Jack mounting and jack adapters. The pictures below feature a Tronair jack, jacks of lesser quality may not have the feature of one inch mounting. For alternate mounting see the pictures lower on the page using our "over the top" adapter.
Remove the jack cup from the top of the jack ram
Note the one inch hole in the top of the jack ram.
One inch studs are supplied with all our kits, this is the preferred mounting method
Screw the stud into the bottom of the transducer load cell, make sure the stud threads all the way into the cell with no "air gap" between the cell and the stud.
The cell is now mounted, make sure that there are no "air gaps" between the cell and the top of the jack ram while jacking and under load.
If your jack does not have the one inch hole or removable cup, check the bottom side of the ram for the hole. Pull the ram tube out of the threaded cylinder and check, some jacks will have the hole on the bottom.
Over the top of the ram adapters. Some jacks do not have the one inch hole mounting, if not and you can not machine a hole in your ram you will have to use an "Over the Top" adapter. These adapters are not included with our kits and are available as an option.
Warning: The use of over the top adapter can be dangerous, only trained and qualified personnel should attempt to use this type of adapter. This type of adapter requires extreme attention to detail, centering and placement as well as monitoring the cell and adapter for movement. Failure to properly mount and use this adapter will result in damage to the aircraft or injury to personnel.
Shown here, find our small 25K cell with our 3.5 inch adapter for "over the top" mounting
There are two sizes of adapters that fit the cells, our 3.5 inch adapter fits our small cells 50K and below. Our large adapters fit our large cells up to 100K. Some jacks, like a Meyer may have a very large lifting cylinder, our large adapters will fit and can be used with our small cells. We also custom manufacture adapters for all types of jacks.
(old style adapter shown) Note the depth that the adapter has and the area of the bolt contact with the ram.
(old style adapter shown) Note: The placement of the adapter and bolt alignment does not line up with the hole in the jack ram. Always prefit the adapters and make sure that all six bolts are in firm contact with the ram top at all times. Touque the bolts to 100 in/lbs
Here is our adapter located on top of the jack ram, always count the threads on each bolt to ensure centering. Faliure to properly center the adapter will result in injury or damage as the cell can be forced off center of the ram. Only qualified and trained personnel shall use our adapters.
Once the adapter is secured and torqued to 100 in/lbs the cell can be installed in the one inch hole using the existing mounting stud supplied with our kits.
Here is a picture of a competitors adapter, be very careful if you use this type. Note that it barely holds onto the top of the jack and uses small set screws. If you are using this type of adapter always monitor it for movement during use.
Here is another popular kits adapter, note it is not steel and has the same shallow grip range on the top of the jack ram. Always check for striped threads and damage on this type before use.
If you need adapters for your application just email or call us 561-281-6179
larryjackson@jawsscales.com Just click the pictures for direct email access!
