Bosch Rexroth

Diaphragm Type Accumulators

Diaphragm type accumulators are used for energy storage, shock and vibration absorption and leakage oil or volume compensation in hydraulic systems. They consist of a pressure-resistant tank (high-tensile steel) whose interior is split into a gas and a fluid side by an elastic diaphragm. When the operating pressure is increased, hydraulic fluid flows into the accumulator and compresses the gas until the gas pressure is identical to the fluid pressure. When the operating pressure is reduced, the gas expands again and, in this way, feeds the hydraulic system with hydraulic fluid.

Part Number
Size (cu. in.)
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Max. Pressure
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Oil Port Connection
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Dimensions (in.) A
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Dimensions (in.) B
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Wt. (lbs.)
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0-531-601-549
21 cu. in.
2500 psi
SAE 8
6.02
3.62
3.30
0-531-601-533
21 cu. in.
2500 psi
1/2” NPT
6.02
3.62
3.30
0-531-602-560
43 cu. in.
2610 psi
SAE 8
7.20
4.76
6.60
0-531-602-581
43 cu. in.
2610 psi
1/2” NPT
7.20
4.76
6.60
0-531-603-501
85 cu. in.
3000 psi
SAE 8
8.70
6.10
13.00
0-531-603-500
85 cu. in.
3000 psi
1/2” NPT
8.70
6.10
13.00
0-531-613-503
170 cu. in
3000 psi
SAE 8
11.5
6.85
21.30
Part Number
Type
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Use With
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1-531-316-015
Clamp
43 cu. in.
1-531-316-016
Clamp
85 cu. in.
VMB-45
Clamp
1/4 gal
VMB-66
Clamp
1 gal
VMB-89
Clamp
2-1/2 – 10 gal
VMB-47R
Base
1 gal
VMB-67R
Base
2-1/2 – 10 gal

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