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QDS SERIESSmall Premium Dual Chamber Hardening/Tempering FurnacesAPPLICATIONSThe QDS Series Dual Chamber Heat Treatingfurnaces feature a 2350°F (1285°C) high heatchamber for hardening and a 1250°F (675°C)recirculating oven for tempering. Theover/under configuration saves floor space.The hardening furnace is mounted on topwith the tempering oven below. Agitated andheated quench tanks are optional (See pages28 & 31). The furnaces achieve high precisionby featuring highly accurate controls, mercurycontactors for fast cycle times, two zonecontrol (top and bottom) on the hardeningfurnace, and very even spacing of elements.The tempering oven features a fan andrecirculation muffle for high uniformity. TheQDS 124 is our most popular dual chamberfurnace. The furnace chamber construction issimilar to the XLB Series.FEATURESSIMILAR TO QD & XLB SERIESThe QDS furnaces are similar to the QDSeries except that they are smaller and thebrick is 2-1/2” thick instead of 4-1/2” thick(like XLB Series on page 4). There are alsoelements in the top of the hardeningchamber. The fan is belt driven with a 1/6 hpmotor. The hardening furnace door is aspring loaded swing up vertical door.The spring holds the door tightlyclosed, counterbalances it whileopening, and holds it up while open.The hot face of the door is kept awayfrom the operator. It has most of thesame options as the QD Series.HIGH TEMPERATURE UNIFORMITYThe hardening furnace is uniform to within+/-20°F(+/-11°C) above 1500°F (815°C). Thetempering oven is uniform to within +/-10°F(+/-5.5°C) above 300°F (150°C).QD 29Small Economical Dual Chamber Hardening/Tempering FurnaceA QDS 124 -our mostpopular dualchamber heattreatingfurnace.APPLICATIONSThe QD 29 Dual Chamber Heat Treatingfurnace features a 2275°F (1245°C) high heatchamber for hardening and a 1250°F (675°C)recirculating oven for tempering. Theover/under configuration saves floor space.The hardening furnace is mounted on topwith the tempering oven below. A roll awayquench tank is optional. Controls are digital.The tempering oven features a fan andrecirculation muffle for high uniformity. Thisis the most economical dual chamber furnacein the QD line. It is a good basic all purposeheat treating system. The furnace chamberconstruction is similar to the HB Series.FEATURESSIDE MOUNTED ELEMENTSThe QD 29 furnace has side mountedelements, 2-1/2” brick with 2” back upinsulation.The fan is belt driven with a 1/6hp motor. The hardening furnace door isa spring loaded swing up vertical door.The spring holds the doortightly closed, counterbalancesit while opening, and holds it upwhile open. The hot face of thedoor is kept away from theoperator. It has most of thesame options as the QD Series.GOOD TEMPERATURE UNIFORMITYThe hardening furnace is uniform to within+/-25°F (+/-14°C) above 1500°F (815°C).Thetempering oven is uniform to within +/-10°F(+/-5.5°C) above 300°F (150°C).A simple rollaway quenchtank fitsunder theQD 29.QDS & QD29 SPECIFICATIONSHARDEN CHAMBER HARDEN CHAMBER TEMPER CHAMBERACTUAL UNIFORM INSIDE RECIRC OUTSIDE HARDEN TEMPER MAX APROXMODEL INSIDE DIMENSIONS INSIDE DIMENSIONS MUFFLE DIMENSIONS DIMENSIONS CHAMBER CHAMBER LOAD SHIPNUMBER IW IH ID W H D IW IH ID OW OH OD KW KW WEIGHT WEIGHTQDS 124 13 12 25 10 10 20 10 12 22 55 78 56 9.8 8.0 125 1300QDS 126 13 12 37 10 10 32 10 12 34 55 78 68 13.0 12.0 175 1600QD 29 12 8 24 9 6 20 10 8 20 55 70 56 8.0 8.0 100 1200Dimensions are in inches. Weight is in pounds. Standard voltages supplied are 480, 240, 208, 380 and 575. Single phase is normal; 3 phase is available although phaseswill be unbalanced. Inside tempering chamber dimensions are also working dimensions for that chamber.800.459.0750Page 11