Overview
The Falk 1020G Seal End is a single-engagement flexible gear coupling manufactured by Rexnord’s Falk division. This coupling is engineered for mechanical power transmission in industrial applications where shaft misalignment compensation and reliable torque delivery are essential. The seal-end design maintains internal lubrication while protecting the gear teeth from external contamination, ensuring extended service life with minimal maintenance.
Key Features
- Triple-Crowned Teeth: Crowned on the root, tip and face, allowing the coupling to articulate freely and minimize wear caused by misalignment
- Sealed Lubrication: Integral seal rings prevent grease loss and contamination ingress
- AGMA-Compatible: AGMA bolt pattern makes Falk Lifelign couplings easily interchangeable with any standard gear coupling on existing applications
- Misalignment Tolerance: Double engagement, close-coupled solution featuring two flex halves to manage offset, angular, and axial misalignment
- Low Maintenance: Grease-lubricated design reduces operating costs and extends interval between service cycles
Technical Specifications
- Coupling Size: 1020G
- Torque Capacity: 37,800 in-lbs
- Maximum Speed: 5,600 rpm
- Hub Outer Diameter: 4.140 inches
- Hub Length: 2.44 inches
- Overall Coupling Length: 5 inches
- Hub Material: Steel
- Weight: 18.81 lbs
- Operating Temperature Range: –30°F to 200°F (–34°C to 93°C)
- Lubrication: NLGI #1 Extreme Pressure (EP) grease or Falk LTG grease
- Bore Style: Flexible Hub – Seal End
Typical Applications
The Falk 1020G Seal End is used in pumps, motors, compressors, and general industrial machinery where dual-shaft misalignment accommodation is required. Its compact design and sealed construction make it ideal for food processing, chemical processing, water treatment, and other applications where seal integrity and low-maintenance operation are valued. The coupling handles angular, parallel, and axial misalignment while maintaining precise torque transmission.
Compatibility & Replacements
Compatible With
- Any AGMA-standard motor or equipment shaft requiring sealed flexible coupling
- Mill motors with standard flange mounting patterns
- Electric motors and internal combustion engines up to 5,600 rpm
- Industrial gearboxes and driven equipment with 1020G coupling interfaces
- Falk Lifelign sealed sleeves and flanged end plates
Replaces / Drop-In Replacement For
The Falk 1020G Seal End is a direct replacement for earlier Falk 1020G models and functions as an AGMA-compatible alternative to other manufacturers’ standard gear couplings in the same size class. Verify bore diameter and keyway specifications with your equipment OEM before ordering.
Works With
- Falk LTG grease (recommended lubricant; includes three-year warranty coverage)
- NLGI #1 Extreme Pressure (EP) grease for standard-speed applications
- NLGI #0 Extreme Pressure (EP) grease for low-speed coupling applications
- Standard coupling installation and maintenance tools (no special adapters required)
- Industrial condition monitoring and vibration analysis equipment
