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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 T5- 280-16, pitch 5, width 16 mm, length 280 mm, 56 teeth, endless loop
ATTI • Code 039454 • CF CPOT05028016
Toothed belt T5- 280-16, pitch 5, width 16 mm, length 280 mm, 56 teeth, endless loop
List price 26,78 € /pc.
Online 14,73 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 295-10, pitch 5, width 10 mm, length 295 mm, 59 teeth, closed loop
ATTI • Code 039456 • CF CPOT05029510
T5 toothed belt - 295-10, pitch 5, width 10 mm, length 295 mm, 59 teeth, closed loop
List price 17,19 € /pc.
Online 9,45 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 295-16, pitch 5, width 16 mm, length 295 mm, 59 teeth, closed loop
ATTI • Code 039457 • CF CPOT05029516
T5 toothed belt - 295-16, pitch 5, width 16 mm, length 295 mm, 59 teeth, closed loop
List price 27,51 € /pc.
Online 15,13 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 305-10, pitch 5, width 10 mm, length 305 mm, 61 teeth, closed loop
ATTI • Code 039459 • CF CPOT05030510
T5 timing belt - 305-10, pitch 5, width 10 mm, length 305 mm, 61 teeth, closed loop
List price 17,47 € /pc.
Online 9,61 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 305-25, pitch 5, width 25 mm, length 305 mm, 61 teeth, closed loop
ATTI • Code 039461 • CF CPOT05030525
T5 timing belt - 305-25, pitch 5, width 25 mm, length 305 mm, 61 teeth, closed loop
List price 43,66 € /pc.
Online 24,02 € /pc.
On Order
(Ship. 6-7 days)
T5 belt - 330-10, pitch 5, width 10 mm, length 330 mm, 66 teeth, closed loop
ATTI • Code 039462 • CF CPOT05033010
T5 belt - 330-10, pitch 5, width 10 mm, length 330 mm, 66 teeth, closed loop
List price 17,64 € /pc.
Online 9,70 € /pc.
On Order
(Ship. 6-7 days)
T5 tooth belt - 330-16, pitch 5, width 16 mm, length 330 mm, 66 teeth, closed loop
ATTI • Code 039463 • CF CPOT05033016
T5 tooth belt - 330-16, pitch 5, width 16 mm, length 330 mm, 66 teeth, closed loop
List price 28,25 € /pc.
Online 15,54 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 330-25, pitch 5, width 25 mm, length 330 mm, 66 teeth, looped
ATTI • Code 039464 • CF CPOT05033025
T5 timing belt - 330-25, pitch 5, width 25 mm, length 330 mm, 66 teeth, looped
List price 44,13 € /pc.
Online 24,27 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 340-10, pitch 5, width 10 mm, length 340 mm, 68 teeth, closed loop
ATTI • Code 039465 • CF CPOT05034010
T5 toothed belt - 340-10, pitch 5, width 10 mm, length 340 mm, 68 teeth, closed loop
List price 17,92 € /pc.
Online 9,86 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 340-16, pitch 5, width 16 mm, length 340 mm, 68 teeth, closed loop
ATTI • Code 039466 • CF CPOT05034016
T5 toothed belt - 340-16, pitch 5, width 16 mm, length 340 mm, 68 teeth, closed loop
List price 28,68 € /pc.
Online 15,77 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 340-25, pitch 5, width 25 mm, length 340 mm, 68 teeth, closed loop
ATTI • Code 039467 • CF CPOT05034025
T5 toothed belt - 340-25, pitch 5, width 25 mm, length 340 mm, 68 teeth, closed loop
List price 44,81 € /pc.
Online 24,64 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 350-10, pitch 5, width 10 mm, length 350 mm, 70 teeth, closed loop
ATTI • Code 039468 • CF CPOT05035010
T5 toothed belt - 350-10, pitch 5, width 10 mm, length 350 mm, 70 teeth, closed loop
List price 18,20 € /pc.
Online 10,01 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 350-16, pitch 5, width 16 mm, development 350 mm, 70 teeth, closed loop
ATTI • Code 039469 • CF CPOT05035016
T5 toothed belt - 350-16, pitch 5, width 16 mm, development 350 mm, 70 teeth, closed loop
List price 29,12 € /pc.
Online 16,01 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 350-25, pitch 5, width 25 mm, length 350 mm, 70 teeth, closed loop
ATTI • Code 039470 • CF CPOT05035025
T5 timing belt - 350-25, pitch 5, width 25 mm, length 350 mm, 70 teeth, closed loop
List price 45,49 € /pc.
Online 25,02 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 355-10, pitch 5, width 10 mm, length 355 mm, 71 teeth, closed ring
ATTI • Code 039471 • CF CPOT05035510
T5 timing belt - 355-10, pitch 5, width 10 mm, length 355 mm, 71 teeth, closed ring
List price 18,38 € /pc.
Online 10,11 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 355-16, pitch 5, width 16 mm, length 355 mm, 71 teeth, closed loop
ATTI • Code 039472 • CF CPOT05035516
T5 toothed belt - 355-16, pitch 5, width 16 mm, length 355 mm, 71 teeth, closed loop
List price 29,42 € /pc.
Online 16,18 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 355-25, pitch 5, width 25 mm, length 355 mm, 71 teeth, closed loop
ATTI • Code 039473 • CF CPOT05035525
T5 timing belt - 355-25, pitch 5, width 25 mm, length 355 mm, 71 teeth, closed loop
List price 45,96 € /pc.
Online 25,28 € /pc.
On Order
(Ship. 6-7 days)
T5- 365-10 timing belt, pitch 5, width 10 mm, length 365 mm, 73 teeth, closed loop
ATTI • Code 039474 • CF CPOT05036510
T5- 365-10 timing belt, pitch 5, width 10 mm, length 365 mm, 73 teeth, closed loop
List price 18,47 € /pc.
Online 10,16 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 365-16, pitch 5, width 16 mm, length 365 mm, 73 teeth, closed loop
ATTI • Code 039475 • CF CPOT05036516
T5 toothed belt - 365-16, pitch 5, width 16 mm, length 365 mm, 73 teeth, closed loop
List price 29,56 € /pc.
Online 16,26 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 365-25, pitch 5, width 25 mm, length 365 mm, 73 teeth, closed loop
ATTI • Code 039476 • CF CPOT05036525
T5 timing belt - 365-25, pitch 5, width 25 mm, length 365 mm, 73 teeth, closed loop
List price 46,18 € /pc.
Online 25,40 € /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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