
Timing belt Optibelt 25 AT20 / 1800 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
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Description
OPTIBELT 25 AT20 / 1800 AFX belongs to timing belt, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 25 AT20 / 1800 AFX and any equivalents.
This Optibelt Alpha Flex timing belt is identified by the code 25 AT20 / 1800 AFX. It uses the AT20 profile with a 20 mm pitch and an 1800 mm length. The belt is used in synchronous drives where the pulley grooves and belt teeth must mesh to transmit motion without slip.
Timing belts in this class are common on industrial drives such as conveyors, packaging equipment, machine tools, and other systems that require precise speed relationships between shafts. The AT20 profile is a metric tooth form, so the mating pulleys must have the matching AT20 groove geometry. Because the belt is 1800 mm long and has a 20 mm pitch, the drive center distance and pulley diameters must be sized for that combination.
To confirm fit, read the marking on the back of the old belt and compare it with 25 AT20 / 1800 AFX. Check the belt width, tooth profile, pitch, and length against the drive documentation or by measuring the old belt. Inspect the pulleys for worn grooves, debris, or damaged teeth, and verify that the flanges and tensioning system are in good condition.
When requesting a quote, send the complete belt code, the application, and any drive details you have. If the marking is faded, photos of the belt and pulleys help identify the correct item. We carry Optibelt Alpha Flex timing belts and can help confirm the right belt or suggest an equivalent.
Dimensions
- Profile
- AT20
- Pitch
- 20mm
- Length
- 1800mm
Frequently asked questions
- How do I confirm that this Optibelt belt fits my drive?
- Compare the code on your old belt with 25 AT20 / 1800 AFX. The AT20 profile, 20 mm pitch, and 1800 mm length must match the drive requirements. Check the pulley grooves and the belt width as well.
- What information should I send with my quote request?
- Send the full belt code, the equipment make and model if known, and photos of the old belt and pulleys. If you have a drive diagram or maintenance manual, include the belt specification from it.
- Can you help if the marking on my old belt is unreadable?
- Yes. Send photos of the belt and the pulleys, and provide any measurements you can take. We can help identify the correct Optibelt Alpha Flex timing belt or suggest an equivalent.

