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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 timing belt - 780-16, pitch 5, width 16 mm, length 780 mm, 156 teeth, closed loop
ATTI • Code 039551 • CF CPOT05078016
T5 timing belt - 780-16, pitch 5, width 16 mm, length 780 mm, 156 teeth, closed loop
List price 44,34 € /pc.
Online 24,38 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 780-25, pitch 5, width 25 mm, length 780 mm, 156 teeth, closed loop
ATTI • Code 039552 • CF CPOT05078025
T5 timing belt - 780-25, pitch 5, width 25 mm, length 780 mm, 156 teeth, closed loop
List price 69,27 € /pc.
Online 38,10 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 815-10, pitch 5, width 10 mm, length 815 mm, 163 teeth, closed loop
ATTI • Code 039553 • CF CPOT05081510
T5 toothed belt - 815-10, pitch 5, width 10 mm, length 815 mm, 163 teeth, closed loop
List price 27,98 € /pc.
Online 15,39 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 815-16, pitch 5, width 16 mm, length 815 mm, 163 teeth, closed loop
ATTI • Code 039554 • CF CPOT05081516
T5 timing belt - 815-16, pitch 5, width 16 mm, length 815 mm, 163 teeth, closed loop
List price 44,78 € /pc.
Online 24,63 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 815-25, pitch 5, width 25 mm, length 815 mm, 163 teeth, closed loop
ATTI • Code 039555 • CF CPOT05081525
T5 timing belt - 815-25, pitch 5, width 25 mm, length 815 mm, 163 teeth, closed loop
List price 69,96 € /pc.
Online 38,48 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 840-10, pitch 5, width 10 mm, length 840 mm, 168 teeth, closed loop
ATTI • Code 039556 • CF CPOT05084010
T5 timing belt - 840-10, pitch 5, width 10 mm, length 840 mm, 168 teeth, closed loop
List price 28,26 € /pc.
Online 15,55 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 840-16, pitch 5, width 16 mm, length 840 mm, 168 teeth, closed loop
ATTI • Code 039557 • CF CPOT05084016
T5 toothed belt - 840-16, pitch 5, width 16 mm, length 840 mm, 168 teeth, closed loop
List price 45,21 € /pc.
Online 24,87 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 840-25, pitch 5, width 25 mm, length 840 mm, 168 teeth, closed loop
ATTI • Code 039558 • CF CPOT05084025
T5 toothed belt - 840-25, pitch 5, width 25 mm, length 840 mm, 168 teeth, closed loop
List price 70,64 € /pc.
Online 38,85 € /pc.
On Order
(Ship. 6-7 days)
T10 timing belt - 400-25, pitch 10, width 25 mm, length 400 mm, 40 teeth, closed loop
ATTI • Code 039560 • CF CPOT10040025
T10 timing belt - 400-25, pitch 10, width 25 mm, length 400 mm, 40 teeth, closed loop
List price 56,47 € /pc.
Online 31,06 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 900-16, pitch 5, width 16 mm, length 900 mm, 180 teeth, closed loop
ATTI • Code 039561 • CF CPOT05090016
T5 timing belt - 900-16, pitch 5, width 16 mm, length 900 mm, 180 teeth, closed loop
List price 47,11 € /pc.
Online 25,91 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 900-25, pitch 5, width 25 mm, length 900 mm, 180 teeth, closed loop
ATTI • Code 039562 • CF CPOT05090025
T5 timing belt - 900-25, pitch 5, width 25 mm, length 900 mm, 180 teeth, closed loop
List price 73,61 € /pc.
Online 40,49 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 990-10, pitch 5, width 10 mm, length 990 mm, 198 teeth, closed loop
ATTI • Code 039563 • CF CPOT05099010
T5 toothed belt - 990-10, pitch 5, width 10 mm, length 990 mm, 198 teeth, closed loop
List price 32,46 € /pc.
Online 17,86 € /pc.
On Order
(Ship. 6-7 days)
Timing belt T5- 990-16, pitch 5, width 16 mm, length 990 mm, 198 teeth, closed loop
ATTI • Code 039564 • CF CPOT05099016
Timing belt T5- 990-16, pitch 5, width 16 mm, length 990 mm, 198 teeth, closed loop
List price 51,94 € /pc.
Online 28,56 € /pc.
On Order
(Ship. 6-7 days)
T5-1075-10 toothed belt, pitch 5, width 10 mm, length 1075 mm, 215 teeth, closed loop
ATTI • Code 039566 • CF CPOT05107510
T5-1075-10 toothed belt, pitch 5, width 10 mm, length 1075 mm, 215 teeth, closed loop
List price 35,21 € /pc.
Online 19,37 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5-1075-16, pitch 5, width 16 mm, length 1075 mm, 215 teeth, closed loop
ATTI • Code 039567 • CF CPOT05107516
Toothed belt T5-1075-16, pitch 5, width 16 mm, length 1075 mm, 215 teeth, closed loop
List price 56,33 € /pc.
Online 30,98 € /pc.
On Order
(Ship. 6-7 days)
T5-1100-10 timing belt, pitch 5, width 10 mm, length 1100 mm, 220 teeth, closed loop
ATTI • Code 039569 • CF CPOT05110010
T5-1100-10 timing belt, pitch 5, width 10 mm, length 1100 mm, 220 teeth, closed loop
List price 36,03 € /pc.
Online 19,82 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5-1100-16, pitch 5, width 16 mm, length 1100 mm, 220 teeth, closed loop
ATTI • Code 039570 • CF CPOT05110016
Toothed belt T5-1100-16, pitch 5, width 16 mm, length 1100 mm, 220 teeth, closed loop
List price 57,65 € /pc.
Online 31,71 € /pc.
On Order
(Ship. 6-7 days)
T5-1215-10 toothed belt, pitch 5, width 10 mm, length 1215 mm, 243 teeth, closed loop
ATTI • Code 039572 • CF CPOT05121510
T5-1215-10 toothed belt, pitch 5, width 10 mm, length 1215 mm, 243 teeth, closed loop
List price 42,34 € /pc.
Online 23,29 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5-1215-16, pitch 5, width 16 mm, length 1215 mm, 243 teeth, closed loop
ATTI • Code 039573 • CF CPOT05121516
Toothed belt T5-1215-16, pitch 5, width 16 mm, length 1215 mm, 243 teeth, closed loop
List price 67,76 € /pc.
Online 37,27 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5-1315-10, pitch 5, width 10 mm, length 1315 mm, 263 teeth, closed loop
ATTI • Code 039575 • CF CPOT05131510
Toothed belt T5-1315-10, pitch 5, width 10 mm, length 1315 mm, 263 teeth, closed loop
List price 43,53 € /pc.
Online 23,94 € /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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A.T.T.I. Srl - Via f.lli Cervi 3 - 20063 Cernusco sul Naviglio (MI) - IT
P.IVA 05984490150 | Codice SDI: A4707H7 | Rea: MI-1062427 | Capitale Sociale: 100.000,00 €