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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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Toothed belt T2.5- 285-06, pitch 2.5, width 6 mm, length 285 mm, 114 teeth, closed-loop
ATTI • Code 039410 • CF CPOT02028506
Toothed belt T2.5- 285-06, pitch 2.5, width 6 mm, length 285 mm, 114 teeth, closed-loop
List price 14,18 € /pc.
Online 7,80 € /pc.
On Order
(Ship. 6-7 days)
T2.5 timing belt - 305-06, pitch 2.5, width 6 mm, length 305 mm, 122 teeth, closed loop
ATTI • Code 039411 • CF CPOT02030506
T2.5 timing belt - 305-06, pitch 2.5, width 6 mm, length 305 mm, 122 teeth, closed loop
List price 14,63 € /pc.
Online 8,05 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T2.5- 317-06, pitch 2.5, width 6 mm, length 317 mm, 126.8 teeth, closed loop
ATTI • Code 039412 • CF CPOT02031706
Toothed belt T2.5- 317-06, pitch 2.5, width 6 mm, length 317 mm, 126.8 teeth, closed loop
List price 14,63 € /pc.
Online 8,05 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T2.5- 330-06, pitch 2.5, width 6 mm, length 330 mm, 132 teeth, closed loop
ATTI • Code 039413 • CF CPOT02033006
Toothed belt T2.5- 330-06, pitch 2.5, width 6 mm, length 330 mm, 132 teeth, closed loop
List price 14,63 € /pc.
Online 8,05 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T2.5- 380-06, pitch 2.5, width 6 mm, length 380 mm, 152 teeth, closed loop
ATTI • Code 039414 • CF CPOT02038006
Toothed belt T2.5- 380-06, pitch 2.5, width 6 mm, length 380 mm, 152 teeth, closed loop
List price 17,20 € /pc.
Online 9,46 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T2.5- 420-06, pitch 2.5, width 6 mm, length 420 mm, 168 teeth, closed loop
ATTI • Code 039415 • CF CPOT02042006
Toothed belt T2.5- 420-06, pitch 2.5, width 6 mm, length 420 mm, 168 teeth, closed loop
List price 19,06 € /pc.
Online 10,49 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T2.5- 480-06, pitch 2.5, width 6 mm, length 480 mm, 192 teeth, closed loop
ATTI • Code 039416 • CF CPOT02048006
Toothed belt T2.5- 480-06, pitch 2.5, width 6 mm, length 480 mm, 192 teeth, closed loop
List price 19,94 € /pc.
Online 10,97 € /pc.
On Order
(Ship. 6-7 days)
T2.5 timing belt - 500-06, pitch 2.5, width 6 mm, length 500 mm, 200 teeth, closed loop
ATTI • Code 039417 • CF CPOT02050006
T2.5 timing belt - 500-06, pitch 2.5, width 6 mm, length 500 mm, 200 teeth, closed loop
List price 20,03 € /pc.
Online 11,02 € /pc.
On Order
(Ship. 6-7 days)
T2.5- 600-06 timing belt, pitch 2.5, width 6 mm, length 600 mm, 240 teeth, closed loop
ATTI • Code 039418 • CF CPOT02060006
T2.5- 600-06 timing belt, pitch 2.5, width 6 mm, length 600 mm, 240 teeth, closed loop
List price 20,52 € /pc.
Online 11,29 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T2.5- 620-06, pitch 2.5, width 6 mm, length 620 mm, 248 teeth, closed loop
ATTI • Code 039419 • CF CPOT02062006
Toothed belt T2.5- 620-06, pitch 2.5, width 6 mm, length 620 mm, 248 teeth, closed loop
List price 21,23 € /pc.
Online 11,68 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T2.5- 780-06, pitch 2.5, width 6 mm, length 780 mm, 312 teeth, closed loop
ATTI • Code 039421 • CF CPOT02078006
Toothed belt T2.5- 780-06, pitch 2.5, width 6 mm, length 780 mm, 312 teeth, closed loop
List price 26,73 € /pc.
Online 14,70 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T2.5- 915-06, pitch 2.5, width 6 mm, length 915 mm, 366 teeth, endless loop
ATTI • Code 039422 • CF CPOT02091506
Toothed belt T2.5- 915-06, pitch 2.5, width 6 mm, length 915 mm, 366 teeth, endless loop
List price 28,46 € /pc.
Online 15,65 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5- 165-16, pitch 5, width 16 mm, length 165 mm, 33 teeth, closed loop
ATTI • Code 039424 • CF CPOT05016516
Toothed belt T5- 165-16, pitch 5, width 16 mm, length 165 mm, 33 teeth, closed loop
List price 25,46 € /pc.
Online 14,01 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 165-25, pitch 5, width 25 mm, length 165 mm, 33 teeth, closed loop
ATTI • Code 039425 • CF CPOT05016525
T5 timing belt - 165-25, pitch 5, width 25 mm, length 165 mm, 33 teeth, closed loop
List price 39,79 € /pc.
Online 21,88 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 185-16, pitch 5, width 16 mm, length 185 mm, 37 teeth, closed loop
ATTI • Code 039427 • CF CPOT05018516
T5 timing belt - 185-16, pitch 5, width 16 mm, length 185 mm, 37 teeth, closed loop
List price 25,46 € /pc.
Online 14,01 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 185-25, pitch 5, width 25 mm, length 185 mm, 37 teeth, closed loop
ATTI • Code 039428 • CF CPOT05018525
T5 timing belt - 185-25, pitch 5, width 25 mm, length 185 mm, 37 teeth, closed loop
List price 39,79 € /pc.
Online 21,88 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 185-10, pitch 5, width 10 mm, length 185 mm, 37 teeth, closed loop
ATTI • Code 039429 • CF CPOT05018510
T5 timing belt - 185-10, pitch 5, width 10 mm, length 185 mm, 37 teeth, closed loop
List price 15,92 € /pc.
Online 8,75 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 200-16, pitch 5, width 16 mm, length 200 mm, 40 teeth, closed loop
ATTI • Code 039430 • CF CPOT05020016
T5 timing belt - 200-16, pitch 5, width 16 mm, length 200 mm, 40 teeth, closed loop
List price 25,90 € /pc.
Online 14,25 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 200-25, pitch 5, width 25 mm, length 200 mm, 40 teeth, closed loop
ATTI • Code 039431 • CF CPOT05020025
T5 timing belt - 200-25, pitch 5, width 25 mm, length 200 mm, 40 teeth, closed loop
List price 40,46 € /pc.
Online 22,26 € /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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