AA2FM80/61W-VUDN510

The AA2FM80/61W-VUDN510 belongs to the A2FM Fixed Motors series from Bosch Rexroth and serves as a fixed displacement hydraulic motor for automated drive circuits. Its displacement of 79.8 cm³ per revolution establishes the fundamental flow-to-speed ratio when converting hydraulic energy into rotation. Bidirectional rotation lets designers run the shaft in either direction without mechanical changes, supporting reversible travel or winch functions. A nominal speed of 4500 rpm defines the continuous operating limit for stable performance, while an inlet flow requirement of 359 l/min at maximum speed helps size the upstream pump. The internal case volume of 0.65 l accommodates leakage oil, guiding the dimensioning of the case drain line. Installation is simplified by a SAE J744 four-hole flange that mates with common gearbox or frame patterns.

The motor tolerates short bursts up to 5000 rpm, enabling intermittent high-speed operation when extra output is needed. It delivers 508 Nm of torque at 400 bar and rises to 572 Nm at 450 bar, giving clear pressure-to-torque ratios for system calculations. FKM seals are used to resist elevated temperatures and standard hydraulic fluids, extending maintenance intervals. Working ports arranged in a rear SAE A/B layout keep hose connections compact and accessible inside crowded power units. A mass of 23 kg influences mounting bracket strength and overall machine balance, yet remains manageable for single-person handling during service.