External Gear Pump
Your Professional External Gear Pump Supplier
Ningbo Hyleman Hydraulics Co., Ltd is a scientific and innovative company integrating R & D, production, sales and service of high-quality hydraulic pumps, motors, gear reducers and other hydraulic products.Hyleman mainly supply A10V, A4V, A4VG, A11V, A15V, A20V,A2FO,A2FM, A6VM, PV, PVP, PVAC, PVB, PVQ, PVH series piston pumps and motors ; T6,T7,V,VQ, M5A, M5B, M4C, M4D, M4E, 25M, 35M, 45M, 50M series vane pumps and motors;C101/102, G101/102, PGP/PGM, 30/31,50/51, 75/76 series gear pumps and motors.
Why choose us
QUALITY ASSURANCE
Through the honing and innovation of Hyleman people, Hyleman series products can not only perfectly replace the original products, but also realize the seamless exchange and connection of all the parts.
GOOD SERVICE
Hyleman are devoting to provide our clients with the best quality products, and the comprehensive solutions of hydraulics.
PRODUCT APPLICATION
Hyleman series products are widely used in engineering machinery, plastic machinery, metallurgical machinery, environmental sanitation machinery, mining machinery, marine machinery, packaging machinery, port machinery and various hydraulic equipment, which are highly praised by clients.
PRODUCT EXPORT
Through the honing and innovation of Hyleman people, Hyleman series products can not only perfectly replace the original products, but also realize the seamless exchange and connection of all the parts. Hyleman products have been exported to more than 70 countries and regions around the world.
Accumulator charge (single and dual)
Check valve with restrictor
Flow range to 145.4 litres/minute per section
SAE and SI shafts, flanges and porting available
Displacements from 16.2 cc/rev to 64.6 cc/rev
Extensive integrated valve capabilities
Operating pressures up to 200 bar (3,000 psi)
Load sense flow control
Speeds up to 2,400 rpm
Relief with anti-cavitation check
Volumetric efficiencies up to 95%
Priority flow control
Clockwise, counter clockwise and bi-rotational pumps available
Solenoid unloaded relief valve
Product Parameters
|
Attribute |
Specificaations |
|
Material |
Cast/Ductile iron: steel, bronze and others |
|
Types |
Replacement parts for hydraulic gear pump |
|
Function |
Completely interchangeable with original pump |
|
Parts name |
Cylinder block; valve plate, drive shaft, swash plate and more |
|
Processing technic |
Cutting, lathe, machining center, heat treatment, grind: honing, burring and so on |
|
Trademark |
Rhuhe, Neutral label, or according to client's requirement |
Parker P20 Pump SERIES
|
GEAR WIDTH |
CC/REV |
MAX PRESSURE |
MAX RPM |
|
1/2″ |
16.1 |
3000 |
2400 |
|
3/4″ |
24.2 |
3000 |
2400 |
|
1.0″ |
32.3 |
3000 |
2400 |
|
1 1/4″ |
40.4 |
3000 |
2400 |
|
1 1/2″ |
48.5 |
3000 |
2400 |
|
1 3/4″ |
56.5 |
2500 |
2400 |
|
2.0″ |
64.6 |
2500 |
2400 |
PGP20, PGP25, PGP30, PGP31, PGP50, PGP51, PGP75, PGP76, PGP315, PGP330, PGP350, PGP365

Features
Bi-Rotational
1
>>
SAE "B" 2/4 -Bolt Flange
2
>>
SAE "B" 7/8" - 13T Shaft
3
>>
SAE "BB" 1" - 15T Shaft
4
>>
Pressures to 3000PSI
5
>>
Speeds to 2400 RPM
6
Applications - Wrecker/Salt and Sand
7
>>
Three-piece cast iron construction for distribution Fexibility
8
>>
Durable high-strength cast iron body for excellent power-to-weight ratio
9
>>
Cast Iron construction for durability
10
>>
Balanced Thrust Plates minimize friction and leakage
11
>>
Roller bearings for durability
12

- NST20 – flow-sensitive unloading valve.
- NSD20 – flow-sensitive unloading valve & power beyond port for the unloading valve.
- NSH20 – pressure-sensitive unloading valve.
- NDS20 – pressure summation unloading valve.
- NSHD20 – flow and pressure-sensitive unloading valve.
- PSH20 – air operated unloading valve.
















