How a train wheel is made – Sandvik Coromant
How a train wheel is made – Sandvik Coromant

Trains running mile after mile put
high demands on their wheels. Meeting their requirements on dimensional tolerances and
surface quality is essential, both as a matter of safety but also in terms of comfort for
the passenger. Producing finished wheels involves
a manufacturing chain including different forming
processes, metal cutting and testing. Blanks are heated in a rotary kiln
before compression forged. The centre is then punched out and
the profile is rollformed. A bending process gives the wheel its
final shape, and then the wheel rim is chilled in
water, thus hardening it. Finally, the wheel’s mechanical
properties are tested to ensure the wheel is ready for
further machining. To achieve required dimensions and
surface quality, the hub, web and rim on the wheel are
machined. Round inserts are combined with over
and under coolant for best performance and chip
evacuation. Non-destructive testing ensures the
wheel surface meets the requirements on quality and tolerances. Then it’s mounted on the axis,
installed on the train and ready for use. After a period on the tracks, wheels need re-turning. The train rolls into the machine
shop, where every flat spot,
flange deformation and crack is removed. Until the wheels are reset to their
former standard, ready for another cycle.

55 thoughts on “How a train wheel is made – Sandvik Coromant”

  1. EFormance Engineering says:

    Seems there was a typo in your copy, the wheels are not mounted on an axes but rather axle.

  2. ronnyh411 says:

    real life footage would've been great!

  3. tafazzul mahmood says:


  4. krap101 says:

    Why is this difficult? Because it's hard?

  5. Me Make Mula says:

    Not how u really make it untrue

  6. leo b says:

    Is it common practice to re-machine the wheel surface while still on the train or is this a new technology?

  7. Otto Stierlitz says:

    Animation?! Habt ihr keinen richtigen Film? Könnt ihr es in der Realität noch nicht?

  8. Fenix says:

    I'm sure/hope the wheels were secured to the axle a little better than they appeared to be at 01:47 – 01:53 ..and seemingly secured by x3 bolts!!!

    Should have shown the real/whole process. Good for youngsters I suppose.

  9. yashotkarsh mani tripathi says:

    which software you have used to make this video ?

  10. Obliterous says:

    CG is boring. Video of real wheel production would be better.

  11. Splendens Regan says:


  12. swati singh says:

    Thanks for this video, it's really nice
    wants to know more about wheels manufacturing company in Pune India
    Visit this site:-

  13. Henry Rollins says:

    "ship evacuation"?

  14. Christopher Huffman says:

    This is a great animation of the overview of how train wheels are manufactured. Although I feel it is necessary to point out that not all aspects of the wheel are machined such as the contours, usually only the outer edge where the flange and the tapered point contacts the rails is usually machined to spec as well as the ID that is press fit onto the axle. Its also worthy to point out that wheels on both locomotives and freight cars are turned fairly often as when the wheel is in tolerance and has a perfect tapered angle there is a significant less amount of friction between the rail and the wheel.

  15. Lawrence McLane says:

    Axis? I think you mean Axle.

  16. Tim Bo says:

    Very interesting. You don't have anything about the type of steel used. That would be good to know too.

  17. Beatles5 says:

    Inte mycket kvar av det svenska. Bara engelska för hela slanten.

  18. Bassotronics says:

    I have always found it interesting how small a train wheel flange is compared to how huge those trains are. All it takes is one inch of lift of the wheel for whatever reason to cause a major disaster. I'm beginning to think that flange climb is one of the main causes of derailments especially like I said before the flange being so short.

  19. Adrian Neils says:

    I've seen imperfections like rust out spots and flat spotting on rail cars. The wheel goes down the rails banging or grinding . Holes are uncommon, but I've seen some of those too. Steel can be an imperfect metal to forge.

  20. Reza Pratama says:

    so it's like pencil then, if it become "dull", you just "sharpen" it. Easy, long lasting, efficient!

  21. Pascal Vrigna says:

    Why 3D anim, why not the real pictures ?????

  22. Jack Belk says:

    I thought they made train wheels not cartoons!

  23. Erik Johansson says:

    Animated rubbish.

  24. Alex Paulsen says:

    That's right, don't show is the real footage, just CGI the crap out of it instead and use a robot for the voice over. So convincing!

  25. frankbergmanII says:

    Speaking of high demands, what kind of graphics processor and CAM software do i need to generate these simulations?

  26. Paul Fisher says:

    It must be expensive to get the endless white void to put the factory in

  27. Les Reed says:

    Mounted on the "axis"? And the crap digital voiceover? Bleaughhh…

  28. Sidney Pratt says:

    Thanks, good to know.

  29. robert retka says:

    Can I narrate a video on how women's lingerie is made?

  30. robert retka says:

    Nothing like computer animations to soften the nasty reality of real machining processes and other manufacturing means.

  31. Harold Reardon says:

    The wheels are pressed on the 'axle', not the axis. The bearing is pressed on also, not held on by three bolts.

  32. gary jonson says:

    Made In China.

  33. Ian Mangham says:

    Great wood saws Sandwick

  34. Ian Mangham says:

    Lmao, one person mentions cgi then the sheep follow.

  35. Mark Frame says:

    Choo choo

  36. panda44r says:

    Maglev don't need no stinking wheels :o)

  37. JD says:

    nice animation

  38. dublin innis says:

    before compression forged ……… really….. that is what forging is

    and you wonder why I drink….

  39. odeis5 says:

    Am I the only one who had to listen to her repeat the word kiln just because she pronounced it right. After countless "how it's made" videos where they hired a moron who says it killin every time this was just so nice to hear it properly spoken.

  40. Made in Russia says:

    Wheels are very important! If you were interested in how the freight trains are made – here's the video from Russian plant 😉

  41. Uninfinty says:

    2:24 that looks sexy

  42. scott left says:

    Roll bahn….so much better a word than…train.

  43. Władca Wymiaru says:

    Bending machine MUST be made from really tough steel! Why don't use it for rail wheels?

  44. Sweeptheleg ! says:

    No Michelins?

  45. manxman says:

    the bending process is called press-forging

  46. Sheldon Drake says:

    I think the animations were very well done

  47. Dipen Dhar says:

    Great video

  48. JW Skeptic says:

    Why am I watching this? I don't even own a train 😅

  49. Starfish Prime says:

    I just LOVE this company!

  50. Clément Fabry says:

    merci sandvik <3 !

  51. Sheng Han says:

    Short, precise and very informational.

  52. Shyamal Kumar Biswas says:

    Fake animation….. Watch real factory processes instead of imaginary animation

  53. Esteban We don’t need no stinking badges says:

    This totally sucks

Leave a Reply

Your email address will not be published. Required fields are marked *