OR	-60	-	-
Series number	Type of connection	Type of connection	Use
OR	T:threaded  F:flange	T:threaded  F:flange	-:Use for general  B:use for marine

Model	A	B	C	R	D	G	F	Max.flow ℓ/min	Weight kg	Heat trans area
OR-60	450	305	45	89	125	3/4″	3/4″	60	8.5	0.15
OR-100	555	403	68	114	145	3/4″	3/4″	100	11.1	0.26
OR-150	575	385	85	140	175	1 1/4″	1″	150	19	0.5
OR-250	780	585	85	140	175	1 1/4″	1″	250	24	0.7
OR-350	1180	990	85	140	175	1 1/4″	1″	350	32.5	1.1
OR-600	1175	950	90	165	200	2″	1 1/4″	600	40	2.3
OR-800	1700	1490	90	165	200	2″	1 1/4″	800	54	3.5
OR-1000	2140	1890	90	165	200	2″	1 1/4″	1000	62	4.3
OR-1200	2530	2270	90	165	200	2″	1 1/4″	1200	72	5.1

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 use the coolers.。
The current product range includes：
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 dissipation is best.
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 Qing-type cooler
4.DT oil cooler is a tooth-type cooling tube formed by rolling, get out of the tooth surface, heat larger
1、Heat exchange capacity Q
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, marked as used in the calculation in Table A
Q=（T1-T2）*60*O.85*0.45*WS=(t2-t1)*60*1*1*Wt
2、Cooling water outlet temperature t2 (℃)
Relative to the cooling water outlet temperature of the cooling water flow rate of oil: the 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 of
t2 = Q/60 * WT + t1 (℃).
3、The 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
Do dynamic oil T1 → T2
Cooling water t2 → t1
△ t1 = T1-t2, △ t2 = T2-t1
By the type △ t1 and △ 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。
Note: The correction factor of demand and capacity from temperature efficiency ratio, as shown in Table C.
4、 Heat transfer area A
A=Q/（△tm*K）。
5、All in all heat transfer coefficient K
K values depending on the cooling water 'hydraulic oil viscosity varies, usually K = 200 ~ 650Kcal / m□ ℃ * h, KOMPASS multi-tube cooler, K = 350 ~ 500Kcal / m□ ℃ * 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 power W (KW) * 860
(Kcal / hr * KW) to exchange the necessary heat Q (Kcal / hr) = Ex & prop ; α:
Heat exchange coefficient
general machinery without heat by taking 0.4 ~ 0.6
plastic machinery, die-casting machinery, there are those who take the heat source of 0.6 ~ 0.8.