Hercules Hitachi 0310504 Wear Ring

Hercules Hitachi 0310504 Wear Ring is a Hercules catalog product available from WQC Parts for hydraulic cylinder, seal kit, pump, motor, valve, and heavy-equipment repair applications.

This listing uses Hercules part number HIT-0310504. Catalog description: RB-STL/PTF-75x80x30.

Product Details

• Hercules part number: HIT-0310504
• Product type: Hydraulic cylinder wear or bearing component
• Reference brand/application: Hitachi
• Approximate weight: 0.315 lb
• Catalog data source: 2026 US Mobile Kit Catalog

Catalog Application Data

• Equipment type: Excavators
• Model or series reference: 650/1
• Catalog page reference: 587, 589, 590, 591, 608

Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for HIT-0310504. It is intended to help restore sealing performance, reduce leakage, and support reliable equipment repair when correctly matched to the application.

Fitment Verification

Before ordering, confirm the HIT-0310504 reference against your OEM reference number, machine model, cylinder location, bore and rod size, pump/motor series, and serial-number range. Manufacturer names and part numbers are used for identification and fitment reference only. If you are unsure, compare the old parts, measurements, and parts-book callout before installation.