Boston Gear F633B-63-B5 Helical Speed Reducer

Boston Gear F633B-63-B5 is a 63:1 right‑angle speed reducer from the 600 Series that uses a helically geared, spiral bevel arrangement to convert higher input speed into a lower-speed, high-torque output at a 90-degree drive. The F633B-63-B5 designation denotes a 63-to-1 reduction, and the family includes closely related variants such as F633BF-63-B5, confirming the same ratio across multiple mounting configurations. Designed for OEM and industrial drive trains where a perpendicular drive is required, this compact, robust reducer integrates with standard mounting patterns in the Boston Gear lineup and is manufactured under the Altra Industrial Motion umbrella. For exact dimensional data, shaft sizes, mounting pattern, and torque ratings specific to your configuration, consult the official Boston Gear datasheet for F633B-63-B5 and its related variants, with foot-mounted and flange-mounted options available in the 600 Series lineup, delivering reliable, long service life in demanding production environments.