Thread: Greasing Hiwin HG15
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07-03-2014 #1
I've had a search about but nothing much to find, here's the problem;
Hiwin HG15 bearings come with a poxy little domed grease nipple, they have a M4 x 0.7 thread, I have a grease gun and grease but what fitting do I need to get grease into them ?Spelling mistakes are not intentional, I only seem to see them some time after I've posted
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07-03-2014 #2
Not sure what fitting they're meant to take, but in the recent build I just made my own adapters to fit in the thread (M6x1 in my case) and routed tubes to each bearing (and ballnut) so oil can be injected into them. Arguably a bit OTT... it depends how far you want to take it and how easy access would be to the existing fittings.
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08-03-2014 #3
I've decided to use grease but that's what I'm thinking, make some adapters. Quite a lot of the large motors I've worked on had extension tubes for the grease nipples because they would have been inaccessible otherwise. It's a daft design on their part I think, if only they were 6mm instead of 4mm. I'm thinking about a right angle adapter made of brass with a 4mm male thread and a 6mm female to take a standard nipple.
Spelling mistakes are not intentional, I only seem to see them some time after I've posted
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08-03-2014 #4
But I didn't want to say that, I want to know what other people do with regard to greasing these and how ?
Spelling mistakes are not intentional, I only seem to see them some time after I've posted
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08-03-2014 #5
used 4mm nylon elbows which were a push fit into the carriage
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08-03-2014 #6
Looks tidy and good access to nipples, got a source for these elbows ? I can only seem to find pipe thread fittings.
Spelling mistakes are not intentional, I only seem to see them some time after I've posted
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08-03-2014 #7
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08-03-2014 #8
Ah I see it just pushes in at both ends. With it being captive in the aluminium plate it can't go anywhere so as long as there's a good seal at both ends it should be fine. thanks.
Spelling mistakes are not intentional, I only seem to see them some time after I've posted
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09-03-2014 #9
I spent an hour or two last week looking for some alternative fittings.
My Hiwin catalog lists a 90° oil fitting, but I have no idea where to get them from.
These might be able to be modified into something workable.
Dirtbike Fork Relief Valve Motorcross Fork Bleed Valve Air M4 0 7mm Stainless | eBay
My machine has two Z axis, so I have 8 blocks to grease.
I also found these.
https://www.hobbyking.com/hobbyking/...ting_2pcs.html
Synapse Synchronic Wastegate Barbed Brass Port Fittings - M4 x 4mm HoseGerry
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09-03-2014 #10
Will this do the job ?
Grease Gun Push On Connector | Grease Gun Accessories | Oils & Lubrication | Online Bearings
or this one
http://www.ebay.co.uk/itm/GREASE-OIL...item3f31515988
designed to fit these which are larger but similar to Hiwin nipples
http://www.stotfoldengineers.co.uk/s...nipple-design/Last edited by EddyCurrent; 09-03-2014 at 11:53 PM.
Spelling mistakes are not intentional, I only seem to see them some time after I've posted
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