Lovejoy 11E Coupling Sleeve | S-Flex Elastomeric Insert

The Lovejoy 11E Coupling is a flexible elastomer element used in Lovejoy S-Flex style coupling assemblies. Installed between two compatible flanges, the sleeve transmits torque while isolating vibration and accommodating minor shaft misalignment.

Unlike rigid couplings, S-Flex designs rely on a replaceable elastomer sleeve to handle torsional shock loads. This design protects connected equipment such as motors, pumps, compressors, gearboxes, and conveyors from harmful vibration and mechanical stress.

The 11E sleeve is engineered for dependable industrial performance and is commonly used in applications where shock absorption and drivetrain protection are essential.

---

Key Features and Benefits

• Designed for Lovejoy S-Flex coupling systems

• Torsionally flexible elastomer construction

• Absorbs shock loads and vibration

• Compensates for angular and parallel shaft misalignment

• No lubrication required

• Easy installation and replacement

• Reduces drivetrain wear and mechanical noise

---

Functional Design and Performance

The Lovejoy 11E Insert is manufactured from durable elastomer material formulated to provide controlled torsional flexibility. When installed between two flanges, the sleeve transmits torque through compression rather than metal-to-metal contact. This allows it to:

• Cushion startup and shutdown shock

• Reduce peak torque transmission

• Protect bearings and shafts

• Lower vibration levels

In many industrial applications, shock loads and misalignment are unavoidable. The elastomer sleeve flexes under load, preventing these forces from transferring directly to sensitive components.

Because the sleeve is a replaceable wear component, maintenance is simplified. When the sleeve shows signs of wear, it can be replaced without disturbing shaft alignment or removing hubs from the shaft in most configurations.

---

Typical Applications

The Lovejoy 11E Coupling Insertis commonly used in:

• Electric motor to pump drives

• Gearbox connections

• Conveyor drive systems

• Industrial compressor drives

• General power transmission systems

This sleeve is designed for use with compatible Lovejoy S-Flex style flanges sized for the 11E configuration.

---

Technical Specifications (General)

• Model: 11E

• Type: Elastomeric S-Flex coupling

• Manufacturer: Lovejoy

• Function: Torque transmission with vibration damping

• Misalignment Capability: Angular and parallel

• Operating Environment: Industrial power transmission systems

• Maintenance: Replace sleeve as part of routine inspection

---

Why Elastomer Sleeves Matter

Using a properly sized coupling sleeve is critical to drivetrain longevity. An incorrect or worn sleeve can lead to vibration, slippage, or uneven torque transmission.

The Lovejoy 11E sleeve is engineered to provide consistent flexibility and load absorption, helping maintain smooth power transfer while reducing mechanical stress on connected equipment.

Because S-Flex systems rely on elastomer compression rather than interlocking metal parts, they provide quieter operation and reduced maintenance compared to many rigid coupling designs.

---

Why Choose Stark Industrial Products

Stark Industrial Products supplies industrial power transmission components built for real-world applications.

• Industrial-grade coupling components

• Same day shipping on stocked units

• Reliable supply for maintenance and repair

• Knowledgeable technical support

If you need assistance confirming flange compatibility for the Lovejoy 11E sleeve, our team is ready to help.