# Auger not working!!!

**URL:** https://forum.yarbo.com/t/auger-not-working/4515
**Category:** Support & Solutions
**Tags:** snowblower
**Created:** [December 1, 2025, 1:42am UTC](https://forum.yarbo.com/t/auger-not-working/4515 "2025-12-01T01:42:55Z")
**Posts on this page:** 1
**Showing post:** 25

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### Author: ![ken.w.gregory](https://yyz1.discourse-cdn.com/flex007/user_avatar/forum.yarbo.com/ken.w.gregory/32/922_2.png) [@ken.w.gregory](https://forum.yarbo.com/u/ken.w.gregory)
#### Post date: [December 3, 2025, 2:37pm UTC](https://forum.yarbo.com/t/auger-not-working/4515/25 "2025-12-03T14:37:22Z")

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Per Grok:  
**S5M-25-515** is a **timing belt** (synchronous belt) designation commonly used in industrial automation, robotics, CNC machines, 3D printers, and other precision power transmission applications.

Here’s the breakdown of the code:

| Part of Code | Meaning | Details for S5M-25-515 |
| --- | --- | --- |
| **S5M** | Pitch type and size | **S** = Super Torque (high-torque version of HTD) |
| **5M** = 5 mm pitch (distance between teeth) | | |
| **25** | Belt width in mm | 25 mm wide |
| **515** | Pitch length in mm | 515 mm total circumference (measured along the pitch line) |

### Key Specifications

- **Tooth profile** : Rounded (curvilinear) – similar to HTD but optimized for higher torque

- **Pitch** : 5 mm

- **Number of teeth** : 515 mm ÷ 5 mm = **103 teeth**

- **Width** : 25 mm

- **Common material** : Neoprene rubber with fiberglass tensile cords (sometimes steel cords for heavy duty)

- **Typical pulleys needed** : S5M pulleys with 103 teeth would make a closed loop, but usually used with smaller drive/driven pulleys

### Equivalent or Similar Belts

- HTD 5M belts (very close, sometimes interchangeable)

- Gates PowerGrip GT2 or GT3 5M (slightly different profile but similar performance)

- Some brands label it as 515S5M25 (e.g., Bando, Mitsuboshi, Optibelt, ContiTech)

### Common Applications

- CNC routers (especially larger ones)

- Industrial robots

- Heavy-duty linear actuators

- Large-format 3D printers

- Automation equipment requiring high torque and precise positioning

In short: The **S5M-25-515** is a 25 mm wide, 515 mm long, 5 mm pitch high-torque synchronous timing belt with 103 teeth.

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