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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 belt 1256-8M-85, pitch 8M, width 85 mm, length 1256 mm, 157 teeth, closed loop
ATTI • Code 062486 • CF HTD12560885
HTD belt 1256-8M-85, pitch 8M, width 85 mm, length 1256 mm, 157 teeth, closed loop
List price 212,58 € /pc.
Online 116,92 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1260-14M-40, pitch 14M, width 40 mm, length 1260 mm, 90 teeth, closed loop
ATTI • Code 062487 • CF HTD12601440
HTD timing belt 1260-14M-40, pitch 14M, width 40 mm, length 1260 mm, 90 teeth, closed loop
List price 143,74 € /pc.
Online 79,06 € /pc.
On Order
(Ship. 6-7 days)
HTD Timing Belt 1260-14M-55, pitch 14M, width 55 mm, length 1260 mm, 90 teeth, closed loop
ATTI • Code 062488 • CF HTD126014055
HTD Timing Belt 1260-14M-55, pitch 14M, width 55 mm, length 1260 mm, 90 teeth, closed loop
List price 197,64 € /pc.
Online 108,70 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1263-3M-06, pitch 3M, width 6 mm, length 1263 mm, 421 teeth, closed loop
ATTI • Code 062489 • CF HTD12630306
HTD timing belt 1263-3M-06, pitch 3M, width 6 mm, length 1263 mm, 421 teeth, closed loop
List price 19,59 € /pc.
Online 10,78 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1263-3M-09, pitch 3M, width 9 mm, length 1263 mm, 421 teeth, closed loop
ATTI • Code 062490 • CF HTD12630309
HTD timing belt 1263-3M-09, pitch 3M, width 9 mm, length 1263 mm, 421 teeth, closed loop
List price 29,37 € /pc.
Online 16,15 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1263-3M-15, pitch 3M, width 15 mm, length 1263 mm, 421 teeth, closed loop
ATTI • Code 062491 • CF HTD12630315
HTD timing belt 1263-3M-15, pitch 3M, width 15 mm, length 1263 mm, 421 teeth, closed loop
List price 48,96 € /pc.
Online 26,93 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1272-8M-50, pitch 8M, width 50 mm, length 1272 mm, 159 teeth, closed loop
ATTI • Code 062492 • CF HTD12720850
HTD toothed belt 1272-8M-50, pitch 8M, width 50 mm, length 1272 mm, 159 teeth, closed loop
List price 126,73 € /pc.
Online 69,70 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1320-8M-20, pitch 8M, width 20 mm, length 1320 mm, 165 teeth, joined in a loop
ATTI • Code 062493 • CF HTD13200820
HTD belt 1320-8M-20, pitch 8M, width 20 mm, length 1320 mm, 165 teeth, joined in a loop
List price 52,64 € /pc.
Online 28,95 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1320-8M-50, pitch 8M, width 50 mm, length 1320 mm, 165 teeth, closed loop
ATTI • Code 062494 • CF HTD13200850
HTD timing belt 1320-8M-50, pitch 8M, width 50 mm, length 1320 mm, 165 teeth, closed loop
List price 131,60 € /pc.
Online 72,38 € /pc.
On Order
(Ship. 6-7 days)
HTD 1328-8M-20 toothed belt, pitch 8M, width 20 mm, length 1328 mm, 166 teeth, closed loop
ATTI • Code 062495 • CF HTD13280820
HTD 1328-8M-20 toothed belt, pitch 8M, width 20 mm, length 1328 mm, 166 teeth, closed loop
List price 52,94 € /pc.
Online 29,12 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1328-8M-30, pitch 8M, width 30 mm, length 1328 mm, 166 teeth, closed loop
ATTI • Code 062496 • CF HTD13280830
HTD belt 1328-8M-30, pitch 8M, width 30 mm, length 1328 mm, 166 teeth, closed loop
List price 79,41 € /pc.
Online 43,67 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1328-8M-50, pitch 8M, width 50 mm, length 1328 mm, 166 teeth, closed loop
ATTI • Code 062497 • CF HTD13280850
HTD timing belt 1328-8M-50, pitch 8M, width 50 mm, length 1328 mm, 166 teeth, closed loop
List price 132,35 € /pc.
Online 72,79 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1344-8M-20, pitch 8M, width 20 mm, length 1344 mm, 168 teeth, closed loop
ATTI • Code 062498 • CF HTD13440820
HTD belt 1344-8M-20, pitch 8M, width 20 mm, length 1344 mm, 168 teeth, closed loop
List price 53,68 € /pc.
Online 29,53 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1344-8M-30, pitch 8M, width 30 mm, length 1344 mm, 168 teeth, closed loop
ATTI • Code 062499 • CF HTD13440830
HTD belt 1344-8M-30, pitch 8M, width 30 mm, length 1344 mm, 168 teeth, closed loop
List price 80,53 € /pc.
Online 44,29 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1344-8M-50, pitch 8M, width 50 mm, length 1344 mm, 168 teeth, closed loop
ATTI • Code 062500 • CF HTD13440850
HTD timing belt 1344-8M-50, pitch 8M, width 50 mm, length 1344 mm, 168 teeth, closed loop
List price 134,22 € /pc.
Online 73,82 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1358-14M-40, pitch 14M, width 40 mm, length 1358 mm, 97 teeth, closed loop
ATTI • Code 062501 • CF HTD13581440
HTD belt 1358-14M-40, pitch 14M, width 40 mm, length 1358 mm, 97 teeth, closed loop
List price 154,63 € /pc.
Online 85,05 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1392-8M-20, pitch 8M, width 20 mm, length 1392 mm, 174 teeth, endless loop
ATTI • Code 062502 • CF HTD13920820
HTD toothed belt 1392-8M-20, pitch 8M, width 20 mm, length 1392 mm, 174 teeth, endless loop
List price 55,65 € /pc.
Online 30,61 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1392-8M-30, pitch 8M, width 30 mm, length 1392 mm, 174 teeth, closed loop
ATTI • Code 062503 • CF HTD13920830
HTD timing belt 1392-8M-30, pitch 8M, width 30 mm, length 1392 mm, 174 teeth, closed loop
List price 83,46 € /pc.
Online 45,90 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1400-8M-20, pitch 8M, width 20 mm, length 1400 mm, 175 teeth, closed loop
ATTI • Code 062504 • CF HTD14000820
HTD belt 1400-8M-20, pitch 8M, width 20 mm, length 1400 mm, 175 teeth, closed loop
List price 55,94 € /pc.
Online 30,76 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1400-8M-30, pitch 8M, width 30 mm, length 1400 mm, 175 teeth, closed loop
ATTI • Code 062505 • CF HTD14000830
HTD timing belt 1400-8M-30, pitch 8M, width 30 mm, length 1400 mm, 175 teeth, closed loop
List price 83,90 € /pc.
Online 46,15 € /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 €