23A7015110 / 23A-70-15110 CASE KOMATSU

The 23A7015110 / 23A-70-15110 CASE KOMATSU is a heavy-duty grader drivetrain housing used in the circle drawbar support and circle reverse section of selected Komatsu motor graders. Public aftermarket references identify this part number as a case, while MTK Makina lists it in the circle drawbar support and circle reverse category and tags it specifically for the GD511 grader. A broader MTK parts list also describes 23A-70-15110 as the GD655 “circle box body,” which strongly suggests a circle reverse gearbox housing application rather than a general-purpose casting.

From the images, the part has a thick cast body, a large machined circular opening, a second square flange opening, threaded mounting points, and a deep internal cavity. That geometry is consistent with a case that has to support internal rotating or driven components while also maintaining alignment between adjoining assemblies. In other words, this is the kind of part that does structural work inside a grader transmission or circle reverse mechanism, not a simple cover.

At 3GEN Export, we supply the 23A7015110 / 23A-70-15110 CASE KOMATSU as an OEM supplier for buyers who need reliable machining quality, secure export handling, and worldwide delivery in 5 working days.

Product Overview

The 23A7015110 / 23A-70-15110 CASE KOMATSU belongs to a grader work-equipment drive section, not to the engine or a cosmetic body group. MTK places it in the circle drawbar support and circle reverse family, and UCASLAR places the same number in the power train drive group. Together, those references indicate that the part works in a load-bearing rotating assembly tied to circle drive or circle reverse functions on Komatsu graders.

That matters because a case in this position is more than an outer shell. It is the housing that supports alignment, protects internal components, holds mounting faces true, and helps preserve the operating geometry of the assembly. When a grader is shaping roads, maintaining haul routes, or doing finish work, the circle-related drive system is under repeated torque, shock, and vibration. A poor-quality housing can affect fit, increase wear in nearby components, and create expensive rework during installation.

For search visibility, this part is also commercially important because buyers do not all search it the same way. Some look for 23A7015110, some search 23A-70-15110, and others search by function, using phrases like Komatsu circle reverse case, grader circle box body, or GD511 case. A product page that supports all of those search paths naturally tends to perform better for both Google and answer-based search tools.

What the Images Show

Heavy cast structure

The first thing visible in the photos is the mass of the casting. The body is thick, rounded, and reinforced, which is what you expect from a case that needs to resist movement and support internal components under load. It does not look like a thin housing cover. It looks like the main body of a working assembly.

Large circular machined opening

The large front opening has evenly spaced threaded holes around the flange. That suggests the part is designed to mate precisely with another major component, likely a cover, carrier, or adjoining case section. The machined face around the opening is especially important because this is where alignment and sealing quality usually begin.

Secondary square flange opening

The square side opening, also machined and threaded, suggests a second connection point for a shaft, driven element, support component, or adjoining housing section. On a grader circle reverse assembly, that kind of secondary opening makes practical sense because the case needs to route motion through more than one axis or support point.

Internal seating surfaces

The inner cavity shows machined bearing or seating areas rather than a rough, unfinished inner wall. That indicates the 23A7015110 / 23A-70-15110 CASE KOMATSU is designed to hold critical internal parts in a controlled position, not just surround them loosely.

Application Area

The 23A7015110 / 23A-70-15110 CASE KOMATSU is tied to circle drawbar support and circle reverse references in aftermarket sources. MTK’s tagged product page identifies the part with GD511, while its broader Komatsu grader parts list describes the same number as a GD655 circle-box body. That is useful because it shows the part is consistently associated with the circle drive or reverse housing family across more than one grader platform.

This application area is one of the reasons the part matters so much. A motor grader depends on the circle system to position and control the blade assembly accurately. If the case that supports part of that drive system is worn, cracked, distorted, or poorly machined, the whole assembly can become less stable. In field terms, that can affect blade response, increase wear on related gears, shafts, and bushings, and make a machine feel less precise during grading.

Compatible KOMATSU Models

The clearest public fitment references for the 23A7015110 / 23A-70-15110 CASE KOMATSU point to Komatsu graders rather than dozers or excavators. MTK explicitly links it to GD511 on its product-tag pages, and its general Komatsu grader parts list names the same number as the GD655 circle box body. A 777parts-style search snippet also suggests broader grader-family use, listing models such as GD305A, GD355A, GD505A, GD510R, GD511A, GD521A, GD525A, GD655, and GD675. Because those broader references appear in search snippets and aftermarket pages rather than a single unified factory fitment sheet, they should be treated as guidance rather than the final word.

The safest way to present compatibility is:

GD511
GD655

And, based on broader aftermarket references, possible wider grader-family usage may include:

GD305A
GD355A
GD505A
GD510R
GD511A
GD521A
GD525A
GD675

Because grader circle drive assemblies can vary by serial range, configuration, and running changes, machine model and serial verification should always be done before final order approval. That is especially important when a buyer is comparing an older removed part to a newer replacement or ordering from mixed aftermarket references.

Weight in KG

The strongest published weight reference I found for the 23A7015110 / 23A-70-15110 CASE KOMATSU is from UCASLAR, which lists the part at 29 KG. That figure also fits the visual impression from the product photos: this is clearly a substantial cast case, but not as large as a full transmission housing or major frame component.

For your website, the cleanest presentation is:

Approximate weight: 29 kg.

Technical Details

Part number formats

The part is commonly searched as both 23A7015110 and 23A-70-15110. Using both formats on the page helps capture customers who search by continuous number as well as buyers who search by the hyphenated OEM-style format.

Product type

Public aftermarket sources describe the item simply as a case, while its placement in circle reverse and power train drive group references suggests it functions as the main housing body of a circle-related drive assembly.

System location

The most repeated system references are circle drawbar support, circle reverse, and drive group. MTK’s wider parts list description as a GD655 circle box body is especially useful because it gives buyers a more practical idea of the component’s working role.

Approximate weight

29 kg.

Why This Part Matters in Operation

The 23A7015110 / 23A-70-15110 CASE KOMATSU matters because circle drive and reverse assemblies depend on stable housing geometry. If the case is distorted, poorly machined, or weakened, the surrounding shafts, bushings, covers, and gears cannot work under ideal alignment. On a grader, that affects more than one part. It can affect the consistency of the whole circle mechanism.

In real maintenance situations, buyers usually search for this part when rebuilding a worn circle assembly, replacing a damaged housing, or restoring a grader that has developed looseness or internal wear in the circle reverse section. A sound replacement helps bring the assembly back to a more reliable structural base.

Benefits of a Quality Replacement

Better fit during assembly

A well-made case helps adjoining parts seat more predictably. That means less correction work, less downtime in the workshop, and fewer surprises during installation.

Improved support for internal components

Because this housing is responsible for holding the working geometry of the assembly, quality matters. Good machining and stable cast structure help protect the service life of the components mounted inside it.

Reduced risk of follow-up wear

When the housing is true, the rest of the assembly is more likely to run in proper alignment. That can reduce extra wear on connected shafts, bushings, and mating covers.

Strong e-commerce value

This part has useful online search value because customers look for it by number, by model family, and by practical descriptions such as circle case, circle reverse case, or circle box body. That gives a well-written page more ways to rank.

Installation Guidance

Before installing the 23A7015110 / 23A-70-15110 CASE KOMATSU, verify the grader model and serial range. Public sources support GD511 and GD655 most clearly, with broader grader-family references appearing in aftermarket listings, so exact fitment confirmation is important before purchase.

During installation, inspect the surrounding circle assembly carefully. Check the mating cover, shaft, bushings, gear interfaces, and threaded mounting areas. A new case installed into a worn or misaligned surrounding system may not deliver the full benefit expected from the replacement.

Why Buy from 3GEN Export

At 3GEN Export, we understand that buyers looking for this part are usually solving an urgent grader repair problem. A machine waiting on a circle drive housing can delay roadwork, municipal maintenance, site preparation, and grading operations.

That is why we supply the 23A7015110 / 23A-70-15110 CASE KOMATSU as an OEM supplier and deliver worldwide in 5 working days. Our focus is clear identification, dependable export support, and fast global delivery for heavy machinery spare parts.

Final Summary

The 23A7015110 / 23A-70-15110 CASE KOMATSU is a heavy cast housing used in the circle drawbar support and circle reverse section of selected Komatsu graders. Public sources link it most clearly to GD511 and GD655, while broader aftermarket references suggest additional grader-family use across GD305A, GD355A, GD505A, GD510R, GD511A, GD521A, GD525A, and GD675. UCASLAR lists the part at 29 kg, which is a practical weight reference for quoting, packing, and handling.

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.