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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 synchronous belt - 620-16, pitch 5, width 16 mm, length 620 mm, 124 teeth, closed loop
ATTI • Code 039521 • CF CPOT05062016
T5 synchronous belt - 620-16, pitch 5, width 16 mm, length 620 mm, 124 teeth, closed loop
List price 40,39 € /pc.
Online 22,21 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 630-16, pitch 5, width 16 mm, length 630 mm, 126 teeth, closed loop
ATTI • Code 039524 • CF CPOT05063016
T5 timing belt - 630-16, pitch 5, width 16 mm, length 630 mm, 126 teeth, closed loop
List price 40,97 € /pc.
Online 22,53 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 640-10, pitch 5, width 10 mm, length 640 mm, 128 teeth, closed loop
ATTI • Code 039526 • CF CPOT05064010
T5 timing belt - 640-10, pitch 5, width 10 mm, length 640 mm, 128 teeth, closed loop
List price 25,88 € /pc.
Online 14,23 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 640-16, pitch 5, width 16 mm, length 640 mm, 128 teeth, closed loop
ATTI • Code 039527 • CF CPOT05064016
T5 timing belt - 640-16, pitch 5, width 16 mm, length 640 mm, 128 teeth, closed loop
List price 41,42 € /pc.
Online 22,78 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 640-25, pitch 5, width 25 mm, length 640 mm, 128 teeth, closed loop
ATTI • Code 039528 • CF CPOT05064025
T5 toothed belt - 640-25, pitch 5, width 25 mm, length 640 mm, 128 teeth, closed loop
List price 64,70 € /pc.
Online 35,59 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 650-10, pitch 5, width 10 mm, length 650 mm, 130 teeth, closed loop
ATTI • Code 039529 • CF CPOT05065010
T5 toothed belt - 650-10, pitch 5, width 10 mm, length 650 mm, 130 teeth, closed loop
List price 26,25 € /pc.
Online 14,44 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 650-25, pitch 5, width 25 mm, length 650 mm, 130 teeth, closed loop
ATTI • Code 039531 • CF CPOT05065025
T5 timing belt - 650-25, pitch 5, width 25 mm, length 650 mm, 130 teeth, closed loop
List price 65,62 € /pc.
Online 36,09 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 660-10, pitch 5, width 10 mm, length 660 mm, 132 teeth, closed loop
ATTI • Code 039532 • CF CPOT05066010
T5 timing belt - 660-10, pitch 5, width 10 mm, length 660 mm, 132 teeth, closed loop
List price 26,98 € /pc.
Online 14,84 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 660-16, pitch 5, width 16 mm, length 660 mm, 132 teeth, closed loop
ATTI • Code 039533 • CF CPOT05066016
T5 timing belt - 660-16, pitch 5, width 16 mm, length 660 mm, 132 teeth, closed loop
List price 43,17 € /pc.
Online 23,74 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5- 660-25, pitch 5, width 25 mm, length 660 mm, 132 teeth, closed loop
ATTI • Code 039534 • CF CPOT05066025
Toothed belt T5- 660-25, pitch 5, width 25 mm, length 660 mm, 132 teeth, closed loop
List price 67,44 € /pc.
Online 37,09 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 690-16, pitch 5, width 16 mm, length 690 mm, 138 teeth, continuous loop
ATTI • Code 039536 • CF CPOT05069016
T5 toothed belt - 690-16, pitch 5, width 16 mm, length 690 mm, 138 teeth, continuous loop
List price 43,32 € /pc.
Online 23,82 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 700-10, pitch 5, width 10 mm, length 700 mm, 140 teeth, closed loop
ATTI • Code 039538 • CF CPOT05070010
T5 timing belt - 700-10, pitch 5, width 10 mm, length 700 mm, 140 teeth, closed loop
List price 27,08 € /pc.
Online 14,89 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5- 700-16, pitch 5, width 16 mm, length 700 mm, 140 teeth, closed loop
ATTI • Code 039539 • CF CPOT05070016
Toothed belt T5- 700-16, pitch 5, width 16 mm, length 700 mm, 140 teeth, closed loop
List price 43,32 € /pc.
Online 23,82 € /pc.
On Order
(Ship. 6-7 days)
T5 toothed belt - 720-10, pitch 5, width 10 mm, length 720 mm, 144 teeth, closed loop
ATTI • Code 039541 • CF CPOT05072010
T5 toothed belt - 720-10, pitch 5, width 10 mm, length 720 mm, 144 teeth, closed loop
List price 27,26 € /pc.
Online 14,99 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 720-16, pitch 5, width 16 mm, length 720 mm, 144 teeth, looped
ATTI • Code 039542 • CF CPOT05072016
T5 timing belt - 720-16, pitch 5, width 16 mm, length 720 mm, 144 teeth, looped
List price 43,60 € /pc.
Online 23,98 € /pc.
On Order
(Ship. 6-7 days)
Timing belt T5- 750-10, pitch 5, width 10 mm, length 750 mm, 150 teeth, closed-loop
ATTI • Code 039544 • CF CPOT05075010
Timing belt T5- 750-10, pitch 5, width 10 mm, length 750 mm, 150 teeth, closed-loop
List price 27,35 € /pc.
Online 15,04 € /pc.
On Order
(Ship. 6-7 days)
T10 timing belt - 400-16, pitch 10, width 16 mm, length 400 mm, 40 teeth, closed loop
ATTI • Code 039545 • CF CPOT10040016
T10 timing belt - 400-16, pitch 10, width 16 mm, length 400 mm, 40 teeth, closed loop
List price 36,14 € /pc.
Online 19,88 € /pc.
On Order
(Ship. 6-7 days)
Toothed belt T5- 750-16, pitch 5, width 16 mm, length 750 mm, 150 teeth, closed loop
ATTI • Code 039548 • CF CPOT05075016
Toothed belt T5- 750-16, pitch 5, width 16 mm, length 750 mm, 150 teeth, closed loop
List price 43,76 € /pc.
Online 24,07 € /pc.
On Order
(Ship. 6-7 days)
T5 synchronous belt - 260-10, pitch 5, width 10 mm, length 260 mm, 52 teeth, closed loop
ATTI • Code 039549 • CF CPOT05026010
T5 synchronous belt - 260-10, pitch 5, width 10 mm, length 260 mm, 52 teeth, closed loop
List price 16,64 € /pc.
Online 9,15 € /pc.
On Order
(Ship. 6-7 days)
T5 timing belt - 780-10, pitch 5, width 10 mm, length 780 mm, 156 teeth, closed loop
ATTI • Code 039550 • CF CPOT05078010
T5 timing belt - 780-10, pitch 5, width 10 mm, length 780 mm, 156 teeth, closed loop
List price 27,70 € /pc.
Online 15,24 € /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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