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Toothed Belts

Metrical pitch AT, T, HTD / Inch pitch L, XL, H, XH, XXH

The synchronous belts ensure quiet, efficient, and slip-free power transmission, thanks to the toothed profile that meshes perfectly with pulleys of the same pitch. 

They are ideal for applications requiring positioning precision, reliability, and long life even in heavy-duty working conditions. They reduce maintenance and improve energy efficiency, making them perfect for machine tools, industrial automation, handling, and any application requiring reliable and precise transmission.

Available in a wide range of versions, they include:

  • Metric T, AT, and HTD synchronous belts for high precision standard applications and high power transmissions.
  • Inch XL, L, H, XH, and XXH synchronous belts, compatible with American standard machinery (imperial pitch).
  • Reinforced options with steel or Kevlar core for superior performance.

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T5 toothed belt - 390-10, pitch 5, width 10 mm, length 390 mm, 78 teeth, closed loop
ATTI • Code 039477 • CF CPOT05039010
T5 toothed belt - 390-10, pitch 5, width 10 mm, length 390 mm, 78 teeth, closed loop
List price 18,47 € /pc.
Online 10,16 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 390-16, pitch 5, width 16 mm, length 390 mm, 78 teeth, closed loop
ATTI • Code 039478 • CF CPOT05039016
T5 timing belt - 390-16, pitch 5, width 16 mm, length 390 mm, 78 teeth, closed loop
List price 29,56 € /pc.
Online 16,26 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 390-25, pitch 5, width 25 mm, length 390 mm, 78 teeth, closed loop
ATTI • Code 039479 • CF CPOT05039025
T5 timing belt - 390-25, pitch 5, width 25 mm, length 390 mm, 78 teeth, closed loop
List price 46,18 € /pc.
Online 25,40 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 400-10, pitch 5, width 10 mm, length 400 mm, 80 teeth, closed loop
ATTI • Code 039480 • CF CPOT05040010
T5 toothed belt - 400-10, pitch 5, width 10 mm, length 400 mm, 80 teeth, closed loop
List price 18,93 € /pc.
Online 10,41 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5- 400-16, pitch 5, width 16 mm, length 400 mm, 80 teeth, closed loop
ATTI • Code 039481 • CF CPOT05040016
Toothed belt T5- 400-16, pitch 5, width 16 mm, length 400 mm, 80 teeth, closed loop
List price 30,29 € /pc.
Online 16,66 € /pc.
On Order
(Ship. 6-7 days)
T5 belt - 400-25, pitch 5, width 25 mm, length 400 mm, 80 teeth, closed loop
ATTI • Code 039482 • CF CPOT05040025
T5 belt - 400-25, pitch 5, width 25 mm, length 400 mm, 80 teeth, closed loop
List price 47,33 € /pc.
Online 26,03 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5- 410-10, pitch 5, width 10 mm, development 410 mm, 82 teeth, closed loop
ATTI • Code 039483 • CF CPOT05041010
Toothed belt T5- 410-10, pitch 5, width 10 mm, development 410 mm, 82 teeth, closed loop
List price 19,30 € /pc.
Online 10,62 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 410-16, pitch 5, width 16 mm, length 410 mm, 82 teeth, endless ring
ATTI • Code 039484 • CF CPOT05041016
T5 timing belt - 410-16, pitch 5, width 16 mm, length 410 mm, 82 teeth, endless ring
List price 30,88 € /pc.
Online 16,98 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 410-25, pitch 5, width 25 mm, length 410 mm, 82 teeth, closed loop
ATTI • Code 039485 • CF CPOT05041025
T5 toothed belt - 410-25, pitch 5, width 25 mm, length 410 mm, 82 teeth, closed loop
List price 48,24 € /pc.
Online 26,53 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5- 420-10, pitch 5, width 10 mm, length 420 mm, 84 teeth, closed loop
ATTI • Code 039486 • CF CPOT05042010
Toothed belt T5- 420-10, pitch 5, width 10 mm, length 420 mm, 84 teeth, closed loop
List price 19,39 € /pc.
Online 10,66 € /pc.
On Order
(Ship. 6-7 days)
T5- 420-16 toothed belt, pitch 5, width 16 mm, length 420 mm, 84 teeth, closed loop
ATTI • Code 039487 • CF CPOT05042016
T5- 420-16 toothed belt, pitch 5, width 16 mm, length 420 mm, 84 teeth, closed loop
List price 31,02 € /pc.
Online 17,06 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 420-25, pitch 5, width 25 mm, length 420 mm, 84 teeth, closed loop
ATTI • Code 039488 • CF CPOT05042025
T5 toothed belt - 420-25, pitch 5, width 25 mm, length 420 mm, 84 teeth, closed loop
List price 48,47 € /pc.
Online 26,66 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 455-10, pitch 5, width 10 mm, length 455 mm, 91 teeth, closed loop
ATTI • Code 039489 • CF CPOT05045510
T5 timing belt - 455-10, pitch 5, width 10 mm, length 455 mm, 91 teeth, closed loop
List price 19,75 € /pc.
Online 10,86 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 455-16, pitch 5, width 16 mm, length 455 mm, 91 teeth, closed loop
ATTI • Code 039490 • CF CPOT05045516
T5 timing belt - 455-16, pitch 5, width 16 mm, length 455 mm, 91 teeth, closed loop
List price 31,60 € /pc.
Online 17,38 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 455-25, pitch 5, width 25 mm, length 455 mm, 91 teeth, closed loop
ATTI • Code 039491 • CF CPOT05045525
T5 toothed belt - 455-25, pitch 5, width 25 mm, length 455 mm, 91 teeth, closed loop
List price 49,38 € /pc.
Online 27,16 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 480-10, pitch 5, width 10 mm, length 480 mm, 96 teeth, closed loop
ATTI • Code 039492 • CF CPOT05048010
T5 timing belt - 480-10, pitch 5, width 10 mm, length 480 mm, 96 teeth, closed loop
List price 20,13 € /pc.
Online 11,07 € /pc.
On Order
(Ship. 6-7 days)
T5- 480-16 timing belt, pitch 5, width 16 mm, length 480 mm, 96 teeth, closed loop
ATTI • Code 039493 • CF CPOT05048016
T5- 480-16 timing belt, pitch 5, width 16 mm, length 480 mm, 96 teeth, closed loop
List price 32,19 € /pc.
Online 17,70 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 480-25, pitch 5, width 25 mm, length 480 mm, 96 teeth, closed loop
ATTI • Code 039494 • CF CPOT05048025
T5 timing belt - 480-25, pitch 5, width 25 mm, length 480 mm, 96 teeth, closed loop
List price 50,30 € /pc.
Online 27,67 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5- 500-10, pitch 5, width 10 mm, length 500 mm, 100 teeth, closed loop
ATTI • Code 039495 • CF CPOT05050010
Toothed belt T5- 500-10, pitch 5, width 10 mm, length 500 mm, 100 teeth, closed loop
List price 20,58 € /pc.
Online 11,32 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 500-16, pitch 5, width 16 mm, length 500 mm, 100 teeth, closed loop
ATTI • Code 039496 • CF CPOT05050016
T5 timing belt - 500-16, pitch 5, width 16 mm, length 500 mm, 100 teeth, closed loop
List price 32,92 € /pc.
Online 18,11 € /pc.
On Order
(Ship. 6-7 days)

Frequently asked questions

How is the code of an HTD timing belt read (e.g., 365-5M-15)?

The code of an HTD timing belt indicates the length, pitch of the teeth, and width of the belt.

Taking 365-5M-15 as an example:

  • 365: belt length in millimeters.
  • 5M: tooth pitch of 5 mm, with HTD profile.
  • 15: belt width in millimeters.

To calculate the number of teeth, simply divide the length by the pitch: 365 ÷ 5 = 73 teeth.

On shop.atti.it, ATTI offers over 4,200 timing belts, in HTD pitches of 3M, 5M, 8M, and 14M and in metric profiles.

What is the difference between HTD, T, and AT timing belts?

The HTD, T, and AT timing belts are primarily distinguished by their tooth profile and transmission characteristics.

  • HTD (3M, 5M, 8M, 14M): have rounded teeth and are particularly suitable for transmitting high torque.
  • T (T2.5, T5, T10): have trapezoidal teeth and a metric pitch. They are widely used in handling and positioning applications.
  • AT: have an enhanced trapezoidal profile compared to T belts and allow for greater force transmission at the same width.

Note: the belt and the pulley must have the same profile and the same pitch. Different types are therefore not directly interchangeable.

To choose the most suitable belt, it is important to verify the transmission characteristics and compatibility with the pulleys used.

What are the Gates Poly Chain Carbon belts and when are they used?

The Gates Poly Chain Carbon are polyurethane toothed belts with carbon fiber tensile cords, designed to transmit very high torque.

They are used in industrial applications that require robust and efficient drives and can be an alternative to traditional roller chains.

Compared to chains, they offer several advantages:

  • No lubrication is required.
  • They have a very low elongation during operation.
  • They allow the creation of drives suitable for high loads.

Caution: the Gates Poly Chain Carbon require pulleys with a dedicated profile and are not directly interchangeable with standard HTD toothed belts.

On shop.atti.it, ATTI offers over 250 codes from this range, including the Mini Poly Chain version.

Can open timing belts be purchased by the meter?

Yes. ATTI offers open timing belts by the meter in polyurethane, primarily used for linear shafts, conveyor belts, and positioning systems.

The belts can be ordered by the meter, with a minimum quantity of 5 meters.

In these applications, the ends of the belt are generally secured using special locking plates, available for the main pitches of the timing belts.

To identify the most suitable product, it is important to check the profile, pitch, and width of the belt.

Where to buy V-Belts Gates online in Italy?

On shop.atti.it, the e-commerce site of ATTI Srl, you can find V-Belts Gates from the Hi-Power and Delta Classic lines, as well as belts branded ATTI.

The catalog includes V-Belts of various types:

  • Classic sections: Z, A, B, C, D, E.
  • Narrow sections: SPZ, SPA, SPB, SPC.
  • Notched sections: AX, BX, XPZ, XPA, XPB, XPC.

On shop.atti.it, there are over 3,300 items in the V-Belts category, available for online purchase with shipping throughout Italy.

You can consult the available range in the V-Belts category.

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