OEM Rotary Joint for Komatsu PC3000 (ref. 997 310 40)
A rotary (centre) joint transfers hydraulic oil between the rotating upper structure and the fixed undercarriage. Rotary joints wear at the internal seals; worn seals cause cross-port leakage and loss of travel or swing function.
Key facts
- Part: Rotary Joint, new replacement for Komatsu PC3000
- Komatsu OEM ref.: 997 310 40 (also written 99731040)
- Interchangeable references: 3 additional Komatsu numbers (listed below), incl. 994 510 40, 934 623 40
- Fits: Komatsu PC3000 (mining excavator)
- Condition: New, to OEM specification
- HD Mining Parts SKU: KMP-RJ-1NDKYO
- Supplied by: HD Mining Parts (worldwide export, quote-based)
Interchangeable reference numbers
This part is interchangeable with the following Komatsu reference numbers (including superseded and alternative references) and can be supplied in place of any of them. Each is shown with and without spaces:
- 994 510 40 / 99451040
- 934 623 40 / 93462340
- 659 008 40 / 65900840
Each part is matched by reference number and technically verified before dispatch, with traceable sourcing and export-ready delivery; availability and lead time on request.
Frequently asked questions
What part is Komatsu OEM number 997 310 40?
It is the rotary joint for Komatsu PC3000; HD Mining Parts supplies a new replacement under SKU KMP-RJ-1NDKYO.
Is 994 510 40 interchangeable with 997 310 40?
Yes, 994 510 40 (99451040) is an interchangeable Komatsu reference for this rotary joint and can be replaced by it.
Request Komatsu OEM ref. 997 310 40, or browse all Hoses Pipes and Fittings and Komatsu PC3000 spare parts, or request a quotation.