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BOSCH REXROTH
0811104125

  • BOSCH REXROTH
  • Material:0811104125
  • Model:DZT-XA2-1X/60L

Due to extremely high demand, please call 877-366-7226 for availability

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth DZT-XA2-1X/60 (0811104125) is a high-quality pressure relief valve designed for precise control and safety in hydraulic systems. This direct operated valve, belonging to the DBT series, is engineered for subplate mounting and is suitable for incorporation into control panel designs. It functions as a pilot control valve, making it ideal for managing larger flow rates indirectly. The robust construction of the valve includes a durable housing (1), a responsive valve poppet (2), and a secure valve seat (3). The interaction between these components ensures reliable operation; in its default state, the poppet remains seated, effectively sealing off the connection between the pressure (P) and tank (T) ports to maintain system integrity. The manual setting of this model is facilitated through an adjustment type (4), allowing operators to precisely set the desired system pressure. When in operation, if the hydraulic force reaches the threshold set by this adjustment mechanism, the valve activates to maintain pressure at the predetermined level. The excess fluid is then diverted from P to T as the poppet lifts away from its seat, preventing potential damage due to overpressure. One of the key features of this Bosch model is its minimum pressure capability; even with a completely unloaded spring (5), it can maintain a minimum pressure of 3 bar due to spring preload force. This ensures that some level of system pressure is always maintained for operational stability. Designed primarily as pilot control valves, these units are integral in facilitating indirect control over larger flows within hydraulic systems. Their reliability and precision make them valuable components in various applications where accurate pressure relief is critical for both performance and safety.

Pressure relief valves of type DBT are remote control valves with seat design and are used for limiting a system pressure.

The setting is completed manually, via the adjustment type (4).

The valves basically consist of the housing (1), the valve poppet (2) and the related valve seat (3).

In the unloaded position, the valve poppet (2) pushes onto the valve seat (3) and blocks the connection between P and T connection.

If the hydraulic force equals the force set at the adjustment type (4), the valve controls the set pressure.

By lifting off the valve poppet (2) from the valve seat (3), the excessive hydraulic fluid may flow off from P to T.

With completely unloaded spring (5), the minimum pressure of 3 bar (spring preload force) will settle.

These valves are basically used as pilot control valves for the indirect control of larger flows.

Type DBT-XP2-1X

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

Ordering code, symbols

Type

Part number

Examples of application

Symbols

DBT–G1–1X/160

0 811 104 007

For control panel

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design 		technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

 

DBT–G1–1X/315

 

0 811 104 013

DBT–G7–1X/160

0 811 104 021

 

DBT–XP8–1X/160

0 811 104 100

Sandwich plate for subplate mounting

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

DBT–XP8–1X/315

0 811 104 101

DBT–XP2–1X/160

0 811 104 102

DBT–XP2–1X/315

0 811 104 103

DBT–XP7–1X/160

0 811 104 104

DBT–XP7–1X/315

0 811 104 105

DBT–XP3–1X/160

0 811 104 106

DBT–XP3–1X/315

0 811 104 107

DBT–XP1–1X/160

0 811 104 108

DBT–XP1–1X/315

0 811 104 109

ZDBT–XP8–1X/160

0 811 104 110

Sandwich plate for subplate mounting

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

 

ZDBT–XP8–1X/315

0 811 104 111

 

ZDBT–XP2–1X/160

0 811 104 112

ZDBT–XP2–1X/315

0 811 104 113

ZDBT–XP7–1X/160

0 811 104 114

ZDBT–XP7–1X/315

0 811 104 115

ZDBT–XP3–1X/160

0 811 104 116

ZDBT–XP3–1X/315

0 811 104 117

 

ZDBT–XA8–1X/160

0 811 104 118

For subplate mounting

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design 		technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

ZDBT–XA8–1X/315

0 811 104 119

ZDBT–XA2–1X/160

0 811 104 120

ZDBT–XA2–1X/315

0 811 104 121

DZT–XB2–1X/315

0 811 104 123

Pressure switch valve for subplate mounting

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design 		technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

 

DZT–XB2–1X/60

0 811 104 124

 

DZT–XA2–1X/60

0 811 104 125

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

DZT–XA2–1X/160

0 811 104 126

DZT–XA2–1X/315

0 811 104 127

general

Size

6

Weight

kg

2

Installation position

any

Ambient temperature range

°C

-20 … +70

Storage temperature range

°C

-20 … +80

hydraulic (measured with HLP 46; ϑ Oil = 40 °C ±5 °C, ν = 35 mm2/s)

Size

6

Maximum operating pressure

Port P

bar

350

Maximum set pressure

Pressure rating 60 bar 1)

bar

60

Pressure rating 16 bar

bar

160

Pressure rating 315 bar

bar

315

Pressure rating 350 bar

bar

350

Minimum set pressure

bar

3

Return flow

Port T

separate and depressurized to the tank

Maximum flow

l/min

3

Hydraulic fluid

Mineral oil (HL, HLP) according to DIN 51524, other hydraulic fluids on request

Hydraulic fluid temperature range

°C

-20 … +80

Viscosity range

mm²/s

15 … 380

Maximum admissible degree of contamination of the hydraulic fluid 2)

Class 20/18/15 according to ISO 4406 (c)

Hysteresis (deviation from the max. set pressure)

%

< 5

Pilot oil volume (Vx) (only pressure switch valves)

cm³

0.5
1) only possible with type DZT
2) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

For applications outside these parameters, please consult us!

Δp = f (qV)

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

(measured with HLP46, ϑOil = 40 ±5 °C), ν = 35 mm2/s)

Type DBT-G1-1X/...

Dimensions in mm

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

1

Hand wheel

2

Rotary knob

3

Valve mounting bores

4

Pressure gauge connection

5

Lock nut

Valve mounting screws (separate order)

4 hexagon socket head cap screws M6,

screw length as required

Type DBT-X... Type ZDBT-X...

Dimensions in mm

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

1

Name plate or 2nd flange surface

2

Adjustment type

3

Lock nut

4

Valve mounting bores

5

O-rings Ø9.25 x 1.78 mm (ports P, T)

6

Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05

Subplates see data sheet 45052

Valve mounting screws (separate order)

type DBT

4 hexagon socket head cap screws ISO 4762-M5x50-10.9-flZn-240h-L

(friction coefficient μtotal = 0.09 – 0.14);

tightening torque MA = 7 Nm ±10 %

or

4 hexagon socket head cap screws ISO  4762-M5x50-10.9

(friction coefficient μtotal = 0.12 – 0.17);

tightening torque MA = 8.9 Nm ± 10%

type ZDBT

4 hexagon socket head cap screws ISO 4762-M5-10.9-flZn-240h-L

(friction coefficient μtotal = 0.09 – 0.14);

tightening torque MA = 7 Nm ±10 %

or

4 hexagon socket head cap screws ISO 4762-M5-10.9

(friction coefficient μtotal = 0.12 – 0.17);

tightening torque MA = 8.9 Nm ± 10%

Screw length as required

Type DZT-X...

Dimensions in mm

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design

1

Name plate

2

Adjustment element

3

Lock nut

4

Valve mounting bores

5

Pressure gauge connection for pilot pressure X, G1/4

6

Pressure gauge connection for system pressure A, G1/4

7

O-rings Ø10 x 1.5 mm (ports P, A, B, T)

8

Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05

Subplates see data sheet 45052

Valve mounting screws (separate order)

4 hexagon socket head cap screws ISO 4762-M5x50-10.9-flZn-240h-L

(friction coefficient μtotal = 0.09 –0,14);

tightening torque MA =  7 Nm ± 10%

or

4 hexagon socket head cap screws ISO 4762-M5x50-10.9

(friction coefficient μtotal = 0.12 – 0.17);

tightening torque MA = 8.9 Nm ± 10%

Screw length as required

Examples of application

technical illustration-0811104125-Direct operated valves for limiting a system pressure Use as pilot control valve For subplate mounting and control panel design