Thomson’s SB Worm Gears are installed to the unit using a unit type and gear-size-specific adapter flange, with no intermediate coupling needed. The gear mounts directly to the motor and no coupling, bell house or adaptor flange is required. An optional rear clevis can be mounted to the gear by using a rear clevis adaptor flange. This can be ordered as a package either unmounted or mounted to the unit, or as separate items. We have multiple options available – please contact us to discuss your requirements. Worm Gears SB Datasheet