Danfoss Airflex 414361 + 4CB200 Constricting Clutch/Brake: Complete Industrial Automation Solution
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What is the Airflex 4CB200?
The 4CB200 is a Vickers Airflex constricting clutch/brake element — the air-inflated ring, made by Danfoss, that closes inward around a rotating drum to couple or stop heavy machinery. This assembly carries part number 142840JB (revision A, built 05-2025), an eight-segment friction set marked 414361 inside the neoprene tube, an eight-hole mounting flange, and a brass 90-degree air fitting; the sleeve warns never to inflate it without the drum in place, maximum 110 PSI. It arrives as Danfoss shipped it — carton labelled 142840JB, quantity 1, with the O-ring kit bagged alongside and the burn-in warning label on the shell. One unit, new, 2 kg. All 9 photos and 1 video below show this exact element.
Part details
| Field | Value |
|---|---|
| Brand / line | Vickers Airflex, by Danfoss (Danfoss A/S, 6430 Nordborg, Denmark) |
| Type | Constricting (contracting) pneumatic clutch/brake element, 4CB 200 frame |
| Assembly part number | 142840JB, revision A |
| Friction segment set | 414361, moulded 1625 25 414361, 8 segments |
| Build date / file | 05-2025, file C250513 |
| Air supply | Brass 90° elbow fitting; maximum 110 PSI |
| Critical warning | DO NOT INFLATE WITHOUT HAVING DRUM IN PLACE |
| Burn-in label | Danfoss orange warning: linings must be worn in before service, IOM at airflex.com |
| Mounting | 8-hole steel flange; O-ring kit included |
| Origin | Made in China |
| Quantity | 1, new in Danfoss carton (labelled 142840JB, qty 1) |
| Shipping weight | 2 kg |
Values are read from the element label, the moulded segment marking and the carton label in the photo set.
How a constricting element does its job
Airflex builds two families of pneumatic clutch: expanding (tube tires push outward onto an internal drum) and constricting — this one. The neoprene tube sits inside a steel rim; admitting air collapses it inward, pressing the eight friction segments against the outside of a rotating drum, and venting releases them instantly. That geometry makes the 4CB series the standard stop-and-hold element on dredges, presses, paper machinery and marine winches, where a fail-safe brake that grabs hard and releases clean matters more than fine modulation. The two labels on the shell carry the discipline the element demands: never inflate it free-standing — without a drum resisting, the tube balloons past its shape limit — and keep the pressure at or under 110 PSI. The orange Danfoss label adds the run-in rule the manual repeats: the lining must be worn in at reduced duty before the element sees full service torque, and the installation-and-operation manual lives at airflex.com under the 142840JB number. The moulded 414361 code inside identifies the friction segment set, so a rebuild orders linings by that number and keeps the shell. KOEED quotes Airflex elements from active and EOL stock — send the assembly number for a quote.
Photos and video
All images below are original KOEED warehouse photos. Click any photo to view it full size.
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