GWR 645 Class

GWR 645 Class

The GWR 645 Class was a class of 0-6-0 saddle tank locomotives constructed by Joseph Armstrong at the Wolverhampton railway works of the Great Western Railway. Thirty were constructed between 1872-3. In essence they were saddle tank versions of his GWR 633 Class of 1871.

When built, they had 4' 6"driving wheels (later 4' 7½" due to thicker tyres) and 16",16½" or 17" x 24" cylinders. Half cabs were added a few years after construction. Later on these locomotives were rebuilt with Belpaire fireboxes and larger pannier tanks from 1918 onwards extending over the smokebox and the 17" diameter cylinders were standardised. None has survived into preservation.

ee also

* Locomotives of the Great Western Railway
* GWR 0-6-0PT


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