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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 597-3M-09, pitch 3M, width 9 mm, length 597 mm, 199 teeth, closed loop
ATTI • Code 062366 • CF HTD05970309
HTD toothed belt 597-3M-09, pitch 3M, width 9 mm, length 597 mm, 199 teeth, closed loop
List price 13,86 € /pc.
Online 7,62 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 597-3M-12, pitch 3M, width 12 mm, length 597 mm, 199 teeth, closed loop
ATTI • Code 062367 • CF HTD05970312
HTD toothed belt 597-3M-12, pitch 3M, width 12 mm, length 597 mm, 199 teeth, closed loop
List price 18,49 € /pc.
Online 10,17 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 597-3M-15, pitch 3M, width 15 mm, length 597 mm, 199 teeth, closed loop
ATTI • Code 062368 • CF HTD05970315
HTD timing belt 597-3M-15, pitch 3M, width 15 mm, length 597 mm, 199 teeth, closed loop
List price 23,10 € /pc.
Online 12,71 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 606-3M-03, pitch 3M, width 3 mm, length 606 mm, 202 teeth, endless loop
ATTI • Code 062369 • CF HTD06060303
HTD timing belt 606-3M-03, pitch 3M, width 3 mm, length 606 mm, 202 teeth, endless loop
List price 4,70 € /pc.
Online 2,58 € /pc.
On Order
(Ship. 6-7 days)
HTD 606-3M-06 timing belt, pitch 3M, width 6 mm, length 606 mm, 202 teeth, closed loop
ATTI • Code 062370 • CF HTD06060306
HTD 606-3M-06 timing belt, pitch 3M, width 6 mm, length 606 mm, 202 teeth, closed loop
List price 9,38 € /pc.
Online 5,16 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 606-3M-09, pitch 3M, width 9 mm, length 606 mm, 202 teeth, closed loop
ATTI • Code 062371 • CF HTD06060309
HTD toothed belt 606-3M-09, pitch 3M, width 9 mm, length 606 mm, 202 teeth, closed loop
List price 14,07 € /pc.
Online 7,74 € /pc.
On Order
(Ship. 6-7 days)
HTD 606-3M-12 toothed belt, pitch 3M, width 12 mm, length 606 mm, 202 teeth, closed loop
ATTI • Code 062372 • CF HTD06060312
HTD 606-3M-12 toothed belt, pitch 3M, width 12 mm, length 606 mm, 202 teeth, closed loop
List price 18,76 € /pc.
Online 10,32 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 608-8M-20, pitch 8M, width 20 mm, length 608 mm, 76 teeth, closed loop
ATTI • Code 062373 • CF HTD06080820
HTD toothed belt 608-8M-20, pitch 8M, width 20 mm, length 608 mm, 76 teeth, closed loop
List price 24,16 € /pc.
Online 13,29 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 610-5M-09, pitch 5M, width 9 mm, length 610 mm, 122 teeth, closed loop
ATTI • Code 062374 • CF HTD06100509
HTD timing belt 610-5M-09, pitch 5M, width 9 mm, length 610 mm, 122 teeth, closed loop
List price 13,69 € /pc.
Online 7,53 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 612-3M-06, pitch 3M, width 6 mm, length 612 mm, 204 teeth, closed loop
ATTI • Code 062375 • CF HTD06120306
HTD toothed belt 612-3M-06, pitch 3M, width 6 mm, length 612 mm, 204 teeth, closed loop
List price 9,52 € /pc.
Online 5,24 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 612-3M-12, pitch 3M, width 12 mm, length 612 mm, 204 teeth, closed loop
ATTI • Code 062376 • CF HTD06120312
HTD timing belt 612-3M-12, pitch 3M, width 12 mm, length 612 mm, 204 teeth, closed loop
List price 19,03 € /pc.
Online 10,47 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 632-8M-20, pitch 8M, width 20 mm, length 632 mm, 79 teeth, closed loop
ATTI • Code 062377 • CF HTD06320820
HTD belt 632-8M-20, pitch 8M, width 20 mm, length 632 mm, 79 teeth, closed loop
List price 25,19 € /pc.
Online 13,85 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 632-8M-30, pitch 8M, width 30 mm, length 632 mm, 79 teeth, closed loop
ATTI • Code 062378 • CF HTD06320830
HTD toothed belt 632-8M-30, pitch 8M, width 30 mm, length 632 mm, 79 teeth, closed loop
List price 37,76 € /pc.
Online 20,77 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 632-8M-50, pitch 8M, width 50 mm, length 632 mm, 79 teeth, closed loop
ATTI • Code 062379 • CF HTD06320850
HTD timing belt 632-8M-50, pitch 8M, width 50 mm, length 632 mm, 79 teeth, closed loop
List price 62,94 € /pc.
Online 34,61 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 632-8M-85, pitch 8M, width 85 mm, length 632 mm, 79 teeth, closed loop
ATTI • Code 062380 • CF HTD06320885
HTD timing belt 632-8M-85, pitch 8M, width 85 mm, length 632 mm, 79 teeth, closed loop
List price 106,99 € /pc.
Online 58,85 € /pc.
On Order
(Ship. 6-7 days)
HTD 633-3M-06 toothed belt, pitch 3M, width 6 mm, length 633 mm, 211 teeth, closed loop
ATTI • Code 062381 • CF HTD06330306
HTD 633-3M-06 toothed belt, pitch 3M, width 6 mm, length 633 mm, 211 teeth, closed loop
List price 9,84 € /pc.
Online 5,41 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 633-3M-09, pitch 3M, width 9 mm, length 633 mm, 211 teeth, closed loop
ATTI • Code 062382 • CF HTD06330309
HTD timing belt 633-3M-09, pitch 3M, width 9 mm, length 633 mm, 211 teeth, closed loop
List price 14,76 € /pc.
Online 8,12 € /pc.
On Order
(Ship. 6-7 days)
HTD 633-3M-12 toothed belt, pitch 3M, width 12 mm, length 633 mm, 211 teeth, closed loop
ATTI • Code 062383 • CF HTD06330312
HTD 633-3M-12 toothed belt, pitch 3M, width 12 mm, length 633 mm, 211 teeth, closed loop
List price 19,67 € /pc.
Online 10,82 € /pc.
On Order
(Ship. 6-7 days)
HTD 633-3M-15 timing belt, pitch 3M, width 15 mm, length 633 mm, 211 teeth, closed loop
ATTI • Code 062384 • CF HTD06330315
HTD 633-3M-15 timing belt, pitch 3M, width 15 mm, length 633 mm, 211 teeth, closed loop
List price 24,60 € /pc.
Online 13,53 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 650-5M-09, pitch 5M, width 9 mm, length 650 mm, 130 teeth, closed loop
ATTI • Code 062385 • CF HTD06500509
HTD timing belt 650-5M-09, pitch 5M, width 9 mm, length 650 mm, 130 teeth, closed loop
List price 14,58 € /pc.
Online 8,02 € /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 €