Characteristic Curves; General Information - Bosch REXROTH DBD Technical Manual

Characteristic curves

(measured with HLP46, ϑ
p -q characteristic curve
E V
550
500
400
315
200
100
50
25
0
5
Flow in l/min
Notes:
The characteristic curves apply to output pressure = zero in the
entire volume flow range and were measured without housing
resistance.

General information

Hydraulic counter pressures in the main port ② (T) add
1:1 to the response pressure of the valve set at the
adjustment.
Example:
▶ Pressure adjustment of the valve due to spring preload
(item 4 on page 3) p
spring
▶ Hydraulic counter pressure in the main port ② (T):
p = 50 bar
hydraulic
⇒ Response pressure = p
= 40 ±5 °C)
oil
10 15
→
= 200 bar
+ p = 250 bar
spring hydraulic
∆p-q characteristic curve
V
60
50
40
30
20
10
0
20
Pressure relief valve | DBD
5 10 15
→
Flow in l/min
RD 25710, edition: 2016-07, Bosch Rexroth AG
5/12
20