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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 toothed belt 267-3M-06, pitch 3M, width 6 mm, length 267 mm, 89 teeth, closed loop
ATTI • Code 062206 • CF HTD02670306
HTD toothed belt 267-3M-06, pitch 3M, width 6 mm, length 267 mm, 89 teeth, closed loop
List price 4,42 € /pc.
Online 2,43 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 267-3M-09, pitch 3M, width 9 mm, length 267 mm, 89 teeth, closed loop
ATTI • Code 062207 • CF HTD02670309
HTD timing belt 267-3M-09, pitch 3M, width 9 mm, length 267 mm, 89 teeth, closed loop
List price 6,63 € /pc.
Online 3,65 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 267-3M-12, pitch 3M, width 12 mm, length 267 mm, 89 teeth, closed loop
ATTI • Code 062208 • CF HTD02670312
HTD timing belt 267-3M-12, pitch 3M, width 12 mm, length 267 mm, 89 teeth, closed loop
List price 8,85 € /pc.
Online 4,87 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 267-3M-15, pitch 3M, width 15 mm, length 267 mm, 89 teeth, closed loop
ATTI • Code 062209 • CF HTD02670315
HTD timing belt 267-3M-15, pitch 3M, width 15 mm, length 267 mm, 89 teeth, closed loop
List price 11,05 € /pc.
Online 6,08 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 270-3M-03, pitch 3M, width 3 mm, length 270 mm, 90 teeth, closed loop
ATTI • Code 062210 • CF HTD02700303
HTD timing belt 270-3M-03, pitch 3M, width 3 mm, length 270 mm, 90 teeth, closed loop
List price 2,23 € /pc.
Online 1,23 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 270-3M-06, pitch 3M, width 6 mm, length 270 mm, 90 teeth, closed loop
ATTI • Code 062211 • CF HTD02700306
HTD toothed belt 270-3M-06, pitch 3M, width 6 mm, length 270 mm, 90 teeth, closed loop
List price 4,47 € /pc.
Online 2,46 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 270-3M-09, pitch 3M, width 9 mm, length 270 mm, 90 teeth, closed loop
ATTI • Code 062212 • CF HTD02700309
HTD timing belt 270-3M-09, pitch 3M, width 9 mm, length 270 mm, 90 teeth, closed loop
List price 6,69 € /pc.
Online 3,68 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 270-3M-15, pitch 3M, width 15 mm, length 270 mm, 90 teeth, closed loop
ATTI • Code 062213 • CF HTD02700315
HTD toothed belt 270-3M-15, pitch 3M, width 15 mm, length 270 mm, 90 teeth, closed loop
List price 11,17 € /pc.
Online 6,14 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 276-3M-06, pitch 3M, width 6 mm, length 276 mm, 92 teeth, closed loop
ATTI • Code 062214 • CF HTD02760306
HTD timing belt 276-3M-06, pitch 3M, width 6 mm, length 276 mm, 92 teeth, closed loop
List price 4,55 € /pc.
Online 2,50 € /pc.
On Order
(Ship. 6-7 days)
HTD 276-3M-09 timing belt, pitch 3M, width 9 mm, length 276 mm, 92 teeth, closed loop
ATTI • Code 062215 • CF HTD02760309
HTD 276-3M-09 timing belt, pitch 3M, width 9 mm, length 276 mm, 92 teeth, closed loop
List price 6,83 € /pc.
Online 3,76 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 276-3M-12, pitch 3M, width 12 mm, length 276 mm, 92 teeth, closed loop
ATTI • Code 062216 • CF HTD02760312
HTD timing belt 276-3M-12, pitch 3M, width 12 mm, length 276 mm, 92 teeth, closed loop
List price 9,11 € /pc.
Online 5,01 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 276-3M-15, pitch 3M, width 15 mm, length 276 mm, 92 teeth, closed loop
ATTI • Code 062217 • CF HTD02760315
HTD timing belt 276-3M-15, pitch 3M, width 15 mm, length 276 mm, 92 teeth, closed loop
List price 11,39 € /pc.
Online 6,27 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 282-3M-06, pitch 3M, width 6 mm, length 282 mm, 94 teeth, closed loop
ATTI • Code 062218 • CF HTD02820306
HTD timing belt 282-3M-06, pitch 3M, width 6 mm, length 282 mm, 94 teeth, closed loop
List price 4,69 € /pc.
Online 2,58 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 282-3M-09, pitch 3M, width 9 mm, length 282 mm, 94 teeth, closed loop
ATTI • Code 062219 • CF HTD02820309
HTD timing belt 282-3M-09, pitch 3M, width 9 mm, length 282 mm, 94 teeth, closed loop
List price 7,03 € /pc.
Online 3,87 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 282-3M-12, pitch 3M, width 12 mm, length 282 mm, 94 teeth, closed loop
ATTI • Code 062220 • CF HTD02820312
HTD timing belt 282-3M-12, pitch 3M, width 12 mm, length 282 mm, 94 teeth, closed loop
List price 9,37 € /pc.
Online 5,15 € /pc.
On Order
(Ship. 6-7 days)
HTD 282-3M-15 timing belt, pitch 3M, width 15 mm, length 282 mm, 94 teeth, closed loop
ATTI • Code 062221 • CF HTD02820315
HTD 282-3M-15 timing belt, pitch 3M, width 15 mm, length 282 mm, 94 teeth, closed loop
List price 11,72 € /pc.
Online 6,45 € /pc.
On Order
(Ship. 6-7 days)
HTD 285-3M-03 toothed belt, pitch 3M, width 3 mm, length 285 mm, 95 teeth, closed loop
ATTI • Code 062222 • CF HTD02850303
HTD 285-3M-03 toothed belt, pitch 3M, width 3 mm, length 285 mm, 95 teeth, closed loop
List price 2,37 € /pc.
Online 1,30 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 285-3M-06, pitch 3M, width 6 mm, length 285 mm, 95 teeth, closed loop
ATTI • Code 062223 • CF HTD02850306
HTD timing belt 285-3M-06, pitch 3M, width 6 mm, length 285 mm, 95 teeth, closed loop
List price 4,74 € /pc.
Online 2,60 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 285-3M-12, pitch 3M, width 12 mm, length 285 mm, 95 teeth, closed loop
ATTI • Code 062224 • CF HTD02850312
HTD toothed belt 285-3M-12, pitch 3M, width 12 mm, length 285 mm, 95 teeth, closed loop
List price 9,45 € /pc.
Online 5,20 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 288-3M-03, pitch 3M, width 3 mm, length 288 mm, 96 teeth, closed loop
ATTI • Code 062225 • CF HTD02880303
HTD belt 288-3M-03, pitch 3M, width 3 mm, length 288 mm, 96 teeth, closed loop
List price 2,38 € /pc.
Online 1,31 € /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 €