Description
Overview:
This Pin for Kubota U50-5 Mini Excavator (OEM No. RD411-66580) is a Genuine Kubota OEM replacement part. It functions as a pivot element within the front working equipment, securing moving joints in the boom, dipper/arm, or bucket linkage. The pin carries digging and lifting loads and maintains alignment and correct clearances when paired with the specified OEM bushes and seals. Manufactured from heat-treated steel with precision-machined bearing surfaces, it matches Kubota tolerances for accurate fit and predictable service life. Suitable for Kubota U50-5 and also used on selected U45S and KX161-3S machines where RD411-66580 is specified. Using the correct OEM pin helps minimise play, maintains breakout and crowd performance, and reduces accelerated bush wear during normal site operations.
Key Features:
- Genuine Kubota OEM replacement pin for assured compatibility.
- OEM reference: RD411-66580 for service identification.
- Direct fit on U50-5, U45S, KX161-3S where RD411-66580 applies.
- Precision-machined to Kubota dimensional tolerances for consistent fit.
- Heat-treated steel for wear and fatigue resistance in linkage duty.
- Supports high radial and shock loads common in digging and lifting.
- Works with matching OEM bushes and seals to control wear.
- Maintains correct linkage geometry and specified service clearances.
- Install using the specified Kubota retainers and locking method.
- Suitable for general excavation, trenching, and utility site work.
- Replaces worn or undersize pins to restore tight joint fit.
Typical Applications:
Used in Kubota mini excavator linkage joints to act as the rotating hinge between boom, arm, and bucket components. Commonly fitted at bucket-to-link, link-to-arm, or arm-to-boom pivot points depending on the machine location specified by RD411-66580. Supports repeated cycles of loading during trenching, grading, and lifting tasks.
Also known as:
Pivot pin, boom pin, dipper pin, bucket pin, hinge pin, linkage pin, excavator pin.
Fits Models:
U45S, KX161-3s, U50-5
Alternate Part Numbers:
RD411 66580, RD411-66580, RD41166580
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