
Product Description
Main Features
• Cast iron covers for high performances
• High pressure option: up to 280 bar max. continuous pressure
• Axial compensation achieved using pressure balanced bushing blocks.
• High volumetric efficiency: average 95-97%
• Wide range of capacities : 20-25-30-35-40- 45-50-55-60-64-70-80-90 cm3/rev.
• Extruded aluminium body
• Gear tooth profile accurately projected providing low noise operation.
• A wide variety of shafts, flanges and ports are available to meet specific application
requirements.
• High-temperature seals available.
• Single rotational pumps and motors.
• Bi-rotational pumps and motors.
• Multiple pumps availability: tandem pumps are possible both in aluminium series and
with other cast iron series produced by Ronzio Oleodinamica
• Easy-to-make tandem pumps and easy change of rotation.
Product Parameters
|
20 |
25 |
30 |
35 |
40 |
45 |
50 |
55 |
60 |
64 |
70 |
80 |
90 |
CAPACITY |
19.9 |
24.9 |
29.9 |
34.3 |
40.5 |
45.2 |
49.9 |
54.5 |
60 |
63.9 |
70 |
78.7 |
89.6 |
cm3/giro at 1000 (giri/min) |
DELIVERY |
29.9 |
37.4 |
44.9 |
51.5 |
60.8 |
67.8 |
74.9 |
81.8 |
90 |
95.9 |
105 |
118 |
134.4 |
lt/min at 1500 (giri/min) |
A (mm) |
100.8 |
104 |
107.2 |
110 |
114 |
117 |
120 |
123 |
126.5 |
129 |
132.9 |
138.6 |
145.6 |
B (mm) |
38.5 |
40 |
41.6 |
43 |
45 |
46.5 |
48 |
49.5 |
51 |
52.5 |
54.5 |
57.3 |
60.8 |
Max working pressure (bar) |
280 |
280 |
280 |
280 |
250 |
250 |
230 |
230 |
200 |
200 |
170 |
170 |
160 |
Max peak pressure (bar) |
310 |
310 |
310 |
310 |
280 |
280 |
250 |
250 |
220 |
220 |
190 |
190 |
180 |
Max speed for P1 pressure (Rpm) |
450 |
450 |
350 |
350 |
350 |
350 |
350 |
350 |
350 |
350 |
350 |
350 |
350 |
speed without load (Rpm) |
3000 |
3000 |
3000 |
3000 |
2700 |
2700 |
2200 |
2200 |
2000 |
2000 |
1800 |
1800 |
1800 |
Coppia resa (Nm) |
26.9 |
33.7 |
40.4 |
464 |
548 |
61.1 |
67.5 |
73.7 |
81.2 |
86.4 |
947 |
106.5 |
121.2 |
Mass (Kg) |
10.6 |
10.8 |
11 |
11.2 |
11.4 |
11.5 |
11.7 |
11.9 |
12 |
12.2 |
12.4 |
12.7 |
13.1 |
Detailed Photos

Hebei Ding'an Hydraulic Machinery Co., Ltd. is a professional company integrating the research, production and sales of hydraulic valves. It is an ISO9001:2000 quality management system certified enterprise. The company currently has fixed assets of more than 10 million yuan, covers an area of 16,000 square meters, has strong technical force, and has more than ten years of experience in the development and production of hydraulic valves. It can quickly and high-quality develop various mining and engineering machinery hydraulic valves according to customer requirements. |


