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.
