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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 650-5M-15, pitch 5M, width 15 mm, length 650 mm, 130 teeth, closed loop
ATTI • Code 062386 • CF HTD06500515
HTD timing belt 650-5M-15, pitch 5M, width 15 mm, length 650 mm, 130 teeth, closed loop
List price 24,32 € /pc.
Online 13,37 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 656-8M-85, pitch 8M, width 85 mm, length 656 mm, 82 teeth, closed loop
ATTI • Code 062387 • CF HTD06560885
HTD timing belt 656-8M-85, pitch 8M, width 85 mm, length 656 mm, 82 teeth, closed loop
List price 111,16 € /pc.
Online 61,14 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 669-3M-06, pitch 3M, width 6 mm, length 669 mm, 223 teeth, closed loop
ATTI • Code 062388 • CF HTD06690306
HTD timing belt 669-3M-06, pitch 3M, width 6 mm, length 669 mm, 223 teeth, closed loop
List price 10,40 € /pc.
Online 5,72 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 669-3M-12, pitch 3M, width 12 mm, length 669 mm, 223 teeth, closed loop
ATTI • Code 062389 • CF HTD06690312
HTD belt 669-3M-12, pitch 3M, width 12 mm, length 669 mm, 223 teeth, closed loop
List price 20,78 € /pc.
Online 11,43 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 672-8M-20, pitch 8M, width 20 mm, length 672 mm, 84 teeth, closed loop
ATTI • Code 062390 • CF HTD06720820
HTD timing belt 672-8M-20, pitch 8M, width 20 mm, length 672 mm, 84 teeth, closed loop
List price 26,84 € /pc.
Online 14,76 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 672-8M-30, pitch 8M, width 30 mm, length 672 mm, 84 teeth, endless loop
ATTI • Code 062391 • CF HTD06720830
HTD timing belt 672-8M-30, pitch 8M, width 30 mm, length 672 mm, 84 teeth, endless loop
List price 40,27 € /pc.
Online 22,15 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 680-8M-20, pitch 8M, width 20 mm, length 680 mm, 85 teeth, closed loop
ATTI • Code 062392 • CF HTD06800820
HTD timing belt 680-8M-20, pitch 8M, width 20 mm, length 680 mm, 85 teeth, closed loop
List price 27,14 € /pc.
Online 14,93 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 680-8M-50, pitch 8M, width 50 mm, length 680 mm, 85 teeth, endless loop
ATTI • Code 062393 • CF HTD06800850
HTD timing belt 680-8M-50, pitch 8M, width 50 mm, length 680 mm, 85 teeth, endless loop
List price 67,86 € /pc.
Online 37,32 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 696-8M-20, pitch 8M, width 20 mm, length 696 mm, 87 teeth, closed loop
ATTI • Code 062394 • CF HTD06960820
HTD toothed belt 696-8M-20, pitch 8M, width 20 mm, length 696 mm, 87 teeth, closed loop
List price 27,74 € /pc.
Online 15,26 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 696-8M-30, pitch 8M, width 30 mm, length 696 mm, 87 teeth, closed loop
ATTI • Code 062395 • CF HTD06960830
HTD timing belt 696-8M-30, pitch 8M, width 30 mm, length 696 mm, 87 teeth, closed loop
List price 41,62 € /pc.
Online 22,89 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 708-3M-06, pitch 3M, width 6 mm, length 708 mm, 236 teeth, closed loop
ATTI • Code 062396 • CF HTD07080306
HTD timing belt 708-3M-06, pitch 3M, width 6 mm, length 708 mm, 236 teeth, closed loop
List price 10,99 € /pc.
Online 6,04 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 708-3M-09, pitch 3M, width 9 mm, length 708 mm, 236 teeth, closed loop
ATTI • Code 062397 • CF HTD07080309
HTD timing belt 708-3M-09, pitch 3M, width 9 mm, length 708 mm, 236 teeth, closed loop
List price 16,48 € /pc.
Online 9,07 € /pc.
On Order
(Ship. 6-7 days)
HTD Timing Belt 708-3M-12, pitch 3M, width 12 mm, length 708 mm, 236 teeth, closed loop
ATTI • Code 062398 • CF HTD07080312
HTD Timing Belt 708-3M-12, pitch 3M, width 12 mm, length 708 mm, 236 teeth, closed loop
List price 21,97 € /pc.
Online 12,08 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 708-3M-15, pitch 3M, width 15 mm, length 708 mm, 236 teeth, closed loop
ATTI • Code 062399 • CF HTD07080315
HTD timing belt 708-3M-15, pitch 3M, width 15 mm, length 708 mm, 236 teeth, closed loop
List price 27,48 € /pc.
Online 15,11 € /pc.
On Order
(Ship. 6-7 days)
HTD 711-3M-06 toothed belt, pitch 3M, width 6 mm, length 711 mm, 237 teeth, closed loop
ATTI • Code 062400 • CF HTD07110306
HTD 711-3M-06 toothed belt, pitch 3M, width 6 mm, length 711 mm, 237 teeth, closed loop
List price 11,03 € /pc.
Online 6,07 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 711-3M-09, pitch 3M, width 9 mm, length 711 mm, 237 teeth, closed loop
ATTI • Code 062401 • CF HTD07110309
HTD timing belt 711-3M-09, pitch 3M, width 9 mm, length 711 mm, 237 teeth, closed loop
List price 16,55 € /pc.
Online 9,10 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 711-3M-12, pitch 3M, width 12 mm, length 711 mm, 237 teeth, closed loop
ATTI • Code 062402 • CF HTD07110312
HTD timing belt 711-3M-12, pitch 3M, width 12 mm, length 711 mm, 237 teeth, closed loop
List price 22,07 € /pc.
Online 12,14 € /pc.
On Order
(Ship. 6-7 days)
HTD 711-3M-15 toothed belt, pitch 3M, width 15 mm, length 711 mm, 237 teeth, closed loop
ATTI • Code 062403 • CF HTD07110315
HTD 711-3M-15 toothed belt, pitch 3M, width 15 mm, length 711 mm, 237 teeth, closed loop
List price 27,59 € /pc.
Online 15,17 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 736-8M-20, pitch 8M, width 20 mm, length 736 mm, 92 teeth, closed loop
ATTI • Code 062404 • CF HTD07360820
HTD timing belt 736-8M-20, pitch 8M, width 20 mm, length 736 mm, 92 teeth, closed loop
List price 29,40 € /pc.
Online 16,17 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 736-8M-30, pitch 8M, width 30 mm, length 736 mm, 92 teeth, closed loop
ATTI • Code 062405 • CF HTD07360830
HTD timing belt 736-8M-30, pitch 8M, width 30 mm, length 736 mm, 92 teeth, closed loop
List price 44,09 € /pc.
Online 24,25 € /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 €