Komatsu Bucket Link Pins & Bushings
Komatsu bucket link pins and bushings are high-wear parts at the bucket end of the machine, where breakout force, impact, side load, and abrasive material meet. Use this WQC Parts hub to research aftermarket Komatsu bucket linkage pivot parts and avoid ordering only by description.
Bucket Linkage Parts That Must Match
Bucket Pins
Pins at the bucket ears or bucket-to-linkage locations must match diameter, length, retainers, and grease path.
H-Link and Dogbone Link Pivots
Linkage parts can vary by machine series, bucket style, arm length, and coupler or attachment setup.
Bushings and Seals
Bushings, dust seals, spacers, and retainers should be checked with the pin so the complete pivot fits properly.
Why Bucket-End Wear Gets Expensive
The bucket end often wears faster than upper pivots because it works in dirt, rock, water, demolition material, and repetitive impact. Once the linkage loosens, it can egg-shape bores, damage bucket ears, wear the H-link, and reduce operator control.
- Confirm whether the machine uses a standard bucket, quick coupler, hammer bracket, or special attachment.
- Check both sides of the linkage; one worn bushing can quickly damage a new pin.
- Do not ignore rattling, grease loss, visible movement, or uneven wear marks around the bucket linkage.
- Use serial-aware fitment rather than assuming one bucket-link part fits every model in a family.
Related Repair Paths
For bucket-end repairs, it is often useful to compare the bucket link parts with arm pins, boom pins, seals, and hydraulic cylinder repair parts.
Common Questions
Why does the bucket linkage get loose so quickly?
The bucket end sees impact, side load, contamination, and frequent cycling. Poor lubrication or a worn bore can accelerate wear.
Can WQC Parts help identify a bucket link part without the part number?
Yes. Send the model, serial number, pivot location, measurements, and clear photos. A part number is still the best confirmation when available.
Need help confirming fitment? Send WQC Parts the Komatsu part number, machine model, serial number, and pivot location. We can help narrow the correct aftermarket replacement path before you order.