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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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AT5 toothed belt - 825-16, pitch 5, width 16 mm, length 825 mm, 165 teeth, closed loop
ATTI • Code 040116 • CF CPOAT05082516
AT5 toothed belt - 825-16, pitch 5, width 16 mm, length 825 mm, 165 teeth, closed loop
List price 54,00 € /pc.
Online 29,70 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 825-25, pitch 5, width 25 mm, length 825 mm, 165 teeth, closed loop
ATTI • Code 040117 • CF CPOAT05082525
AT5 toothed belt - 825-25, pitch 5, width 25 mm, length 825 mm, 165 teeth, closed loop
List price 84,36 € /pc.
Online 46,40 € /pc.
On Order
(Ship. 6-7 days)
AT5 timing belt - 975-10, pitch 5, width 10 mm, length 975 mm, 195 teeth, closed loop
ATTI • Code 040118 • CF CPOAT05097510
AT5 timing belt - 975-10, pitch 5, width 10 mm, length 975 mm, 195 teeth, closed loop
List price 38,96 € /pc.
Online 21,43 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 975-16, pitch 5, width 16 mm, length 975 mm, 195 teeth, closed loop
ATTI • Code 040119 • CF CPOAT05097516
AT5 toothed belt - 975-16, pitch 5, width 16 mm, length 975 mm, 195 teeth, closed loop
List price 62,33 € /pc.
Online 34,28 € /pc.
On Order
(Ship. 6-7 days)
AT5 timing belt - 975-25, pitch 5, width 25 mm, length 975 mm, 195 teeth, endless loop
ATTI • Code 040120 • CF CPOAT05097525
AT5 timing belt - 975-25, pitch 5, width 25 mm, length 975 mm, 195 teeth, endless loop
List price 97,40 € /pc.
Online 53,57 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt -1050-10, pitch 5, width 10 mm, length 1050 mm, 210 teeth, closed loop
ATTI • Code 040121 • CF CPOAT05105010
AT5 toothed belt -1050-10, pitch 5, width 10 mm, length 1050 mm, 210 teeth, closed loop
List price 42,43 € /pc.
Online 23,34 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt -1050-16, pitch 5, width 16 mm, length 1050 mm, 210 teeth, closed loop
ATTI • Code 040122 • CF CPOAT05105016
AT5 toothed belt -1050-16, pitch 5, width 16 mm, length 1050 mm, 210 teeth, closed loop
List price 67,90 € /pc.
Online 37,35 € /pc.
On Order
(Ship. 6-7 days)
AT5 timing belt -1050-25, pitch 5, width 25 mm, development 1050 mm, 210 teeth, closed loop
ATTI • Code 040123 • CF CPOAT05105025
AT5 timing belt -1050-25, pitch 5, width 25 mm, development 1050 mm, 210 teeth, closed loop
List price 106,09 € /pc.
Online 58,35 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt -1500-16, pitch 5, width 16 mm, length 1500 mm, 300 teeth, closed loop
ATTI • Code 040128 • CF CPOAT05150016
AT5 toothed belt -1500-16, pitch 5, width 16 mm, length 1500 mm, 300 teeth, closed loop
List price 87,66 € /pc.
Online 48,21 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt -1500-25, pitch 5, width 25 mm, length 1500 mm, 300 teeth, closed loop
ATTI • Code 040129 • CF CPOAT05150025
AT5 toothed belt -1500-25, pitch 5, width 25 mm, length 1500 mm, 300 teeth, closed loop
List price 136,95 € /pc.
Online 75,32 € /pc.
On Order
(Ship. 6-7 days)
AT10- 500-16 toothed belt, pitch 10, width 16 mm, length 500 mm, 50 teeth, closed loop
ATTI • Code 040130 • CF CPOAT10050016
AT10- 500-16 toothed belt, pitch 10, width 16 mm, length 500 mm, 50 teeth, closed loop
List price 47,11 € /pc.
Online 25,91 € /pc.
On Order
(Ship. 6-7 days)
AT10- 500-25 timing belt, pitch 10, width 25 mm, length 500 mm, 50 teeth, closed loop
ATTI • Code 040131 • CF CPOAT10050025
AT10- 500-25 timing belt, pitch 10, width 25 mm, length 500 mm, 50 teeth, closed loop
List price 73,61 € /pc.
Online 40,49 € /pc.
On Order
(Ship. 6-7 days)
AT10-500-32 toothed belt, pitch 10, width 32 mm, length 500 mm, 50 teeth, closed loop
ATTI • Code 040132 • CF CPOAT10050032
AT10-500-32 toothed belt, pitch 10, width 32 mm, length 500 mm, 50 teeth, closed loop
List price 94,24 € /pc.
Online 51,83 € /pc.
On Order
(Ship. 6-7 days)
AT10-500-50 timing belt, pitch 10, width 50 mm, length 500 mm, 50 teeth, closed loop
ATTI • Code 040133 • CF CPOAT10050050
AT10-500-50 timing belt, pitch 10, width 50 mm, length 500 mm, 50 teeth, closed loop
List price 147,24 € /pc.
Online 80,98 € /pc.
On Order
(Ship. 6-7 days)
AT10- 560-16 timing belt, pitch 10, width 16 mm, length 560 mm, 56 teeth, closed loop
ATTI • Code 040134 • CF CPOAT10056016
AT10- 560-16 timing belt, pitch 10, width 16 mm, length 560 mm, 56 teeth, closed loop
List price 51,65 € /pc.
Online 28,41 € /pc.
On Order
(Ship. 6-7 days)
AT10- 560-25 timing belt, pitch 10, width 25 mm, length 560 mm, 56 teeth, closed loop
ATTI • Code 040135 • CF CPOAT10056025
AT10- 560-25 timing belt, pitch 10, width 25 mm, length 560 mm, 56 teeth, closed loop
List price 80,71 € /pc.
Online 44,39 € /pc.
On Order
(Ship. 6-7 days)
AT10 timing belt - 560-32, pitch 10, width 32 mm, length 560 mm, 56 teeth, closed loop
ATTI • Code 040136 • CF CPOAT10056032
AT10 timing belt - 560-32, pitch 10, width 32 mm, length 560 mm, 56 teeth, closed loop
List price 103,30 € /pc.
Online 56,82 € /pc.
On Order
(Ship. 6-7 days)
AT10- 560-50 toothed belt, pitch 10, width 50 mm, length 560 mm, 56 teeth, closed loop
ATTI • Code 040137 • CF CPOAT10056050
AT10- 560-50 toothed belt, pitch 10, width 50 mm, length 560 mm, 56 teeth, closed loop
List price 161,41 € /pc.
Online 88,77 € /pc.
On Order
(Ship. 6-7 days)
AT10 timing belt - 610-16, pitch 10, width 16 mm, length 610 mm, 61 teeth, closed loop
ATTI • Code 040138 • CF CPOAT100610016
AT10 timing belt - 610-16, pitch 10, width 16 mm, length 610 mm, 61 teeth, closed loop
List price 52,82 € /pc.
Online 29,05 € /pc.
On Order
(Ship. 6-7 days)
AT10- 610-25 timing belt, pitch 10, width 25 mm, length 610 mm, 61 teeth, closed loop
ATTI • Code 040139 • CF CPOAT100610025
AT10- 610-25 timing belt, pitch 10, width 25 mm, length 610 mm, 61 teeth, closed loop
List price 82,54 € /pc.
Online 45,40 € /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 €