Lr-500A Set Main Body, Stand, Rod, Stainless Steel Shaft And 75 Mm 4-Blade Propeller Overview
The Yamato Scientific LR500A is a digital overhead laboratory stirrer engineered for high-viscosity samples, with a 34–340 rpm speed range and a complete set that includes the main body, stand, rod, stainless-steel shaft, and 75 mm 4-blade propeller. LabSupplies.com, authorized dealer, ships this unit ready for immediate bench setup.
A DC brushless 70 W motor drives the gearless direct-drive system, delivering up to 1.96 N·m (20 kgf·cm) of torque through a ø10 mm shaft. Brushless construction removes spark risk and brush replacement. Direct drive keeps noise low and maintenance minimal while sustaining torque on thick media.
Built around a stainless-steel shaft and propeller, the LR500A weighs 30 lbs and measures 24 × 18 × 18 in. Manufactured in Japan, the stirrer carries ISO 9001:2015 and ISO 14001:2015 certification. Speed feedback control holds the set rate as viscosity shifts during a run.
Key Features
- DC brushless motor: 70 W, sparkless operation with no brushes to replace.
- Gearless direct drive: low-noise, low-maintenance ø10 mm shaft delivering up to 1.96 N·m torque.
- Speed feedback control: maintains the set rate from 34–340 rpm despite viscosity change, suiting thick solutions.
- Digital display: 3-digit speed readout with an LED torque/overload indicator for live load monitoring.
- Safety protection: overload stop plus current-limit circuit and thermal motor protection.
- Complete set: main body, stand, rod, stainless-steel stirring shaft (ø10 × 500 mm), 75 mm 4-blade propeller, and clamp.
How to Choose the Right Stirrer
Selecting an overhead stirrer comes down to matching motor torque and speed control to your sample viscosity and vessel size. Review these axes before specifying a unit.
- Sample viscosity and torque: thick media demand high torque; the LR500A reaches 1.96 N·m for heavy mixing loads.
- Speed range and control: a 34–340 rpm range with feedback control keeps the rate steady as resistance changes mid-run.
- Motor type: DC brushless drives avoid sparking and brush wear, an advantage for continuous duty.
- Shaft and impeller: stainless-steel construction with a 75 mm 4-blade propeller resists corrosion and suits aqueous and many solvent samples.
- Safety devices: overload stop and thermal protection guard the motor when load exceeds limits.
- Footprint and weight: verify bench space against the 24 × 18 × 18 in stand assembly and 30 lb mass.
Specifications
| Specification | Detail |
|---|---|
| Material | Stainless steel |
| Speed Range | 34–340 rpm |
| Maximum Torque | 1.96 N·m (20 kgf·cm) |
| Motor | DC brushless, 70 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 |
| Configuration | Complete set — main body with stand, rod, and stainless-steel stirring shaft |
| Country of Origin | Japan |
| GTIN (Barcode) | 797059928873 |
| Shipping Weight | 30 lbs |
| Dimensions (L × W × H) | 24 × 18 × 18 in |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| LR-500AA | SET | SET |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com supplies the LR500A as a genuine Yamato Scientific unit, fulfilled directly so your lab receives a complete, ready-to-run set without sourcing accessories separately.
- Authorized Yamato Scientific dealer: genuine equipment backed by the manufacturer warranty.
- In stock: ready to ship as a complete set with stand, rod, shaft, and propeller.
- Ships from USA inventory: domestic fulfillment for faster delivery.
- Lab-equipment specialists: dedicated support for stirrer specification questions.
Frequently Asked Questions
What is the speed range of the Yamato LR500A stirrer?
The LR500A runs from 34 to 340 rpm. Speed feedback control maintains the set rate even as sample viscosity changes during stirring, making it suited to high-viscosity solutions.
How much torque does the LR500A deliver?
The LR500A delivers a maximum torque of 1.96 N·m (20 kgf·cm). Its 70 W DC brushless motor and gearless direct drive sustain that torque for stirring thick, high-viscosity media.
What is included in the LR500A set?
The set includes the main body, stand, rod, a stainless-steel stirring shaft (ø10 × 500 mm), a 75 mm 4-blade propeller, and a clamp. It arrives as a complete five-component kit ready for bench assembly.
What materials are the LR500A shaft and propeller made from?
The stirring shaft and 75 mm 4-blade propeller are stainless steel. The shaft measures ø10 × 500 mm and resists corrosion across aqueous and many solvent-based samples.
What safety features protect the LR500A motor?
The LR500A includes an overload stop that halts the motor automatically when load exceeds the maximum, plus a current-limit circuit and thermal motor protection. An LED indicator displays torque and overload status.
What are the dimensions and weight of the LR500A?
The LR500A measures 24 × 18 × 18 inches and weighs 30 lbs. It is manufactured in Japan and carries ISO 9001:2015 and ISO 14001:2015 certification.