Philadelphia Gear Drive — Model 1400DHVT, 159:1 Ratio, 22.2 HP, 1750 RPM Input (Crystallizer Drive)

Listing Summary

Available for immediate sale is a Philadelphia Gear Model 1400DHVT Crystallizer Agitator Drive, professionally rebuilt in April 2021 by David Brown Santasalo (UniGear Heritage) in Baie-d'Urfé, Québec (S.O. #37338). This unit was purpose-built as the agitator drive for Crystallizer Nos. 10 and 11 at a large chemical processing facility and is being offered as surplus following the plant's decommissioning.

The DHVT designation identifies this as a Double Helical, Vertical, Torque-Arm mounted gear reducer — a configuration specifically engineered for high-torque, low-speed agitator and crystallizer applications where precise speed reduction and high reliability are paramount. The 159:1 reduction ratio steps a standard 1750 RPM motor input down to approximately 11 RPM output, which is the characteristic slow-speed, high-torque output required to drive large crystallizer agitators.

This unit carries the full David Brown Santasalo rebuild certification from April 2021 and has been in indoor, climate-controlled storage since the rebuild. 

Key Specifications

Typical Applications

The Philadelphia Gear 1400DHVT is designed for high-torque, low-speed agitator and mixer drive applications including:

•Industrial crystallizers (sugar, chemical, pharmaceutical, fertilizer, salt)

•Large agitators and mixers in chemical processing and mineral processing

•Thickener and clarifier drives in water treatment and mineral processing

•Slow-speed conveyor and kiln drives requiring high torque output

The 159:1 ratio and 176,000 in-lb torque rating make this unit suitable for driving large-diameter agitator shafts in vessels up to several thousand gallons capacity. The DHVT torque-arm mounting configuration is particularly well-suited for agitator applications where the gearbox must react torque through a fixed arm rather than a rigid base mount.