HAD0,35-207-1X/83U04A-2N111-USA

Manufacturer: Bosch Rexroth

Material #: R978715803

Model : HAD0,35-207-1X/83U04A-2N111-USA

***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 HAD035-207-1X/83U04A-2N111-USA (R978715803) is a high-quality diaphragm-type hydraulic accumulator designed for efficient energy storage and management within hydraulic systems. It serves as a critical component for accepting and returning pressurized fluids as required by the system, thus acting as an energy reserve. The accumulator's design adheres to the Pressure Equipment Directive EC, ensuring safety and compliance with international standards. This model features a durable steel vessel that is pressure-resistant, with a shape ranging from spherical to cylindrical. Inside, it houses an elastomer diaphragm that functions as a gastight separator element between the fluid and gas sections. The flexibility of the diaphragm allows it to accommodate changes in pressure: during an increase in pressure, the gas compresses while the liquid is accepted into the accumulator; conversely, when pressure decreases, the gas expands and pushes the accumulated fluid back into the circuit. The HAD035-207-1X/83U04A-2N111-USA is equipped with essential components such as a closing button and plug screw for gas filling, ensuring easy maintenance and operation. Its fluid connection allows seamless integration into various hydraulic circuits. With its nominal capacity and maximum operating pressure capabilities, this Bosch Rexroth accumulator is engineered to meet demanding applications where reliable energy storage is crucial. Overall, this model offers robust performance for systems requiring precise control over fluid dynamics by mitigating fluctuations and providing additional fluid volume when needed. It's an indispensable part of modern hydraulic systems where efficiency and reliability are paramount.

$346.00 USD

More are expected on August 4, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as August 4, 2025 when ordered in

Hydraulic accumulator as per Pressure Equipment Directive 97/23/EC Diaphragm material for different applications

Function, section, symbol

General information

One of the main tasks of hydraulic accumulators is e.g. to accept certain volumes of pressurized liquids of a hydraulic system and to return them to the system if required.

As the liquid is pressurized, the hydraulic accumulators are treated like pressure vessel and must be designed for the max. operating overpressure considering the acceptance standards of the country of installation.

In most hydraulic systems, hydro-pneumatic (gas-charged) accumulators with separator element are used.

The difference between bladder, piston and diaphragm type accumulators lies in the type of separator element.

Hydraulic accumulators essentially consist of a fluid section and a gas section with a gas-tight separator element. The fluid section has a connection to the hydraulic circuit. During the pressure increase, the gas is compressed and liquid accepted in the hydraulic accumulator. When the pressure decreases, the compressed gas expands and displaces the accumulated fluid into the circuit.

Diaphragm type accumulator

Diaphragm type accumulators consist of a pressure-resistant steel vessel (1) which most commonly has a spherical to cylindrical form. Inside the accumulator, there is the separator element, namely a diaphragm (2) made of an elastic, flexible material (elastomer) with the closing button (3) and the plug screw (4). They correspond to directive 97/23/EC.

Symbol

1	Containers
2	Diaphragm
3	Closing button
4	Plug screw (gas filling screw)
5	Fluid connection

Ordering code

01	02		03		04		05	06	07		08	09	10	11	12		13		14
HAD		-		-		/				-			1			-		-

Device designation
01	Diaphragm type accumulators	HAD
Nominal capacity
02	See selection table	…
Maximum operating pressure
03	See selection table	…
Component series
04	Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions)	1X
04	Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions)	2X
Preload pressure
05	0 to 250 bar; e.g. 10 bar	10
Port size for hydraulic fluid 1)
06	M14 x 1,5	Z04
	M18 x 1,5	Z06
	M22 x 1.5	Z08
	G1/4	G02
	G3/8	G03
	G1/2	G04
	G3/4	G05
		G06
	3/4-16 UNF	U04
	1 1/16-12 UNF	U06
	3/8 NPTF	F02
	1/2-14 NPTF	F08
Type of mounting (oil port form)
07	Mounting cavity	A
	Mounting cavity with external hexagon	C
	Screw-in stud with internal thread	E
	Screw-in stud	F
	Screw-in stud M45 x 1.5 with internal thread	E5
	Special versions on request
Gas port form
08	Standard version for 0 538 103 012	1
	Gas valve for 0 538 103 011	2
	cannot be refilled, welded on the gas side	4
Bladder material
09	NBR	N
	ECO	E
	IIR	I
	FKM	F
Tank material
10	Steel	1
Surface of the tank inside
11	Steel	1
11	Galvanized steel	2
Surface of the connection side
12	Steel	1
12	Galvanized steel	2
Certification acceptance
13	Acceptance according to 97/23/EC	CE
13	Instructions for use	BA
14	Further details in the plain text e. g. SO variant	*

1)	Other versions available upon request.

Selection table

Nominal capacity	Maximum operating pressure	Component series	Certification acceptance
l	bar	Component series	Certification acceptance
0,075	250	1X	BA
0,16	250	1X	BA
0,35	210	1X	BA
0,5	160	1X	BA
0,5	250	2X	BA
0,7	100	1X	BA
	180	1X
	250	1X
	350	2X
1	200	1X	BA
1,4	140	1X	CE
	250	1X
	350	2X
2	100	1X	CE
	250	1X
	350	2X
2,8	70	1X	CE
	250	1X
	350	1X
3,5	250	1X	CE
3,5	350	1X	CE

general

Nominal capacity	l	0.075	0.16	0.35	0.5	0.7	1	1.4	2	2.8	3.5
Weight	kg	0.65	1	1.3	1.6	2.6	3.5	4.9	4	5.5	14
Weight	kg	-	-	-	2	3.2	-	6.2	9.5	10	-
Design		Diaphragm type accumulator, welded
Installation position		Any, preferably with the fluid connection socket at the bottom
Mounting type		with clamps or via stud end connectors
Ambient temperature range 1)	°C	-15 … +65
Line connection		Screw-in thread

1)	The admissible temperature range specified in the tank test is also decisive

hydraulic

Nominal capacity	VNenn	l	0.075	0.16	0.35	0.5	0.7	1	1.4	2	2.8	3.5
Effective gas volume	Veff	l	0.075	0.16	0.32	0.48	0.75	1	1.4	1.95	2.7	3.5
Maximum flow	qmax	l/min	10	10	40	40	40	40	40	60	60	60
Maximum operating pressure	pmax	bar	-	-	-	-	100	-	-	-	70	-
		bar	-	-	210	160	180	-	140	100	-	-
		bar	250	250	207	207	250	200	250	250	250	250
		bar	-	-	-	250	350	-	350	350	350	350
Maximum admissible pressure fluctuation range	Δpdyn	bar	-	-	-	-	93	-	-	-	-	-
		bar	-	-	90	90	93	-	80	65	-	-
		bar	150	120	120	120	140	115	140	140	130	130
		bar	-	-	-	100	130	-	130	130	130	130
Hydraulic fluid 1)			Hydraulic oil according to DIN 51524
Hydraulic fluid temperature range	NBR	°C	-10 … +80 1) 2)
Hydraulic fluid temperature range	ECO	°C	-35 … +80

1)	Other hydraulic fluids upon request.
2)	The admissible temperature range specified in the tank test is also decisive

pneumatic

Charging gas	use only nitrogen!

Usable hydraulic fluids

When selecting the accumulator design, you have to observe the following, unbinding information with regard to hydraulic fluid, bladder and/or diaphragm material and admissible temperature range.

Warranty claims cannot be derived from these recommendations. For other hydraulic fluids and temperatures, please contact us.

Hydraulic fluids	Temperature range	Material
Mineral oils	-10 … +80 °C	NBR
Mineral oils	-35 … +80 °C	ECO
HFA, HFB 1)	+5 … +50 °C	NBR
HFC	-10 … +60 °C	NBR, IIR
HFD 2)	-10 … +60 °C	IIR
HFD 2)	-10 … +80 °C	FKM
Water 1)	+5 … +50 °C	NBR
Diesel, heating fuel	-10 … +50 °C	NBR
Heavy heating fuel	-10 … +100 °C	FKM
Regular gasoline	-10 … +40 °C	NBR
Premium gasoline	-10 … +40 °C	FKM
Kerosene	-10 … +40 °C	NBR

1)	Possible special version for vessel and connection parts
2)	Consultation with exact specification of the hydraulic fluid

	NBR ‒ Acrylonitrile-butadiene rubber (Perbunan)
	FKM ‒ Fluorocarbon rubber
	IIR ‒ Butyl rubber
	ECO ‒ Epichlorhydrin rubber

For applications outside these parameters, please consult us!

Calculation

Pressures

For the calculation of an accumulator, the following pressures are of significance:

p0 = gas precharge pressure (at room temperature and drained fluid chamber)

p0(t) = gas precharge pressure (at operating temperature)

p1 = minimum operating pressure

p2 = maximum operating pressure

(pm = average operating pressure)

To achieve the best possible utilization of the accumulator capacity and a long service life, it is recommended that the following values be adhered to:

p0, tmax ≈ 0,9 p1 (1)

The highest hydraulic pressure should not exceed the quadruple of the precharge pressure; otherwise, the elasticity of the diaphragm is overstressed and excessive variations in the compression result in strong heating up of the gas.

The smaller the difference between p1 and p2 the longer is the service life of the diaphragm. However, this also reduces the degree of utilization of the corresponding maximum accumulator capacity.

Diaphragm-type accumulators

p2 ≤ 4 • p0 (2)

On request

p2 ≤ 8 • p0

Note!

Filling piece in diaphragm-type accumulators

To achieve an increased pressure ratio (p0:p2 > 1:4) in the accumulator, a filling piece can be installed on the gas side of the accumulator.

This reduces the usable gas volume V1, but the diaphragm is protected against impermissible deformation.

Oil volume

Pressures p0 … p2 determine gas volumes V0 … V2.

Here, V0 is also the nominal capacity of the accumulator.

The available oil volume V corresponds to the difference beween gas volumes V1 and V2:

ΔV ≤ V1 - V2 (3)

The gas volume, which is variable within a pressure differential, is determined by the following equations:

a) In the case of isothermal changes of state of gases, that is, when the gas buffer changes so slowly that enough time is available for a complete heat exchange between the nitrogen and its surroundings and the temperature therefore remains constant, the following is valid:

p0 • V0 = p1 • V1 = p2 • V2 (4.1)

b) In the case of an adiabatic change of state, that is, with a rapid change of the gas buffer, in which the temperature of the nitrogen changes as well, the following is valid

p0 • Vχ0 = p1 • Vχ1 = p2 • Vχ2 (4.2)

χ = ratio of the specific heat of gases (adiabatic exponent), for nitrogen = 1.4

In practice, changes in state rather follow adiabatic laws. Charging is often isothermal, discharging adiabatic.

Taking account of equations (1) and (2), ΔV is 50 % to 70 % of the nominal accumulator capacity. The following can be applied as a rule of thumb:

V0 = 1.5 … 3 x ΔV

Calculation diagram

To allow a determination on the basis of a graphic representation, the formulas (4.1) and (4.2) were translated into diagrams. Depending on the task at hand, the available oil volume, the accumulator size or the pressures can be established.

Correction factors Ki and Ka

Equations (4.1) and (4.2) are only valid for ideal gases. In the characteristics of real gases, significant deviations can be observed at operating pressures above 200 bar, which must be taken into account by applying correction factors. These are shown on the following diagrams. The correction factors which are to be multiplied by the ideal withdrawal volume ΔV are within the range of 0.6 … 1.

Application of the calculation diagrams

Adiabatic ΔVreal = ΔVideal x Ka

Isothermal state changes p0 = 1 … 90 bar

Isothermal state changes p0 = 100 … 300 bar

Adiabatic state changes p0 = 1 … 90 bar

Adiabatic state changes p0 = 100 … 300 bar

Application, mode of operation

Applications

Various applications exist for hydro-pneumatic accumulators:

Energy storage in order to save pump drive power in intermittent operation systems. Energy reserve for emergencies, e.g. upon failure of the hydraulic pump. Compensation of leakage losses. Impact and vibration absorption in case of periodic vibrations. Volume compensation in case of pressure and temperature changes. Suspension element for vehicles. Shock absorption with mechanical shocks.

Mode of operation

Fluids are almost incompressible and therefore cannot store pressure energy. Hydro-pneumatic Rexroth accumulators use the compressibility of a gas for fluid storage. Only neutral gases may be used. Usually “nitrogen” class 4.0.

N2 99.99 vol. %

O2 50 vpm

H2O approx. 30 vpm.

Dimensions: 70 … 250 bar

Dimensions in mm

1	Gas port form „1“
2	Lettering

Type	Volume	Ød	h	L	M	N	Mass
Type	l	mm	mm	mm	mm	mm	kg
HAD0,075	0.075	64	91	20	21.5	12	0.65
HAD0,16	0.16	75	99.5	20	24	12	1
HAD0,35	0.35	92	114	22	33	18	1.3
HAD0,5	0.5	103	127	22	-	-	1.6
HAD0,5	0.5	106	130	20	27	12	2
HAD0,7	0.7	121	144	22	33	18	2.6
HAD0,7	0.7	123.6	144	22	33	18	3.2
HAD1,0	1	136	158	22	33	18	3.5
HAD1,4	1.4	147	169	22	33	18	4.9
HAD1,4	1.4	152	173	22	33	18	6.2
HAD2,0	2	144	218	22	33	18	4
HAD2,0	2	155	229	22	33	18	9.5
HAD2,8	2.8	160	247	21	33	18	5.5
HAD2,8	2.8	174	247	21	33	18	10
HAD3,5	3.5	174	285	21	33	18	14

Dimensions of standard types: 160 … 250 bar; 0,075 … 0,5 l

Dimensions in mm

Ordering code/type	Volume	Part number	Ød	h	k
Ordering code/type	l		mm	mm
HAD0,075-250-1X/2Z04F-1N111-BA	0.075	R901183242	65.5	112.5	M14 x 1,5
HAD0,16-250-1X/2Z06F-1N111-BA	0.16	R901183248	76.5	123.5	M18 x 1,5

Dimensions in mm

Ordering code/type	Volume	Part number	Ød	h	k
Ordering code/type	l		mm	mm
HAD0,35-210-1X/2Z06C-1N111-BA	0.35	R901183250	94.3	136	M18 x 1,5
HAD0,5-160-1X/2Z06C-1N111-BA	0.5	R901183251	104.8	149	M18 x 1,5
HAD0,5-250-2X/2Z06C-1N111-BA	0.5	R901183253	108.5	152	M18 x 1,5

Dimensions of standard types: 100 … 250 bar; 0,7 … 1,4 l

Dimensions in mm

Ordering code/type	Volume	Part number	Ød	h	k
Ordering code/type	l		mm	mm
HAD0,7-100-1X/2G04E-1N111-BA	0.7	R901164364	118.8	172	G1/2
HAD0,7-210-1X/2G04E-1N111-BA	0.7	R901164365	123.5	177	G1/2
HAD1,0-200-1X/2G04E-1N111-BA	1	R901164367	138.5	191	G1/2
HAD1,4-140-1X/2G04E-1N111-CE	1.4	R901164368	149.6	202	G1/2
HAD1,4-250-1X/2G04E-1N111-CE	1.4	R901164369	152	206	G1/2

Dimensions of standard types: 100 … 250 bar; 2 … 3,5 l

Dimensions in mm

Ordering code/type	Volume	Part number	Ød	h	k
Ordering code/type	l		mm	mm
HAD2,0-100-1X/2G05E5-1N111-CE	2	R901164371	147.2	258	G3/4
HAD2,0-250-1X/2G05E5-1N111-CE	2	R901164372	158.6	269	G3/4
HAD2,8-250-1X/2G05E5-1N111-CE	2.8	R901164374	177.5	286	G3/4
HAD3,5-250-1X/2G05E5-1N111-CE	3.5	R901164376	177.5	325	G3/4

Dimensions of US standard types: 207 … 250 bar; 0,075 … 0,35 l

Dimensions in mm

Ordering code/type	Volume	Part number	Ød	h	k
Ordering code/type	l		mm	mm
HAD0,075-250-1X/0U12C-2N111-USA	0.075	0531610632	65.5	125.8	9/16-18 UNF-2B
HAD0,16-250-1X/0U12C1-2N111-USA	0.16	0531600611	76.5	132.3	9/16-18 UNF-2B

Dimensions in mm

Ordering code/type	Volume	Part number	Ød	h	k
Ordering code/type	l		mm	mm
HAD0,35-207-1X/0U04A-2N111-USA	0.35	0531601572	96.5	150.5	3/4-16 UNF-2B

Dimensions in mm

Ordering code/type	Volume	Part number	Ød	h	k
Ordering code/type	l		mm	mm
HAD0,7-207-1X/0U04C-2N111-USA	0.7	0531602588	128.5	186	3/4-16 UNF-2B
HAD1,4-207-1X/0U04C-2N111-USA	1.4	0531603501	156.5	212.8	3/4-16 UNF-2B
HAD2,0-207-1X/0U04C-2N111-USA	2	0531623500	156.5	265.8	3/4-16 UNF-2B
HAD2,8-207-1X/0U04C-2N111-USA	2.8	0531613503	175.5	282.5	3/4-16 UNF-2B

Dimensions of standard types: 350 bar; 0,7 … 2 l

Dimensions in mm

Ordering code/type	Volume	Part number	Ød	h	k	Mass
Ordering code/type	l		mm	mm		kg
HAD0,7-350-2X/2G04E-1N111-BA	0.7	R901164366	128.5	184	E	4
HAD1,4-350-2X/2G04E-1N111-CE	1.4	R901164370	156	209	E	7
HAD2,0-350-2X/2G05E5-1N111-CE	2	R901164373	156	269	E5	9.5

Dimensions of standard types: 350 bar; 2,8 and 3,5 l

Dimensions in mm

Ordering code/type	Volume	Part number	Ød	h	Mass
Ordering code/type	l		mm	mm	kg
HAD2,8-350-1X/2G05E5-1N111-CE	2.8	R901164375	180	285	13
HAD3,5-350-1X/2G05E5-1N111-CE	3.5	R901164377	180	325	16

Commissioning, maintenance

Notice for commissioning

Charging pressure

Diaphragm accumulators are usually delivered in condition ready for operation. The charging pressure (p0) is engraved on the accumulator housing.

Charging gas

Hydraulic accumulators must only be filled with nitrogen of class 4.0, pure N2 content of 99.99 vol. %.

Admissible operating temperature

In “standard version”, Bosch Rexroth hydraulic accumulators are suitable for operating temperatures of –10 … +80 °C. Please contact us for deviating temperatures.

Installation position

Diaphragm accumulators may be installed in any installation position. Above the gas valve, an installation space of 200 mm must be provided for testing and charging devices.

Fastening

When mounting the accumulator, make sure that possible forces, such as the ones created by vibrations or acceleration specific for that application, are absorbed safely. When using several mounting points, avoid stress caused by operational, elastic deformations or temperature expansions.

Bosch Rexroth offers corresponding holding clamps (see “Accessories”).

Charging the accumulator

Use the Bosch Rexroth charging and test device to charge the accumulator (see “Accessories”). Refer to the information given in operating instructions 1 539 929 010 for details.

Notice

The pre-filling pressure will change with the gas temperature. After charging or draining nitrogen, wait with the check of the gas pressure until the temperature balance has been completed.

Maintenance

General information

After having been charged with gas, Bosch Rexroth accumulators are almost maintenance-free.

To guarantee a fault-free operation and a long life cycle, however, the following maintenance work must be carried out:

Inspection of the preset gas pressure Inspection of the safety equipment, fittings Inspection of the line connections Inspection of accumulator fixation.

Inspection of the gas filling pressure

Test intervals

After commissioning the accumulator, the charging pressure must be checked at least once in the first week. If no gas losses are detected, inspect for the second time after 3 months. If no pressure change could be determined again, annual inspections are sufficient.

Measurements on the fluid side

Connect pressure gauge via the line with the accumulator. Alternatively, connect the pressure gauge directly to the bleed port.

Procedure:

Fill the accumulator with hydraulic fluid. Close the shut-off device (5). Drain the hydraulic fluid slowly (temperature balance) by opening the safety valve (2). Observe the pressure gauge (3) during the draining process. As soon as the charging pressure has been reached in the accumulator, the pointer drops to zero abruptly.

If variations are measured, check whether:

pipelines, fittings are not leaking. Whether they can be attributed to different ambient or gas temperatures.

Only when no error can be determined at this point, the accumulator needs to be checked.

Adapter for size 20 blocks

Connection A (accumulator)

Accumulators	Block
D1	D2	ØD3	Part number
		mm
M22 x 1.5	M33 x 2	12	1 533 359 012
M18 x 1,5		8	1 533 359 013
G1/2 ISO 228		8	1 533 359 034

Holding clamps, selection table

Type	Clamp type	Part number
HAD0,075	HY/VGBKS 62– 65	1 551 316 024
HAD0,35	HY/VGBKS 92–97	1 531 316 017
HAD0,50	HY/VGBKS 101–111	1 531 316 018
HAD0,75	HY/VGBKS 119–128	1 531 316 015
HAD0,7	HY/VGBKS 128–136	R901073992
HAD1,0	HY/VGBKS 135–145	1 531 316 019
HAD1,4	HY/VGBKS 145–155	1 531 316 016
HAD2,0/100	HY/VGBKS 135–145	1 531 316 019
HAD2,0/250	HY/VGBKS 145–155	1 531 316 016
HAD2,8/70	HY/VGBKS 160–170	1 531 316 022
HAD2,8–3,5	HY/VGBKS 170–180	1 531 316 020

Charging and test device

Test case, complete		Part number
Bladder		0 538 103 011
Diaphragm		0 538 103 012
Bladder and diaphragm consisting of:		0 538 103 014
Case		R901070141
Charging and test valve	Bladder	0 538 103 005
	Diaphragm	0 538 103 006
Pressure gauge 0 … 250 bar		1 537 231 001
Hose l = 2,5 m with adapter piece form "D"		1 530 712 005

Accessory parts to be ordered separately	Part number
Pressure gauge 0 … 25 bar	R900033955
Pressure gauge 0 … 60 bar	1537231002
Pressure gauge 0 … 400 bar	1537231005
Adapter piece
Form "F"	1533391010
Form "GB"	1533391011
Form "USA"	1533391012
Form "KR"	1533391013
Form "J"	1533391014
Form "RUS"	1533391015
Hose l = 5 m with transition socket form “D”	1530712006

Dimensions of charging and test valve

1 valve body with check valve, discharge valve, pressure gauge connection, and gas hose connection.

1	Spare part, Material no. 1 537 410 065
2	Adapter see "Adapter from nitrogen bottle..."

Adapter for nitrogen bottle to cap nut
Dimensions in mm

Material no. 1533391010	Material no. R900216133	Material no. 1533391013
Material no. 1533391011	Material no. 1533391012	Material no. 1533391015

Adapter for nitrogen bottle to cap nut
Dimensions in inches

Material no. 1533391010	Material no. R900216133	Material no. 1533391013
Material no. 1533391011	Material no. 1533391012	Material no. 1533391015

Country	Part number
Country	1533391010	1533391011	1533391012	R900216133	1533391013	1533391015
Brazil		x
Bulgaria		x
France	x
Greece		x
Great Britain		x
India		x
Japan				x
Canada			x
Korea North					x
Korea South					x
Malaysia		x
Romania	x
Russia						x
Spain		x
Saudi Arabia	x
Singapore		x
Turkey		x
USA			x
Other countries on request.

Safety instructions for hydraulic accumulators

For hydraulic accumulators, the regulations applicable at the place of installation prior to commissioning and during operation have to be observed.

The machine end-user will have sole responsibility for complying with existing provisions.

General information for hydraulic accumulators in hydraulic systems can be found in EN 982.

Keep all documents included in the delivery in a safe place; they will be required by the expert in recurring tests.

Warning!

Do not perform welding and soldering or any other mechanical works at the accumulator tank!

Explosion hazard due to welding and soldering works! Danger of bursting and loss of the operating permit in case of mechanical processing!

Do not charge hydraulic accumulators with oxygen or air. Explosion hazard!

Before working at hydraulic systems, depressurize the system and secure it against restarting!

Improper assembly may result in serious accidents!

The accumulator may only be commissioned by qualified personnel.

Safety equipment

In the Federal Republic of Germany, equipment, place of installation and operation of hydraulic accumulators are regulated by the “Technical rules Pressure vessels” (TRB). They require the following safety equipment:

1 Equipment against excessive pressure (type-examination tested)

2 Discharge device

3 Pressure measurement device

4 Test pressure gauge connection

5 Shut-off device

Option:

6 Electro-magnetically operated discharge device

7 Safety equipment against excessive temperature

This safety equipment is combined in a compact Bosch Rexroth safety and shut-off block.

Legal provisions

Hydraulic accumulators are pressure vessels and subject to the application national provisions and/or regulations valid at the place of installation. In Germany, the Ordinance on Industrial Safety and Health (BetrSichV) applies.

Special regulations are to be observed in shipbuilding, aircraft construction, mining, etc.

Design, production and testing are effected according to the data sheets according to AD 2000. Installation, equipment and operation are regulated by the "Technical rules Pressure vessels" (TRB).

Tank classes and tests in Germany

According to this German ordinance, pressure vessels are classified into categories according to their content in l , the admissible operating overpressure in bar and the pressure content product p x l . Depending on the category, tests are prescribed.

The following table provides an overview:

Vessel class	Initial test at the manufacturer‘s end	Acceptance test at the operator‘s end	Recurring inspections
Vessel class	Initial test at the manufacturer‘s end	Acceptance test at the operator‘s end	Internal	Pressure	External
II p > 25 bar; p • L ≤ 200	◯	◯	◯	◯	◯
III p > 1 bar; p • L > 200 ≤ 1.000	X	X	◯	◯	◯
IV p > 1 bar; p • L > 1.000	X	X	X 51) / 102)	X 101)	X 21)

1)	Years
2)	Years with non-corroding fluids
	X by expert
	◯ by specialist

	Notice!
	All tank classes are to be secured by means of a pressure relief valve according to directive 97/23/EC.

HAD0,35-207-1X/83U04A-2N111-USA

Manufacturer: Bosch Rexroth

Material #: R978715803

Model : HAD0,35-207-1X/83U04A-2N111-USA

More are expected on August 4, 2025

Function, section, symbol

Symbol

Ordering code

Selection table

general

hydraulic

pneumatic

Usable hydraulic fluids

Calculation

Application of the calculation diagrams

Adiabatic ΔVreal = ΔVideal x Ka

Isothermal state changes p0 = 1 … 90 bar

Isothermal state changes p0 = 100 … 300 bar

Adiabatic state changes p0 = 1 … 90 bar

Adiabatic state changes p0 = 100 … 300 bar

Application, mode of operation

Dimensions: 70 … 250 bar

Dimensions of standard types: 160 … 250 bar; 0,075 … 0,5 l

Dimensions of standard types: 100 … 250 bar; 0,7 … 1,4 l

Dimensions of standard types: 100 … 250 bar; 2 … 3,5 l

Dimensions of US standard types: 207 … 250 bar; 0,075 … 0,35 l

Dimensions of standard types: 350 bar; 0,7 … 2 l

Dimensions of standard types: 350 bar; 2,8 and 3,5 l

Commissioning, maintenance

Adapter for size 20 blocks

Holding clamps, selection table

Charging and test device

Dimensions of charging and test valve

Adapter for nitrogen bottle to cap nut Dimensions in mm

Material no. 1533391010

Material no. R900216133

Material no. 1533391013

Material no. 1533391011

Material no. 1533391012

Material no. 1533391015

Adapter for nitrogen bottle to cap nut Dimensions in inches

Material no. 1533391010

Material no. R900216133

Material no. 1533391013

Material no. 1533391011

Material no. 1533391012

Material no. 1533391015

Safety instructions for hydraulic accumulators

Legal provisions

Related Products

Information

Account

Adapter for nitrogen bottle to cap nut
Dimensions in mm

Adapter for nitrogen bottle to cap nut
Dimensions in inches