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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 890-5M-09, pitch 5M, width 9 mm, length 890 mm, 178 teeth, closed loop
ATTI • Code 055245 • CF HTD08900509
HTD timing belt 890-5M-09, pitch 5M, width 9 mm, length 890 mm, 178 teeth, closed loop
List price 18,98 € /pc.
Online 10,44 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 925-5M-09, pitch 5M, width 9 mm, length 925 mm, 185 teeth, closed loop
ATTI • Code 055246 • CF HTD09250509
HTD toothed belt 925-5M-09, pitch 5M, width 9 mm, length 925 mm, 185 teeth, closed loop
List price 19,63 € /pc.
Online 10,80 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1420-5M-09, pitch 5M, width 9 mm, length 1420 mm, 284 teeth, closed loop
ATTI • Code 055247 • CF HTD14200509
HTD timing belt 1420-5M-09, pitch 5M, width 9 mm, length 1420 mm, 284 teeth, closed loop
List price 29,99 € /pc.
Online 16,49 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1595-5M-09, pitch 5M, width 9 mm, length 1595 mm, 319 teeth, closed loop
ATTI • Code 055248
HTD timing belt 1595-5M-09, pitch 5M, width 9 mm, length 1595 mm, 319 teeth, closed loop
List price 29,29 € /pc.
Online 16,11 € /pc.
On Order
(Ship. 20-21 days)
HTD toothed belt 1790-5M-09, pitch 5M, width 9 mm, length 1790 mm, 358 teeth, closed loop
ATTI • Code 055249 • CF HTD17900509
HTD toothed belt 1790-5M-09, pitch 5M, width 9 mm, length 1790 mm, 358 teeth, closed loop
List price 37,78 € /pc.
Online 20,78 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 225-5M-15, pitch 5M, width 15 mm, length 225 mm, 45 teeth, closed loop
ATTI • Code 055252 • CF HTD02250515
HTD toothed belt 225-5M-15, pitch 5M, width 15 mm, length 225 mm, 45 teeth, closed loop
List price 8,62 € /pc.
Online 4,74 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 360-5M-15, pitch 5M, width 15 mm, length 360 mm, 72 teeth, closed loop
ATTI • Code 055253 • CF HTD03600515
HTD timing belt 360-5M-15, pitch 5M, width 15 mm, length 360 mm, 72 teeth, closed loop
List price 13,68 € /pc.
Online 7,53 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 535-5M-15, pitch 5M, width 15 mm, length 535 mm, 107 teeth, closed loop
ATTI • Code 055256 • CF HTD05350515
HTD timing belt 535-5M-15, pitch 5M, width 15 mm, length 535 mm, 107 teeth, closed loop
List price 19,91 € /pc.
Online 10,95 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 565-5M-15, pitch 5M, width 15 mm, length 565 mm, 113 teeth, closed loop
ATTI • Code 055258 • CF HTD05650515
HTD timing belt 565-5M-15, pitch 5M, width 15 mm, length 565 mm, 113 teeth, closed loop
List price 21,16 € /pc.
Online 11,64 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 580-5M-15, pitch 5M, width 15 mm, length 580 mm, 116 teeth, closed loop
ATTI • Code 055260 • CF HTD05800515
HTD toothed belt 580-5M-15, pitch 5M, width 15 mm, length 580 mm, 116 teeth, closed loop
List price 21,76 € /pc.
Online 11,97 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 610-5M-15, pitch 5M, width 15 mm, length 610 mm, 122 teeth, endless loop
ATTI • Code 055262 • CF HTD06100515
HTD belt 610-5M-15, pitch 5M, width 15 mm, length 610 mm, 122 teeth, endless loop
List price 22,81 € /pc.
Online 12,54 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 710-5M-15, pitch 5M, width 15 mm, length 710 mm, 142 teeth, closed loop
ATTI • Code 055263 • CF HTD07100515
HTD toothed belt 710-5M-15, pitch 5M, width 15 mm, length 710 mm, 142 teeth, closed loop
List price 26,60 € /pc.
Online 14,63 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 740-5M-15, pitch 5M, width 15 mm, length 740 mm, 148 teeth, closed loop
ATTI • Code 055265 • CF HTD07400515
HTD timing belt 740-5M-15, pitch 5M, width 15 mm, length 740 mm, 148 teeth, closed loop
List price 27,79 € /pc.
Online 15,28 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 890-5M-15, pitch 5M, width 15 mm, length 890 mm, 178 teeth, closed loop
ATTI • Code 055266 • CF HTD08900515
HTD timing belt 890-5M-15, pitch 5M, width 15 mm, length 890 mm, 178 teeth, closed loop
List price 31,63 € /pc.
Online 17,40 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 925-5M-15, pitch 5M, width 15 mm, length 925 mm, 185 teeth, closed loop
ATTI • Code 055267 • CF HTD09250515
HTD timing belt 925-5M-15, pitch 5M, width 15 mm, length 925 mm, 185 teeth, closed loop
List price 32,72 € /pc.
Online 18,00 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1035-5M-15, pitch 5M, width 15 mm, length 1035 mm, 207 teeth, closed loop
ATTI • Code 055268 • CF HTD10350515
HTD timing belt 1035-5M-15, pitch 5M, width 15 mm, length 1035 mm, 207 teeth, closed loop
List price 36,39 € /pc.
Online 20,01 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1125-5M-15, pitch 5M, width 15 mm, length 1125 mm, 225 teeth, closed loop
ATTI • Code 055269 • CF HTD11250515
HTD timing belt 1125-5M-15, pitch 5M, width 15 mm, length 1125 mm, 225 teeth, closed loop
List price 39,53 € /pc.
Online 21,74 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1420-5M-15, pitch 5M, width 15 mm, length 1420 mm, 284 teeth, closed loop
ATTI • Code 055271 • CF HTD14200515
HTD toothed belt 1420-5M-15, pitch 5M, width 15 mm, length 1420 mm, 284 teeth, closed loop
List price 49,98 € /pc.
Online 27,49 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1595-5M-15, pitch 5M, width 15 mm, length 1595 mm, 319 teeth, closed loop
ATTI • Code 055272 • CF HTD15950515
HTD toothed belt 1595-5M-15, pitch 5M, width 15 mm, length 1595 mm, 319 teeth, closed loop
List price 56,14 € /pc.
Online 30,88 € /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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