| Hobbing a single helical gear (Northern Tool Gear) - the hob is situated above the operator's left thumb |
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| Hobbing a double helical gear (Gear Works) |
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| A double helical high speed gear on a 5.5 m hobbing machine (John Brown, Clydebank) |
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| A hob (cutter) for generating gear teeth (Dathan) |
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| Industrial gearbox (David Brown) - the oil spray head is located just to right of nearest pinion |
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| Gearbox for coal pulveriser (Gear Works) |
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| A selection of small gears (Kao Fu Gears) |
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| Spiral bevel gears (Amarillo) |
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| Gear for cement industry (Machinefabriek P van der Wagen & Zn) |
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Copyright 1999-2001 Douglas Wright,
doug@mech.uwa.edu.au