# E12B21 SPK ROLLER TRIPLE B MET

**Manufacturer:** Martin Sprocket  
**MPN:** `E12B21`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Martin Sprocket |
| Manufacturer name | Martin Sprocket |
| Manufacturer | Martin Sprocket |
| CategoryL1 | Chains & Sprockets |
| CategoryL2 | Sprockets |
| CategoryL3 | Roller Chain Sprockets |
| CategoryL4 | Multi-Strand Sprockets |
| DimensionUnit | mm |
| Extra Product Name | E12B21 SPK ROLLER TRIPLE B MET |
| diameter | 127.816 |
| length | 127.816 |
| length_Attrib | Pitch Diameter |
| moq | 1 |
| MPN | E12B21 |
| multiple | 1 |
| qtyInStock | 0 |
| SKU | 257046 |
| snippet | E12B21 SPK ROLLER TRIPLE B MET |
| tierMinQty1 | 1 |
| tierPrice1 | 293.74 |
| width | 127.816 |
| width_Attrib | Pitch Diameter |
| Number Of Teeth | 21 |
| Material | Steel |
| Outside Dia | 139.564 mm |
| Pitch Diameter | 127.816 mm |
| Pitch | 19.050 mm |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| MRO Supply | 257046 | 293.74 | 1 | None | 1 |
| motionindustries.com | 00205013 | 219.51 | 1 | None | 1 |
| Applied Industrial | 100966832 |  |  | None | 1 |
| Purvis | E12B21 | 326.12 | 1 | None | 1 |
| Radwell | E12B21 |  |  | None | 1 |
| turtle.com | MOI E12B21 |  |  | None | 1 |
| cbtcompany.com | E12B21 |  |  | None | 1 |
| apexindustrialautomation.com | E12B21 | 185.83 | 1 | 2 | 1 |
| industrialzone.com | E12B21 | 161.73 | 1 | None | 2 |

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Structured data: `/python/html6/product/500/265000000/265377500/part_--E12B21---MartinSprocket--7c9024a192.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp