BL300 Laboratory Mixer

Description

The Bench Standard for Thick Materials

Set any speed from 5 to 300 rpm and automatic feedback control holds it there as the material thickens, thins, or does something you did not plan for. The 300 rpm model of the 40 W Three-One Motor series brings 1.3 N·m of torque to high viscosity work in bench-size batches: pastes, creams, and gels, and the batches that change as they run.

Solving the Hard Problems in High Viscosity Mixing

• Overload failures that kill the mixer: The current limiter protects the motor from burning out under load. This is an instrument you service and keep, not a throw-away mixer you replace.
• Overload shutdowns that kill the batch: The same limiter keeps the motor driving through loads that cut ordinary mixers off. Your process stays running and the batch survives.
• Speed drift as the batch thickens: Automatic speed feedback compensates for rising viscosity in real time. No manual correction, no drifting results.
• Shear-sensitive and gentle work: A true 5 rpm floor supports slow suspension, crystallization, and delicate dispersions that ordinary mixers spin too fast to handle.
• Unmixed layers in the vessel: Set your forward and reverse cycles once, 5 to 60 seconds each, and the mixer alternates automatically for the entire run. The ring-shaped regions that single direction mixing leaves behind never form.

Built for the Everyday Bench

The spark-free brushless motor runs quietly in a sealed aluminum body weighing just 2.0 kg, a design unchanged in its essentials since the first Three-One Motor of 1966. A keyless collet chuck makes shaft changes fast, the simple safety cover ships in the box, and a stop timer programmable from 30 minutes to 24 hours covers unattended runs. Part of the Heidon Three-One Motor line, manufactured by Shinto Scientific and sold and supported in the US by Kett, with every configuration backed by the One-Year Total Care Warranty covering parts, labor, and specification compliance.

Three ways to order. Motor Only is the drive unit alone, ready for the shafts and blades you already run. The P configuration adds the FS7 blade set and a 500 mm stainless steel shaft for a working setup out of the box. The S configuration adds the stand, completing a full mixing station.

Need more torque at the same speeds? The BLH300 High Power Laboratory Mixer doubles the torque to 2.6 N·m in the same 2.2 kg body.

Want the motor to stop the moment the cover opens? The BL300SAF Safety Laboratory Mixer adds the interlocked full-guard cover to the same drive.