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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 1072-8M-50, pitch 8M, width 50 mm, length 1072 mm, 134 teeth, closed loop
ATTI • Code 062466 • CF HTD10720850
HTD belt 1072-8M-50, pitch 8M, width 50 mm, length 1072 mm, 134 teeth, closed loop
List price 107,23 € /pc.
Online 58,98 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1125-3M-03, pitch 3M, width 3 mm, length 1125 mm, 375 teeth, closed loop
ATTI • Code 062467 • CF HTD11250303
HTD toothed belt 1125-3M-03, pitch 3M, width 3 mm, length 1125 mm, 375 teeth, closed loop
List price 8,74 € /pc.
Online 4,80 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1125-3M-06, pitch 3M, width 6 mm, length 1125 mm, 375 teeth, closed loop
ATTI • Code 062468 • CF HTD11250306
HTD timing belt 1125-3M-06, pitch 3M, width 6 mm, length 1125 mm, 375 teeth, closed loop
List price 17,47 € /pc.
Online 9,61 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1125-3M-09, pitch 3M, width 9 mm, length 1125 mm, 375 teeth, closed loop
ATTI • Code 062469 • CF HTD11250309
HTD belt 1125-3M-09, pitch 3M, width 9 mm, length 1125 mm, 375 teeth, closed loop
List price 26,20 € /pc.
Online 14,41 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1152-8M-50, pitch 8M, width 50 mm, length 1152 mm, 144 teeth, closed loop
ATTI • Code 062470 • CF HTD11520850
HTD timing belt 1152-8M-50, pitch 8M, width 50 mm, length 1152 mm, 144 teeth, closed loop
List price 114,72 € /pc.
Online 63,10 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1184-8M-20, pitch 8M, width 20 mm, length 1184 mm, 148 teeth, closed loop
ATTI • Code 062471 • CF HTD11840820
HTD toothed belt 1184-8M-20, pitch 8M, width 20 mm, length 1184 mm, 148 teeth, closed loop
List price 47,26 € /pc.
Online 25,99 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1184-8M-30, pitch 8M, width 30 mm, length 1184 mm, 148 teeth, closed loop
ATTI • Code 062472 • CF HTD11840830
HTD toothed belt 1184-8M-30, pitch 8M, width 30 mm, length 1184 mm, 148 teeth, closed loop
List price 70,88 € /pc.
Online 38,99 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1192-8M-50, pitch 8M, width 50 mm, length 1192 mm, 149 teeth, closed loop
ATTI • Code 062473 • CF HTD11920850
HTD toothed belt 1192-8M-50, pitch 8M, width 50 mm, length 1192 mm, 149 teeth, closed loop
List price 118,94 € /pc.
Online 65,42 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1216-8M-20, pitch 8M, width 20 mm, length 1216 mm, 152 teeth, closed loop
ATTI • Code 062474 • CF HTD12160820
HTD timing belt 1216-8M-20, pitch 8M, width 20 mm, length 1216 mm, 152 teeth, closed loop
List price 48,60 € /pc.
Online 26,73 € /pc.
On Order
(Ship. 6-7 days)
HTD 1224-8M-50 timing belt, pitch 8M, width 50 mm, length 1224 mm, 153 teeth, closed loop
ATTI • Code 062475 • CF HTD12240850
HTD 1224-8M-50 timing belt, pitch 8M, width 50 mm, length 1224 mm, 153 teeth, closed loop
List price 122,19 € /pc.
Online 67,21 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1224-8M-85, pitch 8M, width 85 mm, length 1224 mm, 153 teeth, closed loop
ATTI • Code 062476 • CF HTD12240885
HTD belt 1224-8M-85, pitch 8M, width 85 mm, length 1224 mm, 153 teeth, closed loop
List price 207,72 € /pc.
Online 114,24 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1240-8M-30, pitch 8M, width 30 mm, length 1240 mm, 155 teeth, closed loop
ATTI • Code 062477 • CF HTD12400830
HTD timing belt 1240-8M-30, pitch 8M, width 30 mm, length 1240 mm, 155 teeth, closed loop
List price 74,23 € /pc.
Online 40,83 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1245-3M-03, pitch 3M, width 3 mm, length 2145 mm, 715 teeth, closed loop
ATTI • Code 062478 • CF HTD12450303
HTD belt 1245-3M-03, pitch 3M, width 3 mm, length 2145 mm, 715 teeth, closed loop
List price 9,66 € /pc.
Online 5,31 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1245-3M-06, pitch 3M, width 6 mm, length 2145 mm, 715 teeth, closed loop
ATTI • Code 062479 • CF HTD12450306
HTD timing belt 1245-3M-06, pitch 3M, width 6 mm, length 2145 mm, 715 teeth, closed loop
List price 19,30 € /pc.
Online 10,62 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1245-3M-09, pitch 3M, width 9 mm, length 2145 mm, 715 teeth, closed loop
ATTI • Code 062480 • CF HTD12450309
HTD belt 1245-3M-09, pitch 3M, width 9 mm, length 2145 mm, 715 teeth, closed loop
List price 28,97 € /pc.
Online 15,93 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1245-3M-15, pitch 3M, width 15 mm, length 2145 mm, 715 teeth, closed loop
ATTI • Code 062481 • CF HTD12450315
HTD toothed belt 1245-3M-15, pitch 3M, width 15 mm, length 2145 mm, 715 teeth, closed loop
List price 48,27 € /pc.
Online 26,55 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1246-14M-55, pitch 14M, width 55 mm, length 1246 mm, 89 teeth, closed loop
ATTI • Code 062482 • CF HTD12461455
HTD timing belt 1246-14M-55, pitch 14M, width 55 mm, length 1246 mm, 89 teeth, closed loop
List price 195,76 € /pc.
Online 107,67 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1248-8M-20, pitch 8M, width 20 mm, length 1248 mm, 156 teeth, closed loop
ATTI • Code 062483 • CF HTD12480820
HTD timing belt 1248-8M-20, pitch 8M, width 20 mm, length 1248 mm, 156 teeth, closed loop
List price 49,79 € /pc.
Online 27,39 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1248-8M-30, pitch 8M, width 30 mm, length 1248 mm, 156 teeth, closed loop
ATTI • Code 062484 • CF HTD12480830
HTD toothed belt 1248-8M-30, pitch 8M, width 30 mm, length 1248 mm, 156 teeth, closed loop
List price 74,69 € /pc.
Online 41,08 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1248-8M-50, pitch 8M, width 50 mm, length 1248 mm, 156 teeth, endless loop
ATTI • Code 062485 • CF HTD12480850
HTD timing belt 1248-8M-50, pitch 8M, width 50 mm, length 1248 mm, 156 teeth, endless loop
List price 124,47 € /pc.
Online 68,46 € /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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