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 |
| Category | Excavator R55-7 Hydraulic Arm Cylinder |
| Parts Type | R55-7 |
| Part Number | 31M8-51120 31M851120 |
| Installation | Hydraulic System |
| Item Condition | 100% New |
| Excavator Type | Crawler Excavator |
| Warranty | 12 months |
| OEM | Yes |
| Brand Name | Glparts |
| Model Number | R55-7 |
| Place of Origin | Made In China |
| Certification | ISO9001 |
View Detail Information
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Product Specification
| Payment Terms | T/T,Western Union,MoneyGram | Supply Ability | 2000pieces/month |
| Delivery Time | 7 Days | Packaging Details | Wooden Case |
| Category | Excavator R55-7 Hydraulic Arm Cylinder | Parts Type | R55-7 |
| Part Number | 31M8-51120 31M851120 | Installation | Hydraulic System |
| Item Condition | 100% New | Excavator Type | Crawler Excavator |
| Warranty | 12 months | OEM | Yes |
| Brand Name | Glparts | Model Number | R55-7 |
| Place of Origin | Made In China | Certification | ISO9001 |
| High Light | 31M8-51120 Excavator Arm Cylinder ，R55-7 Excavator Arm Cylinder ，Hyundai arm hydraulic cylinder | ||
31M8-51120 R55-7 Excavator Hydraulic Arm Cylinder Assy for Hyundai Parts ISO9001 Approval
| Work Equipment | R55-7 Arm Hydraulic Cylinder Assembly |
| Type | R55-7 |
| PN | 31M8-51120 |
| Warranty | 12 Months |
| Main Material | High-Strength Forged Steel |
Advantage
1. 16+ Years of Expertise
Over 16 years focused on hydraulic cylinders. We know excavator demands and real-world working conditions.
2. OEM-Level Performance
Built to match or exceed OEM specs. Fully compatible with Hitachi, Komatsu, Volvo, Hyundai, Doosan, Kobelco, and more.
3. Complete Model Coverage
Support for both new and older models. Cylinders available for boom, arm, and bucket with regular model updates.
4. Strict Quality Control
100% pressure-tested before delivery. Full in-house production ensures consistent quality from raw material to finish.
Spare parts of ths 31M8-51120 R55-7 hydraulic cylinder
| Pos. | Part No. | Part Name |
| *. | 31M8-51120 | ARM CYLINDER |
| 1 | 31Y1-22891 | TUBE ASSY |
| 2 | 31Y1-22350 | ROD ASSY |
| 3 | 31Y1-16401 | GLAND |
| 4 | S732-055030 | DD2 BUSH |
| K5. | Y200-055011 | SEAL-ROD |
| K6. | Y180-055020 | RING-BACKUP |
| K7. | Y240-055011 | RING-BUFFER |
| K8. | Y110-055011 | WIPER-DUST |
| 9 | Y190-069000 | RING-SNAP |
| 10 | S632-090001 | O-RING |
| 11 | S632-085004 | O-RING |
| 12 | S642-085002 | RING-BACKUP |
| 13 | S642-085003 | RING-BACK UP |
| 14 | 31YC-25020 | RING-CUSHION |
| 15 | 31Y1-24340 | PISTON |
| K16. | S632-040004 | O-RING |
| K17. | S642-040003 | RING-BACK UP |
| K18. | Y450-090000 | SEAL-PISTON |
| K19. | Y300-090100 | RING-WEAR |
| K20. | Y440-090000 | RING-DUST |
| 21 | 31YC-65290 | NUT-NYLON |
| 22 | 31YC-2A040 | VALVE-CHECK |
| 23 | 31YC-99070 | SPRING-COIL |
| K24. | S631-014004 | O-RING |
| 25 | P220-110103 | PLUG-HEX |
| 26 | 31Y1-22911 | PIPE ASSY-R |
| K27. | Y171-015004 | O-RING |
| 28 | S107-080404 | BOLT-SOCKET |
| 29 | S071-022230 | U-BOLT |
| 30 | S201-101002 | NUT-HEX |
| 31 | S411-100002 | WASHER-SPRING |
| 32 | 31YC-12020 | BUSHING-PIN |
| K33. | Y010-050060 | SEAL-DUST |
| 34 | S651-810002 | NIPPLE-GREASE |
Payment term: T/T, Western Union, Money Gram, Paypal
Delivery date: 3-7 days for parts in stock, 7-20 days for parts not in stock
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...
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