Catalogs >
Eaton Hydraulics >
Swing Drive Motor - Fixed Displacement

Swing Drive Motor - Fixed Displacement
16Pages

Catalog excerpts

Swing Drive Motor - Fixed Displacement - 1

Fixed Displacement Swing Drive Motor JMF Axial Piston Motor Powering Business Worldwide

Swing Drive Motor - Fixed Displacement - 2

Parking Brake & Brake Release Valve--------------------------------------------------------------7 Application Data Sheet --------------------------------------------------------------------------14 EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December 2015

Open the catalog to page 2

Swing Drive Motor - Fixed Displacement - 3

General Introduction Features & Benefits • Fixed displacement axial piston motor for swing applications • Displacement from 29cc to 250cc is available and rated pressure is up to 320 bar • Integrated fail-safe mechanical parking brake, brake release valve, shockless relief and antireverse valves • Compact integrated planetary reduction gearbox • Smooth and precise positioning eliminates mechanical shocks • High performance and reliability proven by high market acceptance • Higher mechanical and volumetric efficiency helps reduce power loss Typical Applications • Excavator and mini excavator...

Open the catalog to page 3

Swing Drive Motor - Fixed Displacement - 4

Model Code • Available option # Preferred option A Need consult

Open the catalog to page 4

Swing Drive Motor - Fixed Displacement - 5

The following 25-digit coding system has been developed to identify standard configuration options for the Fixed Displacement Swing Drive Motor. Use this model code to specify a motor with the desired features. All 25 digits of the code must be present to release a new product number for ordering. • Available option # Preferred option A Need consult EATON Swing

Open the catalog to page 5

Swing Drive Motor - Fixed Displacement - 6

Normal Pressure* Peak pressure Mechanical Brake Torque(Motor) N.m Time Delay Valve Anti-reverse valve Output Pinion Gear Ratio Motor Displacement Typical vehicle application * Normal Pressure is the max. relief valve setting pressure ** For 32cc, 39cc, gearbox integrated option is not available. Please consult AP product marketing for further information. Operation temperature rating Oil viscosity recommendation Gear oil: 80W-90 Viscosity at 40°C Oil cleanliness minimum requirements Case pressure

Open the catalog to page 6

Swing Drive Motor - Fixed Displacement - 7

Parking Brake & Brake Release Valve The Parking Brake and Brake Release Valve is incorporated into the system to provide controlled operation and reduction of wear to the Swing Motor. The Swing Parking Brake consists of multiple wet friction plates. The brake is applied via a spring force and removed by pilot pressure. • Parking Brake - OFF [disengaged] When SH port receives a hydraulic signal from a Hydraulic Remote Control (HRC), the spool in the Delay Valve shifts, opening the PG port. The pilot signal from PG is transferred to the chamber of the brake plate piston which overcomes the...

Open the catalog to page 7

Swing Drive Motor - Fixed Displacement - 8

Anti-Reverse Valve The Anti-Reverse Valve is incorporated into the system to prevent uncontrolled reverse rotation and bounce back of the Swing Motor during the stopping cycle. Benefits of this functionality are to prevent loss of load from the bucket and reduction of mechanical stresses or accelerated wear on the motor shaft and work circuit pinions. • Starting the swing operation When ports A and B are open, the upstream poppet of the Anti-Reverse Valve shifts to produce flow through an orifice to the spool end spring chamber. The spool in the Anti-Reverse Valve shifts from its Neutral...

Open the catalog to page 8

Swing Drive Motor - Fixed Displacement - 9

Relief Valves Relief Valves are incorporated into the system to prevent internal damage of the Swing Motor and Brake Swing. When ports A and B are blocked, there is no flow to the motor preventing any further swing movement. However, due to swing inertia of the excavator's upper body the motor will continue to rotate which induces excessive over pressure in the downstream port. The Relief Valves function is to discharge the rising port pressure from the high pressure port to the low pressure port of the motor. Anti-Cavitation Valves Anti-Cavitation Valves are incorporated into the system to...

Open the catalog to page 9

Swing Drive Motor - Fixed Displacement - 10

Installation Dimensions EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December 2015

Open the catalog to page 10

Swing Drive Motor - Fixed Displacement - 11

Gearbox Output Shaft Dimension, mm 29/30/33/36 Spur gear Spur gear Spur gear Pressure angle Pressure angle Pressure angle Pitch diameter Pitch diameter Pitch diameter Span measurement 55.331 Span number Span measurement 39.78 Span number Span measurement 38.685 Span number Spur gear Spur gear Spur gear Pressure angle Pressure angle Pressure angle Pitch diameter Pitch diameter Pitch diameter Span measurement 48.914 Span number Span measurement 61.4 Span number Span measurement 71.68 Span number 233/250 Spur gear Number of teeth Pressure angle Pitch diameter Span measurement 107 .5 Span...

Open the catalog to page 11

Swing Drive Motor - Fixed Displacement - 12

Motor Output Shaft 29/30/33/36/43/47/48 Involute spline Involute spline Involute spline Pressure angle Pressure angle Pressure angle Pitch diameter Pitch diameter Pitch diameter Major diameter Minor diameter Involute spline Involute spline Pressure angle Pressure angle Pitch diameter Pitch diameter Major diameter Minor diameter Form diameter Base diameter EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December 2015

Open the catalog to page 12

Swing Drive Motor - Fixed Displacement - 13

Application Description Swing Function • Starting the swing operation When the Swing Motors Delay Valve receives a hydraulic signal from a Hydraulic Remote Control (HRC), the Parking Brake is disengaged. Simultaneously a control valve receives the same signal which opens A and B ports, consequently shifting the Anti-Reverse Valve from Neutral giving full operation of the Swing Motor. • Stopping the swing operation When the HRC is in neutral, the Delay Valve commences its six second discharge before the Parking Brake engages with the Swing Motor. This delay gives adequate time for the...

Open the catalog to page 13

Swing Drive Motor - Fixed Displacement - 14

Application Data Sheet Contact: Date: Company/Location: Model / Application: Distributor/Eaton Contact: Annual Usage: Prototype / Production Date: Machine Specifications: Available Horesepower @ RPM: Vehicle / Component Weight: Machine Life Goal: Type of Hydraulic Circuit: Machine Usage Environment: Machine Temperature Range: Main Relief Set Pressure: Main Relief Set Flow Rate: Hydraulic Oil Temp Range: Current Swing Drive (mfg, model): Current Swing Drive Motor Info: Hydraulic Schematic Available: Max Pinion Output Speed: Max Pinion Output Torque Required: Swing Mass: Accelerating Torque...

Open the catalog to page 14