Hesper Gear Pumps Product Catalog
Table of Contents
-
Introduction
-
Product Range Overview
-
HP Series External Gear Pumps
-
BHP Series Bi-directional Gear Pumps
-
HA Series Aluminum Alloy Gear Pumps
-
HILO Series Double Gear Pumps
-
Accessories & Replacement Parts
-
Technical Specifications Comparison
-
Application Areas
-
Quality Assurance & Service
-
Contact Information
1. Introduction
Hesper (established in 1877) is a leading European manufacturer specialized in hydraulic gear pumps, gear motors, and flow dividers. With over 50 years of expertise in hydraulic systems, Hesper delivers high-performance, reliable, and efficient gear pump solutions for industrial, mobile, and marine applications, renowned for their precision engineering and durability in demanding operating conditions.
2. Product Range Overview
Hesper offers a comprehensive portfolio of gear pumps designed to meet diverse hydraulic system requirements:
|
Pump Type
|
Pressure Range
|
Displacement Range
|
Key Applications
|
|---|---|---|---|
|
External Gear Pumps (HP Series)
|
Up to 280 bar (4,060 psi)
|
0.2-250 cm³/rev
|
Industrial machinery, material handling, agricultural equipment
|
|
Bi-directional Gear Pumps (BHP Series)
|
Up to 280 bar (4,060 psi)
|
0.85-11 cm³/rev
|
Applications requiring reversible flow operations
|
|
Aluminum Alloy Gear Pumps (HA Series)
|
Up to 250 bar (3,625 psi)
|
0.2-250 cm³/rev
|
Mobile hydraulics, light industrial equipment
|
|
HILO Double Gear Pumps
|
Up to 280 bar (4,060 psi)
|
0.85-7.8 cm³/rev
|
Applications needing economic energy use with high pressure demand in final stages
|
3. HP Series External Gear Pumps
Key Features:
-
Robust cast iron construction for heavy-duty applications
-
Precision-machined helical gears for smooth operation and reduced noise
-
Multiple displacement options from 0.2 to 250 cm³/rev
-
SAE and ISO mounting flanges for easy integration
-
Optional built-in pressure relief and flow control valves
-
High volumetric efficiency (up to 93%) and mechanical efficiency (up to 91%)
Performance Specifications:
|
Model
|
Displacement (cm³/rev)
|
Max Pressure (bar/psi)
|
Max Speed (rpm)
|
Material
|
|---|---|---|---|---|
|
HP1-05
|
5
|
250/3,625
|
3,600
|
Cast Iron
|
|
HP2-25
|
25
|
250/3,625
|
3,200
|
Cast Iron
|
|
HP3-50
|
50
|
280/4,060
|
2,800
|
Cast Iron
|
|
HP4-100
|
100
|
280/4,060
|
2,400
|
Cast Iron
|
|
HP4-200
|
200
|
250/3,625
|
2,000
|
Cast Iron
|
Applications: Forklifts, truck-mounted cranes, agricultural machinery, industrial presses, plastic injection molding equipment
4. BHP Series Bi-directional Gear Pumps
Key Features:
-
Reversible flow capability with alternative inlet/outlet configurations
-
External or internal drainage options for flexible installation
-
High power density with compact design
-
Self-priming with excellent suction characteristics
-
Wide viscosity range compatibility (10-1,000 cSt)
Performance Specifications:
|
Model
|
Displacement (cm³/rev)
|
Max Pressure (bar/psi)
|
Max Speed (rpm)
|
Drainage Type
|
|---|---|---|---|---|
|
BHP1-08
|
0.85
|
280/4,060
|
3,000
|
External/Internal
|
|
BHP1-11
|
11
|
280/4,060
|
2,800
|
External/Internal
|
|
BHP2-16
|
16
|
250/3,625
|
2,500
|
External/Internal
|
|
BHP2-25
|
25
|
250/3,625
|
2,200
|
External/Internal
|
Applications: Material handling equipment, mobile hydraulics requiring reversible operations, agricultural machinery with bidirectional functions
5. HA Series Aluminum Alloy Gear Pumps
Key Features:
-
Lightweight aluminum alloy construction for reduced total system weight
-
High strength-to-weight ratio for mobile applications
-
Available in single and multi-pump combinations for customized flow requirements
-
Various mounting flanges, drive shafts, and port configurations to meet global standards
-
Optional built-in pressure and flow control valves for system optimization
Performance Specifications:
|
Model
|
Displacement (cm³/rev)
|
Max Pressure (bar/psi)
|
Max Speed (rpm)
|
Weight (kg/lbs)
|
|---|---|---|---|---|
|
HA2-14
|
14
|
250/3,625
|
3,600
|
4.2/9.26
|
|
HA2-25
|
25
|
250/3,625
|
3,200
|
5.1/11.24
|
|
HA3-50
|
50
|
250/3,625
|
2,800
|
7.8/17.19
|
|
HA3-80
|
80
|
250/3,625
|
2,500
|
9.5/20.94
|
Applications: Mobile hydraulic systems, forestry equipment, light industrial machinery, vehicle-mounted hydraulic systems
6. HILO Series Double Gear Pumps
Key Features:
-
Combination of high-flow low-pressure and low-flow high-pressure sections in one unit
-
Built-in valve plate for automatic pressure switching
-
Reduces energy consumption by using high pressure only when required
-
Compact design saves installation space
-
Available with various control options for optimized system performance
Performance Specifications:
|
Model
|
Displacement (cm³/rev)
|
Max Pressure (bar/psi)
|
Switching Pressure (bar/psi)
|
Max Speed (rpm)
|
|---|---|---|---|---|
|
HILO-08
|
0.85
|
280/4,060
|
120/1,740
|
3,000
|
|
HILO-15
|
1.5
|
280/4,060
|
120/1,740
|
2,800
|
|
HILO-30
|
3.0
|
280/4,060
|
140/2,030
|
2,500
|
|
HILO-78
|
7.8
|
280/4,060
|
140/2,030
|
2,200
|
Applications: Hydraulic presses, injection molding machines, lifting equipment, and any application requiring variable pressure with energy efficiency
7. Accessories & Replacement Parts
Hesper provides a comprehensive range of accessories to complement our gear pump offerings:
|
Category
|
Products
|
|---|---|
|
Mounting Components
|
SAE/ISO flanges, adaptor kits, mounting brackets, coupling assemblies
|
|
Control Valves
|
Pressure relief valves, flow control valves, directional control valves
|
|
Sealing Solutions
|
Shaft seals, O-rings, gasket kits, sealant compounds
|
|
Filter Systems
|
Suction filters, pressure filters, return line filters
|
|
Drive Components
|
Flexible couplings, gearboxes, electric motor adaptors
|
|
Monitoring Devices
|
Pressure gauges, temperature sensors, flow meters, level indicators
|
8. Technical Specifications Comparison
|
Parameter
|
HP Series
|
BHP Series
|
HA Series
|
HILO Series
|
|---|---|---|---|---|
|
Max Pressure
|
280 bar
|
280 bar
|
250 bar
|
280 bar
|
|
Max Displacement
|
250 cm³/rev
|
11 cm³/rev
|
250 cm³/rev
|
7.8 cm³/rev
|
|
Material
|
Cast Iron
|
Cast Iron
|
Aluminum Alloy
|
Cast Iron
|
|
Bi-directional
|
No
|
Yes
|
No
|
No
|
|
Energy Saving
|
Standard
|
Standard
|
Standard
|
High
|
|
Noise Level
|
70-75 dBA
|
70-75 dBA
|
68-73 dBA
|
70-75 dBA
|
|
Efficiency
|
88-93%
|
88-92%
|
87-91%
|
88-92%
|
|
Contamination Tolerance
|
High
|
High
|
Medium
|
High
|
9. Application Areas
Hesper gear pumps serve a wide range of industries and applications:
-
Industrial Manufacturing: Machine tools, plastic injection molding, hydraulic presses, material handling equipment
-
Mobile Hydraulics: Construction machinery, agricultural equipment, forestry machinery, mining vehicles
-
Marine Industry: Deck machinery, steering systems, lubrication systems, winches
-
Automotive Sector: Power steering systems, transmission systems, lift platforms, testing equipment
-
Energy Production: Power generation equipment, wind turbine systems, hydroelectric plants
-
Aerospace & Defense: Aircraft ground support equipment, military vehicles, missile systems
10. Quality Assurance & Service
At Hesper, we are committed to delivering products of the highest quality through:
-
ISO 9001:2015 certified manufacturing processes
-
Rigorous testing procedures for each product before shipment
-
Comprehensive warranty coverage (12-24 months depending on product line)
-
Global network of authorized service centers
-
Technical support team available 24/7 for troubleshooting assistance
-
Customized training programs for maintenance personnel
