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  1. #1
    Join Date
    Jul 2010
    Location
    Brisbane
    Posts
    143

    Default Help with jointer rebuild

    Hi.
    I have a 6" jointer/planer that I am rebuilding...Recently I measured the bearings and was quoted $18 ea..When I arrived at the bearing place, with the actual bearings in hand, I was told that they were an angular contact type bearing.. a sort of cross between a regular and a thrust bearing..(LJT 7/8) and was shocked by the price ..$68 each.!!
    If anyone else has rebuilt a planer, what bearings did they use... normal deep groove, or these hybrid types.
    Ken.

  2. #2
    Join Date
    Sep 2009
    Location
    Newcastle
    Posts
    341

    Default

    You should be able to get them cheaper online.

    Do you have the bearing numbers?

  3. #3
    Join Date
    Sep 2010
    Location
    Lebrina
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    1,910

    Default

    If I am correct in my assumptions, that would be an LJT 7/8" bearing. Imperial bearings are generally more expensive than metric bearings. There seem to be a few floating around Ebay at a lower price, but the freight component brings them up to pretty close to the same as what you will pay for the locally sourced version. I know every dollar counts, but those bearings will do a lot of work in their lifetime, so it probably pays to bite the bullet and stick with the correct bearings.

  4. #4
    Join Date
    Jul 2016
    Location
    Melbourne
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    35
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    1,522

    Default

    Angular contact bearings tend to be significantly more costly, but allow for a proper directional preload which a deep groove does not generally deal well with. A real answer to this is going to depend on how the bearings are preloaded, were there spacers between the inner or outer bearing races?

    My advice would be to put in what you take out unless you want to redesign something.

    Sent from my SM-G973F using Tapatalk

  5. #5
    Join Date
    Aug 2008
    Location
    Melbourne
    Age
    34
    Posts
    1,075

    Default

    I can't say I understand why you'd need angular contact bearings in a jointer, there's no axial load at all (unless something's gone very wrong) and there was no preload on either the jointer or thicknesser bearings at my old work; we upgraded to helical heads on both so I have had both machines in pieces.

    I don't remember what bearings we used for the rebuilds, but, if anything, I'd be going for a standard deep-groove on the drive end and a self-aligning bearing on the other end to allow for any misalignment of the housings.

  6. #6
    Join Date
    Jul 2019
    Location
    Newcastle, NSW Aus
    Posts
    9

    Default

    Recently had my Hammer A-31 jointer/planer apart and replaced both bearings when installing the new head. Both felder supplied deep-grooved @$14.32 ex GST each.

  7. #7
    Join Date
    Jul 2011
    Location
    Berowra Waters
    Posts
    149

    Default

    Just use normal deep grooved ones, I’ve done a few over the years amd they are all still running fine as far as I know.

  8. #8
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

    Default

    Quote Originally Posted by Bernmc View Post
    Recently had my Hammer A-31 jointer/planer apart and replaced both bearings when installing the new head. Both felder supplied deep-grooved @$14.32 ex GST each.
    Hi Bernmc

    Welcome to the MetalWork forums


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  9. #9
    Join Date
    Dec 2010
    Location
    Syd
    Posts
    492

    Default

    Haven't really tackled the jointer here, as still fixing broken bits on a few hundred kilo of toppled over thicknesser. The bearings ordered here were 6202/03 for the jointer, which Mr Google tells me are deep groove.

    Imperial bearing suggests it's a fair age - old Wadkin(?) - probably ebay and lots of time for NOS, if you were trying to get them cheap(er). We've been using Statewide for bearings recently, maybe they're worth a shot if any branches up there, but for a special, doubt there's going to be huge variances!

  10. #10
    Join Date
    Jul 2010
    Location
    Brisbane
    Posts
    143

    Default

    Quote Originally Posted by caskwarrior View Post
    A real answer to this is going to depend on how the bearings are preloaded, were there spacers between the inner or outer bearing races?

    My advice would be to put in what you take out unless you want to redesign something.
    No preload.. they sit in housings on either side of the cutter head... in fact they (to me) were installed incorrectly.. the thrust side of the bearing was facing inwards.
    I always put back in the same as what I remove.. but we dont know if these were factory fitted.
    I also agree with elanjacobs... regarding the lack of axial load.
    BTW.. it's a Aussie made ? Pioneer... cannot find any reference to them at all !

  11. #11
    Join Date
    Jul 2011
    Location
    Berowra Waters
    Posts
    149

    Default

    Quote Originally Posted by kenny_10 View Post
    No preload.. they sit in housings on either side of the cutter head... in fact they (to me) were installed incorrectly.. the thrust side of the bearing was facing inwards.
    I always put back in the same as what I remove.. but we dont know if these were factory fitted.
    I also agree with elanjacobs... regarding the lack of axial load.
    BTW.. it's a Aussie made ? Pioneer... cannot find any reference to them at all !
    Did it look like this ? 85566DD9-9DFB-4B2D-8B27-E5408E55190A.jpeg
    We had this planer for 50 years, changed the bearings once from memory, it was sn absolute beauty of a machine, nice long bed and good adjustments. I sold it recently as it was getting too small for the work I’m doing now. You’ll get good service out of it I’m sure.

  12. #12
    Join Date
    Jul 2016
    Location
    Melbourne
    Age
    35
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    Default

    If there was no preload then yeah deep grooves will be fine.

    Sent from my SM-G973F using Tapatalk

  13. #13
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    4,779

    Default

    Some time back I was gifted a Gilbros saw bench/planer combination. I replaced the bearings in the planer head and from memory they were nothing special. I bought good quality japanese bearings in it for next to nothing from an eBay store.

    They were imperial.

    Simon

    Sent from my SM-G970F using Tapatalk
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

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