
V-belt Optibelt SPA 4000
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- V-belts
- Section
- SPA
- Series
- SK metric profile V-belts
We reply promptly.
Tell us the quantity you need and request a quote by WhatsApp or email.
Other brands for this category
Ask us for alternatives. We check every equivalent against the part number and your application.
GATES and OPTIBELT: matching part numbers →OPTIBELT and STARK: matching part numbers →
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 SPA 4000 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 SPA 4000 and any equivalents.
This Optibelt SPA 4000 belt is a narrow wedge V-belt in the SPA profile, with a 4000 mm length. The profile and length are the two details a buyer needs to match a drive before requesting a quote.
The SPA profile sets the belt's cross-section for the pulley groove: 12.7 mm top width, 10 mm height and a 40 degree angle. The 4000 mm length is the datum you compare against the belt you are replacing. Both values are stated on the belt and in the drive documentation, so confirm them before ordering.
This belt is part of the Optibelt SK metric profile V-belt series. The same size is also listed under Stark as SPA 4000, which gives you a second reference when checking a replacement.
If you are sourcing for a metric drive, send the part number SPA 4000 and the length and profile from the old belt. We carry Optibelt and can help confirm the right belt or suggest an equivalent.
Dimensions
- Section
- SPA
- Length
- 4000mm
Frequently asked questions
- What do the SPA profile and 4000 mm length mean for fit?
- SPA is the profile, with a 12.7 mm top width, 10 mm height and 40 degree angle. The 4000 mm length is the belt's datum length. Both must match the drive's pulley groove and center distance.
- How do I confirm this is the belt I need?
- Read the marking on the back of the old belt. If it shows SPA 4000, this is the same size. You can also measure the length and check the profile against the pulley groove.
- What should I send to request a quote?
- Send the part number SPA 4000, the brand Optibelt, and the profile and length from the old belt. If you have the old belt, include a photo of the back marking. We reply by WhatsApp or email.

