703-11-95121 Hydraulic Pump Drive Seal for Komatsu PC750-7, PC800-6, PC1100-6

The SPARKLING MACHINERY NEW 703-11-95121 Seal Photo:

Why Choose the SPARKLING 703-11-95121 Seal?

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •    - Heat & Pressure Resistance: Specifically formulated to maintain integrity at the high sustained temperatures found in 100-ton class machine transmissions.

                                                                                                                  •    - Precision Lip Profile: Designed to minimize friction on the rotating shaft, which reduces wear and prevents "grooving" on expensive internal components.

                                                                                                                  •    - Dual-Lip Design: Often features a primary sealing lip for fluid retention and a secondary dust lip to prevent external contaminants from entering the gearbox.

                                                                                                                  •    - OEM Standard Fit: Engineered to the exact 703-11-95121 tolerances for a secure press-fit into the housing.

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Q&A Section

Q1: Where is the 703-11-95121 seal usually located?

A: This part is typically installed on the input or output shafts of the pump drive gearbox (located between the engine and the main hydraulic pumps). It prevents the gear oil inside the drive from leaking out.

Q2: What happens if this seal fails?

A: Failure leads to gear oil loss in the PTO. Because these gearboxes hold a relatively small amount of oil compared to the hydraulic system, a leak can quickly lead to overheating and catastrophic failure of the drive gears and bearings.

Q3: Can this seal be used on a PC1250?

A: While the PC1100 and PC1250 share some DNA, the pump drive configurations can vary. Always verify the 703-11-95121 part number against your specific machine’s serial number before ordering.

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