COGENG 707-99-57160 Arm Bucket Cylinder Seal Kit Komatsu PC200-7

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COGENG 707-99-57160 Premium Arm & Bucket Cylinder Seal Kit for Komatsu PC200-7 Excavators

Name: COGENG 707-99-57160 Premium Arm & Bucket Cylinder Seal Kit for Komatsu PC200-7 Excavators
Brand: Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revol
Availability: InStock
Rating: 5 (1 reviews)

Product name: Komatsu Hydraulic Cylinder Seal Kit
Part No: 707-99-57160,7079957160
Model Number:For PC200
Material:Lron+Rubber
Packing:PP bag inside, carton box outside
Payment Terms:Western Union, L/C, T/T, MoneyGram, D/A, D/P
MOQ:Acceptable trial order
Shipping Mode:By air, by sea, by express(Fedex, UPS, DHL, TNT, etc.)
Place of Origin:Guangdong, China
Brand name:COGENG
CertifiCATEEion:ISO9001
Supply :500PCS

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Desciption

PRODUCT IDENTIFICATION

Parameter	Specification	Testing Standard
COGENG Part Number	COGENG-707-99-57160-AB	Internal Quality Standard QS-513
Replaces OEM Part No.	Komatsu 707-99-57160	Direct OEM Replacement
Primary Seal Material	Polyurethane (PU) Grade 94A	ISO 6072
Rod Seal Material	Nitrile (NBR) with PTFE fill	ISO 6072
Wiper Material	Polyurethane double-lipped	ISO 6194
O-Ring Material	Nitrile (NBR) 70 Durometer	ISO 3601-1
Wear Band Material	PTFE-filled composite	ISO 6811
Backup Ring Material	Nylon 6.6	ISO 1874-1
Temperature Range	-40°C to +110°C (-40°F to +230°F)	ISO 2230
Pressure Rating	Up to 35 MPa (5075 PSI)	ISO 10766-1
Fluid Compatibility	Komatsu Super Hydraulic Fluid, mineral oil, synthetic	ISO 6743-4
Shelf Life	5 years in original packaging	ISO 2230

Component Specifications Table

Arm Cylinder Components

Component	Material	Size Specification	Quantity	Function
Arm Piston Seal	Polyurethane	115mm ID x 8mm width	1	Primary pressure sealing
Arm Rod Seal	NBR with PTFE	80mm ID x 7mm width	1	Dynamic rod sealing
Arm Wiper Seal	Polyurethane double-lipped	80.5mm ID	1	Contaminant exclusion
Arm Wear Bands	PTFE composite	115mm OD x 6mm width	2	Piston guidance

Bucket Cylinder Components

Component	Material	Size Specification	Quantity	Function
Bucket Piston Seal	Polyurethane	105mm ID x 8mm width	1	Primary pressure sealing
Bucket Rod Seal	NBR with PTFE	70mm ID x 6mm width	1	Dynamic rod sealing
Bucket Wiper Seal	Polyurethane double-lipped	70.5mm ID	1	Contaminant exclusion
Bucket Wear Bands	PTFE composite	105mm OD x 6mm width	2	Piston guidance

Common Components

Component	Material	Size Specification	Quantity	Function
O-Rings	Nitrile (NBR)	Various sizes AS568	10	Static sealing
Backup Rings	Nylon 6.6	Various sizes	6	Anti-extrusion support
Gland Gaskets	NBR	Various sizes	2	Gland static seals

Cylinder Technical Specifications

Parameter	Arm Cylinder	Bucket Cylinder	Tolerance
Cylinder Bore	115 mm	105 mm	+0.10/-0.00 mm
Rod Diameter	80 mm	70 mm	+0.00/-0.05 mm
Stroke Length	1,355 mm	985 mm	±3 mm
Gland Nut Torque	480-520 Nm (354-384 ft-lbs)	380-420 Nm (280-310 ft-lbs)	±5%

Compatible Excavator Models

Manufacturer	Model Series	Specific Models	Year Range	Serial Number Prefix
Komatsu	PC200-7	PC200-7 Standard	2001-2004	70001-71500
Komatsu	PC200-7	PC200-7 Dash 3	2002-2005	71501-73000
Komatsu	PC200-7	PC200-7 Dash 5	2003-2006	73001-74500
Komatsu	PC200-7	PC200-7 Dash 7	2004-2007	74501-76000

Decompose pictures

Parts list

NO	Number	Name	Qty
	37C-6C-17200	LIFT CYLINDER, ASSY.	1
1	37C-6C-17A50	• PISTON ROD	1
2	3F1099611	• BUSHING	2
3	37C-6C-11B30	• CYLINDER HEAD	1
4	500466150	• PISTON	1
5	801920113	• NUT	1
6	37C-6C-17B30	• CYLINDER	1
7	855051014	• O-RING	2
	878010285	• KIT, GASKET	1
8	3F1099612	•• GASKET	4
9	855661238	•• RING, SNAP	1
10	855661153	•• GASKET	1
11	855661154	•• GASKET	1
12	855661215	•• O-RING	1
13	855661200	•• RING, WEAR	1
14	855661215	•• O-RING	1
15	855661201	•• GASKET	1
16	855661202	•• PACKING ROD	1

Installation decomposition diagram
Safety Protocol
Completely depressurize hydraulic system
Secure excavator on stable ground with proper supports
Support cylinder properly during disassembly
Wear appropriate PPE including gloves and eye protection
Workspace Preparation
Establish clean, organized work area (ISO 4406 Class 8 or better)
Use lint-free cleaning materials
Verify all kit components are present
Prepare proper seal installation tools

Installation Procedure:
Disassembly & Inspection
Mark components for reassembly alignment
Carefully document seal orientation with photos
Inspect cylinder bore and rod for scratches or damage
Clean all components with recommended solvent
Seal Installation Best Practices
Lubricate all seals with clean hydraulic fluid before installation
Use seal installation cones and tools - avoid sharp instruments
Ensure proper directional orientation of lip seals
Verify complete seating in grooves without twisting
Reassembly Specifications
Gland nut torque: 680-720 Nm (502-531 ft-lbs)
Ensure proper component alignment before final tightening
Check for free movement before system pressurization

Commissioning Procedure:
Initial System Start-up
Cycle cylinder slowly without load 5-10 times
Check for external leaks at all connections
Monitor system pressure gradually
Verify smooth cylinder operation
Performance Validation
Check for hydraulic drift under load
Verify cylinder speed and power match specifications
Monitor fluid temperature and clarity
Conduct operational testing under working conditions

Performance & Durability Data

Performance Parameter	Value	Test Method
Seal Life Expectancy	4,000 operating hours	ISO 7983
Friction Coefficient	0.07-0.11	ASTM D1894
Extrusion Resistance	38 MPa sustained	ISO 1829
Compression Set	<13% after 24h @ 100°C	ISO 815
Abrasion Resistance	>60,000 cycles	ISO 4649

Frequently Asked Questions
A. When will get the items after I place order?
Q. Once your payment is confirmed,we will arrange the goods within 1~4 days; if not in stock, we will inform you before placing the order?

A. If I only know the excavator model, but can not offer parts No.,what should I do ?
Q. If possible, you can send us pictures of old products, nameplate or the size for reference.

A. How can you guarantee the quality??
Q. We will 100% test the goods before delivery. We also support video inspection.

A. How long will it take to delivery to my address??
Q. The normal delivery time is 3-7 days, depending on which country you are in.?

A : Which delivery method will you choose?
Q : By sea, air or express(DHL,Fedex,TNT, UPS, EMS etc.)，Sometimes we will arrange as the customer's demand.

A: What's package? Can you give me the package according my requirement??
Q. We usually packed by standard exported box or carton. And yes we can pack as per your requirement.

A: Can the price be cheaper?
Q: Of course, you will be offered a good discount for a big amount.

A: Why should I choose to buy from you?
Q:Our advantages: 100% quality assurance, develop and manufature follow original ones;Quick response within 24 hours; Small order allowed;Reasonable stock and timely delivery;Neutral packing, customized packing are allowed. Positive customer feedback from abroad market;Excellent after-sales service.
A : Which payment terms can you accept?
Q : Paypal. Western Union, Bank Transfer, T/T...

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About us: Welcome to the official website of GAOGENG(COGENG) has their own high-quality mining machinery components famous factory . We specialize in the production and distribution of top-notch products such as Excavator Solenoid Valve, Pressure Switch, Revolution Sensor, Wiring Harness, Throttle Motor, Oil Pressure Switch, and Water Temp Sensor, specifically designed for renowned brands in the mining industry:
Caterpillar®,JohnDeere®,Komatsu®,Case®,Volvo®,Hitachi®,Sumitomo®,Doosan®,Hyundai®,
Liebherr®,JCB®.

Products: Excavator Solenoid Valve; Excavator Wiring Harness; Excavator Motors; Excavator Pressure Sensor; Excavator Engine Oil Sensor; Excavator Water Temp Sensor; Excavator Control Panel; Excavator Switch Parts

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