Description
Overview:
The Spring Washer M12 is a genuine Altrad/Belle component designed to secure pulley fixings on Belle Minimix mixers. Made from durable metal, it applies continuous tension to an M12 fastener so the joint stays tight under vibration. This helps prevent nuts or bolts from backing off in service, maintaining safe and reliable operation of the pulley assembly. Built to the correct size and profile for Belle hardware, it is an OEM-fit replacement identified by MPN 4/1301. Ideal for routine maintenance or repairs on compact site mixers such as the Minimix 150 and 350X Compact, it fits neatly under the fastener head or nut to maintain clamp force and protect surrounding components.
Key Features:
- Genuine Altrad/Belle part (MPN 4/1301) for assured fit and performance on Minimix pulleys
- M12 size to suit standard 12 mm mixer fasteners used on Belle assemblies
- Split spring design maintains preload and resists loosening under vibration
- Durable metal construction for long service life in harsh site conditions
- Direct replacement part; straightforward to fit with basic hand tools
- Helps keep pulley, shaft and fastener assemblies correctly clamped
- Compatible with Belle Minimix 150 and 350X Compact models
Typical Applications:
Used on Belle Minimix pulley fixings where vibration is high, such as drive and drum pulley assemblies. Suitable for mixer servicing, rebuilds, and preventative maintenance on building sites, in workshops, and for hire fleet upkeep. Helps maintain correct clamp load to reduce wear, misalignment, and downtime.
Also known as:
Split washer, split lock washer, helical spring washer, spring lock washer, retaining washer, snap washer. These terms refer to the same style of washer that provides a locking action by spring tension to support joint security in vibrating machinery.
Fits Models:
350X Compact, 350XCompact, Minimix 150, Minimix150
Alternate Part Numbers:
4/1214, 41301, 41214
Product Specifications
| L&S Part No. | 4/1301 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Altrad/Belle |
| OEM No. | 4/1301 |
| Unit of Sale | 1 |
| Size | M12 |
| Applications | 350X Compact, 350XCompact, Minimix 150, Minimix150 |
| Machine Type | Mixers |
| Fits Brands | Belle |
| Fits Models | Minimix 150 |
