---
product_id: 544409071
title: "#40 Roller Chain Sprocket B Type 3/4\" Bore Rust Prevention Hardened 10 Tooth"
brand: "rhking"
price: "495 DH"
currency: MAD
in_stock: true
reviews_count: 8
category: "Rhking"
url: https://www.desertcart.ma/products/544409071-40-roller-chain-sprocket-b-type-3-4-bore-rust
store_origin: MA
region: Morocco
---

# 3/4" bore with dual setscrews for secure fit 10 hardened teeth for precision power transfer Rust & corrosion resistant blackened finish #40 Roller Chain Sprocket B Type 3/4" Bore Rust Prevention Hardened 10 Tooth

**Brand:** rhking
**Price:** 495 DH
**Availability:** ✅ In Stock

## Summary

> ⚙️ Hardened, rust-proof, and locked tight — the sprocket your project deserves!

## Quick Answers

- **What is this?** #40 Roller Chain Sprocket B Type 3/4" Bore Rust Prevention Hardened 10 Tooth by rhking
- **How much does it cost?** 495 DH with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/544409071-40-roller-chain-sprocket-b-type-3-4-bore-rust)

## Best For

- rhking enthusiasts

## Why This Product

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

## Key Features

- • **Precision Engineered Teeth:** Hardened to HRC38-42 for superior wear resistance and long-lasting performance.
- • **Maintenance-Free Durability:** No lubrication needed, designed for stable, reliable operation in demanding industrial or DIY projects.
- • **Secure Dual Setscrew Design:** Two 90° setscrews lock the sprocket firmly in place, eliminating slippage and downtime.
- • **Rust-Resistant Blackened Finish:** Advanced surface treatment ensures corrosion protection and maintenance-free operation.
- • **Optimized Fit for #40 Roller Chains:** Perfect 12.7mm pitch and 3/4" bore diameter for seamless integration with your drivetrain.

## Overview

The RHKING #40 Roller Chain Sprocket features 10 hardened teeth made from AISI 1045 medium carbon steel with heat-treated surfaces for exceptional wear resistance. Its blackened finish provides rust and corrosion protection, while the 3/4" bore with dual setscrews ensures a secure, maintenance-free fit. Ideal for industrial and DIY applications requiring reliable, long-lasting drivetrain performance.

## Description

RHKING #40 Roller Chain Sprocket B Type 3/4" Bore Rust Prevention Hardened 10 Tooth: desertcart.com: Industrial & Scientific

Review: Exactly what we needed. - The sprocket worked great for the electric can crusher my husband is making. It was fast shipping and great packaging.
Review: Good replacement sprocket - The sprocket that came with my motor kit unscrewed itself and fell off. This is a perfect replacement. It fit the shaft perfectly with the included woodruff key and attached to the shaft properly with the included hex nut. I would recommend using a thread lock compound on the motor shaft to keep the nut in place. This is a 9 tooth sprocket, and I used it to replace an 11 tooth sprocket. This necessitated resizing the chain, but it resulted in more low end power delivered to the rear wheel through the existing #415 chain.

## Features

- ✅Size :Roller Chain Sprocket 12.7mm (1/2") Pitch,10 Teeth,3/4" Bore Diameter, 0.187" Keyway with 2 Setscrews at 90 degrees,B Type.
- ✅Material:Sprocket is made of AISI 1045 Medium Carbon Steel, gear part of high temperature quenching heat treatment, high hardness, Harden Teeth at HRC38-42,wear resistance.
- ✅Feature:Sprocket tooth surface hardening treatment, sprocket overall blackening treatment, rust, corrosion resistance.
- ✅Use: Sprocket does not need lubrication, easy maintenance, can maintain good stable operation for a long time.
- ✅Package Content :1 x Roller Chain Sprocket (included 2pcs set screw).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BV16KS32 |
| Best Sellers Rank | #10,032 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Mechanical Roller Chain Sprockets |
| Date First Available | February 6, 2023 |
| Item Weight | 4.2 ounces |
| Item model number | RHKING |
| Manufacturer | RHKING |
| Package Dimensions | 3.66 x 3.58 x 1.14 inches |

## Images

![#40 Roller Chain Sprocket B Type 3/4" Bore Rust Prevention Hardened 10 Tooth - Image 1](https://m.media-amazon.com/images/I/41YwFCoytkL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exactly what we needed.
*by L***K on November 12, 2025*

The sprocket worked great for the electric can crusher my husband is making. It was fast shipping and great packaging.

### ⭐⭐⭐⭐⭐ Good replacement sprocket
*by R***L on December 7, 2025*

The sprocket that came with my motor kit unscrewed itself and fell off. This is a perfect replacement. It fit the shaft perfectly with the included woodruff key and attached to the shaft properly with the included hex nut. I would recommend using a thread lock compound on the motor shaft to keep the nut in place. This is a 9 tooth sprocket, and I used it to replace an 11 tooth sprocket. This necessitated resizing the chain, but it resulted in more low end power delivered to the rear wheel through the existing #415 chain.

### ⭐⭐⭐⭐⭐ Roller sprocket
*by G***Y on December 26, 2025*

Just what we needed

## Frequently Bought Together

- RHKING #40 Roller Chain Sprocket B Type 3/4" Bore Rust Prevention Hardened 10 Tooth
- Jeremywell #40 Roller Chain Idler Sprocket 1/2" Bore Hardened 17 Tooth

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ma/products/544409071-40-roller-chain-sprocket-b-type-3-4-bore-rust](https://www.desertcart.ma/products/544409071-40-roller-chain-sprocket-b-type-3-4-bore-rust)

---

*Product available on Desertcart Morocco*
*Store origin: MA*
*Last updated: 2026-03-01*