Universal Calibrating Machine
(UCM) Manual
(PM-5201)
Morehouse Instrument Company, Inc.
1742 Sixth Ave., York, PA 17403-2675 USA
Phone: (717) 843-0081
www.mhforce.com
Page 9
Rev. 11/2021
The Universal Calibrating Machine consists primarily of two load bearing frames:
Moveable Yoke Assembly
Two tension tie bars connect the upper and lower yoke platens. The lower yoke platen is permanently fixed in
position by means of the set screws and tension collar nuts. An aperture in the center of the lower yoke platen
provides for insertion of either an alignment adapter or a tension member (pulling rod). When positioning the
moveable yoke assembly, the tie bar locking collars are used to support it on the upper machine platen. The
upper yoke is adjustable to accommodate various calibration configurations, and to minimize necessary jack
travel. A motorized positioning mechanism for the upper yoke is standard on all capacity Universal Calibrating
Machines.
Stationary Frame Assembly
The stationary frame assembly consists chiefly of two platens connected by tie bars. Adjustable feet, together
with a circular level mounted on the lower machine platen, provide the means for leveling the machine. Con
-
struction of the stationary frame assembly assures an extremely rigid support with negligible machine deflec
-
tion, even at capacity load.
2.3 Hydraulic Jack Assembly
The Morehouse hydraulic jack assembly (Figure 5) is specially designed and constructed to be suitable to
perform precise calibration work. The jack is attached to the top of the upper machine platen to maintain the
vertical axis of the jack precisely in line with that of the calibration standard and test instrument. Ram travel of
this jack is 1” (25.4 mm) maximum. Hydraulic pressure at capacity load is approximately 4,500 psi (31 026 kPa).
2.4 Loading Power Supply
A hydraulic power system is required to supply, maintain, and adjust the hydraulic fluid pressure in a UCM
hydraulic jack in order to provide various calibration loads. Morehouse provides three optional hydraulic power
systems for all UCM models based on the needs and conditions provided by the user:
1- Hydraulic Hand Pump
2- Universal Hydraulic Pump (UHP)
3- Auxiliary Hydraulic Screw Pump
