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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- 510-16, pitch 5, width 16 mm, length 510 mm, 102 teeth, closed loop
ATTI • Code 039499 • CF CPOT05051016
Toothed belt T5- 510-16, pitch 5, width 16 mm, length 510 mm, 102 teeth, closed loop
List price 33,80 € /pc.
Online 18,59 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5- 510-25, pitch 5, width 25 mm, length 510 mm, 102 teeth, closed loop
ATTI • Code 039500 • CF CPOT05051025
Toothed belt T5- 510-25, pitch 5, width 25 mm, length 510 mm, 102 teeth, closed loop
List price 52,82 € /pc.
Online 29,05 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5- 525-10, pitch 5, width 10 mm, length 525 mm, 105 teeth, closed loop
ATTI • Code 039501 • CF CPOT05052510
Toothed belt T5- 525-10, pitch 5, width 10 mm, length 525 mm, 105 teeth, closed loop
List price 21,31 € /pc.
Online 11,72 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 525 - 16, pitch 5, width 16 mm, length 525 mm, 105 teeth, closed loop
ATTI • Code 039502 • CF CPOT05052516
T5 timing belt - 525 - 16, pitch 5, width 16 mm, length 525 mm, 105 teeth, closed loop
List price 34,10 € /pc.
Online 18,76 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 545-10, pitch 5, width 10 mm, length 545 mm, 109 teeth, closed loop
ATTI • Code 039504 • CF CPOT05054510
T5 timing belt - 545-10, pitch 5, width 10 mm, length 545 mm, 109 teeth, closed loop
List price 21,86 € /pc.
Online 12,02 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 545-25, pitch 5, width 25 mm, length 545 mm, 109 teeth, closed loop
ATTI • Code 039506 • CF CPOT05054525
T5 toothed belt - 545-25, pitch 5, width 25 mm, length 545 mm, 109 teeth, closed loop
List price 54,64 € /pc.
Online 30,05 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 545-16, pitch 5, width 16 mm, length 545 mm, 109 teeth, closed loop
ATTI • Code 039507 • CF CPOT05054516
T5 timing belt - 545-16, pitch 5, width 16 mm, length 545 mm, 109 teeth, closed loop
List price 34,97 € /pc.
Online 19,23 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 550-10, pitch 5, width 10 mm, length 550 mm, 110 teeth, closed loop
ATTI • Code 039508 • CF CPOT05055010
T5 toothed belt - 550-10, pitch 5, width 10 mm, length 550 mm, 110 teeth, closed loop
List price 21,86 € /pc.
Online 12,02 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 550-16, pitch 5, width 16 mm, length 550 mm, 110 teeth, endless ring
ATTI • Code 039509 • CF CPOT05055016
T5 toothed belt - 550-16, pitch 5, width 16 mm, length 550 mm, 110 teeth, endless ring
List price 34,97 € /pc.
Online 19,23 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 550-25, pitch 5, width 25 mm, length 550 mm, 110 teeth, closed loop
ATTI • Code 039510 • CF CPOT05055025
T5 timing belt - 550-25, pitch 5, width 25 mm, length 550 mm, 110 teeth, closed loop
List price 54,64 € /pc.
Online 30,05 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 560-10, pitch 5, width 10 mm, length 560 mm, 112 teeth, closed loop
ATTI • Code 039511 • CF CPOT05056010
T5 toothed belt - 560-10, pitch 5, width 10 mm, length 560 mm, 112 teeth, closed loop
List price 22,68 € /pc.
Online 12,47 € /pc.
On Order
(Ship. 6-7 days)
Timing belt T5- 560-16, pitch 5, width 16 mm, length 560 mm, 112 teeth, closed loop
ATTI • Code 039512 • CF CPOT05056016
Timing belt T5- 560-16, pitch 5, width 16 mm, length 560 mm, 112 teeth, closed loop
List price 36,30 € /pc.
Online 19,97 € /pc.
On Order
(Ship. 6-7 days)
Timing belt T5- 560-25, pitch 5, width 25 mm, length 560 mm, 112 teeth, closed loop
ATTI • Code 039513 • CF CPOT05056025
Timing belt T5- 560-25, pitch 5, width 25 mm, length 560 mm, 112 teeth, closed loop
List price 56,71 € /pc.
Online 31,19 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 575-10, pitch 5, width 10 mm, length 575 mm, 115 teeth, closed loop
ATTI • Code 039514 • CF CPOT05057510
T5 timing belt - 575-10, pitch 5, width 10 mm, length 575 mm, 115 teeth, closed loop
List price 23,14 € /pc.
Online 12,72 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 575-16, pitch 5, width 16 mm, length 575 mm, 115 teeth, closed loop
ATTI • Code 039515 • CF CPOT05057516
T5 timing belt - 575-16, pitch 5, width 16 mm, length 575 mm, 115 teeth, closed loop
List price 37,02 € /pc.
Online 20,36 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 575-25, pitch 5, width 25 mm, length 575 mm, 115 teeth, closed loop
ATTI • Code 039516 • CF CPOT05057525
T5 timing belt - 575-25, pitch 5, width 25 mm, length 575 mm, 115 teeth, closed loop
List price 57,84 € /pc.
Online 31,81 € /pc.
On Order
(Ship. 6-7 days)
Timing belt T5- 610-10, pitch 5, width 10 mm, length 610 mm, 122 teeth, closed loop
ATTI • Code 039517 • CF CPOT05061010
Timing belt T5- 610-10, pitch 5, width 10 mm, length 610 mm, 122 teeth, closed loop
List price 24,50 € /pc.
Online 13,48 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 610-16, pitch 5, width 16 mm, length 610 mm, 122 teeth, closed loop
ATTI • Code 039518 • CF CPOT05061016
T5 timing belt - 610-16, pitch 5, width 16 mm, length 610 mm, 122 teeth, closed loop
List price 39,22 € /pc.
Online 21,57 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 610-25, pitch 5, width 25 mm, length 610 mm, 122 teeth, closed loop
ATTI • Code 039519 • CF CPOT05061025
T5 timing belt - 610-25, pitch 5, width 25 mm, length 610 mm, 122 teeth, closed loop
List price 61,28 € /pc.
Online 33,70 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 620-10, pitch 5, width 10 mm, length 620 mm, 124 teeth, closed loop
ATTI • Code 039520 • CF CPOT05062010
T5 timing belt - 620-10, pitch 5, width 10 mm, length 620 mm, 124 teeth, closed loop
List price 25,25 € /pc.
Online 13,89 € /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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P.IVA 05984490150 | Codice SDI: A4707H7 | Rea: MI-1062427 | Capitale Sociale: 100.000,00 €