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Bearing Oil
What's a good bearing oil for a phosphor bronze (I think)
bearing in a small computer fan? Would a tiny bit of car engine oil do? -- Andrew Gabriel |
Bearing Oil
Andrew Gabriel wrote: What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? Aren't these mostly 'sealed for life' ? If you can get access to the bearing then use something light. Say sewing machine oil or 3-in-1. Cheers, Paul. |
Bearing Oil
In message , Andrew Gabriel
writes What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? Well, the best stuff's called Anderol and it's expensive and minimum of order of 5 litres .... so forget that I've just re-oiled the pb bearings in the fans in a SATA cradle using the RS equivalent of 3 in 1 oil - it's what I had to hand. For computer fans you prolly want an oil with not too much drag, try 3 in 1 -- geoff |
Bearing Oil
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Bearing Oil
"Andrew Gabriel" wrote in message .. . What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? Bronze bearings are usually intended to be self-lubricating. Oiling them runs the risk of oil + dust creating an abrasive mix that will quickly wear the bearing away. Powdered graphite is the best lubricant. However, if you must oil it, use sewing machine oil. Colin Bignell |
Bearing Oil
In article ,
raden writes: In message .com, writes Andrew Gabriel wrote: What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? Aren't these mostly 'sealed for life' ? They pop out quite easily if you're careful about it Yes, having fitted a new one, I thought "nothing to lose", and just pulled on the fan. The whole bearing came out, and it looks like it was designed to. It seems to have been oiled originally, but the oil has gone thick, maybe due to muck getting in (wasn't very well dust proofed). Fan is a strange size/power rating, otherwise I wouldn't have bothered thinking of repairing it. If you can get access to the bearing then use something light. Say sewing machine oil or 3-in-1. OK, thanks. -- Andrew Gabriel |
Bearing Oil
In message , nightjar
writes "Andrew Gabriel" wrote in message . .. What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? Bronze bearings are usually intended to be self-lubricating. Until they dry out Oiling them runs the risk of oil + dust creating an abrasive mix that will quickly wear the bearing away. Sorry, but ******** Powdered graphite is the best lubricant. Sorry, but it isn't PB bearings absorb the oil, they are porous. Graphite will just clog up the bearing surface However, if you must oil it, use sewing machine oil. For computer fans, yes for larger bearings really Anderol should be used Trust me - I have a clue -- geoff |
Bearing Oil
"raden" wrote in message ... In message , nightjar writes "Andrew Gabriel" wrote in message ... What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? Bronze bearings are usually intended to be self-lubricating. Until they dry out You are presuming that they are oil impregnated porous bronze bearings. Decent self-lubricating bronze bearings have a suspension of lead in the bronze and don't dry out, nor do graphite impregnated porous bronze bearings. Oiling them runs the risk of oil + dust creating an abrasive mix that will quickly wear the bearing away. Sorry, but ******** I spent more than a decade making and repairing industrial clocks. One of the quickest way for anyone to wreck them was to oil the bronze motor bearings. Colin Bignell |
Bearing Oil
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Bearing Oil
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Bearing Oil
On 15 Nov 2005 23:49:15 GMT, Andrew Gabriel wrote:
What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? 3 in one oil |
Bearing Oil
On Wed, 16 Nov 2005 08:14:10 -0000, nightjar wrote:
"raden" wrote in message ... In message , nightjar writes "Andrew Gabriel" wrote in message k... What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? Bronze bearings are usually intended to be self-lubricating. Until they dry out You are presuming that they are oil impregnated porous bronze bearings. Decent self-lubricating bronze bearings have a suspension of lead in the bronze and don't dry out, nor do graphite impregnated porous bronze bearings. Oiling them runs the risk of oil + dust creating an abrasive mix that will quickly wear the bearing away. Sorry, but ******** I spent more than a decade making and repairing industrial clocks. One of the quickest way for anyone to wreck them was to oil the bronze motor bearings. Indeed. Those are very low torque low ROPM bearings indeed, and must be run essntially dry. The same is NOT true of motor bearings, which are high RPM and medium torque. These must NOT be run dry. Colin Bignell |
Bearing Oil
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Bearing Oil
"The Natural Philosopher" wrote in message . .. .... I spent more than a decade making and repairing industrial clocks. One of the quickest way for anyone to wreck them was to oil the bronze motor bearings. Indeed. Those are very low torque low ROPM bearings indeed, and must be run essntially dry. The same is NOT true of motor bearings, which are high RPM and medium torque. These must NOT be run dry. You are thinking of the wrong type of clock. The ones I made were industrial timers, based on synchronous motors. Colin Bignell |
Bearing Oil
In message , nightjar
writes "raden" wrote in message ... In message , nightjar writes "Andrew Gabriel" wrote in message k... What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? Bronze bearings are usually intended to be self-lubricating. Until they dry out You are presuming that they are oil impregnated porous bronze bearings. I am Decent self-lubricating bronze bearings But they're not, they are cheap and nasty, aren't they have a suspension of lead in the bronze and don't dry out, nor do graphite impregnated porous bronze bearings. Oiling them runs the risk of oil + dust creating an abrasive mix that will quickly wear the bearing away. Sorry, but ******** I spent more than a decade making and repairing industrial clocks. And what sort of RPM are we talking about completely different animals One of the quickest way for anyone to wreck them was to oil the bronze motor bearings. Repairing fan motors with PB bearings is part of what I do now for a living (well, not me personally anymore). I buy 1000 pb bearings at a time, they are kept immersed in oil for best results I do have a clue ... Sorry, Colin, but you're completely wrong here -- geoff |
Bearing Oil
In message , Andy Dingley
writes I use "Finish Line", because it's what I use on my bike and it's handy. Break Free or Tri-Flow are useful too. If you don't have some, get a small bottle because this stuff is always handy. Sewing machine oil would work fine. Would a tiny bit of car engine oil do? Much too viscous Actually, it's not, it would be OK WD40 will work, if you're really stuck and it's what you have, I would advise against that, it would just wash out any oil left in the bearing -- geoff |
Bearing Oil
In message , Rob Morley
writes In article , says... What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? I've used it in the past when I didn't have anything else to hand, and it seemed to work OK. I'd use it in preference to 3-in-1, which gums up quite quickly. OK, we'll see I oiled the bearings in my SATA cradle fans a couple of days ago. I'll report back if and when they get noisy -- geoff |
Bearing Oil
On Wed, 16 Nov 2005 21:33:40 GMT, raden wrote:
In message , nightjar writes I spent more than a decade making and repairing industrial clocks. And what sort of RPM are we talking about The last one I looked at was around 16 poles so 400rpm ish carrying next to bugger all load of any description but for some obscure reason those *do* get buggered if lubricated with light oil - probably I reckoned to the lack of sealing and a slighly dusty environment. Anything much bigger like car radiator fan motors (and probably boiler fans) thrive on having the bearings soaked in a light oil for a few days. -- |
Bearing Oil
"raden" wrote in message ... In message , nightjar writes "raden" wrote in message ... In message , nightjar writes "Andrew Gabriel" wrote in message . uk... What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? Would a tiny bit of car engine oil do? Bronze bearings are usually intended to be self-lubricating. Until they dry out You are presuming that they are oil impregnated porous bronze bearings. I am Decent self-lubricating bronze bearings But they're not, they are cheap and nasty, aren't they Creating an even suspension of lead in bronze is not that simple, so they are not cheap, or at least they weren't when I used them. I suspect that many plain bronze bearings these days are just that: plain bronze. .... I spent more than a decade making and repairing industrial clocks. And what sort of RPM are we talking about I don't have a motor to hand now, but it was either 1100 RPM or 1350 RPM. They were then stepped down to speeds between 1rpm and 1/12 rph, depending on the timing function they were required to carry out. One of the quickest way for anyone to wreck them was to oil the bronze motor bearings. Repairing fan motors with PB bearings is part of what I do now for a living (well, not me personally anymore). I buy 1000 pb bearings at a time, they are kept immersed in oil for best results I do have a clue ... Sorry, Colin, but you're completely wrong here I think you have interpreted my warning that oiling bronze bearings runs the risk of knackering them to mean that it will, inevitably do so. It does not, it means there is a risk of doing so and I also speak from personal experience. However, I will admit that experience was quite a long time ago (there is not much call for electromechanical process control these days) and that much of the equipment I made probably was used in relatively hostile environments. Colin Bignell |
Bearing Oil
On Wed, 16 Nov 2005 22:56:02 UTC, Matt
wrote: Anything much bigger like car radiator fan motors (and probably boiler fans) thrive on having the bearings soaked in a light oil for a few days. And washing machine spiders...or so I was instructed. -- The information contained in this post is copyright the poster, and specifically may not be published in, or used by Avenue Supplies, http://avenuesupplies.co.uk |
Bearing Oil
Andy Dingley typed:
On 15 Nov 2005 23:49:15 GMT, (Andrew Gabriel) wrote: What's a good bearing oil for a phosphor bronze (I think) bearing in a small computer fan? "Small bearing oil". Needs to not go gummy with age (3-in1 is terrible for this) and mustn't contain solvents that annoy the plastic (some of the Teflon containing oils have additives to keep it in suspension which are a bit problematic). I use "Finish Line", because it's what I use on my bike and it's handy. Break Free or Tri-Flow are useful too. If you don't have some, get a small bottle because this stuff is always handy. Sewing machine oil would work fine. Would a tiny bit of car engine oil do? Much too viscous Yes But.... WD40 will work, if you're really stuck and it's what you have, Which was designed as a water displacer (WD) with F-all lubricating in it, even paraffin would be a better choice. - |
Bearing Oil
nightjar nightjar@ wrote:
Creating an even suspension of lead in bronze is not that simple, so they are not cheap, or at least they weren't when I used them. I suspect that many plain bronze bearings these days are just that: plain bronze. 'Twas ever thus, surely? The most common type is just sintered bronze alloy, impregnated in oil. The trade name "oilite" came to mind and Google soon led me to http://www.bsaoilite.com. The following is copied from their standard range brochure which can be downloaded from http://www.bsaoilite.com/content/ind...=67&struid=104 quote Standard OILITE bearings are impregnated with a highly refined mineral oil to ISO VG (SAE 30) having a high viscosity index and containing anti-oxidant, anti-rust and defoamant additives. A replenishment of oil should be carried out after 1000 hours of use or yearly. These intervals can be extended for bearings with relatively thick walls and shortened for low porosity bearings. Bearings running submerged in oil or in oil-splash will not require replenishment. A wide range of operating temperatures are [sic.] available. Please contact our Technical Department on +44 (0) 1473 233300. To prevent possible seizures with stainless steel or hard-chromium plated shafts, an addition of molybdenum disulphide to the impregnation oil must be specified. Any particular application thought to be outside standard conditions should be referred to our Technical Department who can be contacted on: +44 (0) 1473 233300. However, here are some basic rules: 1. Low viscosity oil for low temperatures, high speeds or light loads 2. High viscosity oil for high temperatures, low speeds or heavy loads 3. High viscosity index oil for wide variations in operating temperatures 4. Oxidation stable oils for long-period usage 5. Oil with ‘oiliness’ additives for boundary conditions 6. Oil of lesser ‘oiliness’ for full film (hydrodynamic) conditions 7. Oil with Extreme Pressure (E.P.) additives for very heavy or shock loads /quote -- Andy |
Bearing Oil
In message , Andy Wade
writes nightjar nightjar@ wrote: Creating an even suspension of lead in bronze is not that simple, so they are not cheap, or at least they weren't when I used them. I suspect that many plain bronze bearings these days are just that: plain bronze. 'Twas ever thus, surely? The most common type is just sintered bronze alloy, impregnated in oil. The trade name "oilite" came to mind and Google soon led me to http://www.bsaoilite.com. .... ... However, here are some basic rules: 1. Low viscosity oil for low temperatures, high speeds or light loads 2. High viscosity oil for high temperatures, low speeds or heavy loads 3. High viscosity index oil for wide variations in operating temperatures 4. Oxidation stable oils for long-period usage 5. Oil with €˜oiliness additives for boundary conditions 6. Oil of lesser €˜oiliness for full film (hydrodynamic) conditions 7. Oil with Extreme Pressure (E.P.) additives for very heavy or shock loads /quote Which, as I said before, is all a bit over the top for a computer cooling fan .... but then, it is uk.d-i-y, isn't it -- geoff |
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