First I need some clarification. Are you rotating the gearbox aroung the shaft? This may be an application not mentioned to the gearbox manufacturer and may require a special seal due to pressure created in the box due to centrifugal force of the oil over the breather.
If the gearbox is...
You may wish to look at NPTF dryseal USA standard taper pipe thread (Class 1) for both internal and external threads. According to the Machinery's Handbook, this gives the best seal for fluids as well as the strongest thread connection in tapered threads due to interference of threads over the...
One thing to be careful of in overhead doors. NEVER rely on the motor to act as a positional lock/brake for the door. The company I previously worked for designed a worm drive gearbox that was previously touted as a drive which could not be back-driven by the load. They found this to be a false...
When doing Fluid Power design I use the "LIGHTNING REFERENCE HANDBOOK" Copyright, 1990 By Berendsen Fluid Power of Whittier, California 90601.
This should get you all the basics required.
I hope this helps,
FINN
This particular piece is for a rack and gear hand actuated hydraulic system. The pinion gear is the part in question for plating. I did not use a bearing as TVP suggested due to non-continuous rotation and for cost consideration. I am still asking the question of plating preventing the...
I have a steel shaft which rotates very slowly in an aluminum housing. I have encountered some "galling" and "lockup" between the parts. Will zinc plating of the steel shaft prevent the "galvanic reaction" between the aluminum and steel, thereby reducing or...
blob,
dvd is assuming your are referencing electric motors. If you are refering to hydraulic motors, you will still have a drag problem (very small) from the idle motor, but you can get hydraulic pump drives from a number of sources (Durst div. of Regal-Beloit, FUNK, EATON...etc.) that will...
I ahve run into a similar situation where the fit of the seal in the bearing was causing too much heat generation at high rpm. You may want to check with your bearing supplier about the fit of the shields in your bearings causing your friction problem.
I also have a possible solution to your...
I am not sure how much of a "Beginner's" book it is, but "MARKS' STANDARD HANDBOOK FOR MECHANICAL ENGINEERS" by Eugene A. Avallone and Theodore Baumeister III has been a very good reference book for me. It is published by McGraw Hill. It gives alot of very basic ideas as well...
You are not clear as to what type of heat treating or what type of material you are using for these small parts, but it sounds like you are case-carburizing these parts. Have you considered flame-hardening or induction hardening? This eliminates the need for "packing" and can eliminate...
One thing to be aware of when selecting a polymer for a wear slide is water absorption. UHMWPE has good water resistance and is often cost-effective, but if the UHMWPE wears too quickly or melts, you may want to try PTFE (TEFLON). It is more costly but has a lower coefficient of friction and may...
If you are looking for a shaft adapter, you might try HUB CITY Division of Regal-Beloit Corp. in Aberdeen South Dakota (605) 225-0360. They Make a multitude of different shaft adapters for the farm-ag industry as well as industrial applications.
I don't know too much about screw bits other than the PHILLIPS type bit was patented by STANLEY WORKS many years ago. I suggest starting there for that one, and they may be able to provide the dimensions or maybe a website where you may find the others.
The MAchinery's Handbook also has alot of...
How about getting away from silicone completely? Have you thought of graphite? It works quite well in low heat situations and can be dispersed into very small areas using plain rubbing alcohol as a carrier.
Good luck.
FINN
If you try the adhesive "part locker" (i.e. LOCTITE from Permatex), and you still have failure problems, you may want to look at material differences between the housing and the bearing. Keep in mind, if you have an aluminum housing and a steel bearing, you will have different rates of...
