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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 150-3M-15, pitch 3M, width 15 mm, length 150 mm, 50 teeth, closed loop
ATTI • Code 039112 • CF HTD01500315
HTD toothed belt 150-3M-15, pitch 3M, width 15 mm, length 150 mm, 50 teeth, closed loop
List price 6,24 € /pc.
Online 3,43 € /pc.
In Stock
(Ship. 1-2 days)
HTD 165-3M-15 timing belt, pitch 3M, width 15 mm, length 165 mm, 55 teeth, closed loop
ATTI • Code 039113 • CF HTD01650315
HTD 165-3M-15 timing belt, pitch 3M, width 15 mm, length 165 mm, 55 teeth, closed loop
List price 6,80 € /pc.
Online 3,74 € /pc.
In Stock
(Ship. 1-2 days)
HTD timing belt 180-3M-15, pitch 3M, width 15 mm, length 180 mm, 60 teeth, closed loop
ATTI • Code 039114 • CF HTD01800315
HTD timing belt 180-3M-15, pitch 3M, width 15 mm, length 180 mm, 60 teeth, closed loop
List price 7,44 € /pc.
Online 4,09 € /pc.
In Stock
(Ship. 1-2 days)
HTD timing belt 195-3M-15, pitch 3M, width 15 mm, length 195 mm, 65 teeth, closed loop
ATTI • Code 039115 • CF HTD01950315
HTD timing belt 195-3M-15, pitch 3M, width 15 mm, length 195 mm, 65 teeth, closed loop
List price 8,10 € /pc.
Online 4,46 € /pc.
In Stock
(Ship. 1-2 days)
HTD timing belt 900-5M-09, pitch 5M, width 9 mm, length 900 mm, 180 teeth, closed loop
ATTI • Code 039159 • CF HTD09000509
HTD timing belt 900-5M-09, pitch 5M, width 9 mm, length 900 mm, 180 teeth, closed loop
List price 19,22 € /pc.
Online 10,57 € /pc.
In Stock
(Ship. 1-2 days)
HTD timing belt 300-5M-25, pitch 5M, width 25 mm, length 300 mm, 60 teeth, closed loop
ATTI • Code 039203 • CF HTD03000525
HTD timing belt 300-5M-25, pitch 5M, width 25 mm, length 300 mm, 60 teeth, closed loop
List price 19,16 € /pc.
Online 10,54 € /pc.
In Stock
(Ship. 1-2 days)
HTD belt 1035-5M-25, pitch 5M, width 25 mm, length 1035 mm, 207 teeth, closed loop
ATTI • Code 039228 • CF HTD10350525
HTD belt 1035-5M-25, pitch 5M, width 25 mm, length 1035 mm, 207 teeth, closed loop
List price 60,63 € /pc.
Online 33,35 € /pc.
In Stock
(Ship. 1-2 days)
HTD timing belt 600-8M-50, pitch 8M, width 50 mm, length 600 mm, 75 teeth, closed loop
ATTI • Code 039243 • CF HTD06000850
HTD timing belt 600-8M-50, pitch 8M, width 50 mm, length 600 mm, 75 teeth, closed loop
List price 59,66 € /pc.
Online 32,82 € /pc.
In Stock
(Ship. 1-2 days)
HTD timing belt 880-8M-20, pitch 8M, width 20 mm, length 880 mm, 110 teeth, endless loop
ATTI • Code 039260 • CF HTD08800820
HTD timing belt 880-8M-20, pitch 8M, width 20 mm, length 880 mm, 110 teeth, endless loop
List price 35,14 € /pc.
Online 19,33 € /pc.
In Stock
(Ship. 1-2 days)
HTD toothed belt 920-8M-20, pitch 8M, width 20 mm, length 920 mm, 115 teeth, endless loop
ATTI • Code 039264 • CF HTD09200820
HTD toothed belt 920-8M-20, pitch 8M, width 20 mm, length 920 mm, 115 teeth, endless loop
List price 36,62 € /pc.
Online 20,14 € /pc.
In Stock
(Ship. 1-2 days)
HTD timing belt 1040-8M-20, pitch 8M, width 20 mm, length 1040 mm, 130 teeth, closed loop
ATTI • Code 039275 • CF HTD10400820
HTD timing belt 1040-8M-20, pitch 8M, width 20 mm, length 1040 mm, 130 teeth, closed loop
List price 41,52 € /pc.
Online 22,84 € /pc.
In Stock
(Ship. 1-2 days)
HTD timing belt 1200-8M-20, pitch 8M, width 20 mm, length 1200 mm, 150 teeth, closed loop
ATTI • Code 039282 • CF HTD12000820
HTD timing belt 1200-8M-20, pitch 8M, width 20 mm, length 1200 mm, 150 teeth, closed loop
List price 47,90 € /pc.
Online 26,35 € /pc.
In Stock
(Ship. 1-2 days)
HTD belt 1200-8M-30, pitch 8M, width 30 mm, length 1200 mm, 150 teeth, closed loop
ATTI • Code 039283 • CF HTD12000830
HTD belt 1200-8M-30, pitch 8M, width 30 mm, length 1200 mm, 150 teeth, closed loop
List price 71,84 € /pc.
Online 39,51 € /pc.
In Stock
(Ship. 1-2 days)
HTD 1760-8M-50 timing belt, pitch 8M, width 50 mm, length 1760 mm, 220 teeth, looped
ATTI • Code 039299 • CF HTD17600850
HTD 1760-8M-50 timing belt, pitch 8M, width 50 mm, length 1760 mm, 220 teeth, looped
List price 170,13 € /pc.
Online 93,57 € /pc.
In Stock
(Ship. 1-2 days)
HTD timing belt 1800-8M-20, pitch 8M, width 20 mm, length 1800 mm, 225 teeth, closed loop
ATTI • Code 039301 • CF HTD18000820
HTD timing belt 1800-8M-20, pitch 8M, width 20 mm, length 1800 mm, 225 teeth, closed loop
List price 69,56 € /pc.
Online 38,26 € /pc.
In Stock
(Ship. 1-2 days)
Timing belt T2.5- 950-06, pitch 2.5, width 6 mm, length 950 mm, 380 teeth, closed loop
ATTI • Code 039423 • CF CPOT02095006
Timing belt T2.5- 950-06, pitch 2.5, width 6 mm, length 950 mm, 380 teeth, closed loop
List price 29,52 € /pc.
Online 16,24 € /pc.
In Stock
(Ship. 1-2 days)
T5 toothed belt - 225-10, pitch 5, width 10 mm, length 225 mm, 45 teeth, closed loop
ATTI • Code 039438 • CF CPOT05022510
T5 toothed belt - 225-10, pitch 5, width 10 mm, length 225 mm, 45 teeth, closed loop
List price 16,46 € /pc.
Online 9,05 € /pc.
In Stock
(Ship. 1-2 days)
T5 timing belt - 270-25, pitch 5, width 25 mm, length 270 mm, 54 teeth, closed loop
ATTI • Code 039452 • CF CPOT05027025
T5 timing belt - 270-25, pitch 5, width 25 mm, length 270 mm, 54 teeth, closed loop
List price 41,84 € /pc.
Online 23,01 € /pc.
In Stock
(Ship. 1-2 days)
T5 Timing Belt - 280-25, pitch 5, width 25 mm, length 280 mm, 56 teeth, closed loop
ATTI • Code 039455 • CF CPOT05028025
T5 Timing Belt - 280-25, pitch 5, width 25 mm, length 280 mm, 56 teeth, closed loop
List price 41,84 € /pc.
Online 23,01 € /pc.
In Stock
(Ship. 1-2 days)
T5 timing belt - 295-25, pitch 5, width 25 mm, length 295 mm, 59 teeth, closed loop
ATTI • Code 039458 • CF CPOT05029525
T5 timing belt - 295-25, pitch 5, width 25 mm, length 295 mm, 59 teeth, closed loop
List price 42,98 € /pc.
Online 23,64 € /pc.
In Stock
(Ship. 1-2 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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