Description
Overview:
This Genuine Woodruff Key for Atlas Copco breakers is a small, half-moon steel key that locates a flywheel, clutch hub, or other rotating component on a tapered shaft. Made from hardened steel for strength and wear resistance, it prevents slippage and keeps timing and alignment correct under vibration. Designed for Atlas Copco Cobra TT and Cobra Mk1 machines, it matches OEM geometry and tolerances for a secure seat in the keyway. Genuine Atlas Copco part number 9232 2228 40 helps with accurate identification and straightforward replacement during service. A sound key helps protect shafts and hubs from fretting damage, keeps the machine starting and running reliably, and reduces unplanned downtime on site for tradespeople and DIY users who need dependable breaker performance.
Key Features:
- Genuine Atlas Copco part for assured compatibility and performance
- OEM No. 9232 2228 40 for easy identification; alternate ref 9232222840
- Precisely machined half-moon profile for positive drive in tapered shafts
- Hardened steel construction resists wear, peening, and shear under load
- Helps prevent slippage, timing drift, and pulley/flywheel wobble
- Maintains alignment of rotating components for smooth operation
- Straightforward like-for-like replacement; no special tools typically required
- Compact part that can be fitted during routine servicing to minimise downtime
- Suitable for Cobra TT and compatible Cobra Mk1/PROi/Pro models
- Durable, corrosion-resistant finish for long service life in harsh site conditions
Typical Applications:
Used when installing or re-setting a flywheel, clutch, or rotor on Atlas Copco petrol breakers. Ideal during crankshaft, bearing, or seal replacements, or after a shear event to restore correct timing. Helps address fretting marks or play on hubs and ensures dependable operation in roadworks, utilities, fencing, demolition, and landscaping tasks.
Also known as:
Woodruff key, half-moon key, machine key, shaft key, keyway key, drive key, semicircular key.
Fits Models:
Cobra TT, Cobra Mk1, Cobra PROi, Cobra Pro
Alternate Part Numbers:
9232222840
Product Specifications
| L&S Part No. | 9232 2228 40 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Atlas Copco |
| OEM No. | 9232222840 |
| Unit of Sale | 1 |
| Applications | Cobra Mk1, Cobra PROi, Cobra Pro, Cobra TT, CobraMk1, CobraPROi, CobraPro, CobraTT |
| Machine Type | Breakers |
| Fits Brands | Atlas Copco |
| Fits Models | Cobra TT | Cobra PROi | Cobra Pro | Cobra PROe |
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