LJ190158 Lovejoy L190 Jaw Coupling Hub 1-5/8″ Bore

LJ190158

L190 jaw coupling hub, 1-5/8 in bore

• The AR LJ190158 is a heavy-duty Lovejoy L190 jaw coupling hub engineered by
  Annovi Reverberi to deliver precise, high-torque power transmission and superior vibration damping in demanding
  industrial systems.
• Features a 1-5/8-inch bore with a 3/8 x 3/16 keyway to provide a secure, balanced connection
  between motor and pump shafts during continuous-duty operation.
• Ideal for large pumps, compressors, hydraulic systems, pressure washer assemblies, and industrial
  cleaning equipment where consistent, stable torque delivery is critical.
• Designed as part of the L190 series, offering higher torque capacity and robust performance
  for heavy-duty applications.

LJ190158 Design & Construction

High-strength steel L190 jaw geometry

• Constructed from high-strength steel for exceptional durability, rigidity, and wear resistance
  under high torque and continuous rotational loads.
• Precision-machined 1-5/8-inch bore ensures tight, concentric shaft fit for accurate alignment
  and smooth power transfer.
• Includes a 3/8 x 3/16-inch keyway that provides a positive, slip-free mechanical drive
  connection.
• Utilizes the classic three-jaw Lovejoy L190 design that mates with a matching hub and
  elastomer spider insert (sold separately).
• Finished with a corrosion-resistant surface to protect against moisture, cleaning agents, and
  environmental contaminants.
• Robust jaw geometry and precise machining ensure uniform load distribution across the elastomer
  element for long-term stability.

Performance & Protection

Torque transmission with vibration control

• When paired with an L190 elastomer spider, the hub forms a flexible coupling that
  cushions shock loads and absorbs torsional vibration.
• Compensates for minor angular, parallel, and axial misalignment between connected shafts,
  reducing stress on pumps, motors, bearings, and seals.
• High-torque capacity and balanced geometry minimize system resonance and deliver
  smooth, quiet rotational stability.
• Helps prevent premature wear and failure caused by misalignment, torque spikes, and uneven loading in heavy-duty
  drives.

Installation & Maintenance

Modular, lubrication-free coupling system

• Simple installation: slide the hub onto the keyed 1-5/8-inch shaft, align the key, secure with
  the set screw, and position the elastomer spider between the two hubs.
• Lubrication-free design keeps operation clean and reduces ongoing service requirements.
• Elastomer spider can be replaced quickly without removing the hubs or realigning the shafts,
  minimizing downtime during maintenance.
• Fail-safe Lovejoy construction allows limited operation even if the spider becomes worn, as the
  interlocking jaws remain partially engaged to maintain torque transfer until replacement.
• Routine maintenance typically consists of periodic inspection of the elastomer insert for wear, cracking, or
  hardening.

Applications

Heavy-duty industrial and cleaning systems

• Industrial wash and cleaning systems driving large high-pressure pumps.
• Hydraulic power units requiring stable, vibration-damped motor-to-pump connections.
• Compressors and blowers operating under variable speed and load conditions.
• Manufacturing and process equipment where smooth, balanced torque transmission protects critical
  rotating components.
• General industrial drive trains needing high torque capacity, misalignment tolerance, and
  reduced mechanical noise.

Key Features & Benefits

Spec highlights and selection notes

• Model: AR LJ190158 – Lovejoy L190 jaw coupling hub.
• Bore & Keyway: 1-5/8 in precision bore with 3/8 x 3/16 in keyway.
• Material: High-strength steel with corrosion-resistant finish.
• Coupling Style: Three-jaw L190 hub for use with L190 elastomer spiders (various durometers
  available).
• Benefits: High-torque capacity, vibration damping, misalignment compensation, and extended
  life for pumps, motors, and bearings.
• Keywords: LJ190158, Lovejoy L190 hub, 1-5/8 inch bore coupling, jaw coupling, elastomer spider
  coupling, high-torque shaft hub, vibration-damping coupling.