ML Series Polyurethane Plum-Shaped Elastic Pad – Spider Insert for Couplings, 25-12500 N·m

Factory Direct | High-Strength Polyurethane (PU) | Plum-Shaped (Quincunx) Design | Oil & Wear Resistant | -35°C to +80°C | 25-12500 N·m Torque | Maintenance-Free | OEM Customizable

The Apexcoupling ML Series is a high-performance polyurethane plum-shaped elastic pad (also known as a coupling spider insert, elastomeric element, or coupling cushion). This ML Type polyurethane buffer pad is a key mechanical component used to connect two shafts and transmit torque in ML/LM series plum blossom couplings. Its unique plum blossom (quincunx) shape allows it to absorb vibration, compensate for misalignment, and reduce noise, thereby protecting connected equipment. Manufactured from high-strength polyurethane, it offers excellent wear resistance, oil resistance, and long service life. The ML Series is the ideal replacement elastic pad for rolling mills, cranes, forging presses, petroleum equipment, and various heavy machinery.

✅ High-strength polyurethane for durability and long life. Oil & wear resistant for harsh environments. Maintenance-free – no lubrication required. Excellent vibration damping and misalignment compensation. Compatible with standard ML/LM series couplings. OEM custom sizes available.

Key Technical Specifications

ML Series – Model Range & Specifications

📐 Dimensions are for reference. Custom sizes and non-standard ML plum-shaped pads are available upon request. Contact our engineering team for custom sizing.

Product Structure

1. Polyurethane Elastomer Body – High-strength PU material with a plum blossom / quincunx shape.

2. Multiple Petals / Lobes – The number of petals varies by model (4 to 12), engaging with the coupling hubs.

3. Center Hole – Accommodates the coupling hub connection.

💡 How it works: The ML Series elastic pad is installed between the two metal hubs of a plum blossom coupling. The pad’s lobes engage with the teeth of the coupling halves. As torque is transmitted, the polyurethane element flexes to absorb vibration, dampen shock, and compensate for angular, radial, and axial misalignment. The elastomer is subjected to radial compression, providing elastic deformation to automatically compensate for relative displacement between shafts. This design significantly extends the service life of the drive system. The pad is maintenance-free and requires no lubrication.

Product Features & Advantages

Applications

• Rolling Mills – Steel and metal processing

• Cranes & Hoists – Lifting and material handling

• Forging Presses – Heavy industrial presses

• Petroleum Equipment – Oil and gas machinery

• Conveyors – Material handling systems

• Pumps – Centrifugal, gear, and diaphragm pumps

• Fans & Blowers – Industrial ventilation

• Compressors – Air and gas compressors

• Mixers – Industrial mixing equipment

• Mining Equipment – Crushers, feeders, conveyors

• Textile Machinery – Spinning and weaving equipment

Why Choose Apex Coupling for ML Series Elastic Pads?

FAQ

Q: What is an ML Series elastic pad?
A: An ML Series elastic pad (also known as a plum blossom cushion or coupling spider) is a polyurethane insert used in ML/LM series plum blossom couplings. It is a key component that transmits torque between the two coupling hubs while absorbing vibration, dampening shock, and compensating for misalignment.

Q: What is the difference between ML and MT series?
A: ML is the coupling model, while MT is the elastic pad model used within ML couplings. The ML series pad is the standard elastomer for ML/LM (LM/LLM) plum blossom couplings.

Q: What materials are used?
A: The ML Series is manufactured from high-strength polyurethane (PU) – offering excellent wear resistance, oil resistance, and long service life.

Q: What is the torque range?
A: The ML Series covers 25 – 12500 N·m torque capacity.

Q: What is the operating temperature range?
A: The ML Series operates in temperatures from -35°C to +80°C.

Q: Does the pad require lubrication?
A: No. The ML Series is maintenance-free – no lubrication required.

Q: Is the pad oil-resistant?
A: Yes. The polyurethane material is oil-resistant and wear-resistant – suitable for harsh industrial environments.

Q: Can the pad compensate for misalignment?
A: Yes. The plum blossom shape allows the pad to compensate for angular, radial, and axial misalignment.

Q: What sizes are available?
A: ML1 through ML13 – covering outer diameters from 48mm to 391mm. Custom sizes are available on request.

Q: Can I get a custom pad?
A: Yes. We offer OEM customization – custom sizes and special polyurethane compounds available.

Request a Quote

Send us your ML model (e.g., ML5, ML10), dimensions, Shore hardness preference, and application details. Our engineers will recommend the optimal pad and provide a quotation within 24 hours.