Re: Gearbox bearing replacement
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How to??
How do I remove the gears (well worn gears)??
Ralph
On Thu, Apr 19, 2018 at 9:58 AM, gerry waclawiak gerrywac@... [4x6bandsaw] <4x6bandsaw@...> wrote:
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Hi and welcome to the group?
I'm rather surprised that you have had ?to replace bearings as they generally last well
A far more common problem with these is that the soft brass gear wears our very quickly and leaves you with a gearbox full of what appears like gold paint. The problem is due to the poor finish of the steel worm gear with sharp edges and burrs which turn
it into a quite effective cutting tool which quickly years the brass gear to shreds
Many people have also questioned the quality of the Chinese gearbox oil
Mine suffered from this and during ?replacement I followed the recommendations to hand work the steel worm to remove burrs and slightly round ?the edges and then to fill the box with a quality gear oil
I must admit I didn't really think about the position of the bearings and just pressed them flush to the housing.
The saw has run much quieter since and has lasted far longer than the first with the factory gear.
Gerry W?
Leeds UK?
Sent from my Samsung Galaxy smartphone.
-------- Original message --------
Date: 19/04/2018 10:52 (GMT+00:00)
Subject: [4x6bandsaw] Gearbox bearing replacement
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Thank you for allowing me to join this group! ? This is my first post. ?
I own a Clark Metalworker 4x6 and have used it in my hobbies for many years.? The bearings in the gearbox have finally worn out and I¡¯ve removed both shafts and pressed the old bearings off, and have acquired new bearings and seals from McMaster. I¡¯ve
now pressed the new bearings; spacers and seals onto the shafts and am ready to press the assemblies back into the housing. ?
My question is what is the best procedure for pressing these assemblies into the housing while obtaining the correct spacing between the gears?? I¡¯m accustomed to pressing bearing races into a bore up against to shoulder that would ultimately determine
the final positioning of the assembled unit.? I regret not obtaining a micrometer measurement of the shaft positions in relation to the casting prior to disassembly. ??
Perhaps I¡¯m over thinking this?? Any advice would be appreciated. ?
Thank you. ?
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