Yamato LT400A Laboratory Stirrer Digital Main Body Only 10~300 rpm Overview
The Yamato LT-400A digital laboratory stirrer is an overhead mixer built for high-viscosity samples, running from 10–300 rpm on a gearless direct-drive, 30 W DC brushless motor. Its speed-feedback control holds the set speed even as sample viscosity changes during a run, so mixing stays consistent from the start of a batch to the end.
Maximum torque is 0.9 N·m (9.0 kgf·cm). A 3-digit digital display reads out set speed while an LED torque/overload indicator shows loading at a glance, and overload stop, a current-limit circuit, and thermal motor protection safeguard both the drive and your sample. The ø10 mm chuck accepts standard Yamato stirring shafts. The main body ships with a ø10 × 500 mm stirring shaft, 4-blade propeller, and clamp; add a Yamato stand and support rod to complete a bench setup, or order the matching LT-400AA set that bundles the stand and rod.
How to Choose the Right LT Stirrer
Across the Yamato LT series, the model letter sets the balance between speed and torque — higher top speeds trade off maximum torque, so match the model to your sample:
- Sample viscosity: this LT-400A is rated for high-viscosity samples (0.9 N·m (9.0 kgf·cm) maximum torque).
- Speed range: 10–300 rpm — confirm your process rpm falls inside this band.
- Shaft & vessel: the ø10 mm chuck takes standard Yamato shafts; size the propeller to your vessel.
Specifications
| Specification | Detail |
|---|---|
| Voltage | 115V |
| Speed Range | 10–300 rpm |
| Maximum Torque | 0.9 N·m (9.0 kgf·cm) |
| Motor | DC brushless, 30 W |
| Sample Viscosity | High |
| Type | Digital overhead laboratory stirrer |
| Speed Control | Speed feedback control — maintains set speed despite viscosity change |
| Display | Digital 3-digit speed display with LED torque/overload indicator |
| Safety Devices | Overload stop; current-limit circuit and thermal motor protection |
| Drive | Gearless direct drive, ø10 mm shaft |
| Included Accessories | Stirring shaft (ø10 × 500 mm), 75 mm 4-blade propeller, clamp |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| LT-400A | EA | EA |
More in This Series
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View all Laboratory Stirrers →
Ordering
Authorized dealer, ships from USA inventory. Serving academic, government, and research laboratories nationwide.
Frequently Asked Questions
What sample viscosity is the LT-400A best suited to?
The LT-400A is rated for high-viscosity samples, delivering 0.9 N·m (9.0 kgf·cm) of maximum torque across a 10–300 rpm range. For markedly higher-viscosity work, choose a higher-torque LT model.
Does the stirrer keep a constant speed as my sample thickens?
Yes. Speed-feedback control continuously adjusts the motor to hold the set rpm even as viscosity rises during a run, and the 3-digit display plus LED torque indicator let you monitor loading.
What is included, and what do I need to add?
The main body ships with a ø10 × 500 mm stirring shaft, 4-blade propeller, and clamp. To run it on the bench, add a Yamato stand and support rod — or order the LT-400AA set, which bundles the stand and rod.
