Overview
The HMQ518-07-H-IEC63 is a Leeson Hydro-Mec Bravo Series worm gear reducer engineered for reliable power transmission in industrial machinery. This unit delivers a 7:1 gear ratio with 278 in-lbs peak output torque, designed to work efficiently with 1.378HP input power. The compact aluminum construction ensures durability while maintaining lightweight portability, making it ideal for retrofit and new installation projects across manufacturing, conveyor, and automation equipment.
Key Features
- 7:1 Gear Ratio: Provides optimal speed reduction for intermediate-duty industrial applications.
- 278 in-lbs Torque Output: Sufficient for moderate-load machinery and conveyor systems.
- IEC63 Frame Connection: Industry-standard motor interface simplifies compatibility with common three-phase motors.
- Aluminum Housing: Lightweight yet robust construction resists corrosion and extends service life.
- Single-Reduction Design: Straightforward operation minimizes maintenance complexity and failure points.
Technical Specifications
- Model: HMQ518-07-H-IEC63
- Manufacturer: Leeson (Grove Gear / Regal Rexnord)
- Series: Hydro-Mec Bravo 518
- Gear Ratio: 7:1
- Input Power Rating: 1.378 HP
- Output Torque: 278 in-lbs
- Motor Frame: IEC63
- Input Shaft: 18mm (standard IEC)
- Lubrication: PAG Synthetic Oil
- Material: Aluminum Housing with Bronze Worm Gear
- Condition: New – No Box
- Mounting Style: C-Face / Flange Mount
Typical Applications
- Conveyor drive systems and material handling equipment
- Printing and packaging machinery
- Food processing equipment requiring hygienic design
- HVAC and pump drive systems
- Robotics and automation platforms with moderate torque demands
- Machine tool speed reduction and feed drives
Compatibility & Replacements
Compatible With
- IEC standard three-phase electric motors (56C, 63, and compatible frames)
- Baldor, Reliance, WEG, and equivalent motor brands with IEC flanges
- Direct-couple and belt-drive applications
- Existing conveyor and machinery systems designed for Bravo 518-series reducers
- PAG synthetic oil-based lubrication systems
Replaces / Drop-In Replacement For
- HMQ518-07-H-56-12 (with IEC63 frame adapter)
- Other Leeson 7:1 gear reducers with equivalent torque and speed ratings
- Legacy Grove Gear Bravo worm reducers requiring IEC frame standardization
Works With
- IEC motor mounting standards (C-Face, SAE, foot-mount)
- Standard industrial control systems and variable frequency drives (VFDs)
- PAG and mineral oil lubrication platforms
- Metric and inch-based dimensional frameworks




