Hawe RZ23/3 -45x Pump

D 6910 page 3
2.2
Pump combinations direct from HAWE The HP-pumps acc. to sect. 2.1 RZ.... /1 to RZ... /3 are combined with gear pumps. Combinations with gear pumps of other brands
have to be customer furnished (sect. 2.1).
Order example:
Symbol
RZ 8,3/3 - 59
Coding high pressure section from sect. 2.1
RZ 0,18/1to
RZ 2,27/1-
1)
The actual permissible pressure pLP may be lower, depending on the application. Observe the
max. drive power rating of the shaft, see sect. 4.
It is advisable for an economic bearing service life to restrict the middled operating pressure of subsequent load
cycles (e.g. accumulator charging) down to 50 to 60% of p1.
RZ 0,3/2to
RZ 91,2/2-
RZ 0,9/3to
RZ 91,2/3-
2.3
Delivery flow coding (guide line value QHP in lpm at 1450 rpm) second figure
represents the geometric displacement in cm3/rev.
Permissible pressure pLP max 1) in (bar) when mounted to a HP-pump of the
specified design (see also sect. 2.1)
7631 6910
6911 6912
6914 6916
2,0
(1,4)
180
2,7
(1,9)
180
3,5
(2,4)
180
4,5
(3,1)
170
5,2
(3,6)
150
6,9
(4,8)
110
8,8
(6,1)
90
9,8
(7)
80
11,3
(7,9)
70
9,0
(6,0)
200
200
200
12,3
(8,5)
130
200
200
16
(11)
100
200
200
21
(14,5)
80
180
180
24
(17)
70
150
180
28
(19,5)
60
130
160
37
(26)
45
100
140
45
(30,2)
120
210
59
(41,8)
90
180
75
(50,4)
70
160
87
(61)
60
150
110
(72)
50
120
135
(87,8)
40
90
Additional parameter Nomenclature
Dual stage pump, two constant delivery flows
Design
Combination of valve controlled radial piston pump and directly mounted, play compensated gear
pump
Fastening
At the facial side of the HP-pump via 4 tapped holes, see sect. 6 ++.
Drive and direction of rotation Only via flex-coupling, e.g. acc. to sect. 2.3 in D 6010 Z;
A rotation direction is not specified for HP-pumps without gear pump, but combinations of HP- and
LP-pump (acc, to sect. 2.2) must rotate counter clockwise when facing the drive shaft
Drive speed
Nom. speed rating 1450 rpm; perm. range 500 ... 2000 rpm
Unit dimensions
see dimensional drawings 6.1 (HP-pumps) and 6.2 (LP-pumps)
Installed position
Lateral or vertical, observe notes in sect. 6.2 !
Pressure
Pressure outlet:
Suction side:
Perm. pressure HP-pump only
Perm pressure ratings acc. to sect. 2.1 and 2.2 The fluid should enter the pump with ambient pressure, see also notes for installation in sect. 5.1 and 5.2
psuction = 1 bar (2 bar abs.) psuction = 3 bar (version RZ..A/..); For details see D 6010, sect. 5.2
Hydraulic fluid:
Hydraulic oil acc. to DIN 51524 table 1 to 3; ISO VG 10 to 68 acc. to DIN 51 519)
Viscosity range: min. approx. 4; max. approx. 1500 mm2/sec (design 6910 ..6916)
min. approx. 4; max. approx. 800 mm2/sec (design 7631)
Optimum service: approx. 10 … 500 mm2/sec Also suitable are biologically degradable pressure fluids type HEPG (Polyalkylenglykol) and HEES
(synth. Ester) at operation temperatures up to approx. +70°C.
Temperature:
Ambient: approx. -40...+80°C; Fluid: -25...+80°C, pay attention to the viscosity range!
Start temperature down to -40°C are allowable (Pay attention to the viscosity range during start!),
as long as the operation temperature during subsequent running is at least 20K (Kelvin) higher.
Biological degradable pressure fluids: Pay attention to manufacturer‘s information. With regard to
the compatibility with sealing materials do not exceed +70°C.