Midland Railway 2511 Class

{{Use dmy dates|date=April 2022}}

{{Infobox locomotive

| name = Midland Railway 2511 class

| powertype = Steam

| image = American engineer and railroad journal (1893) (14756861561).jpg

| alt =

| caption = Works Photograph of number 2512

| designer =

| builder = Schenectady Locomotive Works

| ordernumber =

| serialnumber = 5037–5046

| buildmodel =

| builddate = 1899

| totalproduction = 10

| whytetype = 2-6-0

| uicclass = 1′C n2

| gauge = {{RailGauge|ussg}}

| leadingdiameter = {{Convert|3|ft|0|in|mm|0|abbr=on}}

| driverdiameter = {{convert|5|ft|0|in|mm|0|abbr=on}}

| minimumcurve =

| wheelbase =

| length = over buffers: {{convert|51|ft|11+1/4|in|m|2|abbr=on}}

| width =

| height =

| axleload = {{TonCwt to t|14|4}}

| weightondrivers = {{TonCwt to t|41|1}}

| locoweight = {{TonCwt to t|49|15.5}}

| tenderweight = {{TonCwt to t|37|0}}

| locotenderweight =

| tendertype = Three-axle

| fueltype = Coal

| fuelcap =

| watercap = {{convert|3250|impgal|abbr=on}}

| tendercap =

| sandcap =

| boiler =

| boilerpressure = {{convert|160|lbf/in2|MPa|2|abbr=on}}

| feedwaterheater =

| firearea =

| tubearea =

| fluearea =

| tubesandflues =

| fireboxarea =

| totalsurface =

| superheatertype =

| superheaterarea =

| cylindercount = Two, outside

| cylindersize = {{convert|18|x|24|in|mm|0|abbr=on}}

| valvegear = Stephenson, inside

| valvetype = Slide valves

| valvetravel =

| valvelap =

| valvelead =

| transmission =

| maxspeed =

| poweroutput =

| tractiveeffort = {{convert|17626|lbf|kN|2|abbr=on}}

| factorofadhesion =

| trainheating =

| locobrakes =

| locobrakeforce =

| trainbrakes =

| safety =

| operator = Midland Railway

| operatorclass = 2511

| powerclass =

| numinclass =

| fleetnumbers = New: 2511–2520,
1907: 2230–2239

| officialname =

| nicknames =

| axleloadclass =

| locale =

| deliverydate = 1899

| firstrundate =

| lastrundate =

| withdrawndate = 1912 – 1915

| preservedunits =

| restoredate =

| scrapdate =

| currentowner =

| disposition = All scrapped

}}

The Midland Railway 2511 Class was a class of 2-6-0 steam locomotives built by the Schenectady Locomotive Works in the United States, as a supplemental order to the 2501 Class built by Baldwin that same year. As with that class, the Midland had turned to American locomotive builders, as their own Derby Works had reached capacity, and was unable to produce additional engines at the time, and many British locomotive builders were recovering from an 1897-1898 labor dispute over working hours.