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4 years later, it seems like: gearguru & tbuelna go on that list too.

Hi there! When an order for gear manufacturing is accepted, certain steps must be taken to turn the drawing into parts. These steps may include creating of manufacturing drawings, designing and building the fixtures and tooling, writing the CNC programs. This work is made only once for this...

I'm looking for a post on this forum, where somebody said that a person named Emil (if memory serves well) might no longer be with us, because his website has been removed, but before that happened the author of the post had been able to save some spreadsheets from that site.

Recently I have come across a 1.8Mod 30PA spline. Does anybody know, what standard is that, if any? Thanks!

Hi I need the WD97MCRS.exe Word 97 Update: Macro Vulnerability, May 2001 Language version: Polish It used to be available for download from office.microsoft.com/downloads/9798/Wd97mcrs.aspx but it is no longer there, no luck finding it elsewhere (Polish version) either. Any help will be much...

The Oerlikon SKL gear lapping machine is capable of lapping the spiral bevel gears and hypoid gears up to a gear dia. of approx. 400 mm. The driven gear spindle has some inertia, so I suppose some smaller gear teeth could be shaved off at the start of a cycle. The pinion in question is 25 mm...

I'm replicating this allegedly original gear set and find it very interesting that it was made with the Gleason system, while I expected it to be made with the German Klingelnberg-Palloid system, which was already available at that time. Does anybody know more about the technology they used there?

I'm looking for the cutter designation information for a No.104 straight bevel generator. The designation is A,B,C,D or E and it stands for the profile (or pressure) angle of the blades, needed to control the lengthwise crowning of the teeth. Does somebody know what angle is designated by each...

I have come accross an item (a spiral bevel gear set), which has been reportedly made of 17NiCrMo6 (1.6566) carburizing steel and the surface hardness is 68 HRc, while a typical would be around 58-62 HRc. Does anybody know how did they achieve 68 HRc on this steel? Here's more information: The...

I have come accross a spiral bevel gear set, 5DP, used in a milling head drive. The gears run with very little backlash. The material analysis showed that those gears were made of 17CrNiMo6, a 1 mm thick carbourized layer has been also found. The surface hardness of the teeth was measured 68...

I have seen some gears for the agriculture machines having one or more shallow grooves on the outer dia. http://files.engineering.com/getfile.aspx?folder=900bc5de-f941-406e-8ce1-3012c2d3aa40&file=Obraz_001.jpg What are these grooves for? Thank you in advance for your input...

The hole fits in ball bearings are not in line with the ISO fit system, beacause the tolerance of the hole is always pointed outside of the material. What is the reason for that? Thank you in advance for your input.

I've come accross a small size planetary gear set, module 1 mm, external dia. round 50 mm. The gear set uses spur gears. All the gears are made of tempered steel, 22-26 HRc. The set has been noisy, so grinding of the planet gears and the sun gear to the DIN 6 quality has been ordered. The ring...

Does anybody have news on the meshing with gears forum, off-line for weeks?

Hi I'm trying to find out the root dia. tolerance for the folowing spline: Flat root side fit B92.1 1996 DP6/12 14 Teeth 30 PA Internal I've found in the standard, that the root dia. is 2.562, but have had difficulties to find its tolerance. Is it 2000/P+130=.0463? Any help would be much...

I need a drawing of a 72480311 feed cam for a #726 Revacycle machine, to make this cam. Can anybody help?

I have a planetary gear 32DP 20PA, ring dia. 100 mm. It runs at 150 RPM. The requirement is it must run very quiet, but a low humming sound is audible. I was thinking about using 64DP and/or 17PA to address that. Does anybody have experience / information on how much would it change the picture...

Does it help in anything when the mating surfaces of an involute spline are hard (e.g. carbourized)? They just touch, no friction, so maybe tempered is equally good?

Does anybody know how do they grind the internal teeth on small spline gauges? I'm looking at a DIN5480 gage with internal teeth, and the certificate says the errors are in 2 mikrometers, it looks like ground. But how can that be possible. Just out of curiosity...

I have seen some drawings where gear quality is specified as 8fs DIN 3967. I browsed through this standard only to find that it should be specified with something like 8f25. The standard says nothing about "fs", if anyone knows what "fs" means, your input would be highly appreciated.