Enhance your power transmission performance with premium SPZ belts, engineered for high torque transfer, long service life, and exceptional reliability. At Bolton Engineering Products Ltd (BEP Ltd), we supply a complete range of SPZ wedge belts suitable for industrial machinery, automotive systems, HVAC equipment, agricultural tools, and construction vehicles.

Whether you’re replacing an existing belt or maintaining your operations, our SPZ belts ensure consistent efficiency and durability under demanding conditions.

Why Choose SPZ V-Belts?

SPZ belts—also called belt SPZ or SPZ wedge belts—are narrow-profile belts designed for high-speed and compact power transmission drives.

Key Advantages

• Higher power transmission in a compact design
• Outstanding resistance to heat, abrasion, and deformation
• Reliable performance under variable loads
• Low noise and vibration
• Ideal for high-speed industrial and automotive applications
• Manufactured to ISO & DIN standards

SPZ V-Belt Size Chart 

How to Select the Right SPZ Wedge Belt

Choosing the correct belt ensures optimal performance and extended equipment life. Follow these steps when selecting your SPZ belt:

1. Measure the Belt Length

• Measure the inner circumference of your current belt.
• Use a flexible measuring tape or a belt-measuring tool.
• Avoid steel rulers or metal tapes, as they distort lengths.
• Straighten the measuring tape after looping to obtain the correct size.

2. Check Width and Height

• SPZ belts feature a standard trapezoidal profile.
• Confirm dimensions: 10 mm top width and 8 mm height.
• Ensure the belt fits your pulley groove without slipping or riding high.

3. Match with Manufacturer Specifications

• Refer to equipment manuals for belt codes
• Or match pulley markings (e.g., SPZ, SPZ1120, SPZ1250)

Common Applications of SPZ Belts

SPZ belts are widely used across industries such as:

• Automotive alternators & auxiliary systems
• Industrial motors, pumps & compressors
• Conveyor & packaging machinery
• Agricultural equipment & forestry tools
• HVAC blowers, fans & ventilation units
• Construction and mining machinery

Why Buy SPZ Belts From BEP Ltd?

• Trusted UK engineering supplier
• Large stock availability for fast shipping
• High-quality, tested belts that meet OEM standards
• Competitive pricing for single and bulk orders
• Expert guidance to help select the correct belt

Frequently Asked Questions (FAQs)

What is an SPZ belt?

A narrow section SPZ belt of profile size 10 mm × 8 mm for high-speed, high-performance industrial and automotive applications.

How do I know what SPZ belt size I need?

Measuring the Inner length, wide, high of your old belt and verify it immediately. Or Please Refer to the equipment manufacturer’s manual.

Is the SPZ product suitable for heavy loads?

Yes. SPZ belts are designed for low speed high torque reversing applications, which exist in heavy industrial machinery.

Do you provide matched sets for multiplate belt drives?

Yes, BEP Ltd supplies factory matched SPZ belt sets to achieve even tensioning throughout multi-groove systems.