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G-Levine / OpenTorque-Actuator

OpenTorque Actuator: A powerful, compliant actuator for legged robotics.
https://hackaday.io/project/159404-opentorque-actuator
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Cheaper Bearing? #4

Closed IpsumDominum closed 3 years ago

IpsumDominum commented 4 years ago

Hey :) I am a very beginner, It seems like the https://www.alibaba.com/product-detail/RA8008-crossed-roller-bearing-THK-bearing_1912942608.html bearing from alibaba is quite high priced.. What would be an alternative?

Thanks! C Lu

rohanbaba commented 4 years ago

Try searching for 61816-ZZ and you will find it in your local stores online. (eg. https://www.bearingrevolution.co.uk/61816-zz-60330) This is a relatively very common type of bearing as well as very cheap with similar dimensions. To use this bearing in the assembly, you will need to slightly tweak some dimensions of its housing.

STGRobotics commented 3 years ago

https://www.amazon.com/Ochoos-80x100x10mm-Precision-Groove-Bearings/dp/B07R5Q6BBB/ref=sr_1_1?dchild=1&keywords=61816+ZZ&qid=1614945251&sr=8-1

https://www.astbearings.com/catalog/thin_section_metric?filter=a01_bore_dia_mm%3A2%3A80.0%3Ba02_outer_dia_mm%3A2%3A100.0#cds-attribute-a02_outer_dia_mm

IpsumDominum commented 3 years ago

Thanks very much!