Quality Kubota U35-4 KX033-4 Main Hydraulic Pump RC788-61112 RC788-61113 RC788-61122 RC788-61123 RC788-61124 OEM for Mini Excavator part factory

Kubota U35-4 KX033-4 Main Hydraulic Pump RC788-61112 RC788-61113 RC788-61122 RC788-61123 RC788-61124 OEM for Mini Excavator part

Name: Kubota U35-4 KX033-4 Main Hydraulic Pump RC788-61112 RC788-61113 RC788-61122 RC788-61123 RC788-61124 OEM for Mini Excavator part
Brand: BELPARTS MACHINERY LIMITED
SKU: U35-4 KX033-4
Price: 475.00 USD
Availability: InStock

Place of Origin:Japan

Brand Name:Belparts

Certification:ISO9001 / 2006/42/EC

Model Number:U35-4 KX033-4

Minimum Order Quantity:1PCS

Price:Negotiated price

Payment Terms:T/T,trade assurance,PayPal,L/C,D/P,D/A,Western Union,

Supply Ability:100 PCS / Months

Product Details

Highlight:

Kubota U35-4 hydraulic pump

,

Mini excavator hydraulic pump

,

OEM excavator hydraulic pump

Quality: OEM

Part Name: Hydraulic Pump

Part Number: RC788-61112 RC788-61113 RC788-61122 RC788-61123 RC788-61124

Model: U35-4 KX033-4

Warranty: 1 Year

Type: PVD-0B-24

Shipment: Sea / Air / Express DHL FEDEX UPS

Application: Excavator

Product Description

#	Part No.	Description	Qty
010	RC788-61113	ASSY PUMP,PISTON; Serial No. >=22345; Replacement	1
010	RC788-61112	ASSY PUMP,PISTON; Serial No. <=22344	1
020	RP471-70040	SHAFT	1
030	RP471-70010	ASSY CYLINDER	1
040	RP471-70020	ASSY PISTON	10
050	RC788-69060	PLATE	1
060	RB401-69030	PIN	2
070	RP471-70050	SPRING	1
080	RB411-69020	HOLDER,SPRING	1
090	RC788-69030	GUIDE(SPRING)	1
100	RB401-69310	PIN	1
110	RC788-69040	ROD	1
115	RC788-69070	WASHER	1
120	RP471-70070	WASHER	1
130	RC788-69050	PIN	1
140	RC788-69080	PIN	1
150	RB401-69100	PIN	1
160	RP471-70110	HOLDER, SEAL	1
170	RC401-69020	BEARING,BALL	1
175	RC401-69030	BEARING,NEEDLE	1
180	RB401-69340	SPRING,PLATE	4
190	RC401-69060	RING,SNAP	1
200	04612-00250	CIR-CLIP EXTERNAL	1
210	RB401-69260	PLUG	1
220	RP471-70120	SCREW,HEX SOC CAP	5
230	RC401-69190	PLUG	5
240	RB401-69260	PLUG	1
250	RC401-69230	WASHER,SPRING	5
260	05411-00616	PIN SPRING	1
270	RB401-69370	SCREW,SET	1
280	RC401-69290	NUT,LOCK	1
290	RP471-70000	PUMP,GEAR	1
300	RP471-70130	COUPLING	1
310	RB401-69190	COLLAR	1
320	RB401-69420	BOLT	2
330	RB401-69430	WASHER,PLAIN	2
340	RP471-70032	KIT SEAL; Serial No. >=22345; Not Interchangeable	1
340	RP471-70030	KIT SEAL; Serial No. <=22344	1
350	RB401-69220	GASKET	1
360	RB401-69350	SEAL,OIL	1
370	04810-50750	O RING	1
380	04817-00110	O RING	2
390	04817-00120	O RING	2
400	RB401-69390	WASHER SEAL; ORDER BY REF.No.440; Serial No. <=22344	1
400	RA251-69390	WASHER(SEAL); Serial No. >=22345; Not Interchangeable	1
410	04817-00070	O RING	1
420	04810-50550	O RING	1
430	04817-00080	O RING	1
440	RA251-99390	WASHER; OPTION; Serial No. <=22344	1

RC788-61112 RC788-61113 RC788-61122 RC788-61123 RC788-61124 Main Hydraulic Pump for Kubota U35-4 KX033-4 Mini Excavator

1. OEM Part Number & Machine Compatibility

Original pump model: Nachi PVD-0B-28P-6G3-5243A tandem variable displacement piston pump assembly
Kubota OEM part numbers: RC788-61112, RC788-61113, RC788-61122, RC788-61123, RC788-61124
Fully compatible mini excavator models: Kubota U35-4, KX033-4
All five listed part numbers are upgraded supersession versions with identical mounting structure and internal hydraulic configuration, fully interchangeable for direct replacement on these two machine models

2. Core Technical Specifications

Structure type: Dual variable axial piston main pump integrated with built-in pilot charge gear pump
Main pump displacement: 28 cm³/rev × 2; pilot gear pump displacement: 10.8 cm³/rev
Rated continuous working pressure: 23.5 MPa; preset maximum relief pressure: 27.0 MPa for system overload protection
Rated operating speed range: 2200–2400 rpm, precisely matched to the original D1703 engine configuration of U35-4 and KX033-4
Mounting bolt layout, input shaft spline dimension and hydraulic port positioning strictly comply with Kubota OEM dimensional drawings
Pump housing adopts high-strength ductile iron; internal pistons, valve plates and friction components use quenched wear-resistant alloy steel to extend service lifespan

3. Internal Structure & Functional Introduction

Dual main piston pumps output high-pressure hydraulic oil to drive boom, arm, bucket, travel and swing operational movements
Integrated pilot gear pump supplies stable pressurized oil for pilot control circuits and system hydraulic oil replenishment
Built-in load-sensing power regulator automatically adjusts total pump flow output according to real-time load changes, preventing engine stall during heavy digging and loading operations
Compact tandem integrated layout perfectly fits the limited hydraulic compartment space of U35-4 and KX033-4 compact excavators

4. Product Advantages

Exact 1:1 OEM outer casting dimensions, supporting plug-and-play installation without modification to hydraulic pipelines or chassis mounting structure
Every finished pump undergoes comprehensive hydraulic bench inspection covering pressure stability, flow consistency and internal leakage testing before shipment
Complete maintenance spare parts are held in stock, including overhaul seal kits, piston assemblies, swash plates and valve plates for separate component replacement during repair work
Multiple supersession part numbers fit two machine models, simplifying spare part ordering and inventory management for suppliers and repair workshops

5. Packaging & Global Delivery Details

Input shaft and all hydraulic ports are coated with anti-rust grease and sealed with protective dust plugs
The entire pump is wrapped with moisture-proof plastic film and secured inside export-grade solid wooden crate to prevent collision and moisture damage during long-distance sea or air transportation
In-stock items can be dispatched within 3 to 5 working days after order confirmation
Multiple global shipping solutions are available: international air express, sea LCL/FCL bulk shipment and overland truck transportation for global customers

6. FAQ

Q: Are all five RC788 series part numbers mutually interchangeable?
A: Yes, RC788-61112, RC788-61113, RC788-61122, RC788-61123 and RC788-61124 are iterative upgraded part numbers for the same Nachi PVD-0B-28P pump assembly, fully cross-replaceable for U35-4 and KX033-4.
Q: Can this pump install directly on both U35-4 and KX033-4?
A: Yes, unified mounting sizing and factory-calibrated hydraulic parameters enable direct bolt-on fitting for both models with no extra adjustment or modification required.
Q: Are individual repair spare parts available for this hydraulic pump?
A: Corresponding full overhaul seal kits, piston shoe assemblies, valve plates, swash plates and standalone pilot gear pump spare parts are all available for partial overhaul and individual component replacement work.