Quality 345BL Hydraulic Boom Cylinder for Excavator Spare Parts 129-7828 1297828 Aftermarket High Quality factory

345BL Hydraulic Boom Cylinder for Excavator Spare Parts 129-7828 1297828 Aftermarket High Quality

Name: 345BL Hydraulic Boom Cylinder for Excavator Spare Parts 129-7828 1297828 Aftermarket High Quality
Brand: GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED
SKU: 345BL
Price: 475.00 USD
Availability: InStock

Place of Origin:China

Brand Name:Belparts

Certification:CE

Model Number:345BL

Minimum Order Quantity:1 PCS

Price:Negotiation

Payment Terms:L/C,D/A,D/P,T/T,TRADE ASSURANCE,WEST UNION,PAYPAL

Supply Ability:100 PCS / Months

Product Details

Model: 345BL

Part Number: 129-7828 1297828

Part Name: Hydraulic Boom Cylinder

Application: Excavator

Condition: New

Quality: Aftermarket High Quality

Warranty: 1 Year

Shipment: DHL FEDEX TNT EMS UPS / Ses / Air

Emission Standards: Stage V

Product Description

345BL Hydraulic Boom Cylinder for Excavator | PN:129-7828 / 1297828 | Premium Aftermarket Replacement

1. Basic Product Info

This reliable aftermarket hydraulic boom cylinder is designed as a direct replacement part for Komatsu 345BL excavators. As a key hydraulic component of the working assembly, it controls the upward and downward movement of the boom, delivering stable performance for general construction, road renovation, quarry operations and large-scale earthmoving tasks. Every product is manufactured in strict compliance with original OEM standards, featuring identical mounting sizes, pin pitch and hydraulic port layout. Users can finish direct bolt-on installation on site without cutting, welding or any extra modifications.

Item	Specification
Product Name	Hydraulic Boom Cylinder
Applicable Model	345BL
OEM Part Number	129-7828, 1297828
Product Grade	Brand New High-Quality Aftermarket
Warranty	12 months against manufacturing defects
MOQ	1 unit, in stock for immediate shipment
QC Standard	ISO9001 certified, full hydraulic pressure and cyclic tests conducted before delivery

2. Core Technical Parameters

345BL Hydraulic Boom Cylinder for Excavator Spare Parts 129-7828 1297828 Aftermarket High Quality

#	Part No.	Description	Qty
All	1297828	CYLINDER & SEAL GROUP-BOOM; (BOOM)	1
1	3B8489	FITTING-GREASE; (FAN AND ALTERNATOR DRIVE)	1
2	9X4598	SEAL; (OD=130.18mm)	4
3	2590755	CYLINDER GROUP-BOOM	1
4	8T6757	PLUG; (PIPE) (1/8-27 NPTF THD)	1
	----	SEPARATE ILLUSTRATION

Spec Item	Data
Bore Diameter	130mm
Piston Rod Diameter	90mm
Working Stroke	1480mm
Rated Working Pressure	31.4MPa
Factory Test Pressure	47.1MPa (1.5 times the rated working pressure)
Barrel Material	High-tensile seamless alloy steel with precision inner honing process
Piston Rod	40CrMo heat-treated steel, 28~32μm hard chrome plating, HRC68~72 with excellent wear and anti-deformation capacity
Matching Seal Kit PN	129-7828K
Working Temperature	-25℃ ~ +85℃
Structure	Double ear lugs equipped with quenched copper wear bushings, built-in buffer structure to absorb operational impact

3. Product Advantages

Dual Part Number Compatibility: Two part numbers are fully interchangeable, perfectly matching the original boom assembly and hydraulic pipelines for steady operation.
Heavy-Duty Reinforced Structure: Thickened cylinder body and connection lugs are built to withstand long-duration loads and frequent impacts in tough working environments.
Strict Pre-Delivery Inspection: Each cylinder passes full-stroke cycle test and high-pressure airtight test to effectively prevent internal and external oil leakage.
Great Cost Performance: It keeps the same durability as genuine parts, helping spare parts dealers and maintenance teams cut procurement costs effectively.
Multiple Shipping Options: In-stock orders can be dispatched within 3 working days. Choose air freight for urgent needs and sea freight for bulk wholesale to control logistics expenses.

4. Supplier Brief

Our factory has devoted itself to producing hydraulic cylinders for Komatsu medium and heavy excavators for over ten years. We supply a complete range of boom, arm and bucket cylinders for 345 series and other mainstream models. All products follow strict quality control systems and are widely exported to aftermarket markets in Africa, Southeast Asia and the Middle East, winning favorable feedback from global clients.

5. FAQ

Q1: Can this boom cylinder fit other models like 345B or 345D?

A: No. Different model versions adopt exclusive part numbers and structural dimensions, which are not interchangeable. Please confirm the excavator model before placing orders.

Q2: Does the standard package include the seal repair kit?

A: The seal kit is not included in standard products. You can purchase the dedicated repair kit separately and get a nice discount for combined orders.

Q3: What packaging is used for long-distance sea transportation?

A: Anti-rust oil is filled inside the cylinder, and anti-rust grease is applied on the piston rod. The whole product is wrapped with waterproof PE film and packed in sturdy export plywood cases.

Q4: Will there be a discount when ordering a full set of working device cylinders?

A: Yes. Full set orders enjoy tiered preferential prices, and we provide consolidated shipment to reduce total logistics costs.

Q5: What after-sales service can I get if oil leakage occurs during the warranty period?

A: Please provide clear photos of the leakage position and excavator serial number. We will arrange free seal replacement and professional remote technical guidance in a timely manner.