Bosch Rexroth | SCA16AZ2XM
SCA16AZ2X/M
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The SCA16AZ2X/M valve belongs to the Hy-Check Valves series from Bosch Rexroth and is intended to block reverse flow in hydraulic automation circuits. It is configured for operation on line A and is supplied in nominal size 16, making it compatible with manifolds that use the ISO 4401 mounting interface. Six fixing holes secure the body to a subplate for rigid installation, and the installation position is optional so the unit can be fitted in any orientation. The housing weighs 6.0 kg, aiding manual handling during service. Seal integrity on the main service ports A2, B2, P2, and T2 is maintained by R-rings measuring 22.53 × 2.3 × 2.62 mm, while pilot and drain passages X2, Y2, and L2 use rings sized 10 × 2.0 × 2.0 mm.
The valve passes up to 130 L/min without excessive pressure loss, and ports A and B tolerate 315 bar, the same limit applied to pilot port X, whereas port Y is rated for 30 bar to safeguard the return line. Pilot oil released to tank is restricted to 1.8 L/min, which governs the opening response. Approved hydraulic fluids are mineral oil grades HL or HLP, provided viscosity stays between 15 and 380 mm²/s. Reliable service is maintained across a fluid temperature range of −20 °C to +70 °C, allowing operation in cold starts or elevated ambient conditions.
Technical Specifications
Fixing Holes
6
Fluid Temperature Range
-20 to +70 °C
Hydraulic Fluid
Mineral Oil (HL, HLP)
Installation Position
Optional
Max Flow
130 L/min
Max Port A/b Pressure
315 bar
Max Port X Pressure
315 bar
Max Port Y Pressure
30 bar
Mounting Interface
ISO 4401
Nominal Size
16
Operation Line
A
Pilot Oil Volume To Tank
1.8 L/min
R-ring Ports A2/b2/p2/t2
22.53 x 2.3 x 2.62 mm
R-ring Ports X2/y2/l2
10 x 2.0 x 2.0 mm
Viscosity Range
15 to 380 mm2/s
Weight
6.0 kg
1620 Old Apex Road
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