Poly-V belt Optibelt PK 1125
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Poly-V belts
- Series
- RB
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.
OPTIBELT and STARK: matching part numbers →GATES and OPTIBELT: 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 PK 1125 belongs to poly-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 PK 1125 and any equivalents.
The Optibelt RB PK 1125 is a Poly-V (multi-rib) belt with a PK profile and a length of 1125 mm. This page covers how to match it to the belt you are replacing so the drive goes back together correctly. We carry this belt for maintenance, engineering and purchasing teams across the US, Canada, Mexico and South America.
The simplest way to confirm this is the right belt is to read the marking on the back of the old belt. If it shows PK 1125, this Optibelt RB belt matches that profile and length. The same size is also listed under Stark PK 1125 and Gates PK 1125, so those markings can lead you to the same size. Do not rely on a visual match alone, because a belt that looks close can differ in profile or length.
Before ordering, inspect the drive: check the pulley grooves for wear, debris or damage, confirm the pulleys turn freely, and look at the tensioner and any idler pulleys. If the old belt failed early, note whether the ribs are cracked, glazed or worn unevenly. On a multi-rib drive, replacing belts as a set is common practice where more than one belt runs the same drive.
To request a quote, send the part number PK 1125, the quantity you need, and the marking from the old belt if it differs. If you are unsure of the profile or length, send a photo of the back of the belt and the drive layout. Our team replies promptly and can help confirm the right belt or suggest an equivalent.
Dimensions
- Profile
- PK
- Length
- 1125mm
Frequently asked questions
- How do I match this belt to the one I am replacing?
- Read the marking on the back of the old belt. This belt is PK profile with a length of 1125 mm. If your old belt is marked PK 1125, it matches this size.
- What should I check on the drive before installing a new belt?
- Inspect the pulley grooves for wear or debris, confirm the pulleys turn freely, and check the tensioner and idler pulleys. Also note any uneven rib wear on the old belt, as it can point to a drive issue.
- What information do you need to quote this belt?
- Send the part number PK 1125 and the quantity you need. If the old belt marking is different, include it or a photo of the back of the belt so we can help confirm the right belt or suggest an equivalent.