Skip to main content
All products
Optibelt Alpha Flex timing belt · OPTIBELT 25 AT5 / 4000 AFX
Timing belt Optibelt 25 AT5 / 4000 AFX

OPTIBELTBrand We Carry

Timing belt Optibelt 25 AT5 / 4000 AFX

Manufacturer part number25 AT5 / 4000 AFXAlso known as: 25AT5/4000AFX · 25-AT5 / 4000 AFX
Subcategory
Timing belts
Series
Alpha Flex
Get a quote for 25 AT5 / 4000 AFX on WhatsApp

We reply promptly.

Tell us the quantity you need and request a quote by WhatsApp or email.

Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.

Ask on WhatsAppAsk by email

Description

OPTIBELT 25 AT5 / 4000 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 AT5 / 4000 AFX and any equivalents.

The Optibelt 25 AT5 / 4000 AFX is an Alpha Flex timing belt with an AT5 profile, a 4000 mm length and a 5 mm pitch. Before you fit it, inspect the drive and sheaves so the new belt runs true from the first start.

Check the sheaves for worn grooves, burrs, corrosion or debris, and confirm they are aligned and securely mounted. Look at the shaft bearings and tensioner for play, noise or rough rotation, and correct any issue before the belt goes on. A drive that is not clean and aligned will shorten the life of any timing belt.

Confirm the part number on the old belt matches 25 AT5 / 4000 AFX, then compare the AT5 profile and 4000 mm length. If the marking is worn away, measure the old belt and send us the profile, length and width so we can help confirm the right belt or suggest an equivalent.

When you are ready to order, send the part number 25 AT5 / 4000 AFX by WhatsApp or email. Our team replies promptly and can help you confirm the belt or find a match for your drive.

Dimensions

Profile
AT5
Pitch
5mm
Length
4000mm

Frequently asked questions

What drive checks should I do before fitting this belt?
Inspect the sheaves for wear, damage or misalignment, and check the bearings and tensioner for play or rough rotation. Clean the drive and correct any problems before installing the new belt.
How do I confirm the old belt is the same as the 25 AT5 / 4000 AFX?
Read the marking on the back of the old belt. It should show the AT5 profile and 4000 mm length. If the marking is not clear, measure the belt and send us the profile, length and width.
How do I request a quote for the 25 AT5 / 4000 AFX?
Send the part number 25 AT5 / 4000 AFX by WhatsApp or email. Our team replies promptly and can help confirm the right belt or suggest an equivalent.
Get a quote for 25 AT5 / 4000 AFX on WhatsApp
Quote on WhatsApp