9 Best Flexible Bellows Couplings

List Updated August 2020

Bestselling Flexible Bellows Couplings in 2020


Ikakon KF-16 Metal Bellows Hose Fit for ISO-KF Flange Size NW-16 (500mm/19.68 inch)

Ikakon KF-16 Metal Bellows Hose Fit for ISO-KF Flange Size NW-16 (500mm/19.68 inch)
BESTSELLER NO. 1 in 2020
  • These KF-16 Metal Hose Bellows Flex Coupling vacuum fittings follow ISO-KF standards and have a flange size of NW-16.
  • They are unsheathed and butt welded. Commonly used to build foreline vacuum plumbing and process systems.
  • A circumferential clamp and centering ring form the vacuum seal between the connecting flanges.
  • Soft, flexible, easy to bend, vibration absorbing

Vibrant 61004 3" x 4" Long Flexible Stainless Steel Coupler

Vibrant 61004 3
BESTSELLER NO. 2 in 2020
  • Interlock liner design maximizes durability.
  • 304 stainless steel construction

Conflat Flange (CF) Flexible Coupling, CF 2-1/8 inches, DN25CF Bellows Hose, 304 Stainless Steel Fittings (250mm / 9.84 inch)

Conflat Flange (CF) Flexible Coupling, CF 2-1/8 inches, DN25CF Bellows Hose, 304 Stainless Steel Fittings (250mm / 9.84 inch)
BESTSELLER NO. 3 in 2020

Ruland MBC19-6-5-A 2024 or 7075 Aluminum Hubs Bellows Coupling, Clamp Style, 6 mm x 5 mm Bores, 19.1 mm OD, 30.2 mm Length

Ruland MBC19-6-5-A 2024 or 7075 Aluminum Hubs Bellows Coupling, Clamp Style, 6 mm x 5 mm Bores, 19.1 mm OD, 30.2 mm Length
BESTSELLER NO. 4 in 2020
  • Zero-backlash with high torsional stiffness for excellent accuracy and repeatability
  • Balanced design reduces vibration at high speeds
  • Thin walls of the bellows allow the coupling to flex easily yet remain rigid under torsional loads
  • Hardware exceeds DIN 912 12.9 standards for maximum torque capabilities
  • All Ruland products are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS2 and REACH compliant

Conflat Flange (CF) Flexible Coupling, CF 1-1/3 inches, DN16CF Bellows Hose, 304 Stainless Steel Fittings (1000mm/39.37 inch)

Conflat Flange (CF) Flexible Coupling, CF 1-1/3 inches, DN16CF Bellows Hose, 304 Stainless Steel Fittings (1000mm/39.37 inch)
BESTSELLER NO. 5 in 2020

Enpoint™ CNC Motor Bellows Coupling 6.35x6.35mm 22x37mm Clamp Style Bellows Shaft Coupler Aluminum Hubs with Stainless Steel Bellows Completed Shaft Coupling for Stepper Encoder Servo

Enpoint™ CNC Motor Bellows Coupling 6.35x6.35mm 22x37mm Clamp Style Bellows Shaft Coupler Aluminum Hubs with Stainless Steel Bellows Completed Shaft Coupling for Stepper Encoder Servo
BESTSELLER NO. 6 in 2020

Vibrant 60804 2.5" x 4" Long Flexible Stainless Steel Coupler

Vibrant 60804 2.5
BESTSELLER NO. 7 in 2020
  • Easy Installation

Vacuum Flexible Bellows Hose, CF35 CF 2-3/4 inches, DN35CF Bellows Hose, Stainless Steel Fittings Flex Coupling (1000mm / 39.37" )

Vacuum Flexible Bellows Hose, CF35 CF 2-3/4 inches, DN35CF Bellows Hose, Stainless Steel Fittings Flex Coupling (1000mm / 39.37
BESTSELLER NO. 8 in 2020

Lovejoy 77015 Size BWLC-78 Bellows Clamp Style Coupling, Complete Coupling, Metric, 15 mm Bore A, 15 mm Bore B, 2.598" OD, 3.071" Length, 531 in-lbs Nominal Torque, 8600 rpm Max Rotational Speed

Lovejoy 77015 Size BWLC-78 Bellows Clamp Style Coupling, Complete Coupling, Metric, 15 mm Bore A, 15 mm Bore B, 2.598
BESTSELLER NO. 9 in 2020
  • Bellows coupling for use in instrumentation, medical equipment, sensitive high precision drives, and other high precision positioning applications requiring high torsional stiffness and torsional integrity
  • Aluminum hubs with clear anodized finish for corrosion resistance
  • Stainless steel bellows for corrosion resistance
  • Clamp-style mount for secure attachment to shaft
  • Rotational speeds up to 12,700 rpm

The Collective Memory, Boomer Style

Coupling your memories can confuse - and enrich - aging boomers

It goes without saying that 40-plus years of marriage hold a lot of memories. What becomes less clear, as time pushes us relentlessly onward, is what those memories are - and whose. That funny line, "What's mine is mine, and what's yours is …mine!" takes on new meaning when the "yours" and "mine" have been mixing this long, and are now decidedly cloudy.

"Barry [names have been changed to protect the innocent] says he's coming over. I'll make him his favorite, meatballs. "

"Barry hates meatballs."

"I thought that was Harry."

"No, Harry hates ham."

"No, he used to hate ham, until he married Mary. Now he likes it. Pan-fried, with scalloped potatoes."

"How do you remember these things, when you can't find the car?"

Between the two of us, we can pretty much puzzle things out. When he is surprised by a sweater that appears overnight on his side of the closet, I remind him that it was a Christmas present from one of the boys, nine years ago. It snowed like crazy that morning, doesn't he remember? When I can't find my car keys for the thousandth time, he knows where to look and hands them over, albeit with a big sigh, before he asks if I have seen his glasses case.

On a recent anniversary, I thought it would be fun to pull out our wedding album and see what we remembered. (First challenge: finding the album.) It didn't take long to go through the mostly standard shots of bride, groom, wedding party, cake. But the pictures prompted questions. Was Lucy there? When did Bob get married? No, they're not divorced. He died, I think. No, they moved to Arizona. How do you know? It was all in their Christmas card, at some point. Okay, enough. Let's go see a movie. We did that last year. No, that was two years ago. Really? Yes, we saw "Up in the Air." Did I like it? No. But you wore that sweater and you looked good.

For years, I've kept a journal. More therapy for me than anything else, it is now acquiring the gravitas of our historical record. Where did we spend our vacation in 1986? What was the name of our crazy neighbor in Virginia? Silly trivia, good times. Then I stumble upon a name that conjures up fear and loathing, and I can't remember why, and that's a good thing too. When he wonders whatever happened to so-and-so, and neither of us has a clue, mostly we let these answers go: in the here-and-now of our memory, many things simply do not matter anymore.

Often our intensely shared experiences - births, tragedies, weddings, illnesses - benefit from this necessary merging of our faltering memories. While he was focused on the bride's brilliant smile, I was watching the flower girl - our granddaughter - toss her petals and not trip. He remembers one son's home run; I remember another's role in a Christmas pageant. He hit a homer? He played Joseph? Who knew? He can't forget how bitterly cold it was the day his father died. I will always remember his last sweet words to my mother. We are each enriched by the details in the other's memory.

I take lots of pictures - so we won't forget, I like to think - but am not good at recording names and dates on the back. I should know better: I've got a boxful of photos of dead ancestors in my closet, nameless and dateless. So here we go again: when was this taken? Is this Harry or Barry? Where are we? Sometimes he knows, sometimes I do. When neither has a clue, I may make something up and jot it on the back. "Barry at the lake, 1989" works if the shot was taken at a distance and you can't really tell if it's Harry or Barry, and they aren't around to argue. Or maybe they don't know either. Nobody's getting any younger around here, after all.

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