KMCL	-4		Y	12	-	-
Series number	Size of shell		Size of tube	Heat  transfer  area	Type of connection	Use
KMCL	3：3" 4：4" 5：5"	6：6" 8：8" 10：10"	Y：10mm	Reference specification table	-:Threaded F:flange	-:Use for general  b:use for marine

Model	Oil ports	Water ports	Refer flow range ℓ/min	Heat trans area㎡	Weight kg
3Y04	PT3/4″	PT3/4″	60	0.39	9.5
3Y06	PT3/4″	PT3/4″	100	0.58	12.0
4Y08	PT1 1/4″	PT3/4″	150	0.80	18.0
4Y12	PT1 1/4″	PT3/4″	250	1.22	23.0
4Y20	PT1 1/2″	PT3/4″	350	1.92	30.0
5Y30	PT2″	PT1 1/4″	600	3.03	41.0
5Y40	PT2″	PT1 1/4″	850	3.94	52.0
6Y20	PT1″	PT1″	350	2.0	36.0
6Y50	PT2″	PT2″	1000	4.84	60.0
6Y60	PT2″	PT2″	1200	5.97	70.0
8Y80	PT2″	PT2″	1500	7.83	100
8Y100	PT2 1/2″	PT2″	2000	10.32	120
10Y80	PT2″	PT2″	1600	7.83	135
10Y100	PT2 1/2″	PT2″	2100	10.32	163
10Y145	PT2 1/2″	PT2″	2300	14.5	180
10Y200	PT3″	PT2″	2600	20.0	230

Hydraulic piping in the oil, because of its inter-wall friction and the friction between the oil and the heat generated is the oil temperature rise, generally confined to the oil system of hydraulic oil 55 degrees, above this temperature , due to lower viscosity to increase oil leakage, valve performance, reduced the efficiency of the pump also fell, the oil deterioration and other issues also will be born, in order to prevent the above disadvantages, so the use of coolers.
The current product range are：
1、KMLC series of oil cooler is the general structure of bare-tube cooling tube is made for possession of a few more densely arranged, heat the best results.
2、HT series of oil cooler is attached to iron plates of the cooling pipe structure is made to increase the cooling area, so that cooler miniaturization.
3、HH series oil cooler is the general structure of bare-tube cooling tube made, easy to clean, for general use by the clear-type cooler.
4、DT oil cooler is a tooth-type cooling tube formed by rolling, get out of the tooth surface, heat dissipation are large.
1、Heat exchange capacity Q (Kcal / h)
Heat is greater than the amount of heat, a difference of heat if the cooler can be used to prevent the oil temperature rise, this is called the amount of heat exchange cooler Q, chosen based on this Q coolers, signs, such as used in the calculation table A.
Q=（T1-T2）*60*O.85*0.45*WS=(t2-t1)*60*1*1*Wt

2、Cooling water outlet temperaturet2(℃)
Relative to the cooling water outlet temperature of the cooling water flow rate of oil: cooling water=1：0.5～1 (Note) At this time of the cooling water flow rate (cooling water piping inside and out flow) shall be 0.5 ~ 1.5m / s range
t2=Q/60*WT+t1(℃)。

3、Average temperature difference△tm(℃)
For moving oil and cooling water export, import temperature difference as the base, and seek logarithmic mean temperature difference△tm。
Logarithmic mean temperature difference
Do move oilT1→T2
Cooling Water t2→t1
△t1=T1-t2，△t2=T2-t1
By the type△t1与△t2，Corrections are as follows: From Table B the desired logarithmic mean temperature difference △ t'm, multiplied by the correction factor of X, X as shown below, obtained from Table C.
（t2-t1）/(T1-t1)=Y(T1-T2)/(t2-t1)=Z
△tm=△t'm*X。

4、Heat transfer areaA(m²)
A=Q/（△tm*K）。

5、All in all heat transfer coefficient K（Kcal/m²℃*h）
K values depending on the cooling water 'hydraulic oil viscosity varies, usually K = 200 ~ 650Kcal/m²℃*h，Kuking Multi-tube cooler,K=350～500Kcal/m²℃*h
1/K=d1/(d2hr)+1/hs+rs。

6、By the motor output power, calculate the necessary exchange of heat
Heat E（Kcal/hr)=Output W(KW)*860
（Kcal/hr*KW)Exchange the necessary heatQ（Kcal/hr)=Ex∝∝:
Heat exchange coefficient
General machinery without heat by taking0.4～0.6
Plastic machinery, die-casting machinery, there are those who take the heat source0.6～0.8 。