Guangzhou Guoli Engineering Machinery Co., Ltd.
| Payment Terms | T/T,Western Union,MoneyGram |
| Supply Ability | 2000pieces/month |
| Delivery Time | 7 Days |
| Packaging Details | Wooden Case |
| Product Name | Boom Cylinder Assy |
| Product Alias | Excavator Hydraulic Boom Cylinder |
| Part Number | 4628636 4628637 4644670 4638831 |
| Surface Treatment | Piston Rod hard chromium plating Cylinder Tube ，Inner Honed |
| Seal Brand | For Japan NOK and US SKF |
| Seal Material | PU |
| Testing | 100% Pressure Testing Before Delivery |
| Factory Direct Supply | Yes |
| Brand Name | Glparts |
| Model Number | ZX330-3 ZaX330-3 |
| Certification | ISO9001 |
| Place of Origin | Made In China |
View Detail Information
Explore similar products
9185297 4428438 Boom Hydraulic Cylinder for ZX110 ZX110-E ZX110M Excavator Parts
4465565 4465566 Boom Hydraulic Cylinder for ZX160W Equipment Component Parts
9186596 9206321 Boom Hydraulic Cylinder for Hitachi ZX270 Excavator
4643511 4643512 Boom Hydraulic Cylinder for ZX650-3 ZX670-3 ZX650-5 ZX670-6
Product Specification
| Payment Terms | T/T,Western Union,MoneyGram | Supply Ability | 2000pieces/month |
| Delivery Time | 7 Days | Packaging Details | Wooden Case |
| Product Name | Boom Cylinder Assy | Product Alias | Excavator Hydraulic Boom Cylinder |
| Part Number | 4628636 4628637 4644670 4638831 | Surface Treatment | Piston Rod hard chromium plating Cylinder Tube ，Inner Honed |
| Seal Brand | For Japan NOK and US SKF | Seal Material | PU |
| Testing | 100% Pressure Testing Before Delivery | Factory Direct Supply | Yes |
| Brand Name | Glparts | Model Number | ZX330-3 ZaX330-3 |
| Certification | ISO9001 | Place of Origin | Made In China |
ZX330-3 ZaX330-3 Hydraulic Boom Cylinder For Hitachi 4628636 4628637 4644670 4638831
Product Description
Product Name | Excavator Boom Hydraulic Cylinder |
Model | ZX280 ZX280-5G |
| Compatible With Other Models | ZX330-3 ZX330-3-HCMC ZX330-3F ZX330-5G ZX330LC-5G ZX350-3-AMS ZX350H-3 ZX350H-3F ZX350H-5G ZX350K-3 ZX350K-3F ZX350K-5G ZX350LC-3-HCME ZX350LC-3F-HCME ZX350LC-3FAMS ZX350LCH-5G ZX350LC |
Temperature Range | -20-80°C |
Part Number | 4628636 4628637 4644670 4638831 |
| Pressure Range | 21 MPa to 35 MPa |
| Dimensions | Customized |
OEM | Yes |
| Service Stage | Details |
| PreSales Service | Free consultation and technical advice. |
| Customization options for dimensions and performance based on customer requirements. | |
| InSales Service | Fast production and delivery times. |
| Real-time updates on manufacturing and shipment status. | |
| AfterSales Service | Warranty on manufacturing defects. |
| Technical support for installation and maintenance. | |
| Replacement parts available for longterm support. |
ps.If you are looking for other hydraulic cylinders for the ZX330-3, please contact us for a quote
List Of Spare Parts (4628636 4628637)
| Pos | Part No | Qty | Parts name |
| 4628636 | [1] | CYL BOOM (R) | |
| 4628637 | [1] | CYL.;BOOM (L) | |
| 1 | 975001 | [1] | TUBECYL ASSY |
| 1A | +++++++ | [1] | TUBECYL |
| 1B | 4381855 | [2] | PINBUSHING |
| 2 | 975002 | [1] | RODPISTON ASSY |
| 2A | +++++++ | [1] | RODPISTON |
| 2B | 4381855 | [2] | PINBUSHING |
| 3 | 975005 | [1] | HEADCYL |
| 4 | 836104 | [1] | BUSHING |
| 5 | 208504 | [1] | RINGRETAINING |
| 6 | 974306 | [1] | RINGBUFFER |
| 7 | 974307 | [1] | U-RING |
| 8 | 836107 | [1] | RINGBACK-UP |
| 9 | 807904 | [1] | RINGWIPER |
| 10 | A811140 | [1] | O-RING |
| 11 | 962004 | [1] | RINGBACK-UP |
| 12 | 166012 | [12] | BOLTSOCKET |
| 13 | 836108 | [1] | BRG CUSHION |
| 14 | 836109 | [1] | SEALCUSHION |
| 15 | 975006 | [1] | PISTON |
| 16 | 373411 | [1] | RINGSEAL |
| 16A | +++++++ | [1] | RINGSEAL |
| 16B | +++++++ | [1] | O-RING |
| 17 | 492208 | [2] | RINGBACK-UP |
| 18 | 962008 | [2] | RING |
| 19 | 373413 | [2] | RING |
| 20 | 373414 | [1] | SHIM |
| 21 | 867308 | [1] | NUT |
| 22 | 352715 | [1] | SCREWSET |
| 23 | 104404 | [1] | BALL |
| 25 | 4337631 | [4] | RINGWIPER |
| 26 | 975008 | [1] | PIPE |
| 27 | 975009 | [1] | PIPE |
| 28 | 984614 | [2] | O-RING |
| 29 | M341236 | [8] | BOLTSOCKET |
| 30 | 975010 | [1] | BAND |
| 31 | 975011 | [1] | BAND |
| 32 | J901035 | [2] | BOLT |
| 33 | A590910 | [2] | WASHER |
| 34 | 236915 | [2] | HOLDER |
| 35 | 236916 | [1] | BOLT |
| 36 | A590914 | [1] | WASHERSPRING |
| 37 | J75481 | [1] | FITTINGGREASE |
| 100 | 4649049 | [1] | SEALKIT |
*Note:Suitable for different models. Please contact us for the specific part number,part number information is being updated
Company Information
GuangZhou GuoLi Engineering Machinery Co., Ltd., with over 16 years of experience in excavator hydraulic cylinders, is a foreign trade company specializing in a wide range of products, including crawler excavator arm cylinders, boom cylinders, bucket cylinders, cylinder tubes, cylinder rods, custom hydraulic cylinders, seal kits, hydraulic pumps, and electric parts, all designed for various excavator models. Our products have been exported to over 100 countries and regions worldwide.
Factory Tour
Our main product, excavator cylinders, is produced through a complete hydraulic cylinder production line, from design to manufacturing. With over ten years of experience, we’ve upgraded our offerings to multi-stage hydraulic cylinders. We focus on cylinder customization and produce a variety of domestic and imported excavator cylinders. Using advanced CNC lathes, grinders, and assembly equipment, we strictly follow ISO quality standards throughout production.
Piston Rod Production Process
| Feature | Description |
| Material | Tempered steel |
| Surface Treatment | Induction hardened before chrome plating to prevent bending and scratching |
| Rust Resistance | Resists rust for over 100 hours in salt spray tests |
| Production Process | Produced and electroplated in-house |
| Finish | Mirror finish technology |
Automatic Welding Process
| Feature | Description |
| Welding Method | Fully automated welding for consistency and integrity |
| Craftsmanship | Lean welding craft ensures strong joint strength and eliminates defects |
| Weld Seam Quality | Weld seam matches the appearance of original parts |
| Durability | Welded parts are not easy to fall off |
Finished Product Warehouse Display
Exhibition Showcase
Our Presence at Major Exhibitions: 2023 Malaysia & 2024 Shanghai Bauma
Exhibition With Cooperated Clients
Certificates
Certification
FAQ
1.How can I be sure the part will fit my excavator ?
Give us correct model number /machine serial number /any numbers on the parts itself.
Or measure the parts give us dimension or drawing.
2.What material do you use on hydraulic cylinder?
High frequency quenching No.40 manganese steel as rod material so the cylinder rod has better bending resistance.
No.25 manganese steel as tube material ,so the tube has better wear resistance,
High-strength hardened steel as rod head and tube head ,so the cylinder head and rod head more durable.
Name-brand seal kits to reduce the hydraulic cylinder oil leakage rate.
3.How long can an order delivery?
For some often used models of excavator hydraulic cylinder , we have in stock, within 7 days .
For any order less than one container takes about 2 weeks to finish; Order of 1-2 container takes 4 -6weeks.
At busy manufacturing season, manufacturing time needs more which can confirm by discussion.
4.How to pay?
Order less than 3000USD, full payment at order, Order over USD3000 value ,50% deposited in to start,
50% balance paid to deliver,inspection service accepted.
For customized order, 70%payment as deposit ,30% balance paid to deliver.
5.How to delivery?
If you have shipping agent ,we will cooperate with your agent to arrange shipment .
If not , we have good relationships with shipping companies, express suppliers.
For light goods ,by UPS/DHL/TNT(DAP terms) , For heavy goods ,by sea (FOB,CIF,CFR)
Customer Reviews
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller
Year Established:
2004
Total Annual:
3000000-6000000
Employee Number:
200~300
Ecer Certification：
Verified Supplier
Guangzhou Guoli Engineering Machinery Co., Ltd., located in GuangZhou city, benefits from a large construction machinery parts market and convenient transportation access. Our company specializes in producing a range of excavator hydraulic cylinders, including excavator arm cylinders, boom cylinders... Guangzhou Guoli Engineering Machinery Co., Ltd., located in GuangZhou city, benefits from a large construction machinery parts market and convenient transportation access. Our company specializes in producing a range of excavator hydraulic cylinders, including excavator arm cylinders, boom cylinders...
Get in touch with us
Leave a Message, we will call you back quickly!