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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 1520-8M-20, pitch 8M, width 20 mm, length 1520 mm, 190 teeth, closed loop
ATTI • Code 055308 • CF HTD15200820
HTD timing belt 1520-8M-20, pitch 8M, width 20 mm, length 1520 mm, 190 teeth, closed loop
List price 58,77 € /pc.
Online 32,32 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1552-8M-20, pitch 8M, width 20 mm, length 1552 mm, 194 teeth, closed-loop
ATTI • Code 055309 • CF HTD15520820
HTD toothed belt 1552-8M-20, pitch 8M, width 20 mm, length 1552 mm, 194 teeth, closed-loop
List price 59,83 € /pc.
Online 32,91 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1696-8M-20, pitch 8M, width 20 mm, length 1696 mm, 212 teeth, closed loop
ATTI • Code 055310 • CF HTD16960820
HTD timing belt 1696-8M-20, pitch 8M, width 20 mm, length 1696 mm, 212 teeth, closed loop
List price 65,49 € /pc.
Online 36,02 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1904-8M-20, pitch 8M, width 20 mm, length 1904 mm, 238 teeth, closed-loop
ATTI • Code 055312 • CF HTD19040820
HTD timing belt 1904-8M-20, pitch 8M, width 20 mm, length 1904 mm, 238 teeth, closed-loop
List price 73,58 € /pc.
Online 40,47 € /pc.
On Order
(Ship. 6-7 days)
HTD 2080-8M-20 toothed belt, pitch 8M, width 20 mm, length 2080 mm, 260 teeth, closed loop
ATTI • Code 055313 • CF HTD20800820
HTD 2080-8M-20 toothed belt, pitch 8M, width 20 mm, length 2080 mm, 260 teeth, closed loop
List price 81,00 € /pc.
Online 44,55 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2200-8M-20, pitch 8M, width 20 mm, length 2200 mm, 275 teeth, closed loop
ATTI • Code 055314 • CF HTD22000820
HTD toothed belt 2200-8M-20, pitch 8M, width 20 mm, length 2200 mm, 275 teeth, closed loop
List price 85,77 € /pc.
Online 47,17 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2240-8M-20, pitch 8M, width 20 mm, length 2240 mm, 280 teeth, closed loop
ATTI • Code 055315 • CF HTD22400820
HTD timing belt 2240-8M-20, pitch 8M, width 20 mm, length 2240 mm, 280 teeth, closed loop
List price 87,31 € /pc.
Online 48,02 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 656-8M-30, pitch 8M, width 30 mm, length 656 mm, 82 teeth, closed loop
ATTI • Code 055318 • CF HTD06560830
HTD timing belt 656-8M-30, pitch 8M, width 30 mm, length 656 mm, 82 teeth, closed loop
List price 39,23 € /pc.
Online 21,58 € /pc.
On Order
(Ship. 6-7 days)
HTD synchronous belt 776-8M-30, 8M pitch, 30 mm width, 776 mm length, 97 teeth, closed loop
ATTI • Code 055319 • CF HTD07760830
HTD synchronous belt 776-8M-30, 8M pitch, 30 mm width, 776 mm length, 97 teeth, closed loop
List price 46,34 € /pc.
Online 25,48 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1000-8M-30, pitch 8M, width 30 mm, length 1000 mm, 125 teeth, closed loop
ATTI • Code 055320 • CF HTD10000830
HTD timing belt 1000-8M-30, pitch 8M, width 30 mm, length 1000 mm, 125 teeth, closed loop
List price 59,82 € /pc.
Online 32,90 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1080-8M-30, pitch 8M, width 30 mm, length 1080 mm, 135 teeth, closed loop
ATTI • Code 055321 • CF HTD10800830
HTD timing belt 1080-8M-30, pitch 8M, width 30 mm, length 1080 mm, 135 teeth, closed loop
List price 64,79 € /pc.
Online 35,63 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1160-8M-30, pitch 8M, width 30 mm, length 1160 mm, 145 teeth, closed loop
ATTI • Code 055322 • CF HTD11600830
HTD belt 1160-8M-30, pitch 8M, width 30 mm, length 1160 mm, 145 teeth, closed loop
List price 69,29 € /pc.
Online 38,11 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 580-5M-25, pitch 5M, width 25 mm, length 580 mm, 116 teeth, closed loop
ATTI • Code 055326 • CF HTD05800525
HTD toothed belt 580-5M-25, pitch 5M, width 25 mm, length 580 mm, 116 teeth, closed loop
List price 36,25 € /pc.
Online 19,94 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1256-8M-30, pitch 8M, width 30 mm, length 1256 mm, 157 teeth, closed loop
ATTI • Code 055333 • CF HTD12560830
HTD timing belt 1256-8M-30, pitch 8M, width 30 mm, length 1256 mm, 157 teeth, closed loop
List price 75,02 € /pc.
Online 41,26 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1304-8M-30, pitch 8M, width 30 mm, length 1304 mm, 163 teeth, closed loop
ATTI • Code 055334 • CF HTD13040830
HTD timing belt 1304-8M-30, pitch 8M, width 30 mm, length 1304 mm, 163 teeth, closed loop
List price 78,06 € /pc.
Online 42,93 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1360-8M-30, pitch 8M, width 30 mm, length 1360 mm, 170 teeth, closed loop
ATTI • Code 055335 • CF HTD13600830
HTD timing belt 1360-8M-30, pitch 8M, width 30 mm, length 1360 mm, 170 teeth, closed loop
List price 81,41 € /pc.
Online 44,78 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1424-8M-30, pitch 8M, width 30 mm, development 1424 mm, 178 teeth, closed loop
ATTI • Code 055336 • CF HTD14240830
HTD timing belt 1424-8M-30, pitch 8M, width 30 mm, development 1424 mm, 178 teeth, closed loop
List price 84,84 € /pc.
Online 46,66 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1520-8M-30, pitch 8M, width 30 mm, length 1520 mm, 190 teeth, closed loop
ATTI • Code 055337 • CF HTD15200830
HTD timing belt 1520-8M-30, pitch 8M, width 30 mm, length 1520 mm, 190 teeth, closed loop
List price 88,15 € /pc.
Online 48,48 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1552-8M-30, pitch 8M, width 30 mm, length 1552 mm, 194 teeth, closed loop
ATTI • Code 055338 • CF HTD15520830
HTD timing belt 1552-8M-30, pitch 8M, width 30 mm, length 1552 mm, 194 teeth, closed loop
List price 89,76 € /pc.
Online 49,37 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1696-8M-30, pitch 8M, width 30 mm, length 1696 mm, 212 teeth, closed loop
ATTI • Code 055339 • CF HTD16960830
HTD belt 1696-8M-30, pitch 8M, width 30 mm, length 1696 mm, 212 teeth, closed loop
List price 98,23 € /pc.
Online 54,03 € /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 €