Yes, we can apply coatings to custom gears. Coatings are used to reduce friction, prevent rust, or make the gear last longer in tough conditions. Common coatings include black oxide, phosphate, nickel plating, and DLC (diamond-like carbon). Each one has different benefits. Black oxide is cheap and offers mild corrosion protection. Phosphate holds oil well and helps with break-in. Nickel plating resists rust and wear. DLC is expensive but very hard and slippery.
The time it takes depends on the coating type and the quantity of gears. Simple coatings like black oxide or phosphate usually take just a few days. Nickel plating takes a little longer, maybe a week. DLC and other specialized coatings can take two weeks or more because they require special equipment and careful handling.
We do not do coatings in-house. We send the gears to trusted coating partners. So the lead time includes shipping and scheduling at their facility. We will tell you the coating time when we give you the quote.
If you are not sure what coating is right for your gears, just tell us what the gear is used for and we will recommend something.