A hydraulic press is a machine that has a bed or a plate in which the metallic material is placed so that it can be crushed, straightened or moulded.
Screw Jack self locking, it depends on pitch, larger pitch, lower self locking. Larger speed ratio, higher self-locking. To self-locking completely, extra add braking motor.
For translating screw jacks are fitted with a steel protective tube that stores the lifting screw when the screw jack is in the closed position.
Using standard greases and oil seals, the screw jack working temperature is from -20 degree to 100 degree. At present, we have customer use the screw jack at 300 degree with special grease and seals. Any special working temperature, please tell Goodsjack sales or engineer before selecting models.
The acme screw jack uses an acme threaded screw that is typically self-locking, meaning it will hold its position without a brake. Ball screw jacks use ball screws to convert rotary motion to linear movement, and require 1/3 the horse power compared to a acme screw jacks.