Hardinge HLV-B spindle bearing sizes
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  1. #1
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    Default Hardinge HLV-B spindle bearing sizes

    Recently I purchased an HLV-B. There was nothing obviously wrong with it other than normal wear and the price was fair. I only have 240 single phase available so I decided to run the 440v motor with an A-B Powerflex 70 VFD pegged at 60hz connected to a 2:1 isolation transformer and (mostly) completed that retrofit over the weekend.

    Now that I have been able to make some parts, there are some concerning noises that seem to be coming from the spindle bearings and I am not able to produce fine surface finishes that I am used to seeing on Hardinge lathes. There is no detectable runout on the exterior of the spindle and the normal 3 lobed wear pattern on the inside. There is about 0.0008" of end play.

    1. My headstock is stamped HLV-B 336-3. Does this fall into the "group 124 to 399" that apparently does not have a quill type spindle? It appears match the diagram shown here: https://www.csparks.com/hardinge/Manual/Page18-19.jpg

    2. Does anyone know what bearings I should use? I found this thread listing HLV-BK bearing sizes:
    Hardinge HLV-BK spindle bearing numbers
    It lists the angular contact pair as 18mm wide x 55mm ID x90mm OD and the single rear bearing as 16mm wide x 50mm ID x 80mm OD. There is a pair of NSK 7011CTRDULP4Y bearings on Ebay that should work for the front if that is the correct size. For the rear bearing, will just about any sealed bearing that fits work, such as a 6010-2rs? This setup seems similar to the bridgeport spindle setup and Hardinge sent me a low quality bearing when I ordered a replacement upper bearing a few months ago.

  2. #2
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    I do not have anything to offer on the bearing size of your machine. I see the 9 inch machines and my Hardinge mill with 5C spindles have a smaller bearing. My HLV-H, GT, HXL, and AHC all use the larger 110 OD bearing. Over the years Hardinge has supplied and used different brands of bearings for their lathes (Barden, Fafnir, and now NSK). I do not think they will sell you a bad bearing. I would just call them and ask they should know which one goes with your serial number.

  3. #3
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    I remember when I was pondering a purchase of a Hardinge that at the time it seemed quite reasonable to have the spindle done, which would have been at the factory or probably some specialists. IIRC the taper was ground after assembly, but my memory could be wrong.

  4. #4
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    I've got an early model HLV-B with the spindle apart and the bearings in sealed bags. It's definitely not a cartridge type spindle.

    I'm away from the shop now but can look at them before this weekend and tell you the dimensions and bearing numbers as well as the lathe SN. If you don't hear back before Saturday, PM me.
    Jim

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    Quote Originally Posted by amklein View Post
    Recently I purchased an HLV-B. There was nothing obviously wrong with it other than normal wear and the price was fair. I only have 240 single phase available so I decided to run the 440v motor with an A-B Powerflex 70 VFD pegged at 60hz connected to a 2:1 isolation transformer and (mostly) completed that retrofit over the weekend.

    Now that I have been able to make some parts, there are some concerning noises that seem to be coming from the spindle bearings and I am not able to produce fine surface finishes that I am used to seeing on Hardinge lathes. There is no detectable runout on the exterior of the spindle and the normal 3 lobed wear pattern on the inside. There is about 0.0008" of end play.

    1. My headstock is stamped HLV-B 336-3. Does this fall into the "group 124 to 399" that apparently does not have a quill type spindle? It appears match the diagram shown here: https://www.csparks.com/hardinge/Manual/Page18-19.jpg

    2. Does anyone know what bearings I should use? I found this thread listing HLV-BK bearing sizes:
    Hardinge HLV-BK spindle bearing numbers
    It lists the angular contact pair as 18mm wide x 55mm ID x90mm OD and the single rear bearing as 16mm wide x 50mm ID x 80mm OD. There is a pair of NSK 7011CTRDULP4Y bearings on Ebay that should work for the front if that is the correct size. For the rear bearing, will just about any sealed bearing that fits work, such as a 6010-2rs? This setup seems similar to the bridgeport spindle setup and Hardinge sent me a low quality bearing when I ordered a replacement upper bearing a few months ago.

    I have a UK HLV with the same spindle arrangement as in that link. Mine does use 7011 bearings (I bought FAG bearings B7011-c-t-p4s-ul) and I did use a standard 6010 for the tail end.

  6. #6
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    These are OEM supplied spindle bearings from HLV-B 310-3. Pictures show bearing numbers. Inboard bearing dimensions, each: 18x 55x90. Outboard: 16x50x80.0404191208.jpg04041912091.jpg0404191209a1.jpg
    Jim


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