| 21. | The leading and trailing wheels were fitted with roller bearings.
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| 22. | If anything, the inside of the wrench looks exactly like a needle roller bearing.
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| 23. | Axle to spring connection was again with fitted roller bearings.
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| 24. | Ball and roller bearings also began being used in machinery.
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| 25. | The bogies were of the G�rlitz III type, the wheelsets ran on roller bearings.
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| 26. | It featured needle roller bearings at the base and knuckle.
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| 27. | Roller bearings on the new trucks alleviated the overheating problem.
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| 28. | The fuel was used to cool rear roller bearing, which also preheated the fuel.
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| 29. | The propellor shaft is now provided with needle-roller bearings.
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| 30. | The other sixteen were built as the Pmr class with roller bearings on all axles.
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