INAN MAKINA MTB-170 Seal Kit (CFW NOK) — Complete Hydraulic Rock Hammer Oil Repair Kit for Excavator Breakers

Product summary for : The INAN MAKINA MTB MTB170 MT-170 seal kit with CFW NOK seals is a comprehensive hydraulic rock hammer oil repair kit engineered for excavator hydraulic breaker maintenance and rebuilds. This MTB-170 seal kit contains critical O-rings, piston seals, rod seals and wear parts designed to restore sealing performance on MTB/MT-170 breakers, reducing oil leaks, restoring impact efficiency and extending service life. Use this kit for onsite repairs, preventive maintenance, or workshop overhauls to keep hydraulic breaker spare parts reliable under harsh construction conditions. (Hydraulic breaker fundamentals on Wikipedia)

How to choose the right seal kit for an MTB-170 hydraulic breaker?

What compatibility checks should I perform before buying a seal kit?

Confirm your breaker model and serial range—this MTB-170 seal kit is specified for INAN MAKINA MTB/MT-170 series; match the model stamped on the tool to avoid mismatched diameters or profiles. Also verify whether your breaker uses standard NOK/CFW-style seals by checking existing seals or OEM parts catalogue to ensure O-ring cross-sections and piston diameters match the replacement kit.

What materials and seal types matter for durability?

Choose kits with high-wear elastomers (NBR/polyurethane) and manufacturer-grade components such as CFW NOK seals; nitrile (NBR) provides good oil resistance, while polyurethane parts resist extrusion under pressure. For guidance on nitrile properties refer to the nitrile rubber technical overview (Nitrile rubber materials).

How to verify kit completeness before installation?

Inspect the kit contents against a parts list: piston seals, main rod seals, guide rings, backup rings, O-rings, and any special bushings or spacers. A complete MTB-170 seal kit avoids repeat disassembly; missing items (like backup rings) can cause rapid failure, so cross-check each seal against the breaker drawing or the kit invoice.

Why do hydraulic breaker seals fail and how can I prevent it?

What are the most common root causes of seal failure in breakers?

Seal failure typically results from contamination, excessive temperature, or mechanical damage. Contaminated hydraulic oil accelerates abrasion and extrusion; follow ISO cleanliness recommendations (see ISO 4406 fluid contamination standards) to minimize particle-induced wear.

How does oil cleanliness affect MTB-170 seal life?

Particles cause micro-cutting and scoring on sealing surfaces; maintain hydraulic oil cleanliness to ISO 4406 codes recommended by your breaker OEM. Regular filtration and fluid sampling extend the life of seals and reduce frequency of oil repair kit replacements.

What operational practices reduce seal wear?

Avoid idling under full pressure, bleed trapped air, and maintain recommended hydraulic pressure and flow settings. Proper tool alignment, using correct chisel selection, and controlled blow rates reduce shock loads that can deform seals and lead to premature leakage.

How to install the MTB-170 seal kit correctly for longest service life?

What preparatory steps ensure a clean, successful rebuild?

Work in a clean environment, use lint-free wipes, and inspect bores/pistons for scoring. Replace worn pins or bushings when needed; polishing or light honing of mating surfaces ensures the new seals seat correctly and prevents rapid wear.

What tools and torque specs are essential during installation?

Use soft jaws or plastic protectors to avoid scratch damage to rods; apply assembly lubricant compatible with hydraulic oil so seals slide into place without rolling. Follow breaker-specific torque values for housing bolts—consult the breaker service manual or the OEM parts list for exact figures to avoid distortion.

How to test after installation to confirm repairs?

Perform a pressure and leak test at idle and under load; check for external oil leaks, unusual noise, or reduced impact energy. A proper rebuild should restore normal blow rate and eliminate visible oil seepage at the tool and housing joints.

How often should I replace the seal kit on my hydraulic rock hammer?

What maintenance interval is recommended for MTB-170 breakers in general use?

Typical preventative replacement is every 500–1,000 operating hours depending on jobsite conditions; severe environments (abrasive dust, high shock loading) push services toward the lower end. Track operating hours and inspect seals during scheduled service windows.

How to recognize early warning signs that seals need replacement?

Look for oil seepage at the bushes or housing, reduced impact power, increased hydraulic oil consumption, or abnormal heat at the breaker. Early replacement with a full oil repair kit prevents collateral damage to pistons and cylinders.

Can partial repairs extend the life or is a full kit required?

Partial repairs (single O-ring replacement) may be temporary; for reliable restoration, a full MTB-170 seal kit ensures all mating seals are replaced together to prevent mismatched wear rates and repeated downtime.

Why trust Huilian Machine: Founded in 2005, Huilian Machine is a professional OEM supplier and leading manufacturer of excavator breaker parts in China, exporting to over 90 countries. Our MTB-170 seal kits use High Quality components and are backed by experienced R&D and QC teams—learn more about our range on the Huilian site (Guangzhou Huilian Machinery Co., Ltd.).

Related technical references: For general hydraulic breaker design and operation, see the hydraulic hammer overview on Wikipedia (Hydraulic hammer (breaker) overview); for fluid cleanliness and contamination control, see ISO 4406 guidance (ISO 4406 cleanliness standard); for seal material properties, consult nitrile rubber references (NBR material information).

Purchase the compatible MTB-170 seal kit directly from our product listing: INAN MAKINA MTB-170 seal kit (CFW NOK) product page.

Contact for sales and technical support

For pricing, shipping, or technical fitment verification contact Huilian: Email service@huilianmachine.com or call +86 188 1917 0788. Our team can confirm compatibility and provide installation guidance.

Frequently Asked Questions

What is included in the MTB-170 seal kit?
Direct answer: The kit includes piston seals, rod seals, guide rings, O-rings, backup rings and wear components needed for a full oil repair. Supplement: Exact item list varies by batch—check the product packing list or contact Huilian for part-by-part confirmation.

How often should I replace seals on an MTB-170 breaker?
Direct answer: Replace seals every 500–1,000 operating hours depending on conditions. Supplement: Severe abrasive or high-impact jobs require more frequent replacement near the 500-hour interval for best reliability.

Can I use third-party seals instead of CFW NOK in this kit?
Direct answer: You can, but OEM-grade CFW NOK seals typically offer better compatibility and wear life. Supplement: Using non-specified materials may void expected life performance and increase leak risk under high-pressure cycles.

How do I know this kit fits MT-170 serial models?
Direct answer: This product is specified for INAN MAKINA MTB/MT-170 series; verify model and serial on your breaker housing. Supplement: Provide serial/model to Huilian for a definitive fit check—include photos for faster validation.

Is professional installation necessary for the MTB-170 seal kit?
Direct answer: Professional installation is recommended to ensure correct seating and torque. Supplement: Experienced technicians reduce risk of damaged seals and ensure correct pressure testing post-rebuild.

How long will a proper rebuild with this kit extend my breaker life?
Direct answer: A complete rebuild with new seals typically restores expected service life for 1,000+ hours under normal conditions. Supplement: Longevity depends on maintenance, oil cleanliness and excavation environment—follow preventive schedules for best outcomes.

Need help? Contact Huilian Machine for ordering or technical support at service@huilianmachine.com or +86 188 1917 0788.