I’d expect to see some unit bearing axle upgrades for this new design that brings more splines or larger diameter shafts. Unit bearings are in use by lots of race teams on heavy duty stuff, they have 40 spline ones running on ultra4 trucks.
Canyon Lake, Texas. Great video. One correction, the only axles that will loose a wheel when broken are the c clip retainer style. Like the Dana 35 or Ford 8.8. An old Dana 44 is held in place by bolts on the end. You can still drive it slowly. Seen it and done it.
Thanks for the very reluctant, perhaps accidental disassembly video😉 First break down I've seen, other than the cut-away diagram... I appreciate it!!! Oh, Peace River, Alberta, Canada Cheers!
How does the shaft not go flying through that center cap through centripetal force. Like that 14B, there is a flange machined into the shaft to secure to the 'hub' of housing. So that is securing the shaft into the housing. Aftermarket would also have bolt caps to secure a splined shaft. Think there is a 'c-clip' on the inside to retain the shaft? To compare to the front, there is a center axle nut in the middle of the unit bearing (hub bearing) to secure the shaft. As the knuckle turns, the shaft slides in/out of the diff housing as its rigid to the unit bearing (hub bearing). That shaft can't be splined at both ends and not be secured to the housing in some way, free floating. What was the spline count? Probably 30spline in the e-locker as a factory setup. Too bad it tapers down at the unit bearing (hub bearing). Looks like the tube has room for a larger shaft as well. Aftermarket will open this up quite a bit. Think Ford Superduty, where there is still a manual lockout on a hub bearing shaft (no center axle shaft nut). Many racers use the Spidertrax unit bearings on the rear of an axle housing with a cap securing the free floating shaft (splined at both ends). Expect lockouts for the purpose of flat towing, like yesteryear of the flatties and early-mid 70s CJs. Many place D44 lockouts on the ends of the full float D44s, or changed the semi-float to full float with aftermarket products.
Man this kind of bums me out. Las Vegas Nevada, I think of full float and I think 8 lug, snapped axle and you don’t even need to take the wheel off. Undo the axle bolts pull it out. If you’re lucky you can fish out the broken end with a magnet or something and slide in a spare axle. (In a perfect scenario) I feel like jeep fooled us on this one. It’s got to be stronger right?
Definitely makes trail repairs much easier Don't need to separate the pumpkin unless you can't get the broken parts out hopefully that tapered end does make for the weak point so that you can extract the rest of the axle out from the end
Chicago! Stupid question! So does someone with a Dana 60 now have a 5K tow rating too? I was wondering if anything else contributed to the extended tow rating, like maybe a stiffer frame??? Also, thank you so much for making this video. I’ve been really curious about these new axles. These will make rear wheel bearing replacements a breeze.
I’m not really sure. I didn’t think a Jeeps tow capacity was limited by the axle or frame. I’d have thought it was more of a weight and wheelbase thing.
I’m watching from Camden, Ohio. Thanks for showing the actual rear wheel disassembly. I’ve watched other videos of people explaining what a full floating axle is, but you’re actually showing one. Thank you!
Did you happen to count the splines? It would have been interesting to see if the splines on the inside are the same also. Large strength gains can be had by increasing spline count and diameter.
Thanks for making a video showing the new rear axle. I hope you dont mind if I refer back to your video in an upcoming tech talk. Ill be giving you credit for the video of course.
Sunnyvale CA! One quick question, does it mean that there is oil leak from the diff which should seals everything inside the diff. Or maybe the oil was just for the axle shaft, not from the center diff?
13:07 Hello, are those four bolts the same at the semifloat rubicon axle? Is it possible to purchase the whole unit( the part you disassembled) and bolt on to my 22 rubicon?
Detroit. That flange on the end of the tube is massive, compared to the bearing retainer on an older 44. Interesting how the axle doesn't hold the unit bearing together, like it does in front axle (and IRS) applications. I doubt the necked portion of the shaft is a weak spot. The axle shaft is likely heat treated on the ends to protect the splines, while remaining somewhat flexible in torsion though its main section. This is the biggest part that makes full floaters stronger- the shaft is allowed to have torsional flexion, which dampens shock loads. This bearing design certainly makes at-home rear wheel bearing replacement much more straight forward, since you no longer need to get the bearings pressed off/onto the axle shafts. Probably same overall cost, but now done with simple hand tools, in a super-8 parking lot, if necessary.
Good point on the heat treating. As for how the bearing assm is kept together, I'm curious too. I've seen front 4x4 unit bearing fall apart because someone forgot to install the CV nut.
Factory design unit bearings (hub bearings) are usually pressed together. Seems once you place the torque on the nut to retain the shaft in the hub bearing, its 'loaded'. Over time, that torque unloads due to the 'wear' of the bearing. Thus they need to be changed on street/trail vehicles that use greater size tires/wheels as that wear progresses its life-time expectancy.
Enterprise, FL! The first time I saw a unit bearing on a rear axle was on a Crane Axle unit. They use an F450 bearing for managing really big tires with really big horsepower on really big hills. Adam at Crane said he first saw this design on a Spidertrax non-steer rear axle. I wonder if the front and rear unit bearings are the same on the new JL? Look at the space and weight savings when carrying spare parts...
I wonder if the Jeep can be driven with the shaft removed without the unit bearing failing. It looks like it could as there is no nut on the axle shaft. I wonder what is holding the unit bearing together? Until, I see a cross-sectional drawing, my preference is still on spindles and drive flanges.
That's the whole point of a full floating axle. Yes you can still drive with a broken axle in or completely removed. Of course this is dependent on rear locker and 4wd and/or front locker situation.
I’d expect to see some unit bearing axle upgrades for this new design that brings more splines or larger diameter shafts. Unit bearings are in use by lots of race teams on heavy duty stuff, they have 40 spline ones running on ultra4 trucks.
Canyon Lake, Texas. Great video. One correction, the only axles that will loose a wheel when broken are the c clip retainer style. Like the Dana 35 or Ford 8.8. An old Dana 44 is held in place by bolts on the end. You can still drive it slowly. Seen it and done it.
I agree, I kinda rushed that part. I was just referring to if the axle broke out past the bearing, which doesnt ever really happen 😂
Thanks for the very reluctant, perhaps accidental disassembly video😉 First break down I've seen, other than the cut-away diagram... I appreciate it!!! Oh, Peace River, Alberta, Canada Cheers!
I had to stop to compose myself several times😂
Hello, I'm watching you from Hermosillo, Sonora, mexico!
Yo could brake down the front axle to see what's new with it!
This will make differential service (adjusting/regearing) so much easier as well.
How does the shaft not go flying through that center cap through centripetal force. Like that 14B, there is a flange machined into the shaft to secure to the 'hub' of housing. So that is securing the shaft into the housing. Aftermarket would also have bolt caps to secure a splined shaft. Think there is a 'c-clip' on the inside to retain the shaft? To compare to the front, there is a center axle nut in the middle of the unit bearing (hub bearing) to secure the shaft. As the knuckle turns, the shaft slides in/out of the diff housing as its rigid to the unit bearing (hub bearing). That shaft can't be splined at both ends and not be secured to the housing in some way, free floating.
What was the spline count? Probably 30spline in the e-locker as a factory setup.
Too bad it tapers down at the unit bearing (hub bearing). Looks like the tube has room for a larger shaft as well. Aftermarket will open this up quite a bit. Think Ford Superduty, where there is still a manual lockout on a hub bearing shaft (no center axle shaft nut). Many racers use the Spidertrax unit bearings on the rear of an axle housing with a cap securing the free floating shaft (splined at both ends). Expect lockouts for the purpose of flat towing, like yesteryear of the flatties and early-mid 70s CJs. Many place D44 lockouts on the ends of the full float D44s, or changed the semi-float to full float with aftermarket products.
Man this kind of bums me out. Las Vegas Nevada, I think of full float and I think 8 lug, snapped axle and you don’t even need to take the wheel off. Undo the axle bolts pull it out. If you’re lucky you can fish out the broken end with a magnet or something and slide in a spare axle. (In a perfect scenario)
I feel like jeep fooled us on this one. It’s got to be stronger right?
Nice video! thank you so much for the explanation! (Y)
Definitely makes trail repairs much easier Don't need to separate the pumpkin unless you can't get the broken parts out hopefully that tapered end does make for the weak point so that you can extract the rest of the axle out from the end
Interesting video! I heard the 2024 Rubicons did this and your down to shwo us! ThankYou I subscribed! Watching you from Perris,California 🍻
Thanks!
Fairfield CT. Reminds me of c clip eliminator for 8.8 ford.
I’m not here for jeep videos but I’m glade I watched anyways
McHenry, Illinois. Interesting video
Chicago! Stupid question! So does someone with a Dana 60 now have a 5K tow rating too? I was wondering if anything else contributed to the extended tow rating, like maybe a stiffer frame??? Also, thank you so much for making this video. I’ve been really curious about these new axles. These will make rear wheel bearing replacements a breeze.
I’m not really sure. I didn’t think a Jeeps tow capacity was limited by the axle or frame. I’d have thought it was more of a weight and wheelbase thing.
I’m watching from Camden, Ohio. Thanks for showing the actual rear wheel disassembly. I’ve watched other videos of people explaining what a full floating axle is, but you’re actually showing one. Thank you!
Simi Valley California. Nice to know how my 2024 Rubi is built
Did you happen to count the splines? It would have been interesting to see if the splines on the inside are the same also. Large strength gains can be had by increasing spline count and diameter.
No, I messed up there, I shoulda counted them.
If you pause you can count the spines on the hub. It looks like 35 splines which is interesting, but it may not be a standard pitch
Hell ya my man that’s what I’m talking about for real.
Thanks for doing this so I don't have to!!
Subbed! Super informative about full float! Rancho Cordova, California
Great video that answered some of my questions. Plant City, Florida
When I get something on my mind I gotta know one way or another
JLR 2-door greeting from Downtown Salt Lake City, UT 🙂
Nice Rockton Illinois
This video made me subscribe
Crown point In. ( Lake of the four season )
Elko, Nevada
the minute i see one of thise jeeps in the wreck yard im snatching that axle and stuffing it in my jeep LJ as a fun little project 😁😁
Haha it better be that minute never seen a jeep make 2 minutes in the yard before someone takes the whole dam thing
@Shannon-xx8tp I was gonna say "the second I see one" but I Said minute to be more in spec 🙄
Gotta be quick!
Central South Carolina
Thanks for making a video showing the new rear axle. I hope you dont mind if I refer back to your video in an upcoming tech talk. Ill be giving you credit for the video of course.
Please do!
Homestead, Florida
Kinston North Carolina
Placerville California
International space station toilet room, space. Great video.
That’s a semi float axle
Manchester, Ky
plantation florida
Levittown PA
El Mirage, Arizona
Salyersville ky
Belen, New Mexico
SANFORD,NC
Fort Lupton,CO
Looks like Willow wants to take a drive in the Jeep. Really still slippers!
Slippers make the world go 'round.
Hello 👋
Good information 👍🏽
Full floating axles on 2024’s
I’m watching from peace river, Alberta
Hartland, WI
Sunnyvale CA! One quick question, does it mean that there is oil leak from the diff which should seals everything inside the diff. Or maybe the oil was just for the axle shaft, not from the center diff?
Oil still lubricates that outer bearing assembly like most axles.
@@PootsGarage cool! That's very helpful!
I wonder if the gladiators will get it as well? Let me know if you know?
That I do not know.
sweet
Willow!
New-Brunswick Canada
Nova Scotia. Canada
13:07 Hello, are those four bolts the same at the semifloat rubicon axle? Is it possible to purchase the whole unit( the part you disassembled) and bolt on to my 22 rubicon?
I have no idea. I’m not familiar with the semi-float version either.
Thank you so much. I’ll figure it out if it’s possible and let you know
No videos lately bro what’s going on?
Nothin much goin on, waiting for a few things to happen
👍 Casa Grande, Az.
thanks for showing it!!!!
Marlette Michigan great video
Thankyou
For inquiring minds... there's your answer and no parts left over. It's a good thing.😊 from Henderson, NV.
Ok man watching from Regina Saskatchewan Canada 🇨🇦.
Watching from Levittown Puerto Rico❤
Your the first from Puerto Rico, thanks!
Memphis, IN. Interesting, thank you!
Thanks for showing us this. Truro Nova Scotia Canada is where i am watching from.
NORTH PHOENIX AZ 🌵
Yorktown, VA. Dig your content and great to see someone with a 2 door these days!
Columbus, Indiana here. That was awesome!
watching from mckinney texas
Detroit. That flange on the end of the tube is massive, compared to the bearing retainer on an older 44. Interesting how the axle doesn't hold the unit bearing together, like it does in front axle (and IRS) applications. I doubt the necked portion of the shaft is a weak spot. The axle shaft is likely heat treated on the ends to protect the splines, while remaining somewhat flexible in torsion though its main section. This is the biggest part that makes full floaters stronger- the shaft is allowed to have torsional flexion, which dampens shock loads.
This bearing design certainly makes at-home rear wheel bearing replacement much more straight forward, since you no longer need to get the bearings pressed off/onto the axle shafts. Probably same overall cost, but now done with simple hand tools, in a super-8 parking lot, if necessary.
Good point on the heat treating. As for how the bearing assm is kept together, I'm curious too. I've seen front 4x4 unit bearing fall apart because someone forgot to install the CV nut.
Factory design unit bearings (hub bearings) are usually pressed together. Seems once you place the torque on the nut to retain the shaft in the hub bearing, its 'loaded'. Over time, that torque unloads due to the 'wear' of the bearing. Thus they need to be changed on street/trail vehicles that use greater size tires/wheels as that wear progresses its life-time expectancy.
Heidelberg, Germany. Great Video!
Great info!
New sub in Gilbert, AZ
el monte, ca
Viewing from Simi Valley CA
Dubai - U.A.E over here 👋
Enterprise, FL! The first time I saw a unit bearing on a rear axle was on a Crane Axle unit. They use an F450 bearing for managing really big tires with really big horsepower on really big hills. Adam at Crane said he first saw this design on a Spidertrax non-steer rear axle. I wonder if the front and rear unit bearings are the same on the new JL? Look at the space and weight savings when carrying spare parts...
If front and rear are the same, that would be awesome
Las Cruces, New Mexico
Glocester Rhode Island
Germany Stuttgart 🤘🏻🤘🏻
Gillette, Wyoming
Oxford, MS
Akron,ohio
Boston, MA says thank you
Rolla Missouri. Everyone says it has a 5000ib tow rating now but Jeep says nothing I can find in the owner's manual
I think 5k is for the 4dr. My owners manual says 3500.
@@PootsGarage Thanks, I'll look at the online manual which has way more information than the hard copy that came with the Jeep
I wonder if the Jeep can be driven with the shaft removed without the unit bearing failing. It looks like it could as there is no nut on the axle shaft. I wonder what is holding the unit bearing together? Until, I see a cross-sectional drawing, my preference is still on spindles and drive flanges.
That's the whole point of a full floating axle. Yes you can still drive with a broken axle in or completely removed. Of course this is dependent on rear locker and 4wd and/or front locker situation.
I dont see why not, there really is nothing else holding the unit bearing together.
Cool. By my count, 35 splines in the unit bearing.
Good point, I forgot to count the splines!
1.37" is likely a 31 spline...but different manufacturers use different spline pitches...