---
product_id: 47445981
title: "Jeremywell #40 Roller Chain Idler Sprocket 1/2\" Bore Hardened 17 Tooth"
brand: "jeremywell"
price: "$52.39"
currency: USD
in_stock: true
reviews_count: 8
url: https://www.desertcart.us/products/47445981-jeremywell-40-roller-chain-idler-sprocket-1-2-bore-hardened
store_origin: US
region: United States of America
---

# 1/2" Bore Hardened HRC40-50 2.126" Hub Dia Jeremywell #40 Roller Chain Idler Sprocket 1/2" Bore Hardened 17 Tooth

**Brand:** jeremywell
**Price:** $52.39
**Availability:** ✅ In Stock

## Summary

> 🔧 Gear Up for Greatness!

## Quick Answers

- **What is this?** Jeremywell #40 Roller Chain Idler Sprocket 1/2" Bore Hardened 17 Tooth by jeremywell
- **How much does it cost?** $52.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/47445981-jeremywell-40-roller-chain-idler-sprocket-1-2-bore-hardened)

## Best For

- jeremywell enthusiasts

## Why This Product

- Trusted jeremywell brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Design:** Hardened teeth rated at HRC40-50 ensure longevity and reliability.
- • **Robust Material:** Constructed from AISI 1045 medium carbon steel for superior strength.
- • **Quality Assurance:** Brand new with a satisfaction guarantee for peace of mind.
- • **Precision Engineering:** Crafted with a 2.126" hub diameter for optimal performance.
- • **Versatile Compatibility:** B Type sprocket with 17 teeth fits a variety of applications.

## Overview

The Jeremywell #40 Roller Chain Idler Sprocket features a 1/2" bore and 17 teeth, designed for durability and precision. Made from AISI 1045 medium carbon steel and hardened to HRC40-50, this sprocket is perfect for various applications, ensuring long-lasting performance and reliability.

## Description

Full description not available

## Features

- Hub Dia:2.126"
- Harden Teeth at HRC40-50
- B Type, 17 Teeth, 1/2" Bore
- Brand New Satisfaction Guaranteed
- Material: AISI 1045 Medium Carbon Steel

## Images

![Jeremywell #40 Roller Chain Idler Sprocket 1/2" Bore Hardened 17 Tooth - Image 1](https://m.media-amazon.com/images/I/61VJhiLTMbL.jpg)
![Jeremywell #40 Roller Chain Idler Sprocket 1/2" Bore Hardened 17 Tooth - Image 2](https://m.media-amazon.com/images/I/61dgezGSwmL.jpg)
![Jeremywell #40 Roller Chain Idler Sprocket 1/2" Bore Hardened 17 Tooth - Image 3](https://m.media-amazon.com/images/I/61nKANxMSqL.jpg)
![Jeremywell #40 Roller Chain Idler Sprocket 1/2" Bore Hardened 17 Tooth - Image 4](https://m.media-amazon.com/images/I/41HvyiG4ECL.jpg)
![Jeremywell #40 Roller Chain Idler Sprocket 1/2" Bore Hardened 17 Tooth - Image 5](https://m.media-amazon.com/images/I/41+B0Ic1NsL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: want about a 415 chain**
A: what is the question?????

**Q: Does it fit 41 chain**
A: Yes, 40 or 41.

**Q: I don’t understand these chain sizes describe them to other sizes**
A: As expamples: a #50 chain has a 5/8" link length from center of river to center of rivet. A #40 is 4/8" center to center and so on. The # comes from the number of 1/8's the chain links are. You can measure your existing chain in 8ths of an inch and thats your size. Then, you need to figure out how many teeth are on the sprocket you need. Such as "17h." The last number is the size of the hole in the bearing for its axle. IE: 1/2" bore or 5/8" bore.

**Q: what is out side diameter and are there set screws to fasten it to shaft**
A: The outside is 3 1/2" and there are no set screws.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by C***F on June 22, 2025*

Quick and a quality part

### ⭐⭐⭐⭐⭐ Worth the money it cost
*by S***E on May 25, 2025*

Works well to assist in rolling up solar cover on pool. Would buy it again

### ⭐⭐⭐⭐⭐ Write one
*by T***K on September 3, 2025*

Exactly the one I need for my go part it's perfect

## Frequently Bought Together

- Jeremywell #40 Roller Chain Idler Sprocket 1/2" Bore Hardened 17 Tooth
- PGN #40 Roller Chain - 10 Feet + 2 Free Connecting Links - Carbon Steel Chains for Bycicles, Mini Bikes, Motorcycles, Go-Karts, Home and Industrial Machinery - 239 Links
- RHKING #40 Roller Chain Sprocket B Type 1" Bore Rust Prevention Hardened 15 Tooth

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-26*