Couplers

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25 Jan 2016 14:38 #69088 by jeffie-3
Couplers was created by jeffie-3
Flex couplers vs Solid couples. I have two cnc machines. 1 uses flex couples and one has solid couplers. So I am wondering. Is solid better than flex?

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25 Jan 2016 14:49 #69090 by BigJohnT
Replied by BigJohnT on topic Couplers
Each type of coupler has a different application. You never use solid couplers when the motor and shaft are solidly mounted.

JT
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25 Jan 2016 15:34 - 25 Jan 2016 15:35 #69091 by jeffie-3
Replied by jeffie-3 on topic Couplers
Interesting. I have a Kitamura Mycenter. It has solid mounted everything.

Thank you for the info.
Last edit: 25 Jan 2016 15:35 by jeffie-3.

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25 Jan 2016 15:47 #69093 by BigJohnT
Replied by BigJohnT on topic Couplers
If you have only one bearing on the shaft for example you need a solid coupling. If the two shafts are not perfectly aligned in all axes and and both shafts have two bearings each then the bearings take on extra load and usually fail much sooner. Your machine may be perfectly aligned... or one shaft only has one bearing.

JT

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25 Jan 2016 16:12 #69094 by fc60
Replied by fc60 on topic Couplers
Greetings,

The early Smithy CNC machines had solid couplers. Due to poor alignment issues, they chewed up bearings. Later models, mine included, have the flexible "Lovejoy" style couplings.

However, my Rotary Axis turntable has a "flexure" coupling. I suspect it was used due to space constraints.

Cheers,

Dave

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