Technical Constants & Performance Data
| Parameter | Value / Specification |
|---|---|
| Maximum Operating Pressure | Up to 4,060 PSI (280 bar) |
| Temperature Range | -40°F to 225°F (-40°C to 107°C) |
| Fluid Compatibility | Mineral-based hydraulic oils, Komatsu Super Hydraulic Fluid (KSHV), BIO HFDU fluids |
| Primary Seal Material | Polyurethane (AU), Cast Polyurethane (CU), Nitrile Rubber (NBR) |
| Seal Hardness (Dynamic) | 92-95 Shore A (Polyurethane) |
| Seal Hardness (Static) | 70 Shore A (NBR O-Rings) |
| Design Standard | Manufactured to meet or exceed Komatsu's original specifications for pressure holding, extrusion resistance, and service life in heavy ripping applications. |
Exact Model Compatibility
| Komatsu Dozer Model | Specific Application |
|---|---|
| Komatsu D60P-12 | Ripper (Scarifier) Lift & Pitch Cylinders |
| Komatsu D60E-12 | Ripper (Scarifier) Lift & Pitch Cylinders |
| Komatsu D63E-12 | Ripper (Scarifier) Lift & Pitch Cylinders |
| Note: | This kit is a direct replacement for Komatsu OEM part number 707-98-52130. It is designed specifically for the RIPPER CYLINDERS on the listed -12 series dozer models. Verify your machine's model, serial number, and that you are servicing the RIPPER CYLINDERS, not the blade or tilt cylinders. |
Component Specifications Table
Specific Components Included
Main Piston Seal (U-Cup) – Qty: 1
Rod Seal (Step Seal) – Qty: 1
Wiper/Scraper (Heavy-Duty) – Qty: 1
Buffer Ring – Qty: 1
Wear Ring (Piston) – Qty: 1
Gland Seal Set – Qty: As required
Complete O-Ring & Backup Ring Set – Qty: 1 Set (All necessary sizes for gland, port, and fitting assembly)
Note: This kit provides a complete seal profile set designed to match the exact specifications of the original Komatsu 707-98-52130 ripper cylinder kit. An exploded diagram is included for correct assembly.
Installation decomposition diagram
Machine Secure & Pressure Relief: Park the dozer on firm, level ground. Lower the ripper assembly fully to the ground to relieve all hydraulic pressure. Engage the parking brake and block the tracks securely.
Cleanliness Protocol: Disassembly and assembly must be performed in an impeccably clean environment. Ripper cylinders are exposed to extreme abrasive contaminants; cleanliness is absolutely critical for seal longevity.
Documented Disassembly: Carefully disassemble the ripper cylinder. Photograph and note the exact order and orientation of all components, especially the complex seal stack in the gland.
Critical Metal Inspection: Use precision tools to inspect the cylinder rod for any scratches, gouges, or corrosion from soil contact. Check the cylinder bore (ID) for scoring, pitting, or excessive wear. Damaged metal components MUST be reconditioned or replaced prior to seal installation.
Lubricated Assembly: Soak all new elastomeric seals in clean hydraulic fluid. Lightly lubricate all seal grooves and sliding surfaces before installing new seals.
Proper Tool Use: Use seal installation tools (cone tools, picks, sleeves) to carefully install seals without cutting, stretching, or rolling them over sharp edges.
Torque to Specification: During reassembly, use a calibrated torque wrench. Adhere strictly to Komatsu's specified torque values and sequences for gland bolts or end caps.
System Testing: After assembly, perform a controlled pressure test to validate seal integrity before returning the machine to service.
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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