The Yamato DF-612 is a 216 L forced-air-circulation "fine oven" with high-accuracy temperature control to 260 °C and ±0.1 °C adjustment accuracy. The larger-chamber member of the DF/DH 412/612 series, the Yamato DF-612 circulates uniformly heated air in a horizontal flow pattern for precision uniformity across a bigger load, with full program operation (up to 99 steps / 99 patterns). It is a capital fine oven for higher-throughput precision heat treatment.
Key Specifications
| Spec | Value |
| Model (focus) | Yamato DF-612 (brochure model DF612) |
| Circulation method | Forced air circulation and ventilation |
| Operating temperature range | Room temp +15 °C to 260 °C |
| Temperature adjustment accuracy | ±0.1 °C (at 260 °C) |
| Temperature distribution accuracy | ±1.5 °C (at 260 °C) |
| Max temp. reaching time | ~40 min (reaches 260 °C at a 270 °C setting) |
| Temp control / setting | PID Z control / digital with ▲▼ keys |
| Display | Green 4-digit LED (reading), orange 5-digit LED (setting) |
| Operation functions | Fixed temperature, auto-start, auto-stop, program (max 99 steps / 99 patterns, repeat) |
| Additional functions | Variable air-flow, power/CO₂/heat monitoring, calibration offset, power-failure recovery, data backup |
| Sensor | Double K-thermocouple |
| Heater / control | Stainless pipe heater with fan / Triac zero-cross; 3.0 kW |
| Blower fan | Axial-flow fan (capacitor motor, 20 W) |
| Exhaust / cable port | Automatic exhaust damper I.D. 80 mm / cable port I.D. 33 mm (rear) |
| Earth leakage breaker | 20 A (rated current sensitivity 30 mA) |
| Internal dimensions (W×D×H) | 600 × 600 × 600 mm |
| External dimensions (W×D×H) | 1200 × 780 × 1000 mm |
| Chamber capacity | 216 L |
| Shelf load / support / pitch | ~30 kg/shelf / 9 steps / 60 mm |
| Power source | AC 220V, 17.5 A, single phase (no plug, round terminal) |
| Weight | ~156 kg |
| Included | 3 shelves / 6 brackets |
| Compatible accessories | Stand OP63 (415465) / OP66 with casters (415467); SS-wire shelf ODQ20 (211064, 30 kg); SS-punching shelf ODQ40 (211099); SS-mesh shelf ODT14 (212925); stacking support ODF48 (213700); sheath K-sensor ODT48 (212946) |
Application Profile
The 216 L DF-612 is built for precise, repeatable heat treatment and drying at higher throughput, larger batches of components for drying and curing, resin and coating cure schedules, and materials conditioning up to 260 °C. Forced air circulation in a horizontal flow pattern holds ±1.5 °C distribution at 260 °C across the bigger chamber, and the automatic exhaust damper allows quick venting and cooling between stages.
Why the Yamato DF-612 is a fine oven, not a drying oven
"Fine oven" denotes precision forced-convection heat treatment: the DF-612's ±0.1 °C adjustment accuracy and ±1.5 °C uniformity are far tighter than a gravity drying oven, and the 99-step programmer with variable air-flow lets a cure or conditioning profile be tuned and repeated exactly across a full load. Power-consumption and CO₂ monitoring support process documentation. Choose the DH-612 sibling instead when your process needs 360 °C. (See gravity-vs-forced-convection-oven.)
Frequently Asked Questions
What temperature range does the Yamato DF-612 reach? Room temperature +15 °C to 260 °C, with ±0.1 °C adjustment accuracy and ±1.5 °C distribution accuracy at 260 °C.
Is the DF-612 forced-air or natural convection? Forced air circulation and ventilation. A fan circulates heated air horizontally for high uniformity, unlike the gravity-convection DX/DVS ovens.
Is it programmable? Yes. It supports program operation up to 99 steps or 99 patterns with repeat, plus fixed-temperature, auto-start, and auto-stop modes.
What power supply does it need? Single-phase AC 220V, 17.5 A, supplied without a plug (round-terminal connection), hard-wiring to a suitable 220 V circuit is required.
How large is the chamber? 216 L (600 × 600 × 600 mm internal), with 9 shelf positions at 60 mm pitch and shelves rated ~30 kg each; three shelves ship as standard.
How is it different from the DF-412? Same 260 °C forced-air fine oven; the DF-612 has the larger 216 L chamber (vs 91 L) and a 3.0 kW heater (vs 2.1 kW).
Ordering & Configuration
quote-based. The DF-612 is a capital forced-convection fine oven sold through a quote. At quote we confirm the single-phase 220 V circuit and round-terminal connection (no plug supplied), your process temperature and program profile within 260 °C, shelving type and stand/caster options, and floor space for the 1200 × 780 × 1000 mm cabinet plus exhaust routing. Warranty terms are confirmed with the quote, and lead time is provided at quotation. Request a quote to configure the DF-612.
DF/DH 412/612 fine-oven series: DF-412 (91 L, 260 °C) / DF-612 (216 L, 260 °C, this unit) and DH-412 (91 L, 360 °C) / DH-612 (216 L, 360 °C). Pick DF for 260 °C work and DH for 360 °C; pick 412 for bench-scale 91 L and 612 for 216 L throughput. Step to the 3-phase DF/DH 832/1032 for large chambers or the DH-650Z for 500 °C.
