The crescent plate of the GPA3-25-E-20-R6.3 internal gear pump for machine tools is a key component that separates the suction and discharge chambers. Wear directly impacts the pump's volumetric efficiency. Compared to external gear pumps, the crescent plate of an internal gear pump has a more precise structure and a larger contact area with the gear meshing surface, making wear more sensitive to the impact on its volumetric efficiency.

 

When the crescent plate wears, the seal between the suction and discharge chambers decreases, causing some high-pressure oil to flow back through the worn area into the suction chamber, resulting in internal leakage. This leakage significantly reduces the actual output flow of the GPA3-25-E-20-R6.3 gear pump, especially under high-pressure operating conditions. Furthermore, deformation or misalignment of the crescent plate exacerbates uneven gear meshing, causing vibration and noise, further weakening system stability.

 

In contrast, leakage in external gear pumps is primarily concentrated in the axial clearance between the gear end faces and the pump body, and crescent plate wear has a relatively minor impact on its volumetric efficiency. Therefore, during the maintenance of the gear pump GPA3-25-E-20-R6.3, it is necessary to regularly check the wear of the crescent plate and restore the performance of the pump by replacing or repairing the crescent plate.

 

As a professional industrial product manufacturer and trader, YOYIK not only provides core equipment accessories for power stations, steel and other industries, but also focuses on the development and promotion of environmental protection equipment and is committed to green energy solutions. Relying on its strong R&D capabilities, the company continuously optimizes its product structure, reduces energy consumption, improves energy efficiency, and practices corporate social responsibility with practical actions. YOYIK's products and services are gradually leading the industry towards a more environmentally friendly and efficient future.

 

Our products include various replacement parts suitable for power plants, as listed below:

#DF-oil pump GPA3-25-E-20-R6.3-DF

stator cooling water pump YCZ50-250A

SERVO MOTOR G403-546A

Actuator A1990

pressure relief valve YSF9-85/80-KJTH

Articulated joint SKVM20

servo valve U270/5Z04

Machinery Seal IMOKG70KZ/7.5F4

solenoid valve DSG-02-2B2-N-A2-20VT

Stop valve J41H-40R 316L

Stop valve J61Y-P52160I

pressure hose SMS-20-915mm-C

Coil 1240-220V

Oring A156.33.01.10-35X3.1

MOOG servo valve MOD-743F003A

Servo valve MOOG-G761-3969B

Three Phase Induction Motor YE2-280S-4 WF2

Accumulator Bladder NXQ-AB-32/20-L-Y

bellows Pressure relief valve BXF-40F

sealing ring OR0240273

Oil Seal HPT-300-340-6S/27/PCS1002002380010-01/420.01/2-204221688

Isolation valve JZPK02

sealing ring TRd8.687.545

Electric gate valve Z962Y-P5410V

pressure relief valve YSF9-35/80-TA

Vacuum stop valve DKJ41H-25

Rubber Bladder for ST EH Oil Accumulator A-10/31.5-L-EH

Fire-resistant oil accumulator NXQ-A 25/20

Filters GL61H-160

Dermal vesicle NXQ-A40/31.5F-Y/F

GAS VALVE FOR ACCUMULATOR NXQ1-L40/31.5/H-CQF

 Metal air supply hose 1-1/2NPT(M)L=1200mm 1.6MPa 304

Electromagnet coil FRD.WJA3.047

Sealing ring DG600-240-07-03

O ring HY.SO.0077.V

Electric gate valve Z941Y DN400 PN.4MPa T400℃

Explosion proof shielded electric pump BA34H-112H4BM-40-25-125

 Pressure pipe joint 1/4NPT*M20*1.5-14(SAFELOK)

oil pump GPA3-25-E-20-R6.3

 

Electric gate valve Z961Y-600LB

sealing ring HB4-56J8-13

pressure relief valve YSF8-25/25-TH

Stop valve J61Y-P55160I SA-182 F22

OPC solenoid valve HQ16.17Z

Hydraulic reversing valve seal assembly MG00.11.19.01(B+S)

Skin NXPN-25L-219-E

Stop valve J61H-250 25

pressure hose SMS-12/15-2438-C

Servo valve G631-3604B

pressure relief valve YSF8-70/130-KJTH

oil pump PVM045ER05CS02AAA28000000A0A

Solenoid valve 321F55505A

Thrust disk nut 3FK5D32M-03-15

Gear pump suction chamber CO46-09-24

pressure relief valve YSF12-25/50-KJTA

bladder NXQB-10/10-L-E

Shaft bearing 2 Pcs /80DV PHV P19183E-00

Solenoid valve SCG531C002MS

sealing ring HB4-56J8-71

Pressure Switch T424T10030XBXFS350/525F

The electromagnetic valve G0911123

Proportional directional valve with feedback KBFDG4-V-3-33C20N-Z-M2-PE7-H7-12

servo valve SFG190X127D129

sealing ring HB4-55J8-56

sealing ring HB4-56J8-86

sealing ring HB4-56J8-165

Electric stop valve J961Y-420I

EH oil main pump oil seal TCM589332

Pump CB-B40

sealing ring HB4-56J8-181

The electromagnetic valve HX-DS55/AC220-V1

Solenoid directional valve 4WE6J62/EW230N9K4/B10

Electric stop valve J961H-300LB

solenoid valve HR3W6DG220NV

electric pump 65AY100

SHAFT BUSHING 2BE1 353 OZY4Z

oil pump GPA3-25-E-20-R6.3

 

DFYLMY-2025-8-1-A