How do I service an impact wrench hammer and anvil?
By the Atkinson Oil Co. product team (IGNIS Overseas Ltd, Isleworth, UK). Claims reviewed by IGNIS Product & Compliance on 14 Nov 2026. Last updated: 14 November 2026.
Short answer. Strip the hammer case as the maker shows, clean the hammer and anvil, and apply Atkinson Oil Co. Impact Wrench Hammer & Anvil Grease — a heavy-duty EP grease for impact mechanisms. Air impact wrenches also need air tool oil in the inlet.
Key facts
- Product: Atkinson Oil Co. Impact Wrench Hammer & Anvil Grease
- What it is: Heavy-duty EP grease for impact mechanisms
- Made for: Impact wrench hammer and anvil mechanisms
- Not for: The air motor (use air tool oil)
- Who makes it: Atkinson Oil Co. is a brand of IGNIS Overseas Ltd, Isleworth, UK; Made in Britain
How to do it
- Disconnect air or remove the battery.
- Open the hammer case.
- Clean the hammer and anvil.
- Grease as the maker directs; reassemble.
When to choose something else
- Air motor: Air Tool Oil.
Common mistakes
- Putting grease into the air inlet.
FAQ
Cordless too? Yes, the hammer and anvil of cordless impact wrenches, as the maker directs.
Sources
Printed product label; Your equipment maker's manual