Company Overview

Salami S.p.A., established in 1956 in Italy, is a global leader in manufacturing hydraulic power components for mobile machinery and industrial vehicles. The company prioritizes Quality, Innovation, and Service, operating worldwide with offices in Spain, France, USA, and Canada. It holds a DNV-certified quality system under UNI EN ISO 9001/2008.

Product Introduction

The catalogue introduces the aluminium gear pump model 3PE, an advanced evolution of the Group 3 series. Available in displacements from 21 to 75 cc/rev (1.26 to 4.48 cu.in/rev), the 3PE pump supports peak pressures up to 300 bar (4350 psi). Key features include compact size for Tier 4 engine compatibility and a modular design for easy customization. Corresponding unidirectional and reversible motors are also offered.

Catalogue Structure

The catalogue is organized into two main sections:

• Section A - Technical Catalogue: Contains detailed technical specifications, assembly dimensions, pressure and speed ratings, port and flange options, shaft types, and performance diagrams.
• Section B - Dealer Management: Provides ordering codes for pumps, motors, multiple pump assemblies, and conversion kits.

Technical Specifications and Features (Section A)

Pressure Ratings

• P3: Peak pressure
• P2: Intermittent operating pressure (1/3 working time)
• P1: Continuous operating pressure

Operating Conditions

• Inlet absolute pressure: 0.7 to 2.5 bar (10 to 36 psi)
• Fluid viscosity: minimum 12 mm²/s, recommended 17–65 mm²/s, max starting 800 mm²/s
• Operating temperature: -15 to 85 °C (standard seals), -20 to 110 °C (FPM/Viton seals)
• Hydraulic fluid: mineral oil

Important: Pumps without shaft seals require minimum suction pressure of 0.7 bar absolute to prevent oil suction through the front flange and potential damage.

Design and Construction

• Low-friction, large-area bushings for durability and efficiency
• Optimized thrust plate and seal design for high temperature and low viscosity fluids
• Double pump with common suction option reduces mounting costs and size

Drive Shafts and Loads

Radial and axial shaft loads must be avoided to prevent premature wear and reduced service life.

Hydraulic Pipeline Recommendations

• Minimize pressure drop in suction lines
• Recommended fluid speeds: suction line 1–2 m/s, pressure line 6–10 m/s
• Lower speeds advised for high temperature or continuous duty; higher speeds for intermittent or low temperature difference

Rotation and Direction

Supports both clockwise and anti-clockwise rotation viewed from the drive shaft. Flanges with threaded vent holes for shaft seal drainage are available.

Filtration

Filtration levels must meet NAS 1638 and ISO 4406 standards to ensure fluid cleanliness and pump longevity.

Shaft Seal Design

• Maximum seal pressure: 3 bar (44 psi)
• Seal materials: BUNA (NBR) for -15 to 85 °C, VITON (FPM) for -20 to 110 °C
• Seal types include double and single lipped seals depending on flange code

Rotation Change Procedure

Detailed step-by-step instructions for reversing rotation on unidirectional pumps and motors, including disassembly and reassembly of front flange, seals, thrust plates, and torque specifications (180 Nm).

Ports and Flanges

• Various flanged and threaded port options conforming to American and European standards
• Available common suction and priority flow valve configurations for multiple pumps

Performance Diagrams

Charts illustrate flow, pressure, and efficiency parameters to aid in pump selection and system design.

Dealer Management (Section B)

Includes ordering codes for 3PE pump models differentiated by flange, shaft type, and rotation direction. Also covers assembly kits for pump conversions and multiple pump configurations.

Critical Recommendations and Best Practices

• Maintain minimum suction pressure (0.7 bar absolute) when shaft seals are absent to prevent damage
• Use cooling systems to maintain fluid temperature near 60 °C and viscosity around 20 cSt for optimal life
• Avoid radial and axial shaft loads to extend service life
• Follow rotation change instructions precisely to ensure correct assembly
• Adhere to recommended filtration standards to prevent contamination-related failures

Additional Technical Details

Product Codes and Shaft Types

• Multiple shaft types: SAE B splined, tapered, tang drive, parallel shafts with specific dimensions and torque ratings
• Special shafts with woodruff keys and outriggers for combined load support

Flanges and Mounting

• European, German, and SAE B/BB mounting standards supported
• Rear covers and external drain ports available for reversible and unidirectional units

Port Types and Sizes

• Flanged, threaded, and common suction ports with BSPP options
• Uni- and bi-directional port configurations with rear port availability on select models

Performance Specifications

• Displacements from 21 to 75 cm³/rev, some requiring sales contact for special release
• Working pressures: continuous (P1) 180–280 bar, intermittent (P2), and peak (P3) pressures specified
• Maximum rotational speeds vary by pressure and displacement; reduce max speed by 10% when operating exclusively at P1
• Weights provided for pumps and additional components for assembly calculations

Operating Conditions and Fluids

• Viscosity range: 12–800 mm²/s; recommended 20–80 mm²/s; starting viscosity up to 2000 mm²/s
• Temperature range: -20 to 85 °C standard, up to 110 °C with FPM seals
• Mineral oil-based fluids per DIN/ISO standards; consult technical department for other fluids
• Special filtration considerations for sensitive control systems
• Consult manufacturer for frequent load cycle applications

Motor Assembly Features

• Double shaft seals with reinforced inner seal
• Rotation inversion between pumps and motors (anti-clockwise pumps become clockwise motors)
• External drain and rear port options available

Load and Bearing Recommendations

• Outrigger bearings recommended for combined radial and axial loads
• Maximum axial load limited to 15% of maximum radial load for 3000-hour bearing life

Spool Controls and Priority Flow Valves

• Available configurations with load sensing priority valves, with or without main relief valves
• Double and triple pump assemblies can include priority flow valves for flow and pressure management

Performance Graphs

• Input power vs. RPM and flow rate vs. RPM charts at various pressures assist in model selection

Dimensional Data and Assembly

• Comprehensive tables provide displacement volumes, shaft diameters, flange sizes, mounting hole patterns in metric and imperial units
• Mounting flange standards include SAE BB 15T-16/32DP, SAE B parallel European, and others
• Port configurations include SAE metric, European, German flanged ports, BSPP threaded ports, and SAE ODT threaded ports
• Assembly kits include coupling sleeves, rear plates, O-rings, front flanges, washers, reference pins, and screws for right- and left-hand rotations
• Tie-rod length calculation method and data for double pumps provided, with example calculations and reference to an automated Excel tool

Ordering Instructions and Model Variants

• Ordering codes correspond to specific displacements, flange and shaft types, and rotation directions
• Models cover displacement range 21 to 75 cm³/rev with clockwise and anti-clockwise variants
• Use ordering codes to ensure accurate procurement and inventory management

Summary

The Salami 3PE and 3ME aluminium gear pumps and motors offer compact, modular, and high-performance hydraulic solutions tailored for modern industrial and mobile applications. The comprehensive technical catalogue provides detailed specifications, assembly instructions, performance data, and ordering information to support engineers, dealers, and end-users in selecting, installing, and maintaining these products effectively. Critical recommendations emphasize proper suction pressure, fluid temperature and viscosity control, shaft load avoidance, filtration standards, and precise assembly procedures to maximize reliability and service life.