Pinch roller size/alternative for WM-503

Discussion in 'Tech talk' started by Rossoe, Jan 18, 2026.

  1. Rossoe

    Rossoe Member

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    I'd appreciate any help regarding alternative pinch rollers that would fit the WM-503? as I can't find a match on https://fixyouraudio.com/
    I'm assuming it might be similar to WM-501/WM-504 rollers? but they don't have that on fixyouraudio either.

    upload_2026-1-18_19-50-11.png

    upload_2026-1-18_19-51-3.png
     
  2. Stereo

    Stereo New Member

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    If you dismantle and measure the pinch rollers with a caliper, I.e the outer diameter, width and inner bore, you’ll have the exact specs you need to compare with generic parts on marketplaces like AliExpress. I had luck there finding a suitable replacement for a WM-40 pinch roller.
     
  3. Rossoe

    Rossoe Member

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    Thanks, unfortunately I don't have the WM-503 walkman in hand yet, it's still at Buyee. But I did open up my WM-501 which looks like it has identical mechanics inside. and measuring those pinch rollers came up with:
    7(D) x 5.5(H) x 1mm

    I saw some on aliexpress going for cheap price
    https://www.aliexpress.com/item/100...c_item_bridge_pc_main__UBlNeca__1769015803837
    upload_2026-1-22_19-20-52.png

    But given some of the comments I thought I'd avoid for now.
    upload_2026-1-22_19-19-34.png
    upload_2026-1-22_19-19-40.png

    Looking on ebay I spotted 2 sellers selling pinch rollers under the model WM-F501

    https://www.ebay.com/itm/125756456667
    upload_2026-1-22_19-20-23.png
    https://www.ebay.co.uk/itm/315191145064
    upload_2026-1-22_19-21-15.png

    So I asked the second seller for dimensions and he came back with
    "diameter is 7mm, the rubber width is 4.8mm, and the total height is 6.4mm."

    They seem to be reduced in height 5.5mm vs 4.8mm - but I've bought a couple to try out.

    I'll let you how they fit, I've not pulled the rollers from an old WM-501/503 before so I hope it's not too awkward!
     

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    Last edited: Jan 22, 2026
  4. Valentin

    Valentin Well-Known Member

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    For WM-100/200/500 series you will need the ones at 8.34$ that has the hub sleeve only on one side not on both.

    The other can be modified to fit these series also by cutting/sanding one side of the sleeve, but in reality those are for some early Panasonic RQ-JA series.
    That's what the one with 4-star review is trying to say. Rubber dimensions are the same on both types, it's just that extra sleeve that on one it needs to be trimmed.
     
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  5. radiorich

    radiorich Active Member

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    Hello guys,
    Valentin is correct because I know I have one of those Panasonic RQ-JA series sets that use that one.
    Sincerely Richard
     
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