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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 204-3M-12, pitch 3M, width 12 mm, length 204 mm, 68 teeth, closed loop
ATTI • Code 062166 • CF HTD02040312
HTD timing belt 204-3M-12, pitch 3M, width 12 mm, length 204 mm, 68 teeth, closed loop
List price 6,74 € /pc.
Online 3,70 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 204-3M-15, pitch 3M, width 15 mm, length 204 mm, 68 teeth, endless loop
ATTI • Code 062167 • CF HTD02040315
HTD timing belt 204-3M-15, pitch 3M, width 15 mm, length 204 mm, 68 teeth, endless loop
List price 8,43 € /pc.
Online 4,64 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 207-3M-06, pitch 3M, width 6 mm, length 207 mm, 69 teeth, closed loop
ATTI • Code 062168 • CF HTD02070306
HTD timing belt 207-3M-06, pitch 3M, width 6 mm, length 207 mm, 69 teeth, closed loop
List price 3,42 € /pc.
Online 1,88 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 207-3M-09, pitch 3M, width 9 mm, length 207 mm, 69 teeth, closed loop
ATTI • Code 062169 • CF HTD02070309
HTD timing belt 207-3M-09, pitch 3M, width 9 mm, length 207 mm, 69 teeth, closed loop
List price 5,12 € /pc.
Online 2,82 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 207-3M-12, pitch 3M, width 12 mm, length 207 mm, 69 teeth, closed loop
ATTI • Code 062170 • CF HTD02070312
HTD timing belt 207-3M-12, pitch 3M, width 12 mm, length 207 mm, 69 teeth, closed loop
List price 6,83 € /pc.
Online 3,76 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 207-3M-15, pitch 3M, width 15 mm, length 207 mm, 69 teeth, closed loop
ATTI • Code 062171 • CF HTD02070315
HTD timing belt 207-3M-15, pitch 3M, width 15 mm, length 207 mm, 69 teeth, closed loop
List price 8,54 € /pc.
Online 4,69 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 210-3M-06, pitch 3M, width 6 mm, length 210 mm, 70 teeth, closed loop
ATTI • Code 062172 • CF HTD02100306
HTD toothed belt 210-3M-06, pitch 3M, width 6 mm, length 210 mm, 70 teeth, closed loop
List price 3,47 € /pc.
Online 1,91 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 210-3M-12, pitch 3M, width 12 mm, length 210 mm, 70 teeth,closed loop
ATTI • Code 062173 • CF HTD02100312
HTD timing belt 210-3M-12, pitch 3M, width 12 mm, length 210 mm, 70 teeth,closed loop
List price 6,92 € /pc.
Online 3,81 € /pc.
On Order
(Ship. 6-7 days)
HTD 213-3M-06 timing belt, pitch 3M, width 6 mm, length 213 mm, 71 teeth, closed loop
ATTI • Code 062174 • CF HTD02130306
HTD 213-3M-06 timing belt, pitch 3M, width 6 mm, length 213 mm, 71 teeth, closed loop
List price 3,54 € /pc.
Online 1,95 € /pc.
On Order
(Ship. 6-7 days)
HTD 213-3M-09 timing belt, pitch 3M, width 9 mm, length 213 mm, 71 teeth, closed loop
ATTI • Code 062175 • CF HTD02130309
HTD 213-3M-09 timing belt, pitch 3M, width 9 mm, length 213 mm, 71 teeth, closed loop
List price 5,32 € /pc.
Online 2,93 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 213-3M-12, pitch 3M, width 12 mm, length 213 mm, 71 teeth, closed loop
ATTI • Code 062176 • CF HTD02130312
HTD timing belt 213-3M-12, pitch 3M, width 12 mm, length 213 mm, 71 teeth, closed loop
List price 7,10 € /pc.
Online 3,91 € /pc.
On Order
(Ship. 6-7 days)
HTD 213-3M-15 toothed belt, pitch 3M, width 15 mm, length 213 mm, 71 teeth, closed loop
ATTI • Code 062177 • CF HTD02130315
HTD 213-3M-15 toothed belt, pitch 3M, width 15 mm, length 213 mm, 71 teeth, closed loop
List price 8,87 € /pc.
Online 4,88 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 225-3M-03, pitch 3M, width 3 mm, length 225 mm, 75 teeth, closed loop
ATTI • Code 062178 • CF HTD02250303
HTD toothed belt 225-3M-03, pitch 3M, width 3 mm, length 225 mm, 75 teeth, closed loop
List price 1,86 € /pc.
Online 1,03 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 225-3M-06, pitch 3M, width 6 mm, length 225 mm, 75 teeth, closed loop
ATTI • Code 062179 • CF HTD02250306
HTD timing belt 225-3M-06, pitch 3M, width 6 mm, length 225 mm, 75 teeth, closed loop
List price 3,72 € /pc.
Online 2,05 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 225-3M-12, pitch 3M, width 12 mm, length 225 mm, 75 teeth, closed loop
ATTI • Code 062180 • CF HTD02250312
HTD belt 225-3M-12, pitch 3M, width 12 mm, length 225 mm, 75 teeth, closed loop
List price 7,44 € /pc.
Online 4,09 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 237-3M-03, pitch 3M, width 3 mm, length 237 mm, 79 teeth, closed loop
ATTI • Code 062181 • CF HTD02370303
HTD toothed belt 237-3M-03, pitch 3M, width 3 mm, length 237 mm, 79 teeth, closed loop
List price 1,97 € /pc.
Online 1,08 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 237-3M-06, pitch 3M, width 6 mm, length 237 mm, 79 teeth, closed loop
ATTI • Code 062182 • CF HTD02370306
HTD toothed belt 237-3M-06, pitch 3M, width 6 mm, length 237 mm, 79 teeth, closed loop
List price 3,93 € /pc.
Online 2,16 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 237-3M-09, pitch 3M, width 9 mm, length 237 mm, 79 teeth, closed loop
ATTI • Code 062183 • CF HTD02370309
HTD timing belt 237-3M-09, pitch 3M, width 9 mm, length 237 mm, 79 teeth, closed loop
List price 5,91 € /pc.
Online 3,25 € /pc.
On Order
(Ship. 6-7 days)
HTD 237-3M-15 timing belt, pitch 3M, width 15 mm, length 237 mm, 79 teeth, closed loop
ATTI • Code 062184 • CF HTD02370315
HTD 237-3M-15 timing belt, pitch 3M, width 15 mm, length 237 mm, 79 teeth, closed loop
List price 9,85 € /pc.
Online 5,42 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 240-3M-03, pitch 3M, width 3 mm, length 240 mm, 80 teeth, endless loop
ATTI • Code 062185 • CF HTD02400303
HTD timing belt 240-3M-03, pitch 3M, width 3 mm, length 240 mm, 80 teeth, endless loop
List price 1,99 € /pc.
Online 1,10 € /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 €