Morehouse UCM - Load Bearing Frames; Hydraulic Jack Assembly; Hydraulic Pumps

Universal Calibrang 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. 3/2024
2.3 Load Bearing Frames
The Universal Calibrang Machine consists primarily of two load-bearing frames:
Moveable Yoke Assembly
Two tension e bars connect the upper and lower yoke platens. The lower yoke platen is permanently xed in
posion by means of the set screws and tension collar nuts. An aperture in the center of the lower yoke plat-
en allows the inseron of either an alignment adapter or a tension member (pulling rod). When posioning
the moveable yoke assembly, the e bar locking collars are used to support it on the upper machine platen.
The upper yoke is adjustable to accommodate various calibraon conguraons and minimize necessary jack
travel. A motorized posioning mechanism for the upper yoke is standard on all capacity Universal Calibrang
Machines.
Staonary Frame Assembly
The staonary frame assembly consists chiey of two platens connected by e bars. Adjustable feet and a
circular level mounted on the lower machine platen provide the means for leveling the machine. The construc-
on of the staonary frame assembly ensures extremely rigid support with negligible machine deecon, even
at capacity load.
2.4 Hydraulic Jack Assembly
The Morehouse hydraulic jack assembly (Figure 5) is specially designed and constructed to be suitable to per-
form precise calibraon work. The jack is aached to the top of the upper machine platen to maintain the ver-
cal axis of the jack precisely in line with that of the reference standard and unit under test. The ram travel of
this jack is 1” (25.4 mm) maximum. Hydraulic pressure at capacity load is approximately 4,500 psi (31 026 kPa).
2.5 Hydraulic Pumps
A hydraulic pump is required to supply, maintain, and adjust the hydraulic uid pressure in a UCM hydraulic
jack in order to provide various calibraon loads. Morehouse provides three oponal hydraulic pumps for all
UCM models based on the needs and condions provided by the user:
1- Hydraulic Hand Pump
2- Universal Hydraulic Pump (UHP)
3- Auxiliary Hydraulic Screw Pump