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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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AT10-1320-16 timing belt, pitch 10, width 16 mm, length 1320 mm, 132 teeth, closed loop
ATTI • Code 040208 • CF CPOAT10132016
AT10-1320-16 timing belt, pitch 10, width 16 mm, length 1320 mm, 132 teeth, closed loop
List price 107,11 € /pc.
Online 58,91 € /pc.
On Order
(Ship. 6-7 days)
AT10-1320-25 toothed belt, pitch 10, width 25 mm, length 1320 mm, 132 teeth, closed loop
ATTI • Code 040209 • CF CPOAT10132025
AT10-1320-25 toothed belt, pitch 10, width 25 mm, length 1320 mm, 132 teeth, closed loop
List price 167,36 € /pc.
Online 92,05 € /pc.
On Order
(Ship. 6-7 days)
AT10-1320-32 toothed belt, pitch 10, width 32 mm, length 1320 mm, 132 teeth, closed loop
ATTI • Code 040210 • CF CPOAT10132032
AT10-1320-32 toothed belt, pitch 10, width 32 mm, length 1320 mm, 132 teeth, closed loop
List price 214,22 € /pc.
Online 117,82 € /pc.
On Order
(Ship. 6-7 days)
AT10-1320-50 toothed belt, pitch 10, width 50 mm, length 1320 mm, 132 teeth, closed loop
ATTI • Code 040211 • CF CPOAT10132050
AT10-1320-50 toothed belt, pitch 10, width 50 mm, length 1320 mm, 132 teeth, closed loop
List price 334,72 € /pc.
Online 184,10 € /pc.
On Order
(Ship. 6-7 days)
AT10-1400-50 timing belt, pitch 10, width 50 mm, length 1400 mm, 140 teeth, closed loop
ATTI • Code 040215 • CF CPOAT10140050
AT10-1400-50 timing belt, pitch 10, width 50 mm, length 1400 mm, 140 teeth, closed loop
List price 351,64 € /pc.
Online 193,40 € /pc.
On Order
(Ship. 6-7 days)
AT10-1500-16 timing belt, pitch 10, width 16 mm, length 1500 mm, 150 teeth, closed loop
ATTI • Code 040216 • CF CPOAT10150016
AT10-1500-16 timing belt, pitch 10, width 16 mm, length 1500 mm, 150 teeth, closed loop
List price 115,89 € /pc.
Online 63,74 € /pc.
On Order
(Ship. 6-7 days)
AT10-1500-25 timing belt, pitch 10, width 25 mm, length 1500 mm, 150 teeth, endless loop
ATTI • Code 040217 • CF CPOAT10150025
AT10-1500-25 timing belt, pitch 10, width 25 mm, length 1500 mm, 150 teeth, endless loop
List price 181,07 € /pc.
Online 99,59 € /pc.
On Order
(Ship. 6-7 days)
AT10-1500-32 toothed belt, pitch 10, width 32 mm, length 1500 mm, 150 teeth, closed loop
ATTI • Code 040218 • CF CPOAT10150032
AT10-1500-32 toothed belt, pitch 10, width 32 mm, length 1500 mm, 150 teeth, closed loop
List price 231,78 € /pc.
Online 127,48 € /pc.
On Order
(Ship. 6-7 days)
AT10-1500-50 toothed belt, pitch 10, width 50 mm, length 1500 mm, 150 teeth, closed loop
ATTI • Code 040219 • CF CPOAT10150050
AT10-1500-50 toothed belt, pitch 10, width 50 mm, length 1500 mm, 150 teeth, closed loop
List price 362,15 € /pc.
Online 199,18 € /pc.
On Order
(Ship. 6-7 days)
AT10-1600-16 toothed belt, pitch 10, width 16 mm, development 1600 mm, 160 teeth, closed loop
ATTI • Code 040220 • CF CPOAT10160016
AT10-1600-16 toothed belt, pitch 10, width 16 mm, development 1600 mm, 160 teeth, closed loop
List price 122,77 € /pc.
Online 67,52 € /pc.
On Order
(Ship. 6-7 days)
AT10-1600-32 timing belt, pitch 10, width 32 mm, length 1600 mm, 160 teeth, closed loop
ATTI • Code 040222 • CF CPOAT10160032
AT10-1600-32 timing belt, pitch 10, width 32 mm, length 1600 mm, 160 teeth, closed loop
List price 245,54 € /pc.
Online 135,04 € /pc.
On Order
(Ship. 6-7 days)
AT10-1600-50 timing belt, pitch 10, width 50 mm, length 1600 mm, 160 teeth, closed ring
ATTI • Code 040223 • CF CPOAT10160050
AT10-1600-50 timing belt, pitch 10, width 50 mm, length 1600 mm, 160 teeth, closed ring
List price 383,66 € /pc.
Online 211,01 € /pc.
On Order
(Ship. 6-7 days)
AT10-1700-32 toothed belt, pitch 10, width 32 mm, length 1700 mm, 170 teeth, closed-loop
ATTI • Code 040226 • CF CPOAT10170032
AT10-1700-32 toothed belt, pitch 10, width 32 mm, length 1700 mm, 170 teeth, closed-loop
List price 259,58 € /pc.
Online 142,77 € /pc.
On Order
(Ship. 6-7 days)
AT10-1700-50 timing belt, pitch 10, width 50 mm, length 1700 mm, 170 teeth, closed loop
ATTI • Code 040227 • CF CPOAT10170050
AT10-1700-50 timing belt, pitch 10, width 50 mm, length 1700 mm, 170 teeth, closed loop
List price 405,60 € /pc.
Online 223,08 € /pc.
On Order
(Ship. 6-7 days)
AT10-1800-16 synchronous belt, pitch 10, width 16 mm, length 1800 mm, 180 teeth, closed loop
ATTI • Code 040228 • CF CPOAT10180016
AT10-1800-16 synchronous belt, pitch 10, width 16 mm, length 1800 mm, 180 teeth, closed loop
List price 142,52 € /pc.
Online 78,38 € /pc.
On Order
(Ship. 6-7 days)
AT10-1800-25 timing belt, pitch 10, width 25 mm, length 1800 mm, 180 teeth, closed loop
ATTI • Code 040229 • CF CPOAT10180025
AT10-1800-25 timing belt, pitch 10, width 25 mm, length 1800 mm, 180 teeth, closed loop
List price 222,69 € /pc.
Online 122,48 € /pc.
On Order
(Ship. 6-7 days)
AT10-1800-32 toothed belt, pitch 10, width 32 mm, length 1800 mm, 180 teeth, closed loop
ATTI • Code 040230 • CF CPOAT10180032
AT10-1800-32 toothed belt, pitch 10, width 32 mm, length 1800 mm, 180 teeth, closed loop
List price 285,04 € /pc.
Online 156,77 € /pc.
On Order
(Ship. 6-7 days)
AT10-1800-50 timing belt, pitch 10, width 50 mm, length 1800 mm, 180 teeth, closed loop
ATTI • Code 040231 • CF CPOAT10180050
AT10-1800-50 timing belt, pitch 10, width 50 mm, length 1800 mm, 180 teeth, closed loop
List price 445,37 € /pc.
Online 244,95 € /pc.
On Order
(Ship. 6-7 days)
HTD 425-5M-09 timing belt, pitch 5M, width 9 mm, circumference 425 mm, 85 teeth, closed loop
ATTI • Code 040309 • CF HTD04250509
HTD 425-5M-09 timing belt, pitch 5M, width 9 mm, circumference 425 mm, 85 teeth, closed loop
List price 9,90 € /pc.
Online 5,45 € /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 €