Furukawa
U-PACKING HD500-01040 / HD50001040 — Furukawa Compatible
U-PACKING is a high-strength aftermarket spare part fully compatible with Furukawa hydraulic drifters and rock drills. Precision CNC-machined to original-part tolerances. Contact us for stock and delivery on OEM number HD500-01040.
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U-PACKING — OEM HD500-01040 / HD50001040
- OEM Number
- HD500-01040
- Compatible Brand
- Furukawa
- Part Type
- Drifter
What the U-PACKING does
Sealing elements are the highest-turnover components in a hydraulic drifter. A percussion mechanism cycles thousands of times a minute, so a seal on a moving surface sees more load reversals in one shift than most hydraulic seals see in a year. Static seals hold pressure between housings and covers; dynamic seals ride against a moving piston or shank and carry the whole burden of keeping oil in and drill cuttings, flushing water and rock dust out.
Signs it needs replacing
- Oil weeping or spraying from the joint the seal sits behind
- Falling percussion pressure, or a drifter that will not hold pressure at rest
- Water or flushing air appearing in the return oil, or oil in the flushing line
- Emulsified, milky oil in the tank — a sign water is crossing a barrier seal
Before you fit it
Seals are replaced as a set, not one at a time: the surrounding seals have run the same hours and will fail shortly after. Inspect the sealing surface before fitting — a scored piston or bushing will destroy a new seal in hours, and that is the usual reason a fresh seal leaks again within a week.
General guidance for this class of component. Always work to the torque figures, clearances and service intervals in your machine's own manual.
About This Part
Which machines does U-PACKING (OEM HD500-01040) fit?
It is used on Furukawa hydraulic rock drills and rigs. Send us your machine model together with the OEM number and we will confirm the fit.
Is this an original Furukawa part?
No. This is an aftermarket part manufactured by KY Rock Drill and CNC-machined to original-part tolerances. We are not affiliated with or an authorised dealer for Furukawa; the OEM number is quoted only to identify compatibility.
