External Gear Motors:RA14025
52Pages

Electric Drives and Controls Linear Motion and Hydraulics I Assembly Technologies I Pneumatics I Service Rexroth Bosch Group External Gear Motors F & N Series AZMF ... , AZMN ... Contents Page F-Series External Gear Motor - Ordering Code 10 - SAE O-Ring BOSS - Standard Porting 15 N-Series External Gear Motor - Ordering Code 40 - SAE O-Ring BOSS - Standard Porting 42 Part Number Index 52 General Rexroth external gear motors are produced in two different models, with a wide range of displacements, and a variety of port, shaft and mounting options. Features - Nominal pressure 3000 psi (210 bar) - Plain Bearings for heavy duty applications - Drive Shafts to SAE or DIN - Port connections: flange or screw thread - Consistent high quality - Considerably longer life due to reinforced shaft and housing

Bosch Rexroth Corporation AZ External Gear Motors | RA 14 025/04.07

General Basic design Referencing Fig. 1, the motor essentially consists of a pair of gears © supported in bearing blocks @, and a housing @ with front and rear covers ©. The output shaft @ extends from the front cover where it is sealed by a shaft seal @. The bearing forces are absorbed by special bearings with sufficient elasticity to produce surface contact instead of line contact @. They also assure good operation under emergency conditions, especially at low speed. The internal sealing is pressure-sensitive, which ensures optimum efficiency. The bearing blocks @ provide the seal at the...

Bosch Rexroth Corporation AZ External Gear Motors | RA 14 025/04.07 Motor for One Direction of Rotation Bi-Rotational Motor

Bosch Rexroth Corporation 5/52 RA 14 025/04.07 | AZ External Gear Motors 1) Dirt particles retention > 25 p,m is 1 :75, i.e. 98.67% Safety requirements pertaining to the whole system must be observed. In the case of applications with high numbers of load cycles, please consult us. Definition of Pressure p1 max. continuous pressure p2 max. starting pressure (depending on the application, this must be taken into consideration when setting the pressure of the hydraulic system's pressure-relief valve). As viewed looking at end of drive shaft.

Bosch Rexroth Corporation AZ External Gear Motors | RA 14 025/04.07 Bosch Rexroth Gear Motors V [cm3/rev] Q [l/min] Ap [bar] M [Nm] n [rev/min] P [kW] Design Calculations of Gear Motors (Reference chart 1) The design calculations for motors are based on the following parameters: Displacement Flow consumption Pressure (p1, pA) Output torque Speed Power output It is also necessary to allow for different efficiencies such as: nv Volumetric efficiency nhm Hydraulic-mechanical efficiency n Total efficiency The following formulas describe the various relationships. They include correction...

RA 14 025/04.07 | AZ External Gear Motors Bosch Rexroth Corporation Drive Arrangements 1. Flexible couplings (Fig. 4) The coupling must not transfer any radial or axial forces to the motor. The maximum radial runout of shaft spigot is 0.2 mm. Refer to the fitting instructions provided by the coupling manufacturer for details of the maximum permitted shaft misalignment. Fig. 4 2. Sleeve couplings (Fig. 5) Used on shafts with DIN or SAE splining. Note: There must be no radial or axial forces exerted on the motor shaft or sleeve coupling. The sleeve must be free to move axially. The distance...

Bosch Rexroth Corporation AZ External Gear Motors | RA 14 025/04.07 3. Drive shaft with dog (Fig. 6) For the close-coupling of the motors to gearboxes, etc. the motors shaft has a special drive dog which combines with a center coupling @ (included with the motors). There is no shaft seal. The recommended arrangements and dimensions for the drive end and sealing are as follows: © Drive shaft Case-hardening steel DIN 17 210, e.g. 20 Mn CrS 5. case-hardened 0.6 deep; HRc 60 ±3. Surface for sealing ring ground without rifling Rt S 4 p,m. © Radial shaft seal Rubber-covered seal (see DIN 3760,...

RA 14 025/04.07 | AZ External Gear Motors 5. Outrigger bearings Outrigger bearings eliminate possible problems associated with side load when the motors are driven by V-belts or gearwheels. The diagrams below show the maximum overhung and thrust loads that can be tolerated referred to a bearing life of Lh = 1,000 hours. Bosch Rexroth Corporation 9/52 * Fr is reduced by 0.7 Fa when axial loading Fa is applied.

10/52 Bosch Rexroth Corporation Ordering Code (F Series Motor) AZ M F -1D or 2D -016 UR R 12 M L Function M = Motor End cover B - Standard A - Rear ports L - Case drain port L S0018 - Internal case drain D - PRV (bar) Seals Direction of rotation Right = R Left = L Universal = U (Bi-rotational) NBR = M FPM = P NBR, shaft seal in FPM = K Drive shafts Front flange Line connections Matching front flange bG3 Conical 1:5 metric for flange A -(Tapered key) Conical 1:8 metric (Tapered key) Dog (Tang) Cylindrical (Straight key) ISO 0 18mm Cylindrical (Straight key) SAE A 5/8" SAE 5/8" Keyed,...

Bosch Rexroth Corporation 11/52 F Series Motor Product Index (Reference page 10 for ordering code designators) Shaft Mounting Port Case Page Number Ordering code Type Flange Ports Orientation Drain

Bosch Rexroth Corporation F Series Drive Shafts min. 21 min. 21 min. 21 usable shaft usable usable shaft length shaft min. 21 21 min.min. 21 length min. 21 length shaft usable shaft shaft usable usable usable shaft length ± 0.4 length length 35.9 length ± 0.4 35.9 35.9 ± 0.4 22 22 22 0.4 35.9 0.4 3 35.9 ± 35.9 ± 0.4 35.9 ± ±0.4 33 22 22 22 22 33 3 3 min. 21 min. 21 shaft usable usable shaft length length 35.9 ± 0.4 35.9 ± 0.4 22 3 22 3 ANSI B 92.1 ANSI16/32 SP 11T B 92.1 11T 16/32 SPangle 30° pressure 30° pressure angle min. 21.8 min. 21.8 min. 21.8 usable shaft usable usable shaft length...

Bosch Rexroth Corporation 2 ±0.2 2 ±0.2 3.2 ±0.2 2 3.2 ±0.2± 0.2 Pump without 0.2 2 ±2 ± 0.2 Pump without shaft seal, ± 0.2 0.2 ± 0.2 ± 3.2 2 2 shaft seal, 14 see page 3.2 ± 3.2 ± 0.20.2 seePump without page ± 0.2 3.23.2 ± 0.2 Pump without14 Pump without shaft seal, shaft see seal, shaft without Pumpseal, page 14 Pump without see page see page 14 shaft seal,14 shaft seal, see page 14 14 see page