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A4FM Sizes 22…500
Series 1, Series 3
Nominal pressure up to 400 bar
Peak pressure up to 450 bar
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Design and Application: Rexroth A4FM axial piston fixed displacement motors feature a swashplate design and are ideally suited for open and closed loop circuits in hydrostatic drives. The motor’s output speed is directly related to the input flow and inversely proportional to the displacement.
Performance: Increasing the pressure drop across the motor allows for a smooth transition from high to low pressure, which results in increased output torque. Rexroth A4FM piston motors are renowned for their long service life and optimum efficiency, ensuring reliable performance in a wide range of applications.
Versatility and Reliability: The compact design of the A4FM motors makes them particularly suitable for specialist applications where the A2FM models may not be an ideal choice. They feature a robust rotating group with swashplate technology, ensuring long-term reliable operation.
A4FM Piston Pump Size:A4FM22,A4FM28,A4FM40,A4FM56,A4FM71,A4FM125,A4FM250,A4FM500
| Size | 22 | 28 | 40 | 56 | 71 | 125 | 250 | 500 | ||
| Displacement | Vg | ย cm3 | 22 | 28 | 40 | 56 | 71 | 125 | 250 | 500 |
| Max. speed | nmax continuous | rpm | 4250 | 4250 | 4000 | 3600 | 3200 | 2600 | 2200 | 1800 |
| nmax interm.1) | rpm | 5000 | 5000 | 5000 | 4500 | โ | โ | โ | โ | |
| Max. flow (at nmax) | qV max | L/min | ย ย 93 | 119 | 160 | 202 | 227 | 325 | 550 | 900 |
| Torque constants | TK | Nm/bar | 0,35 | 0,445 | 0,64 | 0,89 | 1,13 | 1,99 | 3,97 | 7,95 |
| Torque (at ฮp = 400 bar) | Tmax | ย Nm | 140 | 178 | 255 | 356 | 3952) | 6962) | 13912) | 27832) |
| Filling volume | L | 0,3 | 0,3 | 0,4 | 0,5 | 2,0 | 3,0 | 7,0 | 11,0 | |
| Moment of inertia about drive axis |
J | kgm2 | ย ย 0,0015 | 0,0015 | 0,0043 | 0,0085 | 0,0121 | 0,0300 | 0,0959 | 0,3325 |
| “Actual starting torque at n = 0 rpm (ฮp = 350 bar)” |
Nm (approx.) | 320 | 564 | 1127 | ||||||
| Weight (approx.) | m | kg | 11 | 11 | 15 | 21 | 34 | 61 | 120 |
Designed for high-pressure applications, the Bosch Rexroth A4FM axial piston fixed displacement motor features a swash plate design that is ideal for both open and closed-loop hydraulic circuits. Its output speed is proportional to the input flow and inversely proportional to the motor displacement, while torque increases as the voltage drops from the high-pressure side to the low-pressure side.
The versatility of this motor lies in its compact installation dimensions, making it suitable for use in a variety of industries such as construction, agriculture and manufacturing. The correlation between torque output and voltage drop increases operational flexibility, allowing precise control under a wide range of operating conditions as required.
The A4FM motor embodies Bosch Rexroth’s commitment to efficient hydraulic solutions, combining a robust design with dynamic performance characteristics that are essential for optimizing space and ensuring reliable operation in demanding applications.
POOCCA Hydraulic (Shenzhen) Co., Ltd. was established in 1997. As a provider of hydraulic solutions, we focus on the research, development, manufacturing, maintenance and distribution of hydraulic products such as pumps, motors, valves and related components. With decades of experience serving hydraulic system users around the world, we have built a strong reputation in the industry.
Over the past two decades, POOCCA Hydraulics has demonstrated continued growth and innovation in the field of hydraulics. Our commitment earns the trust of domestic and international manufacturers and fosters strong corporate partnerships. The annual export volume exceeds 16 million US dollars, and our products are sold to more than 100 countries around the world. We are proud of our long-standing, committed relationships with dealers in more than 75 countries, including important markets such as the United States, Indonesia, Mexico, Thailand, Russia and Brazil.
Design and Application: Rexroth A4FM axial piston fixed displacement motors feature a swashplate design and are ideally suited for open and closed loop circuits in hydrostatic drives. The motor’s output speed is directly related to the input flow and inversely proportional to the displacement.
Performance: Increasing the pressure drop across the motor allows for a smooth transition from high to low pressure, which results in increased output torque. Rexroth A4FM piston motors are renowned for their long service life and optimum efficiency, ensuring reliable performance in a wide range of applications.
Versatility and Reliability: The compact design of the A4FM motors makes them particularly suitable for specialist applications where the A2FM models may not be an ideal choice. They feature a robust rotating group with swashplate technology, ensuring long-term reliable operation.
A4FM Piston Pump Size:A4FM22,A4FM28,A4FM40,A4FM56,A4FM71,A4FM125,A4FM250,A4FM500
| Size | 22 | 28 | 40 | 56 | 71 | 125 | 250 | 500 | ||
| Displacement | Vg | ย cm3 | 22 | 28 | 40 | 56 | 71 | 125 | 250 | 500 |
| Max. speed | nmax continuous | rpm | 4250 | 4250 | 4000 | 3600 | 3200 | 2600 | 2200 | 1800 |
| nmax interm.1) | rpm | 5000 | 5000 | 5000 | 4500 | โ | โ | โ | โ | |
| Max. flow (at nmax) | qV max | L/min | ย ย 93 | 119 | 160 | 202 | 227 | 325 | 550 | 900 |
| Torque constants | TK | Nm/bar | 0,35 | 0,445 | 0,64 | 0,89 | 1,13 | 1,99 | 3,97 | 7,95 |
| Torque (at ฮp = 400 bar) | Tmax | ย Nm | 140 | 178 | 255 | 356 | 3952) | 6962) | 13912) | 27832) |
| Filling volume | L | 0,3 | 0,3 | 0,4 | 0,5 | 2,0 | 3,0 | 7,0 | 11,0 | |
| Moment of inertia about drive axis |
J | kgm2 | ย ย 0,0015 | 0,0015 | 0,0043 | 0,0085 | 0,0121 | 0,0300 | 0,0959 | 0,3325 |
| “Actual starting torque at n = 0 rpm (ฮp = 350 bar)” |
Nm (approx.) | 320 | 564 | 1127 | ||||||
| Weight (approx.) | m | kg | 11 | 11 | 15 | 21 | 34 | 61 | 120 |
Designed for high-pressure applications, the Bosch Rexroth A4FM axial piston fixed displacement motor features a swash plate design that is ideal for both open and closed-loop hydraulic circuits. Its output speed is proportional to the input flow and inversely proportional to the motor displacement, while torque increases as the voltage drops from the high-pressure side to the low-pressure side.
The versatility of this motor lies in its compact installation dimensions, making it suitable for use in a variety of industries such as construction, agriculture and manufacturing. The correlation between torque output and voltage drop increases operational flexibility, allowing precise control under a wide range of operating conditions as required.
The A4FM motor embodies Bosch Rexroth’s commitment to efficient hydraulic solutions, combining a robust design with dynamic performance characteristics that are essential for optimizing space and ensuring reliable operation in demanding applications.
POOCCA Hydraulic (Shenzhen) Co., Ltd. was established in 1997. As a provider of hydraulic solutions, we focus on the research, development, manufacturing, maintenance and distribution of hydraulic products such as pumps, motors, valves and related components. With decades of experience serving hydraulic system users around the world, we have built a strong reputation in the industry.
Over the past two decades, POOCCA Hydraulics has demonstrated continued growth and innovation in the field of hydraulics. Our commitment earns the trust of domestic and international manufacturers and fosters strong corporate partnerships. The annual export volume exceeds 16 million US dollars, and our products are sold to more than 100 countries around the world. We are proud of our long-standing, committed relationships with dealers in more than 75 countries, including important markets such as the United States, Indonesia, Mexico, Thailand, Russia and Brazil.
POOCCA Hydraulics is a powerful hydraulic enterprise integrating R&D, manufacturing, sales and maintenance. Its products are exported to more than 120 countries. Its quality, price and service are deeply recognized and trusted by customers.
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