Detailed information on Rexroth gear pump AZPT series — shared by Autosys

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Features of Rexroth AZPT series gear pumps: – Nominal pressure of 250 bar – Use of sliding bearings, making them suitable for heavy-duty applications – Drive shafts that meet ISO or SAE standards – Possibility of combining multiple pumps together – Pipeline connections: either via flanges or internal threads – Optimal pressure pulsation achieved by reducing noise and vibration in the system – Consistently high quality – Enhanced drive shafts and pump casings result in a significantly extended service life. Overview of Rexroth AZPT series gear pumps: An important function of external gear pumps is to convert mechanical energy (torque and speed) into hydraulic energy (flow rate and pressure)； External gear motors are the exact opposite. These devices must have high efficiency to avoid generating unnecessary heat. This high efficiency is achieved through precise manufacturing processes and pressure-sensitive gap sealing. Moreover, in this low-noise silent pump, this double-groove principle helps to reduce flow pulsation by up to 75%. Structure of the Rexroth AZPT series gear pump: This external gear pump consists mainly of a pair of gears supported on bearing bushes or bearings (depending on the specific series), as well as a pump casing equipped with a front cover and a rear cover. The drive shaft extends outward from the pump’s front cover and is sealed by a shaft seal. These supporting forces on the bearings are absorbed by specialized bearing bushings ； Due to the sufficient elastic force of the sliding bearing, a surface contact is formed rather than a line contact. As a result, this also ensures excellent wear resistance of the pump—especially when operating at low speeds. These gears each have 12 teeth, which helps to maintain minimal flow pulsation and noise in the gear pump. Internal sealing is achieved through compensating forces, which are proportional to the output pressure. By using this compensation method, optimal efficiency can be ensured. These bearings provide sealing for the ends of the gaps (that is, between the gear teeth that transport high-pressure oil). By applying working pressure to the rear part of the bearing bush, the sealing area between the gear teeth and the bearing can be controlled. These specialized seals form the boundary of this area. As for these radial gaps at the top of the gear teeth, sealing is achieved through the force that pushes the gear inward toward the pump casing. Lenze AZPT series combined gear pumps: These gear pumps are highly suitable for configurations with multiple pumps connected together, where the drive shaft of the first pump extends to the second pump, and even to the third pump ； Couplings are installed between each pair of hydraulic pumps. In most cases, each pump is isolated from its adjacent pumps, meaning they each use their own separate suction port. As an option, a common oil suction port can also be used. Reminder: Generally, the specifications of single-stage pumps are used, with the following limitations: Maximum speed: It should be determined by the highest rated speed of the hydraulic pump being used. Pressure: These limitations stem from factors such as the strength of the drive shaft, as well as direct transmission and drivers. Please refer to the drawings marked with dimensions for the relevant data. Regarding the pressure limits during direct drive in the standard version, for N-series and T-series gear pumps, the maximum load that can be transmitted by the two-stage pumping drive is Mmax = 95 Nm; in other words, there are pressure limits applicable to two-stage and multi-stage hydraulic pumps. Order codes for Rexroth AZPT series gear pumps: Order code Page number 0 517 625 008 160 517 625 009 170 517 625 309 160 517 625 310 170 517 725 016 160 517 725 017 160 517 725 018 160 517 725 019 160 517 725 020 160 517 725 021 170 517 725 022 170 517 725 023 170 517 725 024 170 517 725 025 170 517 725 302 160 517 725 313 160 517 725 314 160 517 725 315 160 517 725 316 160 517 725 317 170 517 725 318 170 517 725 319 170 517 725 320 170 517 725 321 17. If the Rexroth gear pumps do not meet your requirements, you can consider Rexroth piston pumps or Rexroth vane pumps