Mf Series Hydraulic Piston Motor Sauer Brand for Excavator

China Mf Series Hydraulic Piston Motor Sauer Brand for Excavator, Find details about China Hydraulic Motor, Sauer Motor from Mf Series Hydraulic Piston Motor Sauer Brand for Excavator

Basic Info.

Model NO.

Mf20/Mf21/Mf22/Mf23/ Mf24/MF25/MF26/MF27

Type

Plunger Type

Model

Mf22

Original

China

Application

Construction Machinery

Trademark

FOCOR

Transport Package

Wooden Case for Export

Specification

piston

Origin

China

HS Code

84122910

Model NO.

Mf20/Mf21/Mf22/Mf23/ Mf24/MF25/MF26/MF27

Type

Plunger Type

Model

Mf22

Original

China

Application

Construction Machinery

Trademark

FOCOR

Transport Package

Wooden Case for Export

Specification

piston

Origin

China

HS Code

84122910

Product Desciption

Mf series Hydraulic Piston Motor Sauer Brand for Excavator

Hydraulic Sauer-Sundstrand axial piston motor MF20, MF21, MF22, MF23, MF24, MF25, MF26, MF27

Description

Closed circuit
Series 20
Size: 20, 21, 22, 23, 24, 25, 26, 27
Nominal pressure 210 bars, Maximum pressure 350 bars.

The Sauer MF axial piston variable displacement motors, Series 20, are of swash plate construction with variable flow capability suitable for hydrostatic transmissions with closed circuit. The flow rate is proportional to the motors driven speed displacement, which, in turn, is determined by the swash plate angle. The latter is infinitely adjustable between zero and maximum displacement. Flow direction is reserved by titling the swash plate to the opposite side of the neutral or zero displacement position. These units and parts are fit, form and function replacements for Sauer-Sundstrand series 20 components.

- Suitable for a variety of applications
- Multiple displacements and options available
- 8 different frame sizes
- Engineered to provide a long service life and reliability
- Fixed displacement motor can be operated in either direction of rotation
- Multiple drive shaft options and control options
- Heavy duty bearings and shafts
- Easily serviceable
- Replacement parts also available
- Direct replacements for Sauer-Sundstrand
Features
The full-length shaft with a high efficient tapered roller bearing arrangement offers a high loading capacity for external radial forces. Additional motors can be built on. The hydro-mechanical servo displacement control maintains the selected swash plate position and hence motor displacement.
Upon release of the control handle, the swash plate automatically returns to the null position and the flow become zero.
High case pressures can be archived without leakage even at the lowest temperature by using suitable shaft seals. The servo valve arrangement offers the facility to incorporate function regulators and remote control system. Axial piston units are designed for easy servicing, complete dismantling and reassembly can be carried out standard hand tools, and all components or sub-assemblies are replaceable.
Servo Displacement Control (Linear response)
Regular by control handle on the servo valve, the swash plate can be infinitely varied in both direction with the help of the servo system.
The motor displacement resulting from any control handle position can be established using figures (5a - 5c).
The angle of the control handle for stroke initiation and for the final position of the stroke can vary from unit to unit within the range of the tolerance band.

Technical Data
Table of values (theoretical values, without efficiency and tolerances; values rounded)

Size	Dimension	Sauer-Sundstrand MF motor
Size	Dimension	MF20	MF21	MF22	MF23	MF24	MF25	MF26	MF27
Max. displacement	cm3	33,3	51,6	69,8	89,0	118,7	165,8	227,3	333,7
Max. flow	dm3min-1	119,5	159,9	196,1	230,5	278,9	348,1	429,59	557,2
Max. flow	dm3min-1	4	6	4	1	4	8	429,59	8
Charge motor	cm3	12,3	12,3	18,03	18,03	18,8	32,8	32,8	65,5
Max. pressure	MPa	35
Nominal pressure	MPa	21
Max. pressure of control	MPa	3,5
Charge pressure	MPa	0,8 - 2,0
Max. pressure in case	MPa	0,25 continuous 0,5 intermittent
Maximum speed +	min-1	3590	3100	2810	2590	2350	2100	1890	1670
Minimum speed	min-1	500
Nominal speed	min-1	1500
Kinematic viscosity range of working fluid - starting - operating - optimum	mm2s-1	1000 12 - 600 25 - 35
Kind of working fluid		mineral oil
Operating temperature	oC	- 40 to + 50
Max. temperature of working fluid in tank	oC	80
Purity of working fluid	µm	10
Maximum swash plate angle	o	± 18 o
Weight	kg	30	35	40	47	70	124	152	197