| Attribute |
Specification |
| COGENG Part Number |
CG-SK-4649050EX |
| Replaces OEM Number |
4649050-EX |
| Application |
Hitachi ZX240-3, ZX250-3 Arm Cylinder |
| Seal Materials |
Polyurethane, Nitrile, PTFE |
| Temperature Range |
-40°C to 110°C |
| Pressure Rating |
Up to 350 bar (5,075 PSI) |
| Fluid Compatibility |
Mineral-based and synthetic hydraulic fluids |
| Kit Contents |
Complete seal set for arm cylinder overhaul |
| Quality Standard |
ISO 9001:2015 |
| Warranty |
12-Month Limited Warranty |
| Performance Specifications |
|
|
| Parameter |
Specification |
Benefit |
| Hardness |
92-96 Shore A |
Superior wear resistance |
| Tensile Strength |
38 MPa |
High mechanical integrity |
| Elongation |
480% |
Excellent flexibility |
| Compression Set |
<12% |
Maintains seal under extreme pressure |
| Parameter |
Specification |
Benefit |
| Hardness |
92-96 Shore A |
Superior wear resistance |
| Tensile Strength |
38 MPa |
High mechanical integrity |
| Elongation |
480% |
Excellent flexibility |
| Compression Set |
<12% |
Maintains seal under extreme pressur |
| Kit Contents Breakdown |
|
|
|
| Component |
Quantity |
Material |
Function |
| Piston Seals |
2 |
Polyurethane |
Main pressure containment |
| Rod Seals |
2 |
Polyurethane |
Rod sealing and pressure holding |
| Wiper Seals |
2 |
Polyurethane |
Contamination exclusion |
| O-Rings |
8 |
Nitrile |
Static sealing applications |
| Backup Rings |
4 |
PTFE |
Anti-extrusion protection |
| Wear Rings |
2 |
Filled PTFE |
Piston guidance and support |
| Gland Seals |
2 |
Nitrile |
Gland assembly sealing |
| Cushion Seals |
2 |
Polyurethane |
End cushion operation |
Parts list
| NO |
Number |
Name |
Qty |
| 1 |
1110501 |
. TUBE; CYLINDER ASSEMBLY |
1 |
| 1A |
- |
.. TUBE; CYLINDER |
1 |
| 1B |
4397790 |
.. BUSHING; PIN |
2 |
| 2 |
974302 |
. ROD; PISTON ASSEMBLY |
1 |
| 2A |
- |
.. ROD; PISTON |
1 |
| 2B |
4397790 |
.. BUSHING; PIN |
2 |
| 3 |
974305 |
. HEAD; CYLINDER |
1 |
| 4 |
836104 |
. BUSHING |
1 |
| 5 |
208504 |
. RING; RETAINING |
1 |
| 6 |
974306 |
. RING; BUFFER |
1 |
| 7 |
974307 |
. U-RING |
1 |
| 8 |
836107 |
. RING; BACK-UP |
1 |
| 9 |
807904 |
. RING; WIPER |
1 |
| 10 |
A811135 |
. O-RING |
1 |
| 11 |
679904 |
. RING; BACK-UP |
1 |
| 12 |
219305 |
. BOLT; SOCKET |
12 |
| 13 |
836108 |
. BEARING; CUSHION |
1 |
| 14 |
962006 |
. SEAL |
1 |
| 15 |
974308 |
. PISTON |
1 |
| 16 |
224106 |
. RING; SEAL ASSEMBLY |
1 |
| 16A |
- |
.. RING; SEAL |
1 |
| 16B |
- |
.. O-RING |
1 |
| 17 |
880605 |
. RING; BACK-UP |
2 |
| 18 |
960302 |
. RING; SLIDE |
2 |
| 19 |
224108 |
. RING; SLIDE |
2 |
| 20 |
352715 |
. SCREW; SET |
1 |
| 21 |
104404 |
. BALL |
1 |
| 22 |
974309 |
. BEARING; CUSHION |
1 |
| 23 |
937410 |
. SEAL; CUSHION |
1 |
| 24 |
492212 |
. STOPPER |
2 |
| 25 |
492213 |
. RING; RETAINING |
1 |
| 27 |
4067901 |
. SEAL; DUST |
4 |
| 28 |
1110601 |
. PIPE |
1 |
| 29 |
1110502 |
. PIPE |
1 |
| 30 |
984614 |
. O-RING |
2 |
| 31 |
M341236 |
. BOLT; SOCKET |
8 |
| 32-39 |
1110503 |
. KIT; BAND |
1 |
| 32 |
1110504 |
.. BAND |
1 |
| 33 |
373419 |
.. BAND |
1 |
| 34 |
J901035 |
.. BOLT |
2 |
| 35 |
A590910 |
.. WASHER |
2 |
| 36 |
309219 |
.. CLAMP; PIPE |
1 |
| 37 |
224115 |
.. BOLT |
2 |
| 38 |
208516 |
.. WASHER; SPRING |
2 |
| 39 |
309021 |
.. HOLDER |
1 |
| 40 |
271312 |
. FITTING; GREASE |
1 |
| 100 |
4649050 |
KIT; SEAL |
1 |
Frequently Asked QuestionsA. 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.
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Q : Paypal. Western Union, Bank Transfer, T/T...
