21T-30-14230 Undercarriage & Final Drive Seal for Komatsu PC1600-1, PC1800-6

The SPARKLING MACHINERY NEW 21T-30-14230 Seal Photo:

Why Choose the SPARKLING 21T-30-14230 Seal?

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •    - Extreme Durability: Specifically engineered to handle the massive axial and radial loads found in the PC1600 undercarriage.

                                                                                                            •    - Corrosion Resistance: The metal sealing rings are cast from specialty alloys that resist pitting and wear in acidic or saline mining environments.

                                                                                                            •    - Thermal Management: Designed to dissipate heat effectively during long travel distances, preventing the elastomer torics from hardening or losing tension.

                                                                                                            •    - Zero-Leakage Design: The precision-ground sealing surfaces maintain a perfect interface even as the machine maneuvers over uneven, rocky terrain.

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Q&A Section

Q1: Is the 21T-30-14230 seal used in the hydraulic cylinders?

A: No. This part number is specifically for the undercarriage or final drive (travel motor gearbox) area. It is a "heavy-part" seal designed for slow-to-medium rotation under heavy weight, whereas cylinder seals are designed for linear motion.

Q2: What is the main cause of failure for a 21T-30-14230 seal?

A: The most common cause is "packing"—where mud or small rocks become wedged in the undercarriage and force their way into the seal gap. Additionally, long-distance travel ("tramming") without cooling breaks can cause the elastomer components to overheat and fail.

Q3: Does this seal kit include both the metal rings and the rubber torics?

A: Yes, the 21T-30-14230 is typically supplied as a complete group (two metal rings and two rubber torics) required to seal one side of a rotating joint.

About SPARKLING MACHINERY:
   - Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.

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