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Newton Gripper stopped working, motor still runs but nothing happens

(Robert) #1

My gripper stopped working on the first test… As i started it open and closed fine above water and on the first test, but after a while it was stuck an would’t really do anything. Then i took it up wiggled a bit with the claw and then i worked again for a couple of times, but then it stopped working completely. So now i can only hear the gripper motor run but nothing happends?
See demo of the problem here

(Robert) #2

Okay, so after taking it a bit apart i can see that the trapezoid thread piece not longer is attatched to the motor due to the set screw has losend itself. See picture for reference:

Now the only complication is that i cant get the bottom piece loose so i can fasten the threaded piece agian. So any advice on that? @patrickelectric

(Rusty) #3

Hi Robert,

I’m sorry you’ve had trouble with the gripper! It does look like that set screw came loose. We have an updated shaft coupling that prevents that from happening. If you don’t mind, can you please email support@bluerobotics.com and we’ll get this resolved right away?


(Robert) #4

An email is hereby sent, thanks!


I also managed to break mine today, but it was the plastic piece attached to the lead screw. I have been doing a lot of digging with it while trying to recover objects, which I’m sure its not designed to do. While diagnosing the issue underwater, the jaws wouldn’t open or close. Back on the surface, the motor would turn freely and the jaws were able to be easily opened or closed by hand, it was obvious that they were no longer attached to the motor inside.
I will email support to buy a replacement part if I can field service it myself. Otherwise I will send it in for a refurb and maybe buy a spare gripper.
Mike @ Alaska Submarine

(Jacob) #6

Thanks for bringing this to our attention guys. Please do contact support@bluerobotics.com for a replacement part. We have revised this part so it won’t break any more.

(Kaos) #7

If the part has been revised to prevent breakage, then what is your policy on the grippers out there with the original part? I’m not keen on waiting for it to break on a job which could cost me a client or job.

(Adam) #8

Hi @kaosrulz,

In general our policy to to replace as necessary. Please contact us at support@bluerobotics.com if you are concerned.


(Karstein ) #9

I also had this problem. resolved It bye file a small groove in the shaft. That the set screw could screw down into. It was promised that the plastic part should be replaced or possibly upgraded. have not received anything yet.

(Kevin) #10

@Turoey We had a support e-mail going from July 25, can you please reply to that with your most current shipping address and we will send you the replacement parts.


UPDATE: We received replacement parts in less than a week to Alaska, installed them and fixed the issue. They appear more skookum than the original. Thanks!