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.
