Lr-500B Set Main Body, Stand, Rod, Stainless Steel Shaft And 75 Mm 4-Blade Propeller Overview
The LR500B Set from Yamato Scientific is a digital overhead laboratory stirrer rated for a 100–1000 rpm speed range, supplied as a complete configuration through LabSupplies.com, authorized dealer. Its DC brushless motor delivers high torque for medium-viscosity samples while a digital tachometer confirms the exact set speed.
A gearless direct-drive system turns the ø10 mm stainless-steel shaft, cutting noise and lowering maintenance. Brushless construction removes spark-prone brushes and eliminates brush replacement. Revolution feedback control holds the set rate as load shifts, and an LED torque indicator shows the load on the stirring shaft in real time.
Each set arrives with main body, stand, rod, stainless-steel shaft, 75 mm 4-blade propeller, and clamp. Built in Japan, the unit ships at roughly 30 lbs with a 24 × 18 × 18 in footprint. Manufacturing is backed by ISO 9001:2015 and ISO 14001:2015 certifications.
Key Features
- DC brushless motor: 100 W direct-drive design runs spark-free with no brushes to replace.
- Speed feedback control: maintains the set rpm despite viscosity or load changes across the 100–1000 rpm range.
- High torque: 0.98 N·m (10 kgf·cm) output handles medium- to high-viscosity solutions.
- Digital readout: 3-digit speed display with an LED torque and overload indicator.
- Overload protection: an overload lamp lights and the motor stops automatically when the maximum load is exceeded.
- Complete set: main body, stand, rod, ø10 × 500 mm stainless-steel shaft, 75 mm 4-blade propeller, and clamp.
How to Choose the Right Stirrer
Selecting an overhead stirrer comes down to matching motor output, control type, and accessories to your sample chemistry. Use the criteria below to confirm the LR500B fits your protocol.
- Speed range: a 100–1000 rpm window suits medium-viscosity mixing; verify your application falls inside it.
- Torque: 0.98 N·m supports thicker solutions where low-torque units stall.
- Control type: digital speed feedback holds rpm steady, important for reproducible batches.
- Drive design: gearless brushless motors lower noise and maintenance versus brushed alternatives.
- Shaft and propeller: match the ø10 mm shaft and 75 mm 4-blade propeller to your vessel size and mixing pattern.
- Safety: built-in overload stop and thermal protection guard the motor during extended runs.
Specifications
| Specification | Detail |
|---|---|
| Material | Stainless steel |
| Speed Range | 100–1000 rpm |
| Maximum Torque | 0.98 N·m (10 kgf·cm) |
| Motor | DC brushless, 100 W |
| Sample Viscosity | Medium |
| 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 |
| Configuration | Complete set — main body with stand, rod, and stainless-steel stirring shaft |
| Country of Origin | Japan |
| GTIN (Barcode) | 797059928880 |
| Shipping Weight | 30 lbs |
| Dimensions (L × W × H) | 24 × 18 × 18 in |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| LR-500BA | SET | SET |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com ships the LR500B Set as a genuine Yamato Scientific unit, ready to order directly online without a quote request.
- Authorized Yamato Scientific dealer: every unit is genuine and carries full manufacturer warranty.
- In stock: ready to ship from USA inventory.
- Complete configuration: stand, rod, stainless-steel shaft, propeller, and clamp included in one set.
- Lab-equipment specialists: our team answers stirrer spec questions before you order.
Frequently Asked Questions
What is the speed range of the Yamato LR500B stirrer?
The LR500B operates from 100 to 1000 rpm. Digital speed feedback control maintains the set rate even as sample viscosity or load changes.
How much torque does the LR500B deliver?
Maximum torque is 0.98 N·m (10 kgf·cm). That output handles medium- to high-viscosity solutions driven by a 100 W DC brushless motor.
What accessories are included with the LR500B Set?
The set includes the main body, stand, rod, a ø10 × 500 mm stainless-steel stirring shaft, a 75 mm 4-blade propeller, and a clamp. Five components ship together as one kit.
What materials contact the sample?
The stirring shaft and propeller are stainless steel. The ø10 mm direct-drive shaft measures 500 mm in length.
Does the LR500B protect against motor overload?
Yes. An overload lamp lights and the motor stops automatically when the maximum load is exceeded, supported by a current-limit circuit and thermal motor protection.
What are the dimensions and weight for shipping?
The unit ships at roughly 30 lbs with packed dimensions of 24 × 18 × 18 inches. It is built in Japan under ISO 9001:2015 and ISO 14001:2015 certification.