does not tie 2.63 in openings to any brand.
- Metric arithmetic
- 1.25 in x 25.4 = 31.75 mm[5]Arithmetic from the inch definition, not a fit allowance.
- Step adapters to other sizes
- Tool side: DEWALT DWV9000 for DEWALT sanders on other vacs with 1-1/4 in hoses; Bosch VAC002 or VAC024 for 1-1/4 or 1-1/2 in hose; Cen-Tec soft TPE adapters of 0.75, 1, 1.25 and 1.5 in[1][2][3]Each maker names its own parts; none confirms another maker's.
- Couplers and clamps
- Cen-Tec 42104: a 1.25 in hose extension adapter[3]
- Separators made for this size
- Not confirmed
- Do not confuse with
- Blow-molded stock shop-vac hoses: Cen-Tec says its 41125 and 40751 fittings fit 1-1/4 in threaded crushproof hose and are not compatible with most blow-molded hoses[6][7]
- Not confirmed
- Not confirmed
Watch out for
- A 1-1/4 in hose rarely ends in a 1-1/4 in tank fitting. Cen-Tec's 42324 cuff steps to a 2.25 in OD press fit, and its 41213 fits a 2.63 in opening.
- Cen-Tec's threaded fittings fit 1-1/4 in threaded crushproof hose, not most blow-molded hoses supplied with shop vacuums.
- DEWALT's DWV9000 route is for other vacs with 1-1/4 in hoses; DEWALT does not say every other brand's cuff fits it.
What fits
Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.
1-1/4 in hose kit
Cen-Tec Systems 95567 Quick Click 1‑1/4 in x 10 ft static-dissipative hose with power tool adapter setChoose the 10 ft kit (95567).
Cen-Tec lists a 1.25 in static-dissipative hose with multi-brand tool adapters and a 2.25 in OD tank cuff.
Tool adapters
Cen-Tec Systems 95237 Quick Click expanded multi-brand power tool adapter setChoose the Quick Click adapter set.
For Cen-Tec 1-1/4 in threaded crushproof hose only; Cen-Tec says its fittings do not fit most blow-molded shop-vac hoses.
Questions
Will a 1-1/4 in hose plug straight into my shop vac?
Usually not without a cuff. Cen-Tec's 42324 cuff steps a 1.25 in hose to a 2.25 in OD tank press fit, and its 41213 fits shop vacuums with a 2.63 in opening.[3]
Do Cen-Tec fittings fit the hose that came with my shop vac?
Cen-Tec says its 41125 and 40751 threaded fittings fit 1-1/4 in threaded crushproof hose and are not compatible with most blow-molded hoses supplied with shop vacuums.[6]
Is 1-1/4 in the same as 32 mm?
By arithmetic, 1.25 in is 31.75 mm. That calculation is not a fit allowance; see metric vacuum hoses.[5]