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Re: Dana 30 front wheel bearings
TIME OUT!
Why don't you take the bearings that you have and simply match them up? Clearly, the inner and outer bearings are different, the inner is larger. The bearings you have have markings on them that can be used to buy more bearing sets just like what you already have. I strongly urge you to not modify the parts that you find because they are engineered for a very important job. The changes you are considering can make the bearings out-of-round -- which would be a disaster -- or at least make them weaker -- which can't be a good thing on the front of your truck. "KayakBill" <kayakbill@bellsouth.net> wrote in message news:1152016053.161460.10310@j8g2000cwa.googlegrou ps.com... > > I appreciate everyone's input. Think I'm gonna make a bushing at work > tomorrow night. I've been researching this all weekend, everything I > find lists the inner and outer bearings as the same. Gonna bore a > piece of pre-heat-treated 4130, tap the race into it, then turn the OD > about .002" over the hub bore before cutting it off and pressing it > into the hub. That should keep this thin-walled SOB from springing > out-of-round. > > Happy fourth, everyone. Y'all be safe... > |
Re: Dana 30 front wheel bearings
I'm not gonna modify the bearings, Jeff, simply make bushings to press into the front wheel hubs that are bored to press the bearing outer races into. Bushings made out of 4130 would actually make the hubs stronger, as the process of cold-drawing bar-stock produces steel that is inherently stronger than any part produced by the process of casting (like wheel hubs). By boring the bushing ID to size and tapping the bearing race into it before turning the bushing OD to size, the bearing race will keep the bushing from springing out-of-round before I get it pressed into the wheel hub. Bearing races are hardened to around 60 on the Rockwell scale, and they will NOT deform. (Hit one with a hammer lol... it'll shatter, but I promise it won't bend. Wear a face shield if you try this). I've been setting-up/programming CNC machining equipment to manufacture parts for the automotive, aircraft, defense industries and every industry you can think of for about 18 years. Latest project was getting a couple of Giddings and Lewis Horizontal Machining Centers (their HMC 170's) to machine Allison's new auto tranny cases for big rigs (tractor/trailors, cement mixers, etc). Allison seems quite happy with the cases they get from Walker Die Casting. And the HMC 170's are quite impressive. The tool magazines hold 100 tools (face mills, end mills, boring heads, drills, taps, reamers, etc.), they execute a tool change in less than 2 seconds, they have a 3,000 IPM rapid-traverse rate, they have 2 pallets that auto-change. Made a fixture on one that holds the tranny vertically, bell-housing down, do all the radial work on it. On the second pallet tranny mounts to the fixture via the (just machined) mounting pads locating on 2 dowell holes we just put in, do all the linear work on ths fixture (main-bearing bore, drive bearing bore, clutch ring grooves, seal bores, etc.). Allison has a tight tolerance from the centerline of the main bores to the pan mounting surface, so this is where I have the machine facing the pan mounting surface and drilling/tapping/reaming bunches of holes on the bottom. I mounted a 2-foot-long wire brush off a floor-cleaner in a boring-bar holder, machine swipes it over and inside the whole tranny-case last thing, does a good job of de-burring the whole thing. Allison folks were impressed lol. Been doin this a long time... |
Re: Dana 30 front wheel bearings
I'm not gonna modify the bearings, Jeff, simply make bushings to press into the front wheel hubs that are bored to press the bearing outer races into. Bushings made out of 4130 would actually make the hubs stronger, as the process of cold-drawing bar-stock produces steel that is inherently stronger than any part produced by the process of casting (like wheel hubs). By boring the bushing ID to size and tapping the bearing race into it before turning the bushing OD to size, the bearing race will keep the bushing from springing out-of-round before I get it pressed into the wheel hub. Bearing races are hardened to around 60 on the Rockwell scale, and they will NOT deform. (Hit one with a hammer lol... it'll shatter, but I promise it won't bend. Wear a face shield if you try this). I've been setting-up/programming CNC machining equipment to manufacture parts for the automotive, aircraft, defense industries and every industry you can think of for about 18 years. Latest project was getting a couple of Giddings and Lewis Horizontal Machining Centers (their HMC 170's) to machine Allison's new auto tranny cases for big rigs (tractor/trailors, cement mixers, etc). Allison seems quite happy with the cases they get from Walker Die Casting. And the HMC 170's are quite impressive. The tool magazines hold 100 tools (face mills, end mills, boring heads, drills, taps, reamers, etc.), they execute a tool change in less than 2 seconds, they have a 3,000 IPM rapid-traverse rate, they have 2 pallets that auto-change. Made a fixture on one that holds the tranny vertically, bell-housing down, do all the radial work on it. On the second pallet tranny mounts to the fixture via the (just machined) mounting pads locating on 2 dowell holes we just put in, do all the linear work on ths fixture (main-bearing bore, drive bearing bore, clutch ring grooves, seal bores, etc.). Allison has a tight tolerance from the centerline of the main bores to the pan mounting surface, so this is where I have the machine facing the pan mounting surface and drilling/tapping/reaming bunches of holes on the bottom. I mounted a 2-foot-long wire brush off a floor-cleaner in a boring-bar holder, machine swipes it over and inside the whole tranny-case last thing, does a good job of de-burring the whole thing. Allison folks were impressed lol. Been doin this a long time... |
Re: Dana 30 front wheel bearings
I'm not gonna modify the bearings, Jeff, simply make bushings to press into the front wheel hubs that are bored to press the bearing outer races into. Bushings made out of 4130 would actually make the hubs stronger, as the process of cold-drawing bar-stock produces steel that is inherently stronger than any part produced by the process of casting (like wheel hubs). By boring the bushing ID to size and tapping the bearing race into it before turning the bushing OD to size, the bearing race will keep the bushing from springing out-of-round before I get it pressed into the wheel hub. Bearing races are hardened to around 60 on the Rockwell scale, and they will NOT deform. (Hit one with a hammer lol... it'll shatter, but I promise it won't bend. Wear a face shield if you try this). I've been setting-up/programming CNC machining equipment to manufacture parts for the automotive, aircraft, defense industries and every industry you can think of for about 18 years. Latest project was getting a couple of Giddings and Lewis Horizontal Machining Centers (their HMC 170's) to machine Allison's new auto tranny cases for big rigs (tractor/trailors, cement mixers, etc). Allison seems quite happy with the cases they get from Walker Die Casting. And the HMC 170's are quite impressive. The tool magazines hold 100 tools (face mills, end mills, boring heads, drills, taps, reamers, etc.), they execute a tool change in less than 2 seconds, they have a 3,000 IPM rapid-traverse rate, they have 2 pallets that auto-change. Made a fixture on one that holds the tranny vertically, bell-housing down, do all the radial work on it. On the second pallet tranny mounts to the fixture via the (just machined) mounting pads locating on 2 dowell holes we just put in, do all the linear work on ths fixture (main-bearing bore, drive bearing bore, clutch ring grooves, seal bores, etc.). Allison has a tight tolerance from the centerline of the main bores to the pan mounting surface, so this is where I have the machine facing the pan mounting surface and drilling/tapping/reaming bunches of holes on the bottom. I mounted a 2-foot-long wire brush off a floor-cleaner in a boring-bar holder, machine swipes it over and inside the whole tranny-case last thing, does a good job of de-burring the whole thing. Allison folks were impressed lol. Been doin this a long time... |
Re: Dana 30 front wheel bearings
Okay then, but why can't you read the numbers stamped on the bearings you
have, and buy more stuff with the same numbers? "KayakBill" <kayakbill@bellsouth.net> wrote in message news:1152096850.961765.270650@a14g2000cwb.googlegr oups.com... > > I'm not gonna modify the bearings, Jeff, simply make bushings to press > into the front wheel hubs that are bored to press the bearing outer > races into. Bushings made out of 4130 would actually make the hubs > stronger, as the process of cold-drawing bar-stock produces steel that > is inherently stronger than any part produced by the process of > casting (like wheel hubs). > > By boring the bushing ID to size and tapping the bearing race into it > before turning the bushing OD to size, the bearing race will keep the > bushing from springing out-of-round before I get it pressed into the > wheel hub. Bearing races are hardened to around 60 on the Rockwell > scale, and they will NOT deform. (Hit one with a hammer lol... it'll > shatter, but I promise it won't bend. Wear a face shield if you try > this). > > I've been setting-up/programming CNC machining equipment to manufacture > parts for the automotive, aircraft, defense industries and every > industry you can think of for about 18 years. Latest project was > getting a couple of Giddings and Lewis Horizontal Machining Centers > (their HMC 170's) to machine Allison's new auto tranny cases for big > rigs (tractor/trailors, cement mixers, etc). Allison seems quite happy > with the cases they get from Walker Die Casting. And the HMC 170's are > quite impressive. The tool magazines hold 100 tools (face mills, end > mills, boring heads, drills, taps, reamers, etc.), they execute a tool > change in less than 2 seconds, they have a 3,000 IPM rapid-traverse > rate, they have 2 pallets that auto-change. Made a fixture on one that > holds the tranny vertically, bell-housing down, do all the radial work > on it. On the second pallet tranny mounts to the fixture via the (just > machined) mounting pads locating on 2 dowell holes we just put in, do > all the linear work on ths fixture (main-bearing bore, drive bearing > bore, clutch ring grooves, seal bores, etc.). Allison has a tight > tolerance from the centerline of the main bores to the pan mounting > surface, so this is where I have the machine facing the pan mounting > surface and drilling/tapping/reaming bunches of holes on the bottom. > > I mounted a 2-foot-long wire brush off a floor-cleaner in a boring-bar > holder, machine swipes it over and inside the whole tranny-case last > thing, does a good job of de-burring the whole thing. Allison folks > were impressed lol. > > Been doin this a long time... > |
Re: Dana 30 front wheel bearings
Okay then, but why can't you read the numbers stamped on the bearings you
have, and buy more stuff with the same numbers? "KayakBill" <kayakbill@bellsouth.net> wrote in message news:1152096850.961765.270650@a14g2000cwb.googlegr oups.com... > > I'm not gonna modify the bearings, Jeff, simply make bushings to press > into the front wheel hubs that are bored to press the bearing outer > races into. Bushings made out of 4130 would actually make the hubs > stronger, as the process of cold-drawing bar-stock produces steel that > is inherently stronger than any part produced by the process of > casting (like wheel hubs). > > By boring the bushing ID to size and tapping the bearing race into it > before turning the bushing OD to size, the bearing race will keep the > bushing from springing out-of-round before I get it pressed into the > wheel hub. Bearing races are hardened to around 60 on the Rockwell > scale, and they will NOT deform. (Hit one with a hammer lol... it'll > shatter, but I promise it won't bend. Wear a face shield if you try > this). > > I've been setting-up/programming CNC machining equipment to manufacture > parts for the automotive, aircraft, defense industries and every > industry you can think of for about 18 years. Latest project was > getting a couple of Giddings and Lewis Horizontal Machining Centers > (their HMC 170's) to machine Allison's new auto tranny cases for big > rigs (tractor/trailors, cement mixers, etc). Allison seems quite happy > with the cases they get from Walker Die Casting. And the HMC 170's are > quite impressive. The tool magazines hold 100 tools (face mills, end > mills, boring heads, drills, taps, reamers, etc.), they execute a tool > change in less than 2 seconds, they have a 3,000 IPM rapid-traverse > rate, they have 2 pallets that auto-change. Made a fixture on one that > holds the tranny vertically, bell-housing down, do all the radial work > on it. On the second pallet tranny mounts to the fixture via the (just > machined) mounting pads locating on 2 dowell holes we just put in, do > all the linear work on ths fixture (main-bearing bore, drive bearing > bore, clutch ring grooves, seal bores, etc.). Allison has a tight > tolerance from the centerline of the main bores to the pan mounting > surface, so this is where I have the machine facing the pan mounting > surface and drilling/tapping/reaming bunches of holes on the bottom. > > I mounted a 2-foot-long wire brush off a floor-cleaner in a boring-bar > holder, machine swipes it over and inside the whole tranny-case last > thing, does a good job of de-burring the whole thing. Allison folks > were impressed lol. > > Been doin this a long time... > |
Re: Dana 30 front wheel bearings
Okay then, but why can't you read the numbers stamped on the bearings you
have, and buy more stuff with the same numbers? "KayakBill" <kayakbill@bellsouth.net> wrote in message news:1152096850.961765.270650@a14g2000cwb.googlegr oups.com... > > I'm not gonna modify the bearings, Jeff, simply make bushings to press > into the front wheel hubs that are bored to press the bearing outer > races into. Bushings made out of 4130 would actually make the hubs > stronger, as the process of cold-drawing bar-stock produces steel that > is inherently stronger than any part produced by the process of > casting (like wheel hubs). > > By boring the bushing ID to size and tapping the bearing race into it > before turning the bushing OD to size, the bearing race will keep the > bushing from springing out-of-round before I get it pressed into the > wheel hub. Bearing races are hardened to around 60 on the Rockwell > scale, and they will NOT deform. (Hit one with a hammer lol... it'll > shatter, but I promise it won't bend. Wear a face shield if you try > this). > > I've been setting-up/programming CNC machining equipment to manufacture > parts for the automotive, aircraft, defense industries and every > industry you can think of for about 18 years. Latest project was > getting a couple of Giddings and Lewis Horizontal Machining Centers > (their HMC 170's) to machine Allison's new auto tranny cases for big > rigs (tractor/trailors, cement mixers, etc). Allison seems quite happy > with the cases they get from Walker Die Casting. And the HMC 170's are > quite impressive. The tool magazines hold 100 tools (face mills, end > mills, boring heads, drills, taps, reamers, etc.), they execute a tool > change in less than 2 seconds, they have a 3,000 IPM rapid-traverse > rate, they have 2 pallets that auto-change. Made a fixture on one that > holds the tranny vertically, bell-housing down, do all the radial work > on it. On the second pallet tranny mounts to the fixture via the (just > machined) mounting pads locating on 2 dowell holes we just put in, do > all the linear work on ths fixture (main-bearing bore, drive bearing > bore, clutch ring grooves, seal bores, etc.). Allison has a tight > tolerance from the centerline of the main bores to the pan mounting > surface, so this is where I have the machine facing the pan mounting > surface and drilling/tapping/reaming bunches of holes on the bottom. > > I mounted a 2-foot-long wire brush off a floor-cleaner in a boring-bar > holder, machine swipes it over and inside the whole tranny-case last > thing, does a good job of de-burring the whole thing. Allison folks > were impressed lol. > > Been doin this a long time... > |
Re: Dana 30 front wheel bearings
The numbers are barely legible, and I probably could if I could find a parts supplier that had a master listing for whatever brand bearings these are (only the SKU is stamped into the bearings, not the brand name). O'course, if/when I ever sold this thing, were the new owner ever to replace the front wheel bearings, they'd be going thru this whole thing all over again. i can understand why parts houses loose track of rarely used part numbers on a 33 year-old jeep. Modifying the wheel hubs to accept the bearings EVERYONE has listed is really not that big of a deal. I simply thought somebody might be able to point me to the right bearings and save me from sacrificing a lunch-hour working on a personal project... |
Re: Dana 30 front wheel bearings
The numbers are barely legible, and I probably could if I could find a parts supplier that had a master listing for whatever brand bearings these are (only the SKU is stamped into the bearings, not the brand name). O'course, if/when I ever sold this thing, were the new owner ever to replace the front wheel bearings, they'd be going thru this whole thing all over again. i can understand why parts houses loose track of rarely used part numbers on a 33 year-old jeep. Modifying the wheel hubs to accept the bearings EVERYONE has listed is really not that big of a deal. I simply thought somebody might be able to point me to the right bearings and save me from sacrificing a lunch-hour working on a personal project... |
Re: Dana 30 front wheel bearings
The numbers are barely legible, and I probably could if I could find a parts supplier that had a master listing for whatever brand bearings these are (only the SKU is stamped into the bearings, not the brand name). O'course, if/when I ever sold this thing, were the new owner ever to replace the front wheel bearings, they'd be going thru this whole thing all over again. i can understand why parts houses loose track of rarely used part numbers on a 33 year-old jeep. Modifying the wheel hubs to accept the bearings EVERYONE has listed is really not that big of a deal. I simply thought somebody might be able to point me to the right bearings and save me from sacrificing a lunch-hour working on a personal project... |
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