AT5 timing pulleys are widely used in synchronous transmission systems that require high precision and stable operation. Featuring a standard AT5 tooth profile with a 5mm pitch, AT5 pulleys combined with AT5 timing belts provide efficient power transmission, reduce slippage and vibration, and improve overall system durability.

This article helps you better understand the structure, technical specifications, advantages, and common dimensions of AT5 timing pulleys for CNC machines, conveyors, and automation systems.

What Is an AT5 Timing Pulley?

An AT5 timing pulley is a toothed pulley designed according to the AT5 standard profile. When used together with an AT5 timing belt, it creates a synchronous transmission system that transfers motion from the motor to other machine components accurately, smoothly, and without slipping.

Structure of AT5 Timing Pulley

AT5 timing pulleys are designed with several important components to ensure accurate and stable transmission performance:

  • Pulley flange: The outer flange has a larger diameter than the tooth tip, helping keep the belt aligned and reducing the risk of slipping during operation.
  • Pulley body: Features precision-machined AT5 teeth with different tooth counts depending on transmission requirements. These teeth directly engage with the timing belt to transmit power.
  • Shaft mounting section: Available in various designs such as keyed bore, bearing-mounted, or clamping type with bolts, ensuring secure installation, smooth rotation, and easy maintenance.

Technical Specifications of AT5 Timing Pulley

AT5 timing pulleys are designed for synchronous, accurate, and stable power transmission in industrial systems.

  • Material
    • Aluminum: Lightweight, easy to machine, commonly sandblasted or anodized for increased hardness and corrosion resistance.
    • Steel: High durability and load capacity, often zinc-plated, chrome-plated, or black oxidized for better wear and oxidation resistance.
  • Tooth Profile
    • Standard AT5 tooth profile
    • Tooth pitch: 5mm
    • Common tooth counts: 15, 20, 25, and more depending on application requirements
  • Surface Finish
  • Aluminum pulleys: anodized or sandblasted surface
  • Steel pulleys: protective coating for improved wear resistance

Working Principle

AT5 pulleys operate together with AT5 timing belts to transfer rotational motion from the motor to rollers or mechanical components.

The precise tooth engagement minimizes slippage and ensures high transmission efficiency.

Advantages of AT5 Timing Pulley

  • High transmission accuracy thanks to precise tooth geometry
  • Excellent torque transmission with minimal belt slippage
  • Stable and smooth operation during continuous running
  • High wear resistance and long service life
  • Suitable for dusty, humid, or high-temperature industrial environments
  • Reduced maintenance costs and improved system efficiency

Common AT5 Timing Pulley Specifications

Teeth (Z) P.D. (mm) O.D. (mm) Shaft Bore D (mm) Flange F (mm) Diameter E (mm) Screw Size I
15 23.87 22.65 13 28 18 M4
16 25.46 24.20 16 32 20 M4
18 28.65 27.40 16 33 22 M5
20 31.83 30.60 20 36 24 M5
22 35.01 33.85 20 40 27 M5
24 38.20 37.00 25 45 30 M5
25 39.79 38.60 25 45 30 M5
26 41.38 40.20 30 48 35 M5
28 44.56 43.35 30 48 35 M5
30 47.75 46.55 35 55 40 M6
32 50.93 49.70 35 55 40 M6
36 57.30 56.05 40 61 45 M6
40 63.66 62.45 45 67 50 M6
44 70.03 68.80 45 74 58 M6
48 76.39 75.15 45 83 63 M6
50 79.58 78.35 45 87 67 M6
60 95.49 94.25 45 99 80 M6

Applications of AT5 Timing Pulley

AT5 timing pulleys are widely used in:

  • CNC machines
  • Conveyor systems
  • 3D printers
  • Laser engraving machines
  • Packaging machine
  • Automated production systems

Thanks to their precise transmission performance, durability, and wear resistance, AT5 timing pulleys help systems operate smoothly, extend timing belt lifespan, reduce maintenance costs, and improve overall production efficiency.

Belota – Reliable AT5 Timing Pulley Supplier

Belota specializes in supplying AT5 timing pulleys with accurate specifications and competitive pricing for industrial transmission systems. We provide technical consultation, custom machining solutions, and fast nationwide delivery to support various automation and mechanical applications.

Contact Belota today for free technical support and the best quotation for your AT5 timing pulley requirements.