Fluidized-bed sand coolers from General Kinematics, DISA, Küttner, GVF Impianti, and Palmer dominate the 2026 foundry cooling market, with direct evaporation and indirect water-cooled fin-tube variants sized for 5-70 TPH return-sand lines [S1][S2][S4][S5].
DirectIndustry lists 5 companies offering 7 foundry sand cooler models as of the 2026-09 snapshot, while the Metoree index tracks 15 active manufacturers worldwide, including Carrier Vibrating Equipment, General Kinematics, and Vijay Foundry Equipments [S1][S9]. Foundry buyers in 2026 specify sand coolers primarily to protect downstream moulding-line equipment from thermal shock and to keep return-sand moisture within a narrow band, typically 1.6-2.2% for clay-bound systems [S3].
What a foundry sand cooler actually does and where it sits in the line
A foundry sand cooler receives hot return sand from the knock-out station and drops its temperature plus rehomogenises moisture before the sand re-enters the mixing/moulding loop, with Küttner-style fluidized-bed designs using evaporation as the primary heat-removal mechanism [S3]. The standard arrangement is a vibrating conveyor channel with an air-permeable bottom, stationary exhaust hood, moistening device, fan, and controls; the sand is fluidized by medium-pressure air blown from below while temperature-controlled water sprays evaporate in contact with hot grains [S3]. Most designs rely on the absence of moving parts in contact with the sand, which is the key reason fluidized-bed units are specified over rotary drum alternatives for high-iron return-sand duty [S3][S4].
For a process engineer sizing a new installation, the cooler sits between the shakeout and the sand-mixer or storage hopper, and the upstream shakeout, screening, and magnetic-deposition steps directly determine how well the cooler performs; moist lumps that survive pre-conditioning cannot be cured downstream [S3]. Buyers comparing shakeout + cooler packages can refer to the shakeout machine spec map for automotive foundries for matched sizing on the upstream side, since the cooler's continuous throughput must track shakeout discharge variability.
Main cooler types compared on the four criteria that matter in 2026
Direct-evaporation fluidized-bed coolers from DISA, General Kinematics, and Küttner lead on throughput per square metre and on humidity-control precision, with Küttner's design holding moisture to 1.6-2.2% at ±0.2% accuracy [S1][S3]. Indirect water-cooled vibro coolers from Vijay Foundry and Akshay use SS304 fin tubes with continuous chilled-water circulation, which is preferred where direct water injection into hot sand is undesirable, e.g. when clay-bentonite activation must stay under tight control [S4][S5]. Palmer's UHT-Series cooler-classifier targets the upper extreme, taking sand from over 1000°F down to 120°F at rates up to 40 TPH in a single integrated unit that combines cooling with classification [S6]. Vulcan's MD Cooler uses heavy-duty finned tubes with water circulation to maximise cooling density per square metre of floor space, an option for foundries with constrained layouts [S7]. Inductotherm's ONDARCOOL family covers new- and reclaimed-sand duty with custom-engineered throughput sizing [S8].
Key decision factors a 2026 spec engineer weighs: (1) throughput range, typically 5-70 TPH per module with models like Vijay FVC-10VE through FVC-40VE spanning 10-40 TPH at 4000-5000 mm bed length; (2) inlet/outlet temperature, with the Qingdao Binhai Jincheng FTB holding ≤150°C sand inlet and a water-circulation demand of 50-150 m³/h across its 37-75 kW fan options; (3) moisture-control accuracy, where direct-evaporation units with Küttner-style control deliver ±0.2% and indirect fin-tube units add a stable thermal buffer; and (4) dust handling, where most Indian and European units ship cyclone plus dual collector as standard [S1][S4][S5].
Throughput and temperature ratings from current product lines
General Kinematics offers two cooling technologies under the same product umbrella: the Vibratory Fluid Bed Sand Cooler for evaporative cooling or drying, and the VIBRA-FIN™ indirect bulk-material cooler for heating, cooling, or drying free-flowing bulk material, both engineered with air-distribution decks sized to the application [S2]. The Qingdao Binhai Jincheng S86 fluidized-bed unit covers 15-120 m³/h with a snake-shaped conveying path driven by high-pressure air; the related FTB model specifies sand inlet ≤150°C, three fan power levels (37-55-75 kW), and water flow 50-150 m³/h, with outlet temperature a function of those settings [S1].
Vijay Foundry Equipments' FVC series delivers 10-40 TPH at bed widths from 650 mm to 1200 mm, with vibro-motor power scaling from 12 HP to 47 HP across the five standard models [S4]. Akshay Foundry Equipments extends the high end, advertising 5-70 TPH capacity with Italvibro or OLI vibrator motors and SS304 finned cooling tubes, plus an integrated cyclone and dual-collector dust train [S5]. Palmer Manufacturing's UHT-Series cooler-classifier is the outlier for high-temperature inlet, accepting over 1000°F (≈540°C) feed sand and discharging as low as 120°F (≈49°C) at up to 40 TPH in a single integrated cooler/air-classifier module [S6].
Selection criteria: who fluidized-bed sand coolers are for, and who should not buy one
Fluidized-bed sand coolers are the right specification for high-tonnage green-sand foundries running automated moulding lines, where stable moisture (±0.2%) and continuous on-line return-sand flow directly translate into mould-quality consistency and reduced bentonite consumption [S3][S4]. Plants handling clay-bound sand with high iron content, or with sand temperatures consistently above 150°C at the shakeout discharge, fit the direct-evaporation fluidized-bed architecture, with the bonus of dead-clay removal and active-clay control when the cyclone and dual-collector dust train is included [S3][S5]. For buyers comparing the broader construction machinery and equipment supply chain, fluidized-bed coolers are a niche within the foundry sub-segment, and total installed cost is dominated by the fan, ducting, and dust-collector package rather than the cooler vessel itself.
A fluidized-bed sand cooler is the wrong choice for very low throughput (under 3-5 TPH) applications where a simple rotary drum or ambient pile-cooling cycle is more economical, and for foundries that cannot install the upstream screening, sand centrifuge, and metal-deposition steps that the cooler assumes [S3]. Plants running chemically bonded no-bake or shell sand generally do not need a fluidized-bed cooler at all, because return-sand temperatures in those loops are far lower and moisture control is handled by attrition and classification; buyers in that space are better served by reclamation equipment and sand mixers rather than evaporation coolers. Plants with very high dust-emission constraints also need to budget for the cyclone and dust-extraction system specified as standard on most fluidized-bed units, because the negative-pressure envelope over the bed is what keeps fines in suspension and out of the foundry ventilation [S3][S4].
Standards, controls, and integration points that buyers should verify
Modern fluidized-bed coolers are delivered with frequency-controlled drives on both the vibrating bed and the fluidization fan, plus a humidity-control loop with final-moisture measurement at the cooler outlet; the cooler can be bypassed by reversing the feed belt, and integrated-hopper versions run continuously between 40-120% of rated output without shutdown [S3]. The cooling-water demand for indirect designs is non-trivial, with the FTB-class unit at 50-150 m³/h circulation, and buyers should confirm the chiller-plant capacity on the foundry side before specifying. Küttner's published process description specifies that maximum sand output and maximum design temperature are not assumed to occur simultaneously, so the cooler should be sized on average rating rather than peak rating, with the integrated hopper absorbing surge [S3].
For a fuller spec reference on adjacent equipment in the resin sand line and lamps and light fittings used at inspection stations, the cooled-sand delivery temperature is the binding interface: most Indian OEM units target a sand outlet near ambient (≈120°F / 49°C) for direct reuse in the mixer, while the UHT-Series takes inlet above 1000°F and still delivers a similar outlet, which only the integrated cooler-classifier architecture can sustain [S6]. When comparing long-term cost across vendors, the practical differentiators are wear-part life on the air-permeable deck, cyclone and dust-collector integration, and the responsiveness of the humidity-control loop, rather than the headline TPH figure, which on its own says little about moisture stability under variable shakeout discharge [S3][S4].
Supplier landscape snapshot and what to track next
The 2026 active supplier list clusters into three groups: large Western OEMs with global service footprints (General Kinematics, DISA, Küttner via GVF Impianti, Carrier Vibrating Equipment, Inductotherm, Vulcan, Palmer Manufacturing); Chinese OEM capacity led by Qingdao Binhai Jincheng Foundry Machinery covering the 15-120 m³/h range; and Indian OEM/Exporter capacity centred in Kolhapur, Maharashtra (Vijay, Akshay) targeting African and Gulf export markets with 5-70 TPH models [S1][S4][S5][S8][S9]. DirectIndustry's product index records 5 companies listing 7 sand cooler models, while the Metoree category index tracks 15 manufacturers globally, indicating that most 2026 procurement activity runs through a small set of well-known Western brands and a parallel Indian/Chinese supply base [S1][S9]. Buyers comparing the wider sand cooler reference set should treat the DirectIndustry and Metoree indexes as the primary cross-check, because the foundry segment is small enough that vendor churn is visible within a single procurement cycle.
Two signals worth tracking through the remainder of 2026: first, whether any Western OEM announces a successor to the legacy Küttner fluidized-bed platform, since the Giesserei Lexicon description still anchors the operating envelope at 150°C inlet and 1.6-2.2% moisture control, both of which are reachable but not exceeded by current offerings [S3]; second, how Indian OEMs (Vijay, Akshay) move on export-channel coverage into Gulf and African greenfield foundries, where their 5-70 TPH product spread and SS304 fin-tube construction are well-matched to the spec [S4][S5]. Buyers should request the FTB-equivalent inlet/outlet temperature, water-circulation flow, and humidity-control accuracy in writing on every 2026 quotation, since the published TPH number is the least useful figure for predicting downstream mould quality.