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Komatsu PC300-8 / PC300LC-8 Hydraulic Bucket Cylinder | PN:707-01-0H781 | Premium Aftermarket Replacement
1. Basic Product Info
Top-grade aftermarket bucket hydraulic cylinder part number 707-01-0H781 is designed as direct OEM replacement for Komatsu PC300-8 and PC300LC-8 heavy excavators. It controls bucket opening and closing for rock excavation, bulk gravel loading and rugged quarry construction. Produced strictly per original factory drawing, consistent pin spacing, port location and outer dimension allow direct bolt-on mounting without cutting or refitting on site.
| Item |
Specification |
| Product Name |
Hydraulic Bucket Cylinder |
| Applicable Model |
Komatsu PC300-8, PC300LC-8 |
| OEM Part Number |
707-01-0H781 |
| Product Grade |
Brand new premium aftermarket |
| Warranty |
12-month coverage on manufacturing defects |
| MOQ |
Single piece spot order supported |
| Certification |
ISO9001 & CE approved |
2. Technical Specifications
| # |
Part No. |
Description |
Qty |
| G-1 |
(707-01-XS741) |
CYLINDER GROUP,(FINAL COATING) |
1 |
| ---- |
==================== |
|
|
| 1 |
707-01-0H781 |
BUCKET CYLINDER A |
1 |
| 1 |
707-13-15261 |
Cylinder |
1 |
| 2 |
707-76-90490 |
Bushing |
1 |
| 3 |
07145-00090 |
SEAL,DUST (KIT) |
2 |
| 4 |
07020-00000 |
FITTING, GREASE - UPPER HINGE PIN |
1 |
| 5 |
707-58-11370 |
Rod |
1 |
| 6 |
207-63-76170 |
Bushing |
1 |
| 7 |
207-70-72120 |
SEAL,DUST (KIT) |
2 |
| 8 |
07020-00000 |
FITTING, GREASE - UPPER HINGE PIN |
1 |
| 9 |
707-27-15650 |
HEAD,CYLINDER |
1 |
| 10 |
198-63-94170 |
SEAL,DUST (KIT) |
1 |
| 11 |
07179-13126 |
RING, SNAP |
1 |
| 12 |
707-52-90850 |
Bushing |
1 |
| 13 |
707-75-11040 |
RING,SNAP |
1 |
| 14 |
707-51-11030 |
PACKING,ROD (KIT) |
1 |
| 15 |
707-51-11640 |
RING,BUFFER (KIT) |
1 |
| 16 |
707-35-91660 |
RING,BACK-UP (KIT) |
1 |
| 17 |
07000-15140 |
O-RING,(F4350-55A0 -10 ) |
1 |
| 18 |
01010-82085 |
BOLT (KIT) |
12 |
| 19 |
707-88-75310 |
Washer |
12 |
| 20 |
707-36-15260 |
Piston |
1 |
| 21 |
01310-01216 |
SCREW,NYLON |
1 |
| 22 |
707-44-15180 |
RING,PISTON (KIT) |
1 |
| 23 |
707-39-15110 |
RING,WEAR (KIT) |
2 |
| 24 |
707-44-15911 |
Ring |
2 |
| 25 |
07001-05100 |
RING,BACK-UP (KIT) |
2 |
| 26 |
07000-15100 |
O-RING (KIT) |
1 |
| 27 |
707-86-11631 |
Tube |
1 |
| 28 |
207-63-73180 |
Tube |
1 |
| 29 |
07372-21060 |
BOLT,(FOR TREE PUSHER) |
8 |
| 30 |
01643-51032 |
WASHER, (WITHOUT EMERGENCY STEERING) |
8 |
| 31 |
07000-13035 |
O-RING, UPPER COOLER INLET AND OUTLET PORTS |
2 |
| 32 |
707-88-22690 |
Bracket |
2 |
| 33 |
707-88-21420 |
BAND |
2 |
| 34 |
07372-21240 |
BOLT, MOUNT TUBE TO FLYWHEEL |
8 |
| 35 |
01643-51232 |
WASHER, (WITHOUT EMERGENCY STEERING) |
8 |
| 36 |
707-88-10150 |
Clamp |
2 |
| 37 |
01010-81245 |
BOLT, MOUNTING CRANKING MOTOR |
4 |
| 38 |
01643-31232 |
WASHER,(NOT USED WITH EMERGENCY STR.) |
4 |
| 39 |
707-88-33040 |
CAP,SLEEVE (FOR SHIPPING) |
2 |
| 40 |
07371-31049 |
FLANGE, SPLIT - DIVIDER VALVE END |
4 |
| 41 |
07372-21035 |
BOLT, SPLIT FLANGE - TORQUE CONVERTER END |
8 |
| 42 |
01643-51032 |
WASHER, (WITHOUT EMERGENCY STEERING) |
8 |
| ---- |
==================== |
|
|
| K |
707-99-59610 |
SERVICE KIT |
1 |
| Parameter |
Data |
| Bore Diameter |
150mm |
| Piston Rod Diameter |
105mm |
| Working Stroke |
925mm |
| Rated Working Pressure |
37.3MPa |
| Factory Test Pressure |
55.95MPa (1.5 times rated pressure) |
| Barrel Material |
ST52 seamless precision honed alloy steel |
| Piston Rod |
Heat-treated carbon steel with 28~35μm hard chrome plating, HRC68~70 |
| Seal Set |
High-performance PU+NBR composite oil-resistant seals |
| Operating Temperature |
-25℃ ~ +85℃ |
| Design Service Life |
More than 8000 working hours under regular heavy workload |
| Mount Style |
Double lug pin connection with quenched wear-resistant bushings |
3. Product Advantages
- Exact OEM Matching: Full dimensional consistency with original 707-01-0H781, seamlessly connecting to original bucket linkage and hydraulic pipeline.
- Impact-resistant Construction: Reinforced cylinder body and high-hardness piston rod withstand frequent rock impact to avoid bending and early oil leakage.
- Complete Pre-delivery Testing: Every cylinder passes strict pressure tightness and cycling test before leaving factory to eliminate hidden leakage trouble.
- Budget-friendly Alternative: Delivers OEM-equivalent performance with far lower cost to cut customers’ daily maintenance expenditure.
- Multiple Shipping Choices: Ready in warehouse; urgent air shipment takes 3~7 working days, economical sea transport takes 30~40 days.
4. Supplier Introduction
We have focused on Komatsu aftermarket hydraulic cylinder manufacturing over 12 years, covering boom, arm and bucket cylinders for PC-8 series large excavators. Our products are regularly shipped to construction spare parts dealers across Southeast Asia, Africa, Middle East and Europe.
5. Unique FAQ
Q1: Is this bucket cylinder interchangeable with PC300-7 original bucket cylinder?
A: No, mounting center distance and internal stroke differ between PC300-7 and PC300-8, so cross installation is not feasible.
Q2: Do you supply the connecting pins together with cylinder package?
A: Standard package excludes pins, but we can supply matched size pins at extra favorable cost upon buyer’s request.
Q3: What causes most early seal damage for this bucket cylinder?
A: Mixed inferior hydraulic oil and rock grit entering rod surface are top reasons; regular rod cleaning helps extend seal lifespan greatly.
Q4: Can customer inspect goods before shipment for bulk orders?
A: Yes, we support factory inspection or third-party inspection before bulk order dispatch as agreed.
Q5: If I receive damaged cylinder during transit, how to solve?
A: Provide intact outer package and damage photos, we arrange free replacement or partial compensation according to shipping clause.
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