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SKU:
NLT1B00009
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Rayco Super Jr Stump Grinder Polychain Belt 750121
$146.99
In Stock
$146.99
Sale price
$146.99
Regular price
This new aftermarket polychain drive belt replaces Rayco 750121 for compatible RG 1625, RG 1631, and RG 1635 Super Jr stump grinders.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Rayco RG 1625 Super Jr stump grinder
- Rayco RG 1631 Super Jr stump grinder
- Rayco RG 1635 Super Jr stump grinder
Product Overview
Visible tooth damage, cracking, frayed edges, belt dust, slipping under cutter load, or a snapped drive belt can stop a grinder in the middle of a job. Pulley wear, misalignment, incorrect tension, contaminated guards, and failing bearings must be corrected with the belt.
The positive-drive belt transfers power through the matching Super Jr drive system without the slip of a conventional V-belt. Belt number and tooth profile matter; a belt with the same length but a different pitch is not an acceptable substitute.
Match 750121, width, tooth pitch and count, printed belt markings, pulley profile, grinder model, serial number, and whether the machine uses the relevant jackshaft or cutter-drive position.
Key Features & Performance
- Positive-drive polychain construction
- Correct reference for listed Rayco Super Jr applications
- Designed to mesh with the matching toothed pulleys
- Replacement for a worn, contaminated, or broken drive belt
Replaces Part Numbers
- 750121
Common Uses
- Getting a stump grinder back to work after a belt failure
- Replacing a belt that jumps teeth under load
- Preventive replacement when cracks or tooth wear are found
Technical Specifications
- Product Type: Stump-grinder polychain drive belt
- Primary Reference: 750121
- Equipment: Rayco RG 1625/1631/1635 Super Jr
- Condition: New aftermarket replacement
Installation & Fitment
- Shut down, remove the key, and isolate the battery
- Wait for all rotating parts to stop and remove guards
- Inspect pulley teeth, bearings, alignment, and tension components
- Set belt tension to the Rayco service specification
- Rotate by hand, reinstall every guard, and recheck tension after initial use
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Can I use a V-belt with the same length? A: No. This application requires the correct toothed polychain profile and width.
Q: Why did the old belt lose teeth? A: Overload, worn pulleys, poor tension, misalignment, contamination, or age may be responsible.
Q: Does 750121 fit every Rayco Super Jr? A: No. Verify the grinder model, serial number, belt position, and printed number.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: Rayco 750121 polychain belt, RG1625 Super Jr drive belt, Rayco 1631 stump grinder belt, RG1635 belt replacement, stump grinder belt lost teeth
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.