
Timing belt Optibelt 50 / 8M 4200 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
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Description
OPTIBELT 50 / 8M 4200 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 50 / 8M 4200 AFX and any equivalents.
This Optibelt Alpha Flex timing belt is identified by the code 50 / 8M 4200 AFX. It uses an HTD 8M profile with a 4200 mm length and an 8 mm pitch. The belt is used in synchronous drives where precise timing is required, such as industrial machinery and equipment.
To confirm fit, check the belt marking on the back of the old belt. The profile must be HTD 8M, the length must be 4200 mm, and the pitch must be 8 mm. The width is indicated by the 50 in the code, but always verify the width required by your drive.
Timing belts like this are common in applications where the belt must maintain exact synchronization between the pulley and the driven component. Inspect the pulleys for wear, proper alignment, and correct tension before installing a new belt. Replace the belt if you see cracks, missing teeth, or exposed cords.
When requesting a quote, send the complete code 50 / 8M 4200 AFX, the profile HTD 8M, and the length 4200 mm. If you are unsure, provide the old belt marking and the pulley details. We carry Optibelt belts and can help confirm the correct part.
Dimensions
- Profile
- HTD 8M
- Pitch
- 8mm
- Length
- 4200mm
Frequently asked questions
- What does the code 50 / 8M 4200 AFX mean?
- The code identifies an Optibelt Alpha Flex timing belt with an HTD 8M profile, a 4200 mm length, and an 8 mm pitch. The 50 indicates the width, but always verify the width required by your drive.
- How can I confirm this belt fits my drive?
- Check the old belt for the HTD 8M profile, 4200 mm length, and 8 mm pitch. Also confirm the width and pulley type. If you provide the old belt marking and pulley details, we can help confirm the correct belt.
- What should I send to request a quote?
- Send the complete code 50 / 8M 4200 AFX, the profile HTD 8M, and the length 4200 mm. If you have the old belt, include a photo of the marking and any pulley information.

