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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 1640-8M-30, pitch 8M, width 30 mm, length 1640 mm, 205 teeth, closed loop
ATTI • Code 062526 • CF HTD16400830
HTD timing belt 1640-8M-30, pitch 8M, width 30 mm, length 1640 mm, 205 teeth, closed loop
List price 95,02 € /pc.
Online 52,26 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1640-8M-50, pitch 8M, width 50 mm, length 1640 mm, 205 teeth, closed loop
ATTI • Code 062527 • CF HTD16400850
HTD timing belt 1640-8M-50, pitch 8M, width 50 mm, length 1640 mm, 205 teeth, closed loop
List price 158,37 € /pc.
Online 87,10 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1652-14M-40, pitch 14M, width 40 mm, length 1652 mm, 118 teeth, joined in a loop
ATTI • Code 062528 • CF HTD16521440
HTD timing belt 1652-14M-40, pitch 14M, width 40 mm, length 1652 mm, 118 teeth, joined in a loop
List price 182,62 € /pc.
Online 100,44 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1652-14M-55, pitch 14M, width 55 mm, length 1652 mm, 118 teeth, closed loop
ATTI • Code 062529 • CF HTD16521455
HTD timing belt 1652-14M-55, pitch 14M, width 55 mm, length 1652 mm, 118 teeth, closed loop
List price 251,10 € /pc.
Online 138,11 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1656-8M-30, pitch 8M, width 30 mm, length 1656 mm, 207 teeth, closed loop
ATTI • Code 062530 • CF HTD16560830
HTD timing belt 1656-8M-30, pitch 8M, width 30 mm, length 1656 mm, 207 teeth, closed loop
List price 95,94 € /pc.
Online 52,77 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1680-8M-20, pitch 8M, width 20 mm, length 1680 mm, 210 teeth, closed loop
ATTI • Code 062531 • CF HTD16800820
HTD timing belt 1680-8M-20, pitch 8M, width 20 mm, length 1680 mm, 210 teeth, closed loop
List price 64,88 € /pc.
Online 35,68 € /pc.
On Order
(Ship. 6-7 days)
HTD 1728-8M-30 toothed belt, pitch 8M, width 30 mm, length 1728 mm, 216 teeth, closed loop
ATTI • Code 062532 • CF HTD17280830
HTD 1728-8M-30 toothed belt, pitch 8M, width 30 mm, length 1728 mm, 216 teeth, closed loop
List price 100,10 € /pc.
Online 55,06 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1750-14M-40, pitch 14M, width 40 mm, length 1750 mm, 125 teeth, closed loop
ATTI • Code 062533 • CF HTD17501440
HTD timing belt 1750-14M-40, pitch 14M, width 40 mm, length 1750 mm, 125 teeth, closed loop
List price 193,40 € /pc.
Online 106,37 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1750-14M-55, pitch 14M, width 55 mm, length 1750 mm, 125 teeth, closed loop
ATTI • Code 062534 • CF HTD17501455
HTD toothed belt 1750-14M-55, pitch 14M, width 55 mm, length 1750 mm, 125 teeth, closed loop
List price 265,93 € /pc.
Online 146,26 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1806-14M-170, pitch 14M, width 170 mm, length 1806 mm, 129 teeth, closed loop
ATTI • Code 062535 • CF HTD180614170
HTD timing belt 1806-14M-170, pitch 14M, width 170 mm, length 1806 mm, 129 teeth, closed loop
List price 847,75 € /pc.
Online 466,26 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1806-14M-40, pitch 14M, width 40 mm, length 1806 mm, 129 teeth, closed loop
ATTI • Code 062536 • CF HTD18061440
HTD timing belt 1806-14M-40, pitch 14M, width 40 mm, length 1806 mm, 129 teeth, closed loop
List price 199,46 € /pc.
Online 109,71 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 1820-14M-40, pitch 14M, width 40 mm, length 1820 mm, 130 teeth, closed loop
ATTI • Code 062537 • CF HTD18201440
HTD toothed belt 1820-14M-40, pitch 14M, width 40 mm, length 1820 mm, 130 teeth, closed loop
List price 201,10 € /pc.
Online 110,61 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1895-5M-09, pitch 5M, width 9 mm, length 1895 mm, 379 teeth, closed loop
ATTI • Code 062538 • CF HTD18950509
HTD timing belt 1895-5M-09, pitch 5M, width 9 mm, length 1895 mm, 379 teeth, closed loop
List price 39,98 € /pc.
Online 21,99 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1895-5M-15, pitch 5M, width 15 mm, length 1895 mm, 379 teeth, closed loop
ATTI • Code 062539 • CF HTD18950515
HTD belt 1895-5M-15, pitch 5M, width 15 mm, length 1895 mm, 379 teeth, closed loop
List price 66,63 € /pc.
Online 36,65 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 1895-5M-25, pitch 5M, width 25 mm, development 1895 mm, 379 teeth, closed loop
ATTI • Code 062540 • CF HTD18950525
HTD belt 1895-5M-25, pitch 5M, width 25 mm, development 1895 mm, 379 teeth, closed loop
List price 111,05 € /pc.
Online 61,08 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1904-8M-30, pitch 8M, width 30 mm, length 1904 mm, 238 teeth, closed loop
ATTI • Code 062541 • CF HTD19040830
HTD timing belt 1904-8M-30, pitch 8M, width 30 mm, length 1904 mm, 238 teeth, closed loop
List price 110,36 € /pc.
Online 60,70 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1936-8M-30, pitch 8M, width 30 mm, length 1936 mm, 242 teeth, closed loop
ATTI • Code 062542 • CF HTD19360830
HTD timing belt 1936-8M-30, pitch 8M, width 30 mm, length 1936 mm, 242 teeth, closed loop
List price 111,96 € /pc.
Online 61,58 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 1936-8M-85, pitch 8M, width 85 mm, length 1936 mm, 242 teeth, closed loop
ATTI • Code 062543 • CF HTD19360885
HTD timing belt 1936-8M-85, pitch 8M, width 85 mm, length 1936 mm, 242 teeth, closed loop
List price 317,22 € /pc.
Online 174,47 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2002-14M-40, pitch 14M, width 40 mm, length 2002 mm, 143 teeth, closed loop
ATTI • Code 062544 • CF HTD20021440
HTD timing belt 2002-14M-40, pitch 14M, width 40 mm, length 2002 mm, 143 teeth, closed loop
List price 221,13 € /pc.
Online 121,62 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2002-14M-55, pitch 14M, width 55 mm, length 2002 mm, 143 teeth, closed loop
ATTI • Code 062545 • CF HTD20021455
HTD toothed belt 2002-14M-55, pitch 14M, width 55 mm, length 2002 mm, 143 teeth, closed loop
List price 304,06 € /pc.
Online 167,24 € /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 €