The main body are partial (sees also structure to split) revolves by the drive shaft impetus cylinder body, causes the uniform distribution to circle the drive shaft middle line rotation on the cylinder body seven plungers, presses through the central spring column slippery module in slippery boots in variable (or slanting plate) on. Thus, the plunger revolves along with the cylinder body but makes the reciprocal motion, completes blots and presses the oil movement.

In the quota organization the slanting plate fixes throughout on the quota end cover, cannot change the plunger the travelling schedule,therefore its current capacity is fixed. Should pump only must replace matches the oil disk also to be possible to take the oil motor use.

Under the nominal pressure of 31.5MPa, also derived from a 1.25,5,13,16,32,100 ml / r emission specifications

N=QP/(60) (Kw ) Actual use electrical machinery power

QCurrent capacity L/min(Actual use current capacity)

PPressure MPa(Actual working pressure)

Overall effectiveness index 0.85

The user may select the electrical machinery according to the actual use load after the upper row formula computation.

Dimension   model	2.5MCY	10(16)MCY	25(40)MCY	63(80)MCY	160MCY	250(400)MCY
A	79×84	φ125	φ150	φ190	φ240	φ280
B(f9)	φ52	φ75	φ100	φ120	φ150	φ180
C	15.8	27.5	32.5	42.8	59	63.9
D(h6)	φ14	φ25	φ30	φ40	φ55	φ60
E	3	4	4	4	4	5
F	20	30	45	50	100	100
G	25	40	52	60	106	110
H	26	41	54	62	110	112
I	62	86	104	122	180	212
J	77	109	134	157	230	272(277)
K	119	194	246	300	411	492(502)
L	44	71	83	108	141	170
M	M10×1	M14×1.5	M14×1.5	M18×1.5	M22×1.5	M22×1.5
N	M8	M10	M10	M12	M16	M20
P					M16	M20
Q(h9)	5	8	8	12	16	18
R	φ80	φ100	φ125	φ155	φ198	φ230
S	84	142	172	200	340	420
T	M18×1.5	M22×1.5	M33(M42)×2	M42(M48)×2	φ55	φ64(φ66)
U					φ64	φ76
AA	φ92	φ150	φ170	φ225	φ300	φ360
BB	171	253	308	385	525	622(632)

1Installment joint method

The CY forming roll to the ram pump is the unidirectional rotary pump,for to is revolving generally (looks from the axial-tab terminal clockwise, otherwise for is reverse; The user if needs the reverse rotary pump please in the ordering time explains). Therefore, installs time should first pay attention to the hand of rotation, the turnover
oil mouth takes over control also should tally pumps the superscript to record the request. The attention in pumps before the use to have(to face to the oil discharge mouth on) in adds the full oil.
The oil pump may use the support or the flange installment, pumps should use the common foundation support with the motive machine. The support, the flange and the foundation all have the enough rigidity,
in order to avoid the oil pump revolves time has the vibration. Is bigger than or is equal to 160L/ regarding the current capacityMin pumping, because the motive machine power is big, suggested do not have to install in the fuel tank. Pumps the drive shaft and the motive machine output shaft installs the proper alignment error and its
adjusts the method as follows:
1Support installment: The motive machine output shaft and the support install the precision the inspection method to see attempts;
In the left chart, the proper alignment error is 0.05; the verticality error (is pumps for 0.05 R installs spiral hole distributed radius);

2Flange installment: Installs in the form in this kind between, if the motive machine with pumps uses the shaft coupling joint, then it installs the precision inspection method same the chart. If pump spindle direct insertion motive machine output shaft in, then it installs the precision inspection method to see attempts.

Pumps should use the flexible coupling joint as far as possible with the motive machine drive shaft between, uses the flexible coupling also to be supposed to conform to the related standard. The recommendation uses the quincunx shaft coupling or the elastic cylindrical pin shaft coupling. In order to avoid pump spindle
withstanding radial force. The recommendation user uses the CY-Y oil pump electrical machinery which this factory produces. Both facilitates practical, and may enhance the service life which pumps.

Is not big in the working conditions vibration, the motive machine work also is steady (for example electric motor) in the situation may use the flexible coupling joint directly. If the motive machine vibration is big (for example diesel engine or uses belt pulley, gear drive) suggests according to graphic the way installment. Pumps
installs the support and the motive machine public foundation must have the enough rigidity.        
Before the hydraulic pressure pipelining should strictly clean, the common steel pipe should carry on the acid pickling, and after center and processing. The clean work should carry on after the welded pipe, by guarantees the pipeline to be clean. If works under the high temperature environment, should use the effective radiation measure,
is sure the pump body any to appear externally the partial temperatures not to surpass 80 (for example to surpass should install cooling system).

The oil pump permission revolves 90 the installment, also may the vertical installment , no matter what kind installs the method, outside its pump housing the drainage pipe should surpass above the oil pump bearing middle line, by lubricating oil pump bearing.

The oil pump installs when should consider as far as possible causes the fuel tank liquid level to be higher than pumps the oil ingraphic aAlso may install the oil pump in the fuel tank the self-absorptiongraphic bThe intake pipe should as far as possible short but thick, the bend are most does not surpass two.Pumps the self-absorption should not be bigger than 500mm or the self-absorption vacuum highly is not bigger than 0.016Mpa.The condition permission speech, should use as far as possible like attempts the method to install the oil pump.          
Below according to attempts a method installs when must pay attention to the item: (1) The fuel tank lowest oil level to the oil pump center distance should >= 300, pump may the small angle of deflection start
self-absorption; (2) The intake pipe passes the diameter not to be smaller than the recommendation value, the cut-off valve passes the diameter to be supposed an intake pipe to be bigger than grade; (3) Oil pump intake pipe length L <= 2500mm, the pipeline bend does not have to be more than two, the intake pipe end to fuel tank sidewall distance H1 >= 3D, to fuel tank bottom surface distance H >= 2D; (4)Is bigger than 160L/ regarding the current capacityMin pumps the recommendation to use flows in backward the self-absorption.

Creates the axial-tab terminal rubber seal oil leak. Under the oil pump long-term small angle of deflection operating mode works, because divulges few, is not easy to carry off the quantity of heat to be supposed to use the forced cooling method (left chart).

2Work oil used
This series oil pump work uses with the fat liquor recommendation lowly congeals the hydraulic fluid, anti- rubs the hydraulic fluid, the aviation hydraulic fluid and the precision machine tool hydraulic fluid and so on. The normal work oil temperature is 15 ~ 65 , the ideal works the oil temperature 504 , the kinematic viscosity is
27 ~ 43mm2/The S fat liquor works under the normal work temperature, should guarantee its kinematic viscosity when 65 is not lower than 27mm2/S, 15 when is not higher than 43mm2/S. When cold start but creates greatly as a result of the self-absorption vacuum which the fat liquor kinematic viscosity should not be bigger than 0.016MPa, the fat liquor control in the NAS10 level (or 19,/16) within the difference remarkably
will affect the oil pump life!
After the oil pump initial uses month or long-term usage period of time, should reinspect fat liquor  and the replacement or cleans the filter. The unqualified fat liquor must replace the fresh oil. The fat liquor trades the oil standing operating procedure to be as follows (conforms to one of following conditions to be supposed to
trade oil)
1Viscosity change: Compared to initial use when the viscosity change is bigger than 10 ~ 15%;  
2 Acid value: Is bigger than 0.5mg KOH/G;
3 Moisture: Is bigger than 0.1%;
4 Proportion: Compared to initial use when changes is bigger than 0.05.

3Fuel tank and filtration
The fuel tank design should consider has the reasonable volume, can guarantee pumps works under the normal oil temperature, fully considered the area is different and the work nature difference, when the necessity should add cools and the heat installation.
The fuel tank air inlet should be loaded with the air strainer, other parts must seal, in order to avoid the dust enters the fuel tank, the air bubble which the box planted agent establishes the partition board to eliminate when oil discharge brings, on the partition board is loaded with 80 item mesh.
The hydraulic system should partially establish 10 mu ~ 20 mu fine filter in the oil discharge, by maintains the system fat liquor to be clean. (Pumps divulges drill tubing not to permit attire fine filter, in order to avoid causes shell body cavity pressure to increase,creates skeleton seal place oil leak.)
4Revolution
Before the revolution inspects the oil pump to install correct is whether reliable, the shaft coupling installs whether conforms with the request, with hand starting or cranking shaft coupling whether has the deactivation phenomenon.When after the initial use or the long-term storage revolves, should before the start in the shell which pumps the note completely clean work fat liquor, otherwise does not permit the start! When start must inspect pumps changes whether correctly!
The overflow valve and so on adjusts the system in to the minimum value, strictly prohibits having the load start!
Pumps when the start should select first moves, after is normal the oil again the continuous working. Does not have the undesirable tendency occurrence after the revolution certain time, again the step-by-step control to needs the pressure and the current capacity.The overflow valve biggest adjustment value does not surpass 35Mpa.
Pumps stops using three months when reuses, should first empty revolves for half hour. In the revolution discovered pumps has the exceptionally elevation of temperature, divulges, the vibration and the noise, should stop immediately carries on the inspection.
When the oil pump stops, should discharge first, latter engine off.

5Informs the user
The user uses the fat liquor is lengthens pumps the service life the key! Please by all means must presses in this instruction booklet "the use notice" the center related request execution.