Bimba Linear Thruster - Manual

SERVICE AND MAINTENANCE INSTRUCTIONS
Linear Thrusters are precise linear actuators that use air pressure up to 250 psi. Air
cylinders are pre- lubri cated at the factory and should be used with a filter-lubricator
combination for best results. Otherwise, introduce a few drops of 10 weight oil into
the cylinder every 500 hours of operation.
Two spring loaded oiler ports are located on the face of the Linear Thruster hous-
ings. Introduce several drops of 10 weight oil into each port for every 100 hours of
normal operation, more often if rapid cycling is necessary.
CAUTION: When removing or replacing the air cylinder, be sure that the cylinder
mounting nut is not over-tightened. This nut should be tightened down and then
backed off approximately 1/8 turn so that the air cylinder floats. This is to prevent
binding of the cylinder rod and undue wear on the cylinder rod bearing or seal.
REPLACEMENT OF BEARINGS AND SEALS
For T Series Thrusters, worn or damaged linear bearings can be pressed out of the
housing after first removing the seals from both ends of the bores. The seals are
pressed into the bores and can easily be pried out with a screwdriver or similar tool.
Use a mandrel slightly smaller than the bore to press out the bearing and proceed
carefully to prevent damage to the I.D. Any traces of Loctite remaining within the
bore should be carefully removed by scraping.
Replacement bearings should easily slide into the bore with moderate finger pres-
sure. Spread two to four drops of Loctite RC/680 around the bearing case, insert
into the bore and rotate while pressing flush with the top of the housing. Set the
seal atop the bearing and immediately force it into the bore using a mechanical or
hydraulic press. Repeat this procedure for the other bearings and allow about 30
to 40 minutes setup time before returning the housing to service.
For the maintenance of the TE units, the bearings can be replaced in the field. The
bearings can be pressed out and then replaced with a new bearing plus a small
amount of RC 680 Loctite (1 drop wiped around leading edge of bearing).
Bimba Manufacturing Company
Monee, IL 60449-0068
TEL: 708/534-8544 • FAX: 708/235-2014
Support: 1-800-44-BIMBA
Visit our website at: www.bimba.com Form LTSI-809
LINEAR THRUSTER