Overview
The Kop-Flex 1960574 is a rigid hub gear coupling in Size 2-1/2 (SB RHUB configuration) designed for efficient power transmission and torque delivery between two rotating shafts. Manufactured by Regal Rexnord under the Kop-Flex brand, this coupling combines proven gear coupling design with large bore capacity and o-ring seal technology, making it ideal for demanding industrial applications requiring reliable, long-service-life operation.
Key Features
- Large bore capacity (4 in bore diameter) with o-ring seal design for enhanced lubricant retention and contaminant exclusion
- Curved face teeth geometry for up to 1.5 degrees static misalignment capability, accommodating minor installation variations
- Precision-drilled flange bolt holes with special body-fitting, grade 5 bolts for a long-lasting piloted flange connection
- Carbon steel construction for durability and reliable performance in industrial machinery
- Maximum operating speed of 7900 rpm suitable for motor-driven and direct-coupled applications
Technical Specifications
The following table provides key dimensional and operational specifications for this Kop-Flex rigid hub coupling:
Typical Applications
The Kop-Flex 1960574 is commonly used in:
- Centrifugal pump drives and compressor systems
- Motor-to-gear reducer connections
- General industrial machinery requiring shaft power transmission
- Applications requiring accommodation of minor angular and parallel misalignment
- Systems where compact, economical coupling design is preferred
Compatibility & Replacements
Compatible With
- Motor and turbine shafts with 4 inch maximum bore diameter
- Standard AGMA flange connections and piloted mounting
- Pumps, compressors, and speed reducers rated for Size 2-1/2 rigid hubs
- Applications operating within 7900 rpm maximum speed limit
Replaces / Drop-In Replacement For
Verify specific interchangeability with your system integrator or Kop-Flex distributor before ordering, as rigid hub couplings require precise bore and flange specifications. The 1960574 designation is manufacturer-specific; consult engineering drawings to confirm fitment.
Works With
- Kop-Flex KHP and KSG coupling greases (recommended for maximum operating life)
- Standard Buna-N o-ring lubricant seals
- AGMA 9002-A86 commercial standard shaft tolerances
- Regal Rexnord coupling service and repair networks
