We use our BlueROV2 once or twice a year for short-notice jobs. Every time we pull it out of storage, all of the horizontally oriented thrusters are seized up and require a lot of work to free them up. (The vertically oriented thrusters do not have this problem.) I’m confident that our thrusters ar…

Hi @StrikeLines - Any lubricants can negatively impact the health of the plastic sheave bearings, and the coatings on the motors themselves. That’s before considering that any lubricant you use is going to come blasting off completely when used, and into the ocean (or whatever body of water) - no …

[image] Tony White: Any lubricants can negatively impact the health of the plastic sheave bearings, and the coatings on the motors themselves. What type of plastic is used in the sheave bearings, and what type of coating is used on the motors? I’d like to look into the chemical compatibility.…

Hi @StrikeLines This information is on the T200 product page - I’ve copied it here for your reference: [image] The bearings themselves are oil-impregnated specialized plastic from Igus. I’m afraid that’s all the information available!

Before resorting to lubricant, here’s something you might want to try: After flushing the ROV, put it in a big tub of water and let it sit overnight. When it’s in the tub rock it around a bunch to make sure all the air is out of the thrusters. Basically, let any residual salt gradually leach out…

Thanks for the ideas. I’m sure what you describe may help. A two-day decommissioning procedure after every use is a lot… I feel like slightly larger clearances inside the motor would alleviate some of the propensity for these stators to freeze up from a little salt or sand. Kind of the AK-47 approa…

Hi @StrikeLines - Everything is always a tradeoff! A large factor in a brushless motors efficiency is how tight the gap between the rotor magnets and stator is… Blue Robotics R&D efforts to update the motor seek to match or exceed current efficiency, while making corrosion due to coating breakdown…

Perhaps this will help [image] T200 rotor stuck and rusted! Thrusters and Motors Hi @Jhans We have been using the T200 for years in salt water, with intensive use, almost daily, especially in high season since we are a tourist project. The first T200 that we…

Preventing thruster corrosion during storage

Blue Robotics Products Thrusters and Motors

Andres (Ocean Secrets) July 17, 2026, 6:55am 8

Perhaps this will help

Best regards

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Preventing thruster corrosion during storage

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Preventing thruster corrosion during storage

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