23B1513131, 23B-15-13131 CAGE KOMATSU

The 23B1513131, 23B-15-13131 CAGE KOMATSU is a transmission-side structural support part used in selected Komatsu grader driveline assemblies. Public parts references connect this number with grader applications including GD505A, GD511A, GD521A, GD525A, GD605A, GD611A, GD621A, GD621R, GD623A, GD625A, GD661A, and GD663A. Public seller data also lists an approximate weight of 6 kg, which is useful for shipping plans and workshop handling.

From the uploaded image, this component clearly looks like a precision-machined support cage rather than a simple flat cover. The reinforced circular body, heavy cast structure, carefully finished inner seating surfaces, and multiple drilled fastening points all indicate a part designed to hold alignment, support adjacent rotating components, and stabilize the surrounding housing area inside a grader transmission assembly.

At 3GEN Export, we present this part as an OEM supply solution and offer worldwide delivery in 5 working days for customers who need dependable export service and fast response.

Product Overview

In a heavy grader transmission, not every important part is a gear or a shaft. Some components do their work quietly by keeping the more visible parts properly positioned. This Komatsu cage belongs to that category. Its main value is not motion. Its value is control. It helps maintain the correct relationship between neighboring components inside a stressed power train environment.

Public catalog references consistently place this part number in grader power train contexts, especially around transmission and output-shaft-related sections. That matters because those are areas where fit, rigidity, and internal positioning are critical. When a support part in that zone loses accuracy, the effects can spread to bearings, shafts, seals, and gear contact patterns.

For buyers searching in different styles, both 23B1513131 and 23B-15-13131 are publicly used as valid writing forms for the same item. Some marketplaces and catalogs also show variations with dots or spaces, which helps confirm that the number may appear in several search formats while still referring to the same part.

What This Cage Does in the Transmission

A cage in a grader transmission is normally there to support order inside a high-load mechanical environment. It can help locate bearings, support surrounding housings, preserve internal alignment, and keep mating components seated correctly under torque and vibration. That is why this part should be thought of as a structural control element rather than a decorative or low-priority item.

When a component of this type is in good condition, the transmission assembly can maintain more stable geometry. That leads to better support for rotating parts, more predictable load distribution, and less risk of unwanted movement inside the housing. When wear or damage appears in a support part like this, technicians may notice indirect symptoms first: abnormal noise, unstable bearing fit, seal issues, uneven wear, or difficulty achieving a correct rebuild feel.

In real workshop terms, the 23B-15-13131 unit is one of those parts that can make the difference between a transmission that simply goes back together and one that goes back together correctly.

Visual Analysis of the Uploaded Part

The uploaded product image gives several useful clues about the design and likely function of this item.

Reinforced outer body

The outside of the component has a strong, thick, cast structure. This kind of form is typical of a part that must resist housing stress and support adjacent assemblies without distortion. A lighter or thinner design would be less suitable for a power train environment where the machine is exposed to shock loads and long working hours.

Precision-machined internal surfaces

The inner bore and seating areas look accurately machined. That usually points to a fit-sensitive job, especially in assemblies involving bearings, retaining surfaces, or closely controlled internal alignment. A part with this kind of finish is not just meant to occupy space. It is meant to hold exact position.

Multiple fastening and access points

The drilled sections and structural bosses suggest firm integration with nearby transmission or case components. These features help the part lock into a larger assembly and keep its position under service load.

Combined cast strength and machined accuracy

One of the most important visual details is the mix of textures. The cast exterior gives mass and strength. The machined areas provide precision. That combination is common in drivetrain support parts because both properties are needed at the same time.

Taken together, the image strongly supports a practical description of the 23B1513131, 23B-15-13131 CAGE KOMATSU as a rigid transmission support element built to preserve internal accuracy and assembly stability.

Why This Part Matters

A grader transmission works in harsh conditions. Even when the machine seems to be moving smoothly, its internal components are dealing with torque transfer, traction changes, directional correction, and continuous operational loading. In such a system, small support errors can become expensive problems.

That is why this cage matters. It helps keep the assembly centered and secure. It supports the environment in which bearings and shafts operate. It helps reduce the chance of fit-related movement inside the housing. It also contributes to the long-term health of nearby components by maintaining proper mechanical order.

Technicians often pay close attention to gears and shafts during a rebuild, but the surrounding support structure deserves the same attention. If a cage is worn, cracked, distorted, or damaged at its machined seats, replacing only the rotating parts may not solve the real issue. A solid rebuild depends on good support geometry, and support geometry depends on components like this one.

Publicly Listed Komatsu Models

Public parts references associate this cage with the following Komatsu grader models:

GD505A

GD511A

GD521A

GD525A

GD605A

GD611A

GD621A

GD621R

GD623A

GD625A

GD661A

GD663A

Public diagram references also place the same part number in output-shaft transmission sections for grader applications such as GD623A-1, which further supports its role in the power train rather than in an unrelated machine system.

As always, the safest practice is to confirm by machine serial number, old part marking, and exact assembly location before final order.

Technical Details

Part name: Cage

Part number: 23B-15-13131

Alternative number style: 23B1513131

Other public writing variants: 23B.15.13131 and 23B 15 13131.

Machine group: Komatsu graders

Application area in public references: transmission, housing, power train, and output-shaft-related sections.

Approximate weight: 6 kg. Public listings use this figure, so it is a practical commercial estimate for storage and shipping.

Practical Service Use

This part is most relevant during transmission inspection, overhaul, or internal repair. In many cases, technicians will examine a support cage when they are already working on bearings, shafts, seals, or neighboring power train elements. That is because these components do not work separately. They work as a system.

During service, buyers and mechanics should look closely at the internal machined seats, the bolt-hole integrity, the overall roundness of the body, and any sign of cracking or impact damage. Even a small loss of precision in a support part can affect the larger assembly. That is particularly true in graders that spend long hours under constant duty on road building, surface correction, and heavy municipal or mining work.

A correct replacement helps restore the mechanical foundation around the rotating elements. That can improve rebuild confidence, reduce repeat disassembly, and support more reliable long-term operation.

Buying Checks Before Ordering

Before buying the 23B1513131, 23B-15-13131 CAGE KOMATSU, it is wise to verify a few points.

Confirm that the removed part number matches either 23B-15-13131 or 23B1513131. Public sources show both formats for the same item.

Confirm that the machine belongs to one of the grader families linked to this reference number in public parts data.

Confirm that the service area is actually the transmission or output-shaft section, since that is where public catalog references place this item.

Compare the removed part visually with the replacement. Pay attention to the bore, outer shape, machined steps, and fastening points.

Use the published 6 kg figure as an approximate logistics weight, not as a final engineering dimension.

Why Buyers Choose 3GEN Export

At 3GEN Export, we understand that customers looking for this part are usually not browsing casually. In many cases, the machine is already open, the workshop is waiting, and time matters. A structural support part like this may not be the biggest item in the assembly, but it can be one of the most important for rebuilding the transmission correctly.

That is why we position this item as an OEM supply option backed by fast export support. We deliver worldwide in 5 working days and serve international customers who need reliable heavy machinery spare parts with clear identification and practical shipping response.

Final Summary

The 23B1513131, 23B-15-13131 CAGE KOMATSU is a grader transmission support component associated in public parts references with power train, housing, and output-shaft assembly contexts. Public model listings connect it to GD505A, GD511A, GD521A, GD525A, GD605A, GD611A, GD621A, GD621R, GD623A, GD625A, GD661A, and GD663A, while public seller data lists an approximate weight of 6 kg.

Based on the image and the catalog context together, this item should be understood as a rigid, precision-supporting transmission cage built to preserve fit, alignment, and assembly stability around critical driveline components. It is the kind of part that deserves careful matching and proper installation, especially in machines working under real grader duty.

3GEN Export supplies this Komatsu cage 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.