A versatile linear actuator has been developed wherein a linear bearing is
housed in an aluminium body. The bearing gives a very smooth linear movement
and also ensures a high cross-load bearing capability.
The ram shaft of the actuator is a lightweight rigid hollow shaft that is
hard chrome plated, and precisely ground. The linear motion to the ram is
provided with the help of a ball screw. The inner face of the ram tube is
mounted on a nut of the ball screw. The ball screw when rotated moves the
ram tube in or out of the linear actuator. A full guide key, hARDEned and
suitably ground, has been provided to prevent the rotation of the ram shaft.
A pair of unique four-point contact and zero clearance ball bearings have
been used to drive the ball screws. These bearings have pre-loaded balls,
which help in taking substantial radial, axial, and moment loads.
Internal view of ball screw and nut
Linear bearing and ram tube
Electrically (24 V DC)
Stroke upto 1500 mm
Axial load capacity: 1000 N
Speed: 60 mm/s
Static load rating: 810 kgf
Dynamic load rating: 390
Static load rating: 1130
Dynamic load rating: