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W Series

Product catalog summary

Introduction
Eaton's Hydrokraft W-Series Open Loop Piston Pumps are engineered for durability and efficiency, featuring a swash plate design. They support pressures up to 420 bar and speeds up to 1800 rev/min, with potential for higher speeds. Key features include oversized shafts and bearings, pressure-balanced components, and modular design for versatile applications.

Available Displacement Sizes
The pumps come in various displacement sizes: 130 cm³, 180 cm³, 250 cm³, 360 cm³, 500 cm³, and 750 cm³.

Control Options
Control options include:

DF - Pressure compensator
LR - Power control with pressure limiter
SP - Displacement proportional to electric signal
ST - Displacement proportional to electrical signal
DP - Displacement proportional to pressure signal
PQ - Digital controller
ES - Electric motor displacement adjustment

Additional functions for DP & SP include pressure limitation and power control overrides.

Model Codes
Detailed model codes specify pump configurations, including size, displacement, series, and technical specifications.

Pump Specifications
Specifications are provided in metric and US units, detailing performance curves for different series.

Installation and Start-up
Guidelines include avoiding mechanical and hydraulic resonances, recommended mounting attitudes, and ensuring proper shaft rotation.

General Dimensions and Options
Dimensions and mounting options are detailed for variable and fixed displacement pumps, including thru-drive options and swash angle & flow direction.

Conclusion
The Eaton Hydrokraft W-Series Open Loop Piston Pumps are robust and adaptable, suitable for diverse industrial applications due to their modular design and comprehensive control options.

Fluid Handling and Pump Priming
Ensure the reservoir is clean before filling with hydraulic fluid. Use filtered oil and fill to prevent vortexing. Prime the pump by filling the case through the uppermost drain port and ensure the case drain line is connected directly to the reservoir.

Fluid Cleanliness
Pumps are rated for anti-wear petroleum fluids with a contamination level of 18/15/13 per ISO 4066. Proper fluid condition is crucial for longevity.

Application Data and Fluid Recommendations
Specifications for various fluid types are provided, emphasizing fluid quality and cleanliness.

Case/Bearing Flushing
Flushing is mandatory for HFC fluid operation and recommended for low-pressure conditions.

Vertical Mounting and High-Pressure Lubrication
Vertical mounting may require special procedures. High-pressure lubrication is recommended for high cycle frequencies.

Control Types
Control types include LR (Load Sense), SP (Proportional Valve), ST (Electronic Flow Control), DP (Displacement Proportional to Pilot Pressure), PQ (Proportional Valve Multifunctional Control), and ES (Electric Motor Displacement Adjustment).

Displacement Adjustment Options
Options include CETOP interfaces, proportional valves, and electric motors with different response times.

Pressure and Displacement Settings
Standard and maximum settings for pressure and displacement are provided, with customization options.

Additional Features
Includes pressure limiter overrides, power control specifications, and pilot oil filters.

Special Features and Design Numbers
Special features and design numbers help in customizing pumps for specific applications.

Model Code Overview
A 48-digit model code system specifies configuration options for pumps.

Hydraulic Characteristics
Rated pressure for continuous operation is 350 bar, with a maximum of 420 bar. Fluid temperature range is -25°C to +90°C.

Performance Curves
Curves illustrate power efficiency and roller bearing life at various pressures and speeds.

Combination Units
Each unit in combination pumps should have a separate model code.

Additional Notes
Performance data may vary based on application and operating conditions.

Procedures and Recommendations
Specific configurations are recommended for severe conditions, and settings should be defined before ordering.

Key Data and Tables
Tables provide critical information for selecting appropriate pump configurations.

Catalog excerpts

Eaton Hydrokraft Open Loop Piston Pumps Powering Business Worldwide

Open the catalog to page 1

Introduction Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Typical Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Model Codes Basic Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 . . DF Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 LR Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SP Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Open the catalog to page 2

Modular design gives these pumps a wide range of applications. Fast response times. Axial piston pumps with swash plate design for reliable operation and long life. Pressure up to 420 bar. Rated speed up to 1800 rev/ min. Higher speeds possible. Oversize shafts and bearings. Rotating and pressure-loaded parts are pressure balanced. Through-drive enables multiple pump installations from a single shaft. Multiple pump combinations are also available. Integrated pilot pump, filter and pressure relief valves available. DF - Pressure compensator controlled LR - Power control with pressure limiter SP...

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• Preferred standard option • Other standard option g Special option on request X Not available Pump Size Pump Size

Open the catalog to page 4

• Preferred standard option • Other standard option • Special option on request X Not available Model Code Open Loop Pumps W Series - DF Control 0>Exam£leforiCustomerAdjustmentS£eci^:at|ons^^^^^^^_^^^^^^^ Special Pressure Main Stage Pilot Valve Load Sense Ap Adjustment Pressure Control Pressure Control Note: Setting must be at least 30 bar. Special Max. Minimum Maximum Displ. Adjustment Displacement Displacement Note: Special pressure adjustments and/or maximum displaoment adjustments are the most common reasons for using this option. EATON Hydrokraft

Open the catalog to page 5

• Preferred standard option • Other standard option g Special option on request X Not available ◊ ExamgleforCustomerAdjustment^gecification^^^^^^^^^^^^^^^^ Special Pressure Main Stage Pilot Valve Load Sense Ap AdjuStnient Pressure Control Pressure Control Note: Setting must be at least 30 bar. Special Max. Minimum Maximum Displ. Adjustment Displacement Displacement Note: Special pressure adjustments and/or maximum displaoment adjustments are the most common reasons for using this option.

Open the catalog to page 6

• Preferred standard option • Other standard option • Special option on request X Not available Model Code Open Loop Pumps W Series - SP Control ^ = P, M, R or S mandatory (electrical yoke position indicator) Main Stage Pilot Valve Pressure Control Pressure Control Special Pressure Adjustment Standard setting (bar) 20 Max. setting (bar) 40 Note: Setting must be at least 30 bar. Special Max. Minimum Maximum Displ. Adjustment Displacement Displacement Standard 0 cm3/rev 100% Note: Special pressure adjustments and/or maximum displaoment adjustments are the most common reasons for using this option....

Open the catalog to page 7

Preferred standard option Other standard option Special option on request Not available W Series - ST Control ^3 = K mandatory (FKM with HP lubrication) 33 = L (electrical yoke position indicator) Model Code Open Loop Pumps Pump Size 1) Only for pos. 26 C, D, and E and 2) Only for pos.26 G and H Notes: 0jExam£leforcustomeradjustments£ecif|cat|onsA4^i5j9i^^^^_^^^_ Special pressure Main stage Pilot valve . adjustment pressure control pressure control a Note: Setting must be at least 3Qbar, Special max. Minimum Maximum Displ. Adjustment displacement displacement Note: Special pressure adjustments...

Open the catalog to page 8

• Preferred standard option • Other standard option • Special option on request X Not available ◊ Exam£l£for£ustomerAdjustment££ecifjcatjon^^^^^^^^^^^^^^^_ Special Pressure Main Stage Pilot Valve Load Sense Ap Adjustment Pressure Control Pressure Control Note: Setting must be at least 30 bar. Special Max. Minimum Maximum Displ. Adjustment Displacement Displacement Note: Special pressure adjustments and/or maximum displaoment adjustments are the most common reasons for using this option.

Open the catalog to page 9

• Preferred standard option • Other standard option g Special option on request X Not available Model Code Open Loop Pumps W Series - PQ Control ^ = P, M, R or S mandatory (electrical yoke position indicator) Pump Size Pump Size 130 180 250 360 500 750 241251 Control Type PQ - Proportional valve multifunctional •••••• control (PpQ controller) 26 Displacement Adjustment Options D - CETOP 3 proportional valve + OBE •••••• E - CETOP 5 proportional valve + OBE • • • • •_• 271281 Control Electronic 00 - Without electronics •••••• (to be ordered separately) [29 Yoke Displacement Zone A - No pressure...

Open the catalog to page 10

Model Code Open Loop Pumps W Series - ES Control Available to special order only • Preferred standard option • Other standard option • Special option on request X Not available Pump Size Venting Valve Control Voltage Not applicable_ Customer Adjustment Specification None (standard) Eaton assigned number as per data specified in table below ◊_ Special Features None Defined by Eaton Design Number 10-99 assigned by Eaton 0^xam£l£for£ustomerAdjustment££ecifjcatjon^^^^^^^^^^^^ Special Maximum Minimum MaximumDisplacement Adjustment Displacement Displacement Standard 0 cm3/rev 100% Note: Special response...

Open the catalog to page 11

• Preferred standard option • Other standard option g Special option on request X Not available Model Code Open Loop Pumps W Series - No control: 0 = F Fixed Displacement PFW Models EATON Hydrokraft W-Series Open Loop Piston Pumps V-PUPI-TM00

Open the catalog to page 12

• Preferred standard option • Other standard option • Special option on request X Not available Model CodeCombination Pump UnitP 1 WC - ******************** individual Model Codes of each unit. • The first displacement represents the largest unit, and so on. • For each unit included in the combination, a separate Model Code should be compiled using the Form page at the beginning of the Model Codes section. • Characters [20 to [39] of the Combination Model Code will be part number of the combination, defined by Eaton and stated on the order acknowledgement. • Front and middle units must each feature...

Open the catalog to page 13

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