Komatsu D40Q403 Cotter Pin
Weight: 0.03 lb
Warranty: SAME AS OEM WARRANTY
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Product Description
The D40 q 403 cotter pin is an essential component in Komatsu machinery, designed to secure various parts and prevent them from loosening or disengaging during operation. This high-quality cotter pin is an OEM Komatsu part, ensuring a perfect fit and reliable performance in your equipment.
Crafted with precision and durability in mind, the D40 q 403 cotter pin is made from top-grade materials, guaranteeing its longevity and resistance to wear and tear. Its robust construction allows it to withstand heavy loads and harsh working conditions, making it suitable for a wide range of applications.
Easy to install and replace, this cotter pin is an excellent choice for maintenance and repair tasks. Its reliable locking mechanism ensures that the connected parts remain securely fastened, providing peace of mind during operation.
The D40 q 403 cotter pin is compatible with various Komatsu models, making it a versatile part to have in your inventory. Whether you are in the construction, mining, or agriculture industry, this cotter pin will prove to be a valuable addition to your equipment.
Trust in the quality and performance of Komatsu parts, a renowned brand in the heavy machinery industry. With a commitment to excellence and customer satisfaction, Komatsu parts delivers reliable and durable products that meet the highest industry standards.
Please note that the
Komatsu Pin Specifications & Fitment
What it is: Heavy-equipment pin designed for tight-tolerance pivot joints where wear control and alignment matter.
- Part number: See title
- SKU: KM-D40Q403
- Typical use: Boom/arm/bucket linkages, work equipment pivots, and high-wear joints.
Key measurements to confirm
To ensure correct fit, match the following measurements to your machineTMs worn component or OEM spec:
- Inside Diameter (ID): ___
- Outside Diameter (OD): ___
- Overall Length: ___
Quality notes
- Designed for consistent clearance and long service life when installed with proper lubrication.
- Replace pins and bushings as a set when wear is uneven to prevent premature failure.
Installation tip
Measure the bore, pin, and bushing after press-fit. Use proper tooling and lubrication, and re-check end-play after assembly.
Need help confirming dimensions? Send your machine model and the measurements above and weTMll verify fitment.
Komatsu maintenance notes (quick guide)
- Early-life greasing: For excavators, Komatsu guidance calls for greasing work equipment pins every 10 hours for the first 50 hours, and greasing again after water work.
- Clearance control: Komatsu linkage manuals commonly specify pinbushing clearance targets and a typical service limit around 1.0 mm for many joints, often managed with shims.
- Tracked machines: For undercarriage track joints, pin/bushing turning is condition- and wear-window dependent; abrasive sites can accelerate wear substantially.
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