23B1512110 / 23B-15-12110 SHAFT KOMATSU

The 23B1512110 / 23B-15-12110 SHAFT KOMATSU is a transmission-side shaft used in selected Komatsu motor graders. Public 3GEN snippets place this number in the transmission reverse clutch section, and those same references connect it with grader models including GD611A-1, GD621R-1, GD625A-1, and GD661A-1. Broader aftermarket references also associate 23B-15-12110 with GD605A, GD621A, and GD623A families, which positions this part clearly in the transmission and torque path of Komatsu graders rather than in a general chassis group.

From the images, the shaft has long external splines on both ends, a precision-machined center section, and smaller finished journal areas at the tips. That visual layout is exactly what buyers expect from a drive or clutch-related shaft that must transmit torque through a gearbox or clutch pack while maintaining accurate alignment. The long spline fields suggest positive mechanical engagement with mating hubs or clutch components, while the central polished transition zone indicates a controlled working surface built for rotation and stability.

At 3GEN Export, we supply the 23B1512110 / 23B-15-12110 SHAFT KOMATSU as an OEM supplier for customers who need dependable heavy machinery spare parts, export-grade support, and fast logistics. We deliver all over the world in 5 working days, helping workshops, fleet owners, dealers, and contractors reduce downtime on Komatsu graders.

Product Overview

The 23B1512110 / 23B-15-12110 SHAFT KOMATSU belongs to the transmission and torque section of Komatsu grader drivetrains. A direct 3GENEXPORT result identifies the part as a shaft and shows usage within the TRANSMISSION (REVERSE CLUTCH) group, while 3GENEXPORT lists the same number inside a Komatsu grader transmission assembly and in its transmission-and-torque parts category. That combination matters because it tells the buyer this is not a simple axle pin or support rod. It is a real power-transfer component associated with reverse clutch operation in grader transmission assemblies.

That functional role is important in real field use. A grader transmission shaft works under torsional load, repeated direction changes, clutch engagement cycles, and continuous vibration. If the shaft is worn, incorrectly machined, or dimensionally unstable, the surrounding clutch, carrier, ring gear, bearing, and spacer components can suffer. Public assembly references reinforce this by showing 23B-15-12110 alongside reverse housings, pistons, ring gears, bearings, spacers, and carriers inside the same transmission family.

For e-commerce performance, this part number is also commercially strong because customers search it in multiple ways. Some search 23B1512110. Others type 23B-15-12110. Others search by practical intent, using phrases like Komatsu grader transmission shaft, reverse clutch shaft, or GD611A transmission shaft. A strong product page for 23B1512110 / 23B-15-12110 SHAFT KOMATSU should support all of those paths naturally.

What the Images Show About the Part

Long double-spline design

The most obvious feature is the long spline pattern on both ends of the shaft. This is a strong sign that the part is designed to engage directly with internal drivetrain components rather than simply support rotation at one point. In heavy machinery transmissions, long splines are typically used where dependable torque transfer and accurate hub engagement are required.

Precision-machined center section

The center of the shaft shows a smoother, more refined machined transition between the spline zones. This kind of geometry often indicates a controlled working section where balance, alignment, and rotational stability matter. It also helps distinguish the true contact regions from the transition surfaces.

Finished journals at the tips

One end includes a smaller polished journal, while the opposite end shows a centered hole through the face. These details suggest that the shaft interfaces not only with splined mating parts but also with support or locating features inside the assembly. For buyers comparing a removed transmission shaft to the replacement, these visible details are often just as important as the part number.

Heavy-duty steel construction

The appearance of the part suggests a hardened and machined steel component built for real drivetrain duty. It does not resemble a light control shaft or an external support bar. Everything in the visual design points toward transmission power-transfer use.

Where 23B1512110 / 23B-15-12110 SHAFT KOMATSU Fits

Public Komatsu parts references place this number in the reverse-clutch side of grader transmissions. A direct 3GENEXPORT result connects the shaft with GD611A-1 in TRANSMISSION (REVERSE CLUTCH), another 3GENEXPORT result shows GD621R-1 in the same reverse-clutch context, and a further snippet lists GD625A-1 and GD661A-1 for this same shaft family. 3GEN’s transmission-assembly page also places 23B-15-12110 among reverse housings, reverse pistons, ring gears, clutch discs, plates, bearings, and spacers.

That means the 23B1512110 / 23B-15-12110 SHAFT KOMATSU should be understood as a transmission drive member inside the reverse clutch assembly, not just a general rotating shaft. In practical workshop terms, this kind of part helps transfer torque through the reverse side of the grader transmission while maintaining engagement with splined mating parts. When a shaft in this position wears, the effects can include poor clutch-side engagement, excess backlash, uneven spline wear, and accelerated damage to associated gears, hubs, or carriers.

Because graders work under repeated stop-start cycles, directional changes, and sustained low-speed load, reverse-clutch hardware needs to be dimensionally accurate. A shaft that is even slightly off in fit or machining can affect the service life of the wider transmission group. That is why buyers sourcing 23B1512110 / 23B-15-12110 SHAFT KOMATSU are usually solving a serious repair issue rather than buying a routine consumable.

Compatible KOMATSU Models

The clearest publicly visible model associations for 23B1512110 / 23B-15-12110 SHAFT KOMATSU come from 3GENEXPORT and related aftermarket references. Those sources show the shaft used on grader models including GD611A-1, GD621R-1, GD625A-1, and GD661A-1 in transmission reverse-clutch applications. Another aftermarket snippet expands the picture and links 23B-15-12110 to GD605A, GD611A, GD621A, GD621R, GD623A, GD625A, and GD661A. 3GEN’s assembly context also connects the same shaft to a GD655 transmission parts listing.

Based on those currently available references, the most defensible compatibility list for the 23B1512110 / 23B-15-12110 SHAFT KOMATSU is:

GD605A

GD611A / GD611A-1

GD621A / GD621A-1

GD621R / GD621R-1

GD623A

GD625A / GD625A-1

GD655

GD661A / GD661A-1

Some of those references come from direct parts-book snippets, while others come from related aftermarket assembly or compatibility pages. Because grader transmissions can vary by serial break and regional specification, the safest final purchasing step is still to verify the full machine model and serial number before order confirmation. That is especially important on older graders that may have seen earlier transmission work or mixed replacement history.

Weight in KG

I found conflicting online weight figures for the 23B1512110 / 23B-15-12110 SHAFT KOMATSU. A 3GEN Export product snippet lists the part at 14 kg, while a separate marketplace-style listing shows 3 kg gross. Because the currently visible catalog snippets that confirm fitment do not also provide an authoritative Komatsu catalog weight, the most honest way to present this is: approximate listed weight range online: 3 kg to 14 kg; use 14 kg as a practical quoting reference unless the final supplier packing sheet specifies otherwise.

From the product images alone, the shaft looks more substantial than a 3 kg component, especially considering its length, full-depth splines, and heavy-section steel body. That visual impression is one reason the 14 kg figure appears more practical for logistics planning, but because the published online sources disagree, confirmation before dispatch remains the safest approach.

Technical Details

Part number formats

The two main searchable formats are 23B1512110 and 23B-15-12110. Public marketplace pages and parts references use both, so both should appear on a strong product page.

Product type

Public sources identify the component simply as SHAFT, and its assembly position places it within transmission and reverse-clutch parts.

System location

The clearest location data places 23B-15-12110 in the TRANSMISSION (REVERSE CLUTCH) section of Komatsu grader transmissions.

Related transmission components

3GEN’s assembly page shows the shaft together with reverse housings, ring gears, bearings, pistons, clutch discs, seal rings, spacers, and carriers. That confirms it belongs to a deeper transmission assembly rather than an external linkage or support area.

Approximate weight

Published online weights conflict, with visible marketplace figures of about 3 kg gross and 14 kg. Use that range carefully and confirm shipping weight before dispatch.

Why This Shaft Matters in Operation

A grader depends on smooth, dependable power flow through its transmission. In the reverse-clutch section, a shaft like 23B1512110 / 23B-15-12110 SHAFT KOMATSU is responsible for transmitting torque while maintaining proper engagement with the mating splined parts. If the splines are worn, the shaft is dimensionally off, or the working surfaces are compromised, the rest of the reverse-clutch assembly can suffer. That includes carriers, gears, bearings, and clutch elements that rely on accurate shaft positioning and stable rotation.

In real service conditions, this matters because graders often work at low speed under load, repeatedly changing direction and maintaining precision blade control. The transmission does not live an easy life. When a shaft in the reverse side begins to fail, the machine can become less predictable and the repair cost can spread into neighboring parts. That is why replacing the shaft with a well-machined component is about protecting the full assembly, not just one part number.

Benefits of a High-Quality Replacement

Better fit during assembly

A well-made shaft aligns more predictably with splined hubs, bearings, and reverse-clutch components. That can reduce workshop correction time and lower the chance of forced assembly.

More stable torque transfer

Because the shaft works in the reverse-clutch section, spline accuracy matters. Good engagement supports smoother torque flow and can help reduce vibration or uneven load concentration inside the transmission.

Lower risk of secondary wear

When a shaft seats correctly and runs in proper alignment, surrounding carriers, gears, spacers, and bearings are less likely to suffer avoidable stress. This is one of the biggest real-world benefits for workshops doing deeper transmission work.

Better long-term value

For fleet owners and contractors, the goal is not only to replace one internal part. The real goal is to restore dependable service life across the repaired transmission section. A sound shaft helps support that outcome.

Installation Guidance

Before installing the 23B1512110 / 23B-15-12110 SHAFT KOMATSU, verify the machine model and serial range carefully. Public references support multiple grader families, but the strongest parts-book snippets are serial-specific, especially on GD611A-1, GD621R-1, GD625A-1, and GD661A-1.

During installation, inspect all mating splines, bearings, spacers, snap rings, carriers, and ring gears in the same assembly. 3GEN’s published reverse-clutch parts context shows that this shaft does not work alone; it operates inside a full transmission group that includes several wear-sensitive components. A new shaft installed into a worn clutch-side assembly may not deliver the full benefit expected from the replacement.

It is also good practice to check for scoring, burrs, worn spline engagement, and bearing-seat condition before final assembly. A shaft of this type needs clean, accurate mating conditions to perform properly. After installation, an early operational recheck can help confirm correct seating and stable reverse-clutch behavior.

Why Buy from 3GEN Export

At 3GEN Export, we know that buyers searching for 23B1512110 / 23B-15-12110 SHAFT KOMATSU are usually dealing with active grader downtime or a scheduled transmission rebuild. A machine waiting for a reverse-clutch shaft can delay road maintenance, municipal grading, construction support, and quarry operations.

That is why we supply this part as an OEM supplier and deliver all over the world in 5 working days. Our approach is simple: clear product identification, dependable export handling, and fast supply for heavy machinery spare parts.

Final Summary

The 23B1512110 / 23B-15-12110 SHAFT KOMATSU is a transmission reverse-clutch shaft used in selected Komatsu graders. Public parts references connect it most clearly with GD611A-1, GD621R-1, GD625A-1, and GD661A-1, while broader aftermarket references also associate it with GD605A, GD621A, GD623A, and GD655 transmission assemblies. The currently visible weight figures online are inconsistent, with published listings showing about 3 kg gross in one source and 14 kg in another, so final shipping weight should be confirmed before dispatch.

From the supplied images, the shaft shows the long splines, machined transitions, and heavy-duty steel design expected from a serious drivetrain component. As 3GEN Export, we offer this part as an OEM supplier with worldwide delivery in 5 working days.

Manufactured in Turkey, these products are made using the latest technologies and built to meet the highest international standards. Each machine is a high-quality copy of the original, ensuring durability, precision, and performance that you can rely on for modern construction and metalworking projects.