
Timing belt Optibelt 75 AT20 / 4400 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
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Description
OPTIBELT 75 AT20 / 4400 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 75 AT20 / 4400 AFX and any equivalents.
This Optibelt Alpha Flex belt is a timing belt with an AT20 profile and a 4400 mm length. The 20 mm pitch is the center-to-center distance between adjacent teeth, which sets how the belt meshes with the pulley grooves.
The AT20 profile is a metric tooth profile used in synchronous drives. The 4400 mm length is the datum length of the belt, measured around its pitch line. Together with the 20 mm pitch, these two dimensions define the drive geometry: the belt must match the pulley tooth profile and the required center distance.
When you read the marking on the back of the belt, confirm the profile and length match what your drive needs. If you are replacing an existing belt, the profile and length are the first two values to verify. For a quote, send the part number 75 AT20 / 4400 AFX, or the profile and length, and the team can confirm the belt or suggest an equivalent.
Dimensions
- Profile
- AT20
- Pitch
- 20mm
- Length
- 4400mm
Frequently asked questions
- What does the AT20 profile mean on this Optibelt belt?
- AT20 is the tooth profile of the belt. The 20 mm pitch is the distance between adjacent tooth centers, so the belt is designed to run on pulleys with a matching AT20 groove profile.
- How do I confirm this 4400 mm belt fits my drive?
- Check the marking on the back of the old belt for the profile and length. If it reads AT20 and 4400 mm, this belt matches those dimensions. You can also measure the pitch and the length around the pitch line.
- What do I send to request a quote for this belt?
- Send the part number 75 AT20 / 4400 AFX, or the profile AT20 and length 4400 mm. If you have the old belt, include a photo of the back marking so the team can confirm the right belt or suggest an equivalent.

