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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 2000-8M-20, pitch 8M, width 20 mm, length 2000 mm, 250 teeth, closed loop
ATTI • Code 039305 • CF HTD20000820
HTD timing belt 2000-8M-20, pitch 8M, width 20 mm, length 2000 mm, 250 teeth, closed loop
List price 77,20 € /pc.
Online 42,46 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2000-8M-30, pitch 8M, width 30 mm, length 2000 mm, 250 teeth, closed loop
ATTI • Code 039306 • CF HTD20000830
HTD toothed belt 2000-8M-30, pitch 8M, width 30 mm, length 2000 mm, 250 teeth, closed loop
List price 115,80 € /pc.
Online 63,69 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 2000-8M-50, pitch 8M, width 50 mm, length 2000 mm, 250 teeth, closed loop
ATTI • Code 039307 • CF HTD20000850
HTD belt 2000-8M-50, pitch 8M, width 50 mm, length 2000 mm, 250 teeth, closed loop
List price 193,01 € /pc.
Online 106,15 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2000-8M-85, pitch 8M, width 85 mm, length 2000 mm, 250 teeth, closed loop
ATTI • Code 039308 • CF HTD20000885
HTD timing belt 2000-8M-85, pitch 8M, width 85 mm, length 2000 mm, 250 teeth, closed loop
List price 328,10 € /pc.
Online 180,46 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2400-8M-20, pitch 8M, width 20 mm, length 2400 mm, 300 teeth, closed loop
ATTI • Code 039309 • CF HTD24000820
HTD toothed belt 2400-8M-20, pitch 8M, width 20 mm, length 2400 mm, 300 teeth, closed loop
List price 93,48 € /pc.
Online 51,42 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2400-8M-30, pitch 8M, width 30 mm, length 2400 mm, 300 teeth, closed loop
ATTI • Code 039310 • CF HTD24000830
HTD toothed belt 2400-8M-30, pitch 8M, width 30 mm, length 2400 mm, 300 teeth, closed loop
List price 140,24 € /pc.
Online 77,13 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2400-8M-50, pitch 8M, width 50 mm, length 2400 mm, 300 teeth, closed loop
ATTI • Code 039311 • CF HTD24000850
HTD timing belt 2400-8M-50, pitch 8M, width 50 mm, length 2400 mm, 300 teeth, closed loop
List price 233,73 € /pc.
Online 128,55 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2400-8M-85, pitch 8M, width 85 mm, length 2400 mm, 300 teeth, endless loop
ATTI • Code 039312 • CF HTD24000885
HTD toothed belt 2400-8M-85, pitch 8M, width 85 mm, length 2400 mm, 300 teeth, endless loop
List price 397,33 € /pc.
Online 218,53 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2600-8M-20, pitch 8M, width 20 mm, length 2600 mm, 325 teeth, closed loop
ATTI • Code 039313 • CF HTD26000820
HTD toothed belt 2600-8M-20, pitch 8M, width 20 mm, length 2600 mm, 325 teeth, closed loop
List price 101,39 € /pc.
Online 55,76 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2600-8M-30, pitch 8M, width 30 mm, length 2600 mm, 325 teeth, closed loop
ATTI • Code 039314 • CF HTD26000830
HTD timing belt 2600-8M-30, pitch 8M, width 30 mm, length 2600 mm, 325 teeth, closed loop
List price 152,07 € /pc.
Online 83,64 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2600-8M-50, pitch 8M, width 50 mm, length 2600 mm, 325 teeth, closed loop
ATTI • Code 039315 • CF HTD26000850
HTD timing belt 2600-8M-50, pitch 8M, width 50 mm, length 2600 mm, 325 teeth, closed loop
List price 253,44 € /pc.
Online 139,39 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2600-8M-85, pitch 8M, width 85 mm, length 2600 mm, 325 teeth, closed loop
ATTI • Code 039316 • CF HTD26000885
HTD timing belt 2600-8M-85, pitch 8M, width 85 mm, length 2600 mm, 325 teeth, closed loop
List price 430,86 € /pc.
Online 236,97 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2800-8M-20, pitch 8M, width 20 mm, length 2800 mm, 350 teeth, closed loop
ATTI • Code 039317 • CF HTD28000820
HTD toothed belt 2800-8M-20, pitch 8M, width 20 mm, length 2800 mm, 350 teeth, closed loop
List price 109,10 € /pc.
Online 60,01 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2800-8M-30, pitch 8M, width 30 mm, length 2800 mm, 350 teeth, closed loop
ATTI • Code 039318 • CF HTD28000830
HTD timing belt 2800-8M-30, pitch 8M, width 30 mm, length 2800 mm, 350 teeth, closed loop
List price 163,64 € /pc.
Online 90,00 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2800-8M-50, pitch 8M, width 50 mm, length 2800 mm, 350 teeth, closed loop
ATTI • Code 039319 • CF HTD28000850
HTD toothed belt 2800-8M-50, pitch 8M, width 50 mm, length 2800 mm, 350 teeth, closed loop
List price 272,74 € /pc.
Online 150,01 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 2800-8M-85, pitch 8M, width 85 mm, length 2800 mm, 350 teeth, closed loop
ATTI • Code 039320 • CF HTD28000885
HTD belt 2800-8M-85, pitch 8M, width 85 mm, length 2800 mm, 350 teeth, closed loop
List price 463,67 € /pc.
Online 255,02 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 966-14M-40, pitch 14M, width 40 mm, length 966 mm, 69 teeth, endless loop
ATTI • Code 039321 • CF HTD09661440
HTD timing belt 966-14M-40, pitch 14M, width 40 mm, length 966 mm, 69 teeth, endless loop
List price 110,18 € /pc.
Online 60,60 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 966-14M-55, pitch 14M, width 55 mm, length 966 mm, 69 teeth, closed loop
ATTI • Code 039322 • CF HTD09661455
HTD timing belt 966-14M-55, pitch 14M, width 55 mm, length 966 mm, 69 teeth, closed loop
List price 151,48 € /pc.
Online 83,31 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 966-14M-85, pitch 14M, width 85 mm, length 966 mm, 69 teeth, endless loop
ATTI • Code 039323 • CF HTD09661485
HTD belt 966-14M-85, pitch 14M, width 85 mm, length 966 mm, 69 teeth, endless loop
List price 234,11 € /pc.
Online 128,76 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 966-14M-115, pitch 14M, width 115 mm, length 966 mm, 69 teeth, closed loop
ATTI • Code 039324 • CF HTD096614115
HTD timing belt 966-14M-115, pitch 14M, width 115 mm, length 966 mm, 69 teeth, closed loop
List price 316,74 € /pc.
Online 174,20 € /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 €