SNCB Type 1

{{Short description|Class of 4-6-2 locomotives}}

{{no footnotes|date=August 2016}}

{{Infobox locomotive

| name = NMBS/SNCB Type 1

| powertype = Steam

| image = Nmbstype1.jpg

| alt = SNCB Type 1

| caption = NMBS/SNCB Type 1

| designer =

| builder = Société Anonyme la Métallurgique, Tubize

| ordernumber =

| serialnumber =

| buildmodel =

| builddate = 1935 - 1938

| totalproduction = 35

| rebuilder =

| rebuilddate =

| numberrebuilt =

| whytetype = 4-6-2

| uicclass = 2′C1′ h4

| gauge = {{track gauge|sg|allk=on}}

| leadingdiameter =

| driverdiameter = {{convert|1980|mm|in|2|abbr=on}}

| trailingdiameter =

| minimumcurve =

| wheelbase =

| length =

| width =

| height =

| axleload =

| weightondrivers =

| locoweight = {{convert|124|t|disp=br()}}

| tenderweight = {{convert|86|t|1|disp=br()}}

| locotenderweight =

| tendertype =

| fueltype =

| fuelcap =

| watercap = {{convert|48000|L|disp=br()}}

| tendercap =

| sandcap =

| boiler =

| boilerpressure = {{convert|18|atm|MPa psi|sigfig=3|abbr=on}}

| feedwaterheater = ACFI

| firearea = {{convert|5.00|m2|sqft|abbr=on}}

| tubearea =

| fluearea =

| tubesandflues =

| fireboxarea =

| totalsurface = {{convert|234.8|m2|sqft|abbr=on}}

| superheatertype =

| superheaterarea = {{convert|111.7|m2|sqft|abbr=on}}

| cylindercount = Four

| cylindersize = {{convert|420|x|720|mm|in|2|abbr=on|disp=br()}}

| valvegear =

| valvetype =

| valvetravel =

| valvelap =

| valvelead =

| transmission =

| maxspeed =

| poweroutput =

| tractiveeffort = {{convert|198.9|kN|lbf|-1|abbr=on}}

| factorofadhesion =

| trainheating =

| locobrakes =

| locobrakeforce =

| trainbrakes =

| safety =

| operator = NMBS/SNCB

| operatorclass = Type 1

| powerclass =

| numinclass =

| fleetnumbers = 101 - 135

1.001 – 1.035

| officialname =

| nicknames =

| axleloadclass =

| locale =

| deliverydate =

| firstrundate =

| lastrundate =

| withdrawndate = 1962

| preservedunits = One: 1.002

| restoredate =

| scrapdate =

| currentowner =

| disposition = 1 preserved, 34 scrapped

| notes =

}}

The NMBS/SNCB Type 1 was a class of {{Whyte|4-6-2}} steam locomotives built in 1935 and 1938 for working heavy express passenger trains operated by the National Railway Company of Belgium (NMBS/SNCB).