
V-belt Optibelt 3VX 300 KB
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- V-belts
- Section
- 3VX
- Series
- KBX
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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.
Description
OPTIBELT 3VX 300 KB belongs to v-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 3VX 300 KB and any equivalents.
The Optibelt 3VX 300 KB is a banded V-belt in the KBX series with a 762 mm length. It is designed for drives that require multiple V-belts to work as a single unit, reducing vibration and preventing belt whip. To match it, compare the profile and length marked on your existing belt.
Start by reading the marking on the back of the belt you are replacing. You are looking for the profile (3VX) and the length (762 mm). The 3VX profile is a narrow wedge cross-section, and the KB designation indicates a banded construction. If the old belt is worn or the marking is illegible, measure the top width and the outside length to confirm.
Banded V-belts are used where a single belt would slip or turn over under shock loads. Because the belts are joined by a top band, they must be replaced as a complete set. Mixing new and old belts on the same drive can cause uneven tension and premature failure. Always replace all belts in the set at the same time.
If you are unsure whether the 3VX 300 KB is the correct replacement, send us the part number from your old belt or the drive specifications. Our team can confirm the profile and length and help you identify the right belt for your application. We carry Optibelt belts and can quote by part number.
Dimensions
- Length
- 762mm
Frequently asked questions
- How do I confirm the Optibelt 3VX 300 KB is the right belt for my drive?
- Check the marking on your existing belt. It should show the profile (3VX) and the length (762 mm). If the marking is not clear, measure the top width and outside length, or send us the old part number and drive details for confirmation.
- Can I replace just one belt in a banded set?
- No. Banded V-belts are designed to operate as a set. Replacing only one belt can lead to uneven tension and early failure of the other belts. Always replace the complete set.
- What information do I need to request a quote?
- Provide the part number (3VX 300 KB) and the quantity you need. If you are unsure about the part number, send a photo of the marking on your old belt or the drive specifications, and we will help you identify the correct belt.

