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MA series hydraulic motors | SAE version

MA series hydraulic motors | SAE version

Product catalog summary

Overview of MA Series Motors (SAE Standard)

The document provides detailed technical specifications, mechanical characteristics, and ordering information for the MA series hydraulic motors, designed according to SAE standards.

1. Mechanical Forces on Motor Shaft

Radial Force (Fr): Maximum acceptable radial forces at the midpoint of the shaft length are specified for each motor model, ranging from 2350 N (MA 10) up to 20000 N (MA 180).
Axial Force (Fa): Axial forces pushing the shaft inward are given in lbf/psi and N/psi (N/bar), with values increasing with motor size, e.g., 0.83 N/psi (12 N/bar) for MA 10 up to 6.55 N/psi (95 N/bar) for MA 180.
These forces are critical for ensuring shaft integrity and motor longevity under operational loads.

2. Motor Performance Specifications

Model	Displacement (cu.in/rev)	Displacement (cc/rev)	Continuous Max Speed (rpm)	Intermittent Max Speed (rpm)	Max Flow Absorbed (gpm / l/min)	Torque at 350 bar (lbf.ft / N.m)	Theoretical Max Power at 5800 psi (HP / kW)	Max Allowable Pressure (continuous / peak) (psi / bar)	Weight (lbs / kg)
MA 10	0.62	10.2	8000	8800	21.6 / 82	42 / 57	72.9 HP / 54.4 kW	5800 / 6525 psi (400 / 450 bar)	14.3 lbs / 6.5 kg
MA 180	11.02	180.6	3600	4000	171.8 / 650	742 / 1006	581 HP / 433.4 kW	5800 / 6525 psi (400 / 450 bar)	107 lbs / 48.5 kg

Note: For speeds higher than listed, contact the manufacturer.

3. Ordering Code System

The motor code is constructed by selecting parameters across 10 positions:

01: Motor type (MA series)
02: Displacement size (e.g., 10, 12, 18, ... 180)
03: Mounting flange type (SAE B, C, D)
04: Shaft type and specifications (splined or keyed, number of teeth, pitch)
05: Inlet port location and type (bottom, rear, side, threaded)
06: Drain ports (usually 2)
07: Suitability for speed sensor (yes/no)
08: Speed sensor included (yes/no)
09: Valve options (without valve, with flushing valve)
10: Low temperature option (NBR or FKM seals)

4. Mechanical Dimensions and Ports

Detailed dimensional drawings and port configurations are provided for each motor size, including shaft end types, flange and threaded port locations, and sizes. Key points include:

Shaft ends vary by model, with splined shafts (various teeth counts and pitches) and keyed shafts (diameters from 1" to 1¾") available.
Inlet ports can be SAE flanges (B, C, D sizes) or threaded ports, located at bottom, rear, or side depending on model.
Drain ports are standardized with UNF threads.
Maximum pressure ratings vary slightly for larger models (e.g., MA 80 max 350 bar, MA 90 max 320 bar).

5. Critical Parameters and Recommendations

Maximum continuous and peak pressures are 400 bar (5800 psi) continuous and 450 bar (6525 psi) peak for most models.
Radial and axial forces must not be exceeded to avoid shaft damage.
Speed limits must be respected; for higher speeds, consultation with the manufacturer is required.
Selection of shaft type, port configuration, and valve options should be based on application requirements.
Low temperature seal options are available for cold environment operation.

Summary

This document serves as a comprehensive technical reference for selecting, specifying, and ordering MA series hydraulic motors. It includes mechanical load limits, performance data, dimensional details, and configuration options to ensure proper integration and reliable operation in hydraulic systems.

Catalog excerpts

MA series hydraulic motors | SAE version-1

CHARACTERISTICS OF THE MA SERIES MOTORS (SAE) Motor model Theoretical maximal power at 5800 psi 400 bar Max. allowable pressure continuous / peak psi (1) For higher speeds, please contact us. ►Acceptable forces applied to motor shaft Motor model N/psi (N/bar) * Fr: radial force measured at mid point of length of shaft. Fa: axial force which tends to push the shaft inwards. * Differential pressure between A and B. For other forces, please contact us.

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MA series hydraulic motors | SAE version-2

Order code system of MA series motors MA To obtain the code for your motor, complete the different parameters 02, 04, 05, 07, 08, 09 and 10 in the table on the left according to the options you require (see table below). Mounting flange SAE B 2 bolts 0 = Without suitability for valves 1 = Compatible with flushing valve Drain ports T1 and T2 2 Suitable for use of speed sensor 07

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MA series hydraulic motors | SAE version-3

Cylindrical keyed shaft Ø 1 ″ Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-4

►Inlet ports Side threaded ports A and B Rear threaded ports A and B Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-5

Cylindrical keyed shaft Ø 1¼″ Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-6

Side SAE flange ports A and B SAE 1/2″ 6000 psi Rear SAE flange ports A and B SAE1/2″ 6000 psi Ø 0.43 (11) Rear threaded ports A and B Side threaded ports Side threaded ports Dimensions in inches (mm) are given only as an indica

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MA series hydraulic motors | SAE version-7

Cylindrical keyed shaft Ø 1¼″ Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-8

MA 32 - 41 ►Inlet ports SAE flange ports, bottom SAE 1/2″ 6000 psi Rear flange ports SAE 1/2″ 6000 psi Side flange ports A and B SAE 1/2″ 6000 psi Rear threaded ports 15/16"-12UN-2B depth 0.79 (20) Side threaded ports A and B Side threaded ports A and B + valve Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-9

Cylindrical keyed shaft Ø 1¼″ Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-10

►Inlet ports SAE flange ports, bottom SAE 3/4″ 6000 psi 2 (50.8) SAE flange ports, rear SAE 3/4″ 6000 psi SAE flange ports, side A and B SAE 3/4″ 6000 psi Rear threaded ports Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-11

Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-12

SAE flange ports, bottom SAE 1″ 6000 psi 2.25 (57.2) 1.09 (27.8) SAE flange ports, rear SAE 1″ 6000 psi SAE flange ports, side A and B SAE 1 ″ 6000 psi Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-13

Cylindrical keyed shaft Ø 1¾″ Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-14

SAE flange ports, rear SAE 1¼″ 6000 psi MA 125 SAE flange ports, bottom SAE 1¼″ 6000 psi SAE flange ports, side A and B SAE 1¼″ 6000 psi Dimensions in inches (mm) are given only as an indication.

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MA series hydraulic motors | SAE version-15

Cylindrical keyed shaft Ø 50 DIN 6885 AS 14 x 9 x 70 mm Dimensions in inches (mm) are given only a

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MA series hydraulic motors | SAE version-16

SAE flange ports, bottom SAE 1¼″ 6000 psi SAE flange ports, rear SAE 1¼ ″ 6000 psi 7.64 (194) SAE flange ports, side A and B ″ Dimensions in inches (mm) are given only as an indication.

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