Reliable Belt Splicing for Safer Conveyor Operation

Choosing the right conveyor belt fastener plays a key role in improving equipment reliability, extending service life, and ensuring safe operation. A proper fastening solution helps maintain stable belt performance and reduces the risk of unexpected downtime.

Connection Styles Available

We offer four standard connection styles to meet different working conditions:

• S1
• S2
• S4
• S5

These fastening systems are widely used by conveyor equipment manufacturers and have received consistent positive feedback from end users across various industries.

Product Features of S1, S2, S4 and S5 Belt Fasteners

• S1 belt fasteners are manufactured through one-piece stamping, ensuring consistent dimensions for each unit. This allows full interchangeability and high assembly precision.

• S2 belt fasteners provide improved strength compared to S1, offering a balanced solution between cost and performance. They are suitable for medium-duty applications and widely used in both agricultural and industrial conveyors.

• S4 and S5 belt fasteners are composed of three precision-engineered components produced by investment casting, providing excellent structural strength and strong clamping force for heavy-duty applications.

• Two material options are available: galvanized cast steel for enhanced corrosion resistance, and stainless steel for more demanding environments.

• The modular design allows flexible combination, making the fasteners suitable for different belt widths and conveyor configurations.

• Galvanized surface treatment provides effective anti-rust protection, extending service life in industrial environments.

• Equipped with locknuts to prevent loosening during operation, ensuring stable and safe performance.

Fastener Strength Comparison (kN/m)

Flexible and Interchangeable Design

Our belt fasteners are designed with interchangeable clamps, allowing flexible configuration based on your specific conveyor system.

The required quantity can be selected according to the belt width, ensuring optimal performance and cost efficiency. If needed, our team can recommend the most suitable solution based on your application.

Why Choosing the Right Fastener Matters

Selecting the correct belt fastener not only improves connection strength but also:

• Enhances operational safety
• Extends the service life of both belt and equipment
• Reduces maintenance frequency
• Improves overall conveying efficiency

Belt Clamp Fastener Installation Guidelines

• Select the appropriate belt fastener model and quantity based on the elevator belt tensile strength and belt width to ensure safe and reliable operation

• The total belt length should be calculated as:
Total Belt Length = Net Belt Circumference + Belt Fastener Length
(Fastener length: S1 – 180 mm, S2 – 190 mm, S4 – 220 mm, S5 – 230 mm)

• Maintain proper edge distance when installing belt clamps:
– S1 / S2: 60 mm from each side
– S4 / S5: 80 mm from each side

• Mark a centerline along the belt to ensure accurate alignment during installation, helping the belt run straight and stable during operation

S1 vs S2 vs S4 vs S5 – Application Guide & Selection Recommendation

Choosing the right belt fastener model is essential to ensure safe operation, reliable performance, and long service life of your conveyor system. Below is a practical selection guide based on different working conditions:

S1 Belt Fastener – Light Duty Applications

Recommended for light-duty conveyor systems with lower tensile strength requirements.

• Suitable for PVC belts and light rubber belts
• Easy installation with good interchangeability
• Cost-effective for standard conveying tasks

👉 Best choice for: Grain, feed, and light agricultural applications

S2 Belt Fastener – Medium Duty Applications

An upgraded option compared to S1, offering higher strength and wider application range.

• Suitable for medium tensile strength belts
• Better clamping force than S1
• Balanced performance between cost and durability
• Suitable for both PVC and rubber belts

👉 Best choice for: Grain handling, feed mills, and general industrial conveyors

 S4 Belt Fastener – Medium to Heavy Duty Applications

Designed for stronger performance under higher load and tougher working conditions.

• Suitable for rubber belts with higher tensile strength
• Strong clamping force for stable operation
• Good resistance to wear and impact

👉 Best choice for: Bulk material handling, industrial conveying systems

S5 Belt Fastener – Heavy Duty & High Load Applications

Engineered for the most demanding environments with maximum strength and durability.

• Highest clamping strength among all models
• Excellent performance under high tension and impact
• Suitable for thick rubber belts and harsh environments

👉 Best choice for: Mining, cement, aggregates, and heavy-duty conveyors

S1 → Light | S2 → Medium | S4 → Medium-Heavy | S5 → Heavy Duty

How to Choose the Right Model?

When selecting the appropriate belt fastener, please consider:

• Belt tensile strength (kN/m)
• Belt thickness and width
• Application environment (light, medium, or heavy duty)
• Required service life and maintenance conditions

If you are unsure which model fits your application, feel free to send us your belt specifications — we will recommend the most suitable solution.

***“Not sure about the correct model? Send us your belt specs — we will recommend the right solution.”