---
product_id: 44437046
title: "AndyMark SpinBox High-Speed Robot Overdrive Gearbox"
brand: "andymark"
price: "$205.59"
currency: USD
in_stock: false
url: https://www.desertcart.us/products/44437046-andymark-spinbox-high-speed-robot-overdrive-gearbox
store_origin: US
region: United States of America
---

# 1:1.21 overdrive ratio Sturdy aluminum housing 1.87 lbs lightweight design AndyMark SpinBox High-Speed Robot Overdrive Gearbox

**Brand:** andymark
**Price:** $205.59
**Availability:** ❌ Out of Stock

## Summary

> ⚡️ Gear up for speed and durability — don’t let your bot lag behind!

## Quick Answers

- **What is this?** AndyMark SpinBox High-Speed Robot Overdrive Gearbox by andymark
- **How much does it cost?** $205.59 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/44437046-andymark-spinbox-high-speed-robot-overdrive-gearbox)

## Best For

- andymark enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Rugged aluminum housing paired with a 4140 steel output shaft ensures durability under pressure.
- • **Seamless Integration:** Designed for CIM motors or AM Planetary Gearboxes, making upgrades effortless.
- • **Customizable Assembly:** Ships ready for assembly with multiple shaft plates for versatile motor mounting options.
- • **Speed Meets Precision:** Boost your robot’s velocity with a 1:1.21 overdrive ratio for that competitive edge.
- • **Lightweight Powerhouse:** At just 1.87 pounds, it delivers high performance without weighing down your build.

## Overview

The AndyMark SpinBox High-Speed Robot Overdrive Gearbox is a compact, lightweight (1.87 lbs) gearbox featuring a 1:1.21 speed-increasing overdrive ratio. Constructed with a sturdy aluminum housing and a 4140 steel output shaft, it offers robust durability. Designed for easy assembly with included shaft plates, it supports CIM motors or AM Planetary Gearboxes, making it a versatile upgrade for competitive robotics.

## Description

This compact gearbox is designed to provide one reduction from the input motor. The output shaft is well secured, and has a 1/2" output diameter. This gearbox comes standard with an overdrive gear set, with a 35 tooth CIM gear and 29 tooth output gear, providing a 1:1.21 speed-increasing (overdrive) ratio. This gearbox is shipped un-assembled. Two different shaft plates are included in this kit, allowing the user to mount it various ways. These two different shaft plates can be seen in the product pictures above. Motor input can include one CIM motor, or one AM Planetary Gearbox. Weight: 1.87 pounds Hardware (all unassembled): One - Housing Two - Shaft plates, one small, one large with flange mounting holes One - 35 tooth CIM gear (8mm bore with 2mm keyway) One - 29 tooth output gear (1/2" hex bore) One - 4140 steel output shaft, 1/2" dia. with 1/8" keyway One - FR8ZZ, 1/2" bore bearing One- Nylon spacer, 185x385 One - 2mm x 2mm machine key One - 1/8x1/8x0.7 machine key Two - #10-32 x 5/8 screws, for motor mounting Four - #10-32 x 3/4 screws One - 1/4-20 x 1/2 screw One - 1/4 washer Items NOT Included: CIM Motor Encoder or other feedback sensors. Motor Input: Designed for one CIM motor or AM Planetary Gearbox Gearing and Speed: This gearbox is set up to be an overdrive gearbox, with using standard parts. 1:1.21 overall ratio (speed increasing) 35 tooth CIM gear (4140 steel, 8mm bore with 2mm keyway) 29 tooth output gear (4140 steel, 1/2" hex bore) Optional Gears (purchased separately): 1: 1.67 optional ratio (speed increasing), with 40 tooth CIM gear (4140 steel, 8mm bore with 2mm keyway) and 24 tooth output gear (4140 steel, 1/2" hex bore)

## Features

- 1:1.21 Overdrive ratio
- 1.187 pounds without motor
- Sturdy aluminum housing with steel output shaft
- Ships ready for assembly with your motor

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00DQEX5TK |
| Date First Available | July 1, 2013 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2 pounds |
| Item model number | am-2462 |
| Manufacturer | AndyMark |

## Images

![AndyMark SpinBox High-Speed Robot Overdrive Gearbox - Image 1](https://m.media-amazon.com/images/I/21olTLydpuL.jpg)

---

## 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.us/products/44437046-andymark-spinbox-high-speed-robot-overdrive-gearbox](https://www.desertcart.us/products/44437046-andymark-spinbox-high-speed-robot-overdrive-gearbox)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-21*