We normally specify spur and helical gears with 2.35M whole depth and 2.0M working depth to allow for grinding and shaving if necessary. We have a supplier who is proposing to change whole depth to 2.25M to suit their standard hobs. Everything else: working depth, centre distance, rack shift...
I am trying to specify a "keystone" taper on a cylindrical spline, i.e. to have the male and female splines be cylindrical in cross-section, but to have the tooth thickness on the male, and space width on the female, increase linearly along the axis. The application is a female selector which...
We have a steering box with the input spline specified as 1" x 79 serrations per ZGN 715.
I have found the dimensions of this on a Nadella shaft catalogue, but I am looking for a mating female part. Can anyone advise:
Dimension of a female 1"x79 ZGN 715 spline?
Who issues ZGN 715? I can't...
We are looking to use a bronze bushing in a vehicle differential planet gear (i.e. high-load, low speed, oil lubrication). We are looking at either Al Bronze CC333G = C955000 or a phosphor bronze. We are getting different values for a recommended max bearing pressure depending on where we look...
A customer intends testing a vehicle of ours after conditioning it to -46 C (-50F). The vehicle has an axle and hub reduction which use case-carburized 8620 and 4820 gears. Does anyone have any experience of operation of such gears at these kind of temperatures? Obviously after a few minutes...
Hi,
I am looking for Strain-Life or failing that Stress-Life fatigue coefficients for the above steel plate. My usual sources (ASM Handbook Vol 19 and the ASM "Atlas of Fatigue Curves") don't seem to have it. Can anyone help?
I'm looking for a US equivalent of the above for spec'ing purposes, but it doesn't seem to exist. Some places give ASTM A487 Grade 6 as an equivalent but there are a number of problems with that:
The ASTM grade has a lower yield (655 compared to 700 MPa)
The ASTM grade has a huge permissible...
Quick Question - does the Woodhead damper company still exist? We dealt with them about 15 years ago but I can't find them on the web now. I think they may have been merged with/taken over by someone else (maybe General Kinetics?). Any clues much appreciated.
Is there a good or even foolproof way to determine whether a threaded joint has been damaged by cross-threading (bad assembly) -v- binding (bad manufacturing tolerancing or gauges). We believe the attached are caused by binding - if it were cross threaded the damage should be at the start of...
Our company normally specifies splined connections with the splined teeth, both internal and external, surface hardened by either induction hardening to 50-55 HRC (typically on 4140 or 4340 material) or case hardening to 58-63 HRC (8620) or occasionally nitriding. We have a new supplier which...
I'm looking for some terminology help here and my usual authorities (Dudley) don't have it.
My understanding is that:
An Amboid bevel is similar to a hypoid bevel (i.e., provides a bigger axle ratio than a spiral bevel but has a relatively larger pinion than a spiral and therefore better...
This question was asked earlier this year but I don't know if there was ever an answer. ANSI B92.1 and B92.2 standards for Inch and Metric, respectively, splines have been withdrawn by ANSI but there doesn't seem to be any replacement American standard. My company has used these standards in...
