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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 tooth belt - 510-10, pitch 5, width 10 mm, length 510 mm, 102 teeth, endless loop
ATTI • Code 039498 • CF CPOT05051010
T5 tooth belt - 510-10, pitch 5, width 10 mm, length 510 mm, 102 teeth, endless loop
List price 21,12 € /pc.
Online 11,62 € /pc.
In Stock
(Ship. 1-2 days)
T5 timing belt - 525-25, pitch 5, width 25 mm, length 525 mm, 105 teeth, closed loop
ATTI • Code 039503 • CF CPOT05052525
T5 timing belt - 525-25, pitch 5, width 25 mm, length 525 mm, 105 teeth, closed loop
List price 53,27 € /pc.
Online 29,30 € /pc.
In Stock
(Ship. 1-2 days)
T5 timing belt - 620-25, pitch 5, width 25 mm, length 620 mm, 124 teeth, closed loop
ATTI • Code 039522 • CF CPOT05062025
T5 timing belt - 620-25, pitch 5, width 25 mm, length 620 mm, 124 teeth, closed loop
List price 63,10 € /pc.
Online 34,70 € /pc.
In Stock
(Ship. 1-2 days)
Toothed belt T5- 630-10, pitch 5, width 10 mm, length 630 mm, 126 teeth, closed loop
ATTI • Code 039523 • CF CPOT05063010
Toothed belt T5- 630-10, pitch 5, width 10 mm, length 630 mm, 126 teeth, closed loop
List price 25,61 € /pc.
Online 14,08 € /pc.
In Stock
(Ship. 1-2 days)
T5 timing belt - 630-25, pitch 5, width 25 mm, length 630 mm, 126 teeth, closed loop
ATTI • Code 039525 • CF CPOT05063025
T5 timing belt - 630-25, pitch 5, width 25 mm, length 630 mm, 126 teeth, closed loop
List price 64,02 € /pc.
Online 35,21 € /pc.
In Stock
(Ship. 1-2 days)
T5 timing belt - 650-16, pitch 5, width 16 mm, length 650 mm, 130 teeth, closed loop
ATTI • Code 039530 • CF CPOT05065016
T5 timing belt - 650-16, pitch 5, width 16 mm, length 650 mm, 130 teeth, closed loop
List price 41,98 € /pc.
Online 23,09 € /pc.
In Stock
(Ship. 1-2 days)
T5 Timing Belt - 690-10, pitch 5, width 10 mm, length 690 mm, 138 teeth, closed loop
ATTI • Code 039535 • CF CPOT05069010
T5 Timing Belt - 690-10, pitch 5, width 10 mm, length 690 mm, 138 teeth, closed loop
List price 27,08 € /pc.
Online 14,89 € /pc.
In Stock
(Ship. 1-2 days)
T5 timing belt - 690-25, pitch 5, width 25 mm, length 690 mm, 138 teeth, closed loop
ATTI • Code 039537 • CF CPOT05069025
T5 timing belt - 690-25, pitch 5, width 25 mm, length 690 mm, 138 teeth, closed loop
List price 67,68 € /pc.
Online 37,22 € /pc.
In Stock
(Ship. 1-2 days)
T5 toothed belt - 700-25, pitch 5, width 25 mm, length 700 mm, 140 teeth, closed loop
ATTI • Code 039540 • CF CPOT05070025
T5 toothed belt - 700-25, pitch 5, width 25 mm, length 700 mm, 140 teeth, closed loop
List price 67,68 € /pc.
Online 37,22 € /pc.
In Stock
(Ship. 1-2 days)
T5 timing belt - 720-25, pitch 5, width 25 mm, length 720 mm, 144 teeth, closed loop
ATTI • Code 039543 • CF CPOT05072025
T5 timing belt - 720-25, pitch 5, width 25 mm, length 720 mm, 144 teeth, closed loop
List price 68,13 € /pc.
Online 37,47 € /pc.
In Stock
(Ship. 1-2 days)
T5 toothed belt - 750-25, pitch 5, width 25 mm, length 750 mm, 150 teeth, closed loop
ATTI • Code 039547 • CF CPOT05075025
T5 toothed belt - 750-25, pitch 5, width 25 mm, length 750 mm, 150 teeth, closed loop
List price 68,36 € /pc.
Online 37,60 € /pc.
In Stock
(Ship. 1-2 days)
T5 toothed belt - 990-25, pitch 5, width 25 mm, length 990 mm, 198 teeth, closed loop
ATTI • Code 039565 • CF CPOT05099025
T5 toothed belt - 990-25, pitch 5, width 25 mm, length 990 mm, 198 teeth, closed loop
List price 81,16 € /pc.
Online 44,64 € /pc.
In Stock
(Ship. 1-2 days)
Toothed belt T5-1075-25, pitch 5, width 25 mm, length 1075 mm, 215 teeth, closed loop
ATTI • Code 039568 • CF CPOT05107525
Toothed belt T5-1075-25, pitch 5, width 25 mm, length 1075 mm, 215 teeth, closed loop
List price 88,03 € /pc.
Online 48,42 € /pc.
In Stock
(Ship. 1-2 days)
T5-1100-25 timing belt, pitch 5, width 25 mm, length 1100 mm, 220 teeth, closed loop
ATTI • Code 039571 • CF CPOT05110025
T5-1100-25 timing belt, pitch 5, width 25 mm, length 1100 mm, 220 teeth, closed loop
List price 90,08 € /pc.
Online 49,54 € /pc.
In Stock
(Ship. 1-2 days)
Timing belt T5-1215-25, pitch 5, width 25 mm, length 1215 mm, 243 teeth, closed loop
ATTI • Code 039574 • CF CPOT05121525
Timing belt T5-1215-25, pitch 5, width 25 mm, length 1215 mm, 243 teeth, closed loop
List price 105,85 € /pc.
Online 58,22 € /pc.
In Stock
(Ship. 1-2 days)
T5-1380-25 timing belt, pitch 5, width 25 mm, length 1380 mm, 276 teeth, closed loop
ATTI • Code 039580 • CF CPOT05138025
T5-1380-25 timing belt, pitch 5, width 25 mm, length 1380 mm, 276 teeth, closed loop
List price 120,04 € /pc.
Online 66,02 € /pc.
In Stock
(Ship. 1-2 days)
T10-16mm polyurethane timing belt, pitch 10, width 16 mm, meter length
ATTI • Code 039589 • CF CPOMT10016
T10-16mm polyurethane timing belt, pitch 10, width 16 mm, meter length
List price 23,74 € /m.
Online 13,06 € /m.
In Stock
(Ship. 1-2 days)
Metric toothed belt T10-32mm in polyurethane, pitch 10, width 32 mm, developed by the meter
ATTI • Code 039590 • CF CPOMT10032
Metric toothed belt T10-32mm in polyurethane, pitch 10, width 32 mm, developed by the meter
List price 47,48 € /m.
Online 26,11 € /m.
In Stock
(Ship. 1-2 days)
AT timing belt in polyurethane, pitch 5, width 16 mm, length in meters
ATTI • Code 039599 • CF CPOMAT05016
AT timing belt in polyurethane, pitch 5, width 16 mm, length in meters
List price 20,51 € /m.
Online 11,28 € /m.
In Stock
(Ship. 1-2 days)
AT 5-32mm polyurethane timing belt, pitch 5, width 32 mm, developed by the meter
ATTI • Code 039601 • CF CPOMAT05032
AT 5-32mm polyurethane timing belt, pitch 5, width 32 mm, developed by the meter
List price 41,08 € /m.
Online 22,60 € /m.
In Stock
(Ship. 1-2 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 €