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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 2590-14M-170, pitch 14M, width 170 mm, length 2590 mm, 185 teeth, closed loop
ATTI • Code 039370 • CF HTD259014170
HTD timing belt 2590-14M-170, pitch 14M, width 170 mm, length 2590 mm, 185 teeth, closed loop
List price 1.216,95 € /pc.
Online 669,32 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 2800-14M-40, pitch 14M, width 40 mm, length 2800 mm, 200 teeth, closed ring
ATTI • Code 039371 • CF HTD28001440
HTD belt 2800-14M-40, pitch 14M, width 40 mm, length 2800 mm, 200 teeth, closed ring
List price 309,51 € /pc.
Online 170,23 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2800-14M-55, pitch 14M, width 55 mm, length 2800 mm, 200 teeth, closed loop
ATTI • Code 039372 • CF HTD28001455
HTD timing belt 2800-14M-55, pitch 14M, width 55 mm, length 2800 mm, 200 teeth, closed loop
List price 425,57 € /pc.
Online 234,06 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2800-14M-85, pitch 14M, width 85 mm, length 2800 mm, 200 teeth, closed loop
ATTI • Code 039373 • CF HTD28001485
HTD timing belt 2800-14M-85, pitch 14M, width 85 mm, length 2800 mm, 200 teeth, closed loop
List price 657,70 € /pc.
Online 361,73 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2800-14M-115, pitch 14M, width 115 mm, length 2800 mm, 200 teeth, closed loop
ATTI • Code 039374 • CF HTD280014115
HTD timing belt 2800-14M-115, pitch 14M, width 115 mm, length 2800 mm, 200 teeth, closed loop
List price 889,82 € /pc.
Online 489,40 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2800-14M-170, pitch 14M, width 170 mm, length 2800 mm, 200 teeth, endless loop
ATTI • Code 039375 • CF HTD280014170
HTD timing belt 2800-14M-170, pitch 14M, width 170 mm, length 2800 mm, 200 teeth, endless loop
List price 1.315,39 € /pc.
Online 723,46 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3150-14M-40, pitch 14M, width 40 mm, length 3150 mm, 225 teeth, closed loop
ATTI • Code 039376 • CF HTD31501440
HTD timing belt 3150-14M-40, pitch 14M, width 40 mm, length 3150 mm, 225 teeth, closed loop
List price 342,00 € /pc.
Online 188,10 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 3150-14M-55, pitch 14M, width 55 mm, length 3150 mm, 225 teeth, closed loop
ATTI • Code 039377 • CF HTD31501455
HTD toothed belt 3150-14M-55, pitch 14M, width 55 mm, length 3150 mm, 225 teeth, closed loop
List price 470,23 € /pc.
Online 258,63 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3150-14M-85, pitch 14M, width 85 mm, length 3150 mm, 225 teeth, closed loop
ATTI • Code 039378 • CF HTD31501485
HTD timing belt 3150-14M-85, pitch 14M, width 85 mm, length 3150 mm, 225 teeth, closed loop
List price 726,73 € /pc.
Online 399,70 € /pc.
On Order
(Ship. 6-7 days)
HTD 3150-14M-115 toothed belt, pitch 14M, width 115 mm, length 3150 mm, 225 teeth, closed loop
ATTI • Code 039379 • CF HTD315014115
HTD 3150-14M-115 toothed belt, pitch 14M, width 115 mm, length 3150 mm, 225 teeth, closed loop
List price 983,23 € /pc.
Online 540,78 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3150-14M-170, pitch 14M, width 170 mm, length 3150 mm, 225 teeth, closed loop
ATTI • Code 039380 • CF HTD315014170
HTD timing belt 3150-14M-170, pitch 14M, width 170 mm, length 3150 mm, 225 teeth, closed loop
List price 1.453,46 € /pc.
Online 799,40 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3500-14M-40, pitch 14M, width 40 mm, length 3500 mm, 250 teeth, closed loop
ATTI • Code 039381 • CF HTD35001440
HTD timing belt 3500-14M-40, pitch 14M, width 40 mm, length 3500 mm, 250 teeth, closed loop
List price 379,91 € /pc.
Online 208,95 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3500-14M-55, pitch 14M, width 55 mm, length 3500 mm, 250 teeth, closed loop
ATTI • Code 039382 • CF HTD35001455
HTD timing belt 3500-14M-55, pitch 14M, width 55 mm, length 3500 mm, 250 teeth, closed loop
List price 522,38 € /pc.
Online 287,31 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3500-14M-85, pitch 14M, width 85 mm, development 3500 mm, 250 teeth, closed loop
ATTI • Code 039383 • CF HTD35001485
HTD timing belt 3500-14M-85, pitch 14M, width 85 mm, development 3500 mm, 250 teeth, closed loop
List price 807,33 € /pc.
Online 444,03 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3500-14M-115, pitch 14M, width 115 mm, length 3500 mm, 250 teeth, closed-loop
ATTI • Code 039384 • CF HTD350014115
HTD timing belt 3500-14M-115, pitch 14M, width 115 mm, length 3500 mm, 250 teeth, closed-loop
List price 1.092,26 € /pc.
Online 600,74 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3500-14M-170, pitch 14M, width 170 mm, length 3500 mm, 250 teeth, closed loop
ATTI • Code 039385 • CF HTD350014170
HTD timing belt 3500-14M-170, pitch 14M, width 170 mm, length 3500 mm, 250 teeth, closed loop
List price 1.614,64 € /pc.
Online 888,05 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 3850-14M-40, pitch 14M, width 40 mm, length 3850 mm, 275 teeth, closed loop
ATTI • Code 039386 • CF HTD38501440
HTD belt 3850-14M-40, pitch 14M, width 40 mm, length 3850 mm, 275 teeth, closed loop
List price 417,84 € /pc.
Online 229,81 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 3850-14M-55, pitch 14M, width 55 mm, length 3850 mm, 275 teeth, closed loop
ATTI • Code 039387 • CF HTD38501455
HTD belt 3850-14M-55, pitch 14M, width 55 mm, length 3850 mm, 275 teeth, closed loop
List price 574,52 € /pc.
Online 315,99 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 3850-14M-85, pitch 14M, width 85 mm, length 3850 mm, 275 teeth, closed loop
ATTI • Code 039388 • CF HTD38501485
HTD belt 3850-14M-85, pitch 14M, width 85 mm, length 3850 mm, 275 teeth, closed loop
List price 887,90 € /pc.
Online 488,35 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 3850-14M-115, pitch 14M, width 115 mm, length 3850 mm, 275 teeth, closed loop
ATTI • Code 039389 • CF HTD385014115
HTD belt 3850-14M-115, pitch 14M, width 115 mm, length 3850 mm, 275 teeth, closed loop
List price 1.201,29 € /pc.
Online 660,71 € /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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