The Yamato LT-500AA is the complete-set configuration of the LT-500A overhead stirrer — the higher-power (65 W) LT-500A main body plus the stand, rod, stainless-steel shaft and 60 mm 4-blade propeller packaged ready to run. It is the same middle-viscosity overhead stirrer (15–600 rpm, 0.9 N·m / 9.0 kgf·cm) delivered as a turn-key rig rather than a bare main body.
Key Specifications
| SKU | LT-500AA |
| Type | Overhead (top-drive) laboratory stirrer — complete set |
| Application | Middle-viscosity samples |
| Speed range | 15–600 rpm |
| Rated torque | 1.0 N·m (10.0 kgf·cm) |
| Motor | DC brushless, B-type insulation, 30 W output |
| Rotation control | Feedback control |
| Panel | 4-digit digital speed, overload indication, torque indicator (20% per scale) |
| Chuck | SUS drill chuck for ø8 mm shaft |
| Safety | Current-limiting circuit, thermal protector (motor coil 90 °C), safety cover |
| Power source | Single phase 100–120V ±10%, 50/60 Hz, 400VA |
| External dimensions (main body) | W146 x D154 x H165 mm |
| Included | LT-500A main body, stand, rod, stainless-steel stirring shaft (ø8 x 500 mm), 60 mm 4-blade propeller, clamp holder, safety cover, chuck handle, operating manual, warranty card |
| Main-body-only SKU | LT-500A ($1,036) |
| List price | $2,100.00 |
Notes: figures follow the LT400A/500B manual (assigned source: 0.9 N·m, 65 W); the marketing brochure lists 1.0 N·m / 30 W — confirm with Yamato if load-bearing. Stirrer, shaft and 60 mm propeller are itemized in the manual; the stand/rod correspond to Yamato's Y-type rack — confirm the exact part in the set.
Application Profile
- Middle-viscosity mixing with headroom, turn-key — the 65 W LT-500 drive carries more sustained load than the 35 W LT-400 sets at the same speed band, mounted-ready with stand and rod.
- Overhead stirring of small-to-mid vessels — top-driven mixing where a magnetic stir bar cannot couple.
- Quiet-bench operation — noise-prevention design for shared labs.
Overhead vs magnetic — pick the LT-500AA when overhead drive is needed for middle-viscosity samples with more power headroom than the LT-400 sets; step to the LT-500BA (25–1200 rpm) for thinner samples at higher speed.
Design Architecture
The LT-500AA is the LT-500A drivetrain on a stand. A 65 W DC brushless motor turns a ø8 mm SUS drill chuck through feedback control that holds the set speed as viscosity changes mid-stir, delivering 0.9 N·m. Load and speed show on a 4-digit digital readout with overload indication and a 20%-graduated torque indicator.
Protection layers a current-limiting circuit, a thermal protector (90 °C coil cutoff — lower than the LT-400's 110 °C — with ~30 min recovery) and a safety cover over the rotating chuck. The included stand, rod, 500 mm stainless shaft and 60 mm 4-blade propeller complete the rig; the set runs on a 400VA supply.
Frequently Asked Questions
What samples and speeds does the LT-500AA handle? It is a middle-viscosity overhead stirrer with a 15–600 rpm speed range.
What comes in the complete set? The LT-500A main body, stand, rod, stainless-steel stirring shaft (ø8 x 500 mm), 60 mm 4-blade propeller, clamp holder, safety cover, chuck handle, operating manual, and warranty card.
How does the LT-500AA differ from the LT-500A? The LT-500AA is the turn-key, stand-mounted rig; the LT-500A is the bare main body only. Choose the LT-500AA when no stand already exists.
What motor and torque does it deliver? A 65 W DC brushless motor with feedback control that holds set speed as viscosity changes, delivering 0.9 N·m (per the manual; the brochure lists 1.0 N·m / 30 W — confirm with Yamato if load-bearing).
What power does it need? Single-phase 100–120V, 50/60 Hz, 400VA. There is no 220V variant in the source.
Ordering & Configuration
In the box: LT-500A main body, stand, rod, stainless-steel stirring shaft (ø8 x 500 mm), 60 mm 4-blade propeller, clamp holder, safety cover, chuck handle, operating manual and warranty card — a complete stand-mounted stirring rig.
Optional accessories: alternate propellers (40 mm, 75 mm, 100 mm two-blade, turbine/disc types), glass blade, narrow-port blades — all sold separately.
At $2,100.00 the LT-500AA is a direct add-to-cart complete set. Choose over the LT-500A main body ($1,036) when no stand exists. Supply is 100–120V only; no 220V variant in the source. Confirm propeller size against vessel geometry.
Warranty: one year from purchase per Yamato terms.
LT-500 sets: LT-500AA (15–600 rpm, this product) · LT-500BA (25–1200 rpm). Main bodies only: LT-500A / B. Lower-power siblings: LT-400 sets (35 W).
