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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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HTD timing belt 736-8M-50, pitch 8M, width 50 mm, length 736 mm, 92 teeth, closed loop
ATTI • Code 062406 • CF HTD07360850
HTD timing belt 736-8M-50, pitch 8M, width 50 mm, length 736 mm, 92 teeth, closed loop
List price 73,48 € /pc.
Online 40,41 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 740-5M-09, pitch 5M, width 9 mm, length 740 mm, 148 teeth, closed loop
ATTI • Code 062407 • CF HTD07400509
HTD toothed belt 740-5M-09, pitch 5M, width 9 mm, length 740 mm, 148 teeth, closed loop
List price 16,67 € /pc.
Online 9,17 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 750-3M-03, pitch 3M, width 3 mm, length 750 mm, 250 teeth, closed loop
ATTI • Code 062408 • CF HTD07500303
HTD toothed belt 750-3M-03, pitch 3M, width 3 mm, length 750 mm, 250 teeth, closed loop
List price 5,81 € /pc.
Online 3,19 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 750-3M-06, pitch 3M, width 6 mm, length 750 mm, 250 teeth, closed loop
ATTI • Code 062409 • CF HTD07500306
HTD toothed belt 750-3M-06, pitch 3M, width 6 mm, length 750 mm, 250 teeth, closed loop
List price 11,64 € /pc.
Online 6,40 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 750-3M-09, pitch 3M, width 9 mm, length 750 mm, 250 teeth, closed loop
ATTI • Code 062410 • CF HTD07500309
HTD timing belt 750-3M-09, pitch 3M, width 9 mm, length 750 mm, 250 teeth, closed loop
List price 17,45 € /pc.
Online 9,60 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 750-3M-15, pitch 3M, width 15 mm, length 750 mm, 250 teeth, closed loop
ATTI • Code 062411 • CF HTD07500315
HTD timing belt 750-3M-15, pitch 3M, width 15 mm, length 750 mm, 250 teeth, closed loop
List price 29,08 € /pc.
Online 15,99 € /pc.
On Order
(Ship. 6-7 days)
HTD tooth belt 753-3M-06, pitch 3M, width 6 mm, length 753 mm, 251 teeth, closed loop
ATTI • Code 062412 • CF HTD07530306
HTD tooth belt 753-3M-06, pitch 3M, width 6 mm, length 753 mm, 251 teeth, closed loop
List price 11,68 € /pc.
Online 6,42 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 753-3M-09, pitch 3M, width 9 mm, length 753 mm, 251 teeth, closed loop
ATTI • Code 062413 • CF HTD07530309
HTD belt 753-3M-09, pitch 3M, width 9 mm, length 753 mm, 251 teeth, closed loop
List price 17,53 € /pc.
Online 9,64 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 753-3M-15, pitch 3M, width 15 mm, length 753 mm, 251 teeth, closed loop
ATTI • Code 062414 • CF HTD07530315
HTD toothed belt 753-3M-15, pitch 3M, width 15 mm, length 753 mm, 251 teeth, closed loop
List price 29,20 € /pc.
Online 16,06 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 755-5M-09, pitch 5M, width 9 mm, length 755 mm, 151 teeth, closed loop
ATTI • Code 062415 • CF HTD07550509
HTD timing belt 755-5M-09, pitch 5M, width 9 mm, length 755 mm, 151 teeth, closed loop
List price 16,96 € /pc.
Online 9,33 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 755-5M-15, pitch 5M, width 15 mm, length 755 mm, 151 teeth, closed loop
ATTI • Code 062416 • CF HTD07550515
HTD timing belt 755-5M-15, pitch 5M, width 15 mm, length 755 mm, 151 teeth, closed loop
List price 28,26 € /pc.
Online 15,54 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 755-5M-25, pitch 5M, width 25 mm, length 755 mm, 151 teeth, closed loop
ATTI • Code 062417 • CF HTD07550525
HTD belt 755-5M-25, pitch 5M, width 25 mm, length 755 mm, 151 teeth, closed loop
List price 47,10 € /pc.
Online 25,90 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 776-8M-85, pitch 8M, width 85 mm, length 776 mm, 97 teeth, closed loop
ATTI • Code 062418 • CF HTD07760885
HTD toothed belt 776-8M-85, pitch 8M, width 85 mm, length 776 mm, 97 teeth, closed loop
List price 131,30 € /pc.
Online 72,22 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 784-8M-20, pitch 8M, width 20 mm, length 784 mm, 98 teeth, closed loop
ATTI • Code 062419 • CF HTD07840820
HTD timing belt 784-8M-20, pitch 8M, width 20 mm, length 784 mm, 98 teeth, closed loop
List price 31,19 € /pc.
Online 17,15 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 784-8M-30, pitch 8M, width 30 mm, length 784 mm, 98 teeth, closed loop
ATTI • Code 062420 • CF HTD07840830
HTD timing belt 784-8M-30, pitch 8M, width 30 mm, length 784 mm, 98 teeth, closed loop
List price 46,78 € /pc.
Online 25,73 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 784-8M-50, pitch 8M, width 50 mm, length 784 mm, 98 teeth, joined in a loop
ATTI • Code 062421 • CF HTD07840850
HTD timing belt 784-8M-50, pitch 8M, width 50 mm, length 784 mm, 98 teeth, joined in a loop
List price 77,98 € /pc.
Online 42,89 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 804-3M-06, pitch 3M, width 6 mm, length 804 mm, 268 teeth, closed loop
ATTI • Code 062422 • CF HTD08040306
HTD timing belt 804-3M-06, pitch 3M, width 6 mm, length 804 mm, 268 teeth, closed loop
List price 12,46 € /pc.
Online 6,85 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 813-3M-09, pitch 3M, width 9 mm, length 813 mm, 271 teeth, closed loop
ATTI • Code 062423 • CF HTD08130309
HTD timing belt 813-3M-09, pitch 3M, width 9 mm, length 813 mm, 271 teeth, closed loop
List price 18,90 € /pc.
Online 10,40 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 824-8M-20, pitch 8M, width 20 mm, length 824 mm, 103 teeth, closed loop
ATTI • Code 062424 • CF HTD08240820
HTD toothed belt 824-8M-20, pitch 8M, width 20 mm, length 824 mm, 103 teeth, closed loop
List price 32,85 € /pc.
Online 18,07 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 824-8M-30, pitch 8M, width 30 mm, length 824 mm, 103 teeth, closed loop
ATTI • Code 062425 • CF HTD08240830
HTD timing belt 824-8M-30, pitch 8M, width 30 mm, length 824 mm, 103 teeth, closed loop
List price 49,27 € /pc.
Online 27,10 € /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 €