The Yamato DF-412 is a 91 L forced-air-circulation "fine oven" with high-accuracy temperature control to 260 °C and ±0.1 °C adjustment accuracy. As a forced-convection oven, the Yamato DF-412 circulates uniformly heated air in a horizontal flow pattern for tight uniformity that gravity ovens cannot match, and it adds full program operation (up to 99 steps / 99 patterns). It is the compact member of the DF/DH 412/612 fine-oven series.
Key Specifications
| Spec | Value |
| Model (focus) | Yamato DF-412 (brochure model DF412) |
| 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; 2.1 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 | 15 A (rated current sensitivity 30 mA) |
| Internal dimensions (W×D×H) | 450 × 450 × 450 mm |
| External dimensions (W×D×H) | 1050 × 630 × 850 mm |
| Chamber capacity | 91 L |
| Shelf load / support / pitch | ~30 kg/shelf / 9 steps / 45 mm |
| Power source | AC 220V, 12.5 A, single phase (no plug, round terminal) |
| Weight | ~112 kg |
| Included | 2 shelves / 4 brackets |
| Compatible accessories | Stand OP43 (415464) / OP46 with casters (415466); SS-wire shelf ODQ10 (211063, 30 kg); SS-punching shelf ODQ30 (211098); SS-mesh shelf ODT12 (212924); stacking support ODF48 (213700); sheath K-sensor ODT48 (212946) |
Application Profile
The 91 L DF-412 is built for precise, repeatable heat treatment and drying where uniformity and program control matter, component drying and curing, resin and coating cure schedules, materials conditioning, and any process needing a tightly held setpoint up to 260 °C. Forced air circulation in a horizontal flow pattern gives ±1.5 °C distribution at 260 °C, and the automatic exhaust damper allows quick venting and cooling of the chamber between stages.
Why the Yamato DF-412 is a fine oven, not a drying oven
"Fine oven" denotes precision forced-convection heat treatment: the DF-412's ±0.1 °C adjustment accuracy and ±1.5 °C uniformity are an order of magnitude 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. Power-consumption and CO₂ monitoring support process documentation. Choose the DH-412 sibling instead when your process needs 360 °C. (See gravity-vs-forced-convection-oven.)
Frequently Asked Questions
What temperature range does the Yamato DF-412 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-412 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, 12.5 A, supplied without a plug (round-terminal connection), hard-wiring to a suitable 220 V circuit is required.
How large is the chamber? 91 L (450 × 450 × 450 mm internal), with 9 shelf positions at 45 mm pitch and shelves rated ~30 kg each.
How is it different from the DH-412? Same 91 L forced-air fine oven; the DF-412 tops out at 260 °C while the DH-412 reaches 360 °C (with a higher-capacity heater).
Ordering & Configuration
quote-based. The DF-412 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 1050 × 630 × 850 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-412.
DF/DH 412/612 fine-oven series: DF-412 (91 L, 260 °C, this unit) / DF-612 (216 L, 260 °C) 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.
