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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 3200-8M-30, pitch 8M, width 30 mm, length 3200 mm, 400 teeth, closed loop
ATTI • Code 062566 • CF HTD32008M30
HTD timing belt 3200-8M-30, pitch 8M, width 30 mm, length 3200 mm, 400 teeth, closed loop
List price 187,06 € /pc.
Online 102,89 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3200-8M-50, pitch 8M, width 50 mm, length 3200 mm, 400 teeth, closed loop
ATTI • Code 062567 • CF HTD32008M50
HTD timing belt 3200-8M-50, pitch 8M, width 50 mm, length 3200 mm, 400 teeth, closed loop
List price 311,76 € /pc.
Online 171,47 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 3280-8M-20, pitch 8M, width 20 mm, length 3280 mm, 410 teeth, closed loop
ATTI • Code 062568 • CF HTD32808M20
HTD toothed belt 3280-8M-20, pitch 8M, width 20 mm, length 3280 mm, 410 teeth, closed loop
List price 127,73 € /pc.
Online 70,25 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3280-8M-30, pitch 8M, width 30 mm, length 3280 mm, 410 teeth, closed loop
ATTI • Code 062569 • CF HTD32808M30
HTD timing belt 3280-8M-30, pitch 8M, width 30 mm, length 3280 mm, 410 teeth, closed loop
List price 191,58 € /pc.
Online 105,37 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3280-8M-50, pitch 8M, width 50 mm, length 3280 mm, 410 teeth, closed loop
ATTI • Code 062570 • CF HTD32808M50
HTD timing belt 3280-8M-50, pitch 8M, width 50 mm, length 3280 mm, 410 teeth, closed loop
List price 319,33 € /pc.
Online 175,63 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 3360-14M-40, pitch 14M, width 40 mm, length 3360 mm, 240 teeth, closed loop
ATTI • Code 062571 • CF HTD33601440
HTD belt 3360-14M-40, pitch 14M, width 40 mm, length 3360 mm, 240 teeth, closed loop
List price 364,70 € /pc.
Online 200,59 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3360-14M-85, pitch 14M, width 85 mm, length 3360 mm, 240 teeth, closed loop
ATTI • Code 062572 • CF HTD33601485
HTD timing belt 3360-14M-85, pitch 14M, width 85 mm, length 3360 mm, 240 teeth, closed loop
List price 774,99 € /pc.
Online 426,24 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3400-8M-20, pitch 8M, width 20 mm, length 3400 mm, 425 teeth, closed loop
ATTI • Code 062573 • CF HTD34008M20
HTD timing belt 3400-8M-20, pitch 8M, width 20 mm, length 3400 mm, 425 teeth, closed loop
List price 132,43 € /pc.
Online 72,84 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 3400-8M-30, pitch 8M, width 30 mm, length 3400 mm, 425 teeth, endless loop
ATTI • Code 062574 • CF HTD34000830
HTD toothed belt 3400-8M-30, pitch 8M, width 30 mm, length 3400 mm, 425 teeth, endless loop
List price 198,64 € /pc.
Online 109,25 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 3400-8M-50, pitch 8M, width 50 mm, length 3400 mm, 425 teeth, closed loop
ATTI • Code 062575 • CF HTD34008M50
HTD toothed belt 3400-8M-50, pitch 8M, width 50 mm, length 3400 mm, 425 teeth, closed loop
List price 331,08 € /pc.
Online 182,09 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 3600-8M-20, pitch 8M, width 20 mm, length 3600 mm, 450 teeth, closed loop
ATTI • Code 062576 • CF HTD36008M20
HTD belt 3600-8M-20, pitch 8M, width 20 mm, length 3600 mm, 450 teeth, closed loop
List price 140,32 € /pc.
Online 77,18 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 3600-8M-30, pitch 8M, width 30 mm, length 3600 mm, 450 teeth, closed loop
ATTI • Code 062577 • CF HTD36008M30
HTD belt 3600-8M-30, pitch 8M, width 30 mm, length 3600 mm, 450 teeth, closed loop
List price 210,47 € /pc.
Online 115,76 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3600-8M-50, pitch 8M, width 50 mm, length 3600 mm, 450 teeth, closed loop
ATTI • Code 062578 • CF HTD36008M50
HTD timing belt 3600-8M-50, pitch 8M, width 50 mm, length 3600 mm, 450 teeth, closed loop
List price 350,80 € /pc.
Online 192,94 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 3600-8M-85, pitch 8M, width 85 mm, length 3600 mm, 450 teeth, closed loop
ATTI • Code 062579 • CF HTD36008M85
HTD toothed belt 3600-8M-85, pitch 8M, width 85 mm, length 3600 mm, 450 teeth, closed loop
List price 596,35 € /pc.
Online 327,99 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 4000-8M-20, pitch 8M, width 20 mm, length 4000 mm, 500 teeth, closed loop
ATTI • Code 062580 • CF HTD40000820
HTD belt 4000-8M-20, pitch 8M, width 20 mm, length 4000 mm, 500 teeth, closed loop
List price 155,93 € /pc.
Online 85,76 € /pc.
On Order
(Ship. 6-7 days)
HTD synchronous belt 4000-8M-30, pitch 8M, width 30 mm, length 4000 mm, 500 teeth, closed loop
ATTI • Code 062581 • CF HTD40008M30
HTD synchronous belt 4000-8M-30, pitch 8M, width 30 mm, length 4000 mm, 500 teeth, closed loop
List price 233,89 € /pc.
Online 128,64 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 4000-8M-50, pitch 8M, width 50 mm, length 4000 mm, 500 teeth, endless loop
ATTI • Code 062582 • CF HTD40008M50
HTD timing belt 4000-8M-50, pitch 8M, width 50 mm, length 4000 mm, 500 teeth, endless loop
List price 389,82 € /pc.
Online 214,40 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 4200-8M-20, pitch 8M, width 20 mm, length 4200 mm, 525 teeth, closed ring
ATTI • Code 062583 • CF HTD42000820
HTD timing belt 4200-8M-20, pitch 8M, width 20 mm, length 4200 mm, 525 teeth, closed ring
List price 163,64 € /pc.
Online 90,00 € /pc.
On Order
(Ship. 6-7 days)
HTD synchronous belt 4200-8M-30, pitch 8M, width 30 mm, length 4200 mm, 525 teeth, closed loop
ATTI • Code 062584 • CF HTD42008M30
HTD synchronous belt 4200-8M-30, pitch 8M, width 30 mm, length 4200 mm, 525 teeth, closed loop
List price 245,46 € /pc.
Online 135,01 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 4200-8M-50, pitch 8M, width 50 mm, length 4200 mm, 525 teeth, endless loop
ATTI • Code 062585 • CF HTD42008M50
HTD toothed belt 4200-8M-50, pitch 8M, width 50 mm, length 4200 mm, 525 teeth, endless loop
List price 409,12 € /pc.
Online 225,01 € /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 €