Flexible Gear Coupling Types — Complete Guide
The main flexible gear coupling types are full gear couplings (both hubs flexible), half gear couplings (one flexible hub, one rigid flange), brake drum gear couplings (integrated braking), spacer couplings (for shaft separation), and mill motor couplings. Each suits different misalignment, torque, and configuration requirements.
Key Facts
- Full gear coupling — both hubs flexible.
- Half gear coupling — one flexible hub + one rigid flange.
- Brake-drum gear coupling — integral braking surface.
- Spacer/DBSE coupling — shaft separation for pump back-pull-out.
- Mill-motor and vertical types for special drives.
Frequently Asked Questions
What are the main types of flexible gear couplings?
Full gear, half gear (half gear-half rigid), brake drum, spacer, and mill motor gear couplings. The choice depends on misalignment needs, torque, and whether braking or shaft separation is required.
Which gear coupling type should I choose for my application?
Choose full gear for misalignment on both ends and high torque, half gear when one end is fixed, brake-drum when braking is required, and a spacer (DBSE) coupling when a pump needs back-pull-out maintenance.
What is a spacer (DBSE) gear coupling?
A spacer gear coupling leaves a defined gap (distance between shaft ends) so a pump's rotating assembly can be removed for service without moving the motor — known as back-pull-out maintenance.
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