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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 Timing Belt - 500-25, pitch 5, width 25 mm, length 500 mm, 100 teeth, closed loop
ATTI • Code 040090 • CF CPOAT05050025
AT5 Timing Belt - 500-25, pitch 5, width 25 mm, length 500 mm, 100 teeth, closed loop
List price 61,28 € /pc.
Online 33,70 € /pc.
On Order
(Ship. 6-7 days)
AT5 synchronous belt - 545-10, pitch 5, width 10 mm, length 545 mm, 109 teeth, closed loop
ATTI • Code 040091 • CF CPOAT05054510
AT5 synchronous belt - 545-10, pitch 5, width 10 mm, length 545 mm, 109 teeth, closed loop
List price 26,06 € /pc.
Online 14,34 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 545-16, pitch 5, width 16 mm, length 545 mm, 109 teeth, closed loop
ATTI • Code 040092 • CF CPOAT05054516
AT5 toothed belt - 545-16, pitch 5, width 16 mm, length 545 mm, 109 teeth, closed loop
List price 41,69 € /pc.
Online 22,93 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 545-25, pitch 5, width 25 mm, length 545 mm, 109 teeth, closed loop
ATTI • Code 040093 • CF CPOAT05054525
AT5 toothed belt - 545-25, pitch 5, width 25 mm, length 545 mm, 109 teeth, closed loop
List price 65,15 € /pc.
Online 35,83 € /pc.
On Order
(Ship. 6-7 days)
AT5 timing belt - 600-10, pitch 5, width 10 mm, length 600 mm, 120 teeth, closed loop
ATTI • Code 040094 • CF CPOAT05060010
AT5 timing belt - 600-10, pitch 5, width 10 mm, length 600 mm, 120 teeth, closed loop
List price 28,52 € /pc.
Online 15,69 € /pc.
On Order
(Ship. 6-7 days)
AT5 timing belt - 600-16, pitch 5, width 16 mm, length 600 mm, 120 teeth, closed loop
ATTI • Code 040095 • CF CPOAT05060016
AT5 timing belt - 600-16, pitch 5, width 16 mm, length 600 mm, 120 teeth, closed loop
List price 45,64 € /pc.
Online 25,10 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 600-25, pitch 5, width 25 mm, length 600 mm, 120 teeth, closed loop
ATTI • Code 040096 • CF CPOAT05060025
AT5 toothed belt - 600-25, pitch 5, width 25 mm, length 600 mm, 120 teeth, closed loop
List price 71,33 € /pc.
Online 39,23 € /pc.
On Order
(Ship. 6-7 days)
AT5 timing belt - 610-10, pitch 5, width 10 mm, length 610 mm, 122 teeth, endless loop
ATTI • Code 040097 • CF CPOAT05061010
AT5 timing belt - 610-10, pitch 5, width 10 mm, length 610 mm, 122 teeth, endless loop
List price 29,36 € /pc.
Online 16,15 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 610-16, pitch 5, width 16 mm, length 610 mm, 122 teeth, closed loop
ATTI • Code 040098 • CF CPOAT05061016
AT5 toothed belt - 610-16, pitch 5, width 16 mm, length 610 mm, 122 teeth, closed loop
List price 46,97 € /pc.
Online 25,83 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 610-25, pitch 5, width 25 mm, length 610 mm, 122 teeth, closed loop
ATTI • Code 040099 • CF CPOAT05061025
AT5 toothed belt - 610-25, pitch 5, width 25 mm, length 610 mm, 122 teeth, closed loop
List price 73,40 € /pc.
Online 40,37 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 660-10, pitch 5, width 10 mm, length 660 mm, 132 teeth, closed-loop
ATTI • Code 040103 • CF CPOAT05066010
AT5 toothed belt - 660-10, pitch 5, width 10 mm, length 660 mm, 132 teeth, closed-loop
List price 30,72 € /pc.
Online 16,90 € /pc.
On Order
(Ship. 6-7 days)
AT5 timing belt - 660-16, pitch 5, width 16 mm, length 660 mm, 132 teeth, closed loop
ATTI • Code 040104 • CF CPOAT05066016
AT5 timing belt - 660-16, pitch 5, width 16 mm, length 660 mm, 132 teeth, closed loop
List price 49,17 € /pc.
Online 27,04 € /pc.
On Order
(Ship. 6-7 days)
AT5 timing belt - 660-25, pitch 5, width 25 mm, length 660 mm, 132 teeth, closed loop
ATTI • Code 040105 • CF CPOAT05066025
AT5 timing belt - 660-25, pitch 5, width 25 mm, length 660 mm, 132 teeth, closed loop
List price 76,82 € /pc.
Online 42,25 € /pc.
On Order
(Ship. 6-7 days)
AT5 timing belt - 720-25, pitch 5, width 25 mm, length 720 mm, 144 teeth, closed loop
ATTI • Code 040108 • CF CPOAT05072025
AT5 timing belt - 720-25, pitch 5, width 25 mm, length 720 mm, 144 teeth, closed loop
List price 80,71 € /pc.
Online 44,39 € /pc.
On Order
(Ship. 6-7 days)
AT5 Timing Belt - 750-16, pitch 5, width 16 mm, length 750 mm, 150 teeth, closed loop
ATTI • Code 040110 • CF CPOAT05075016
AT5 Timing Belt - 750-16, pitch 5, width 16 mm, length 750 mm, 150 teeth, closed loop
List price 52,68 € /pc.
Online 28,97 € /pc.
On Order
(Ship. 6-7 days)
AT5 timing belt - 750-25, pitch 5, width 25 mm, length 750 mm, 150 teeth, closed loop
ATTI • Code 040111 • CF CPOAT05075025
AT5 timing belt - 750-25, pitch 5, width 25 mm, length 750 mm, 150 teeth, closed loop
List price 82,31 € /pc.
Online 45,27 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 780-10, pitch 5, width 10 mm, length 780 mm, 156 teeth, closed loop
ATTI • Code 040112 • CF CPOAT05078010
AT5 toothed belt - 780-10, pitch 5, width 10 mm, length 780 mm, 156 teeth, closed loop
List price 33,19 € /pc.
Online 18,25 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 780-16, pitch 5, width 16 mm, length 780 mm, 156 teeth, closed loop
ATTI • Code 040113 • CF CPOAT05078016
AT5 toothed belt - 780-16, pitch 5, width 16 mm, length 780 mm, 156 teeth, closed loop
List price 53,12 € /pc.
Online 29,21 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 780-25, pitch 5, width 25 mm, length 780 mm, 156 teeth, closed loop
ATTI • Code 040114 • CF CPOAT05078025
AT5 toothed belt - 780-25, pitch 5, width 25 mm, length 780 mm, 156 teeth, closed loop
List price 83,00 € /pc.
Online 45,65 € /pc.
On Order
(Ship. 6-7 days)
AT5 toothed belt - 825-10, pitch 5, width 10 mm, length 825 mm, 165 teeth, closed loop
ATTI • Code 040115 • CF CPOAT05082510
AT5 toothed belt - 825-10, pitch 5, width 10 mm, length 825 mm, 165 teeth, closed loop
List price 33,75 € /pc.
Online 18,56 € /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 €