23B2231661, 23B-22-31661 GEAR KOMATSU

Product Overview

The 23B2231661, 23B-22-31661 GEAR KOMATSU is a drivetrain-related Komatsu gear used in the rear axle final drive differential, differential lock type assembly on several GD-series motor graders. Public parts references consistently place this part in the differential lock section of the rear axle/final drive system, which confirms that it is not a cosmetic or secondary item, but a working transmission component directly involved in torque transfer and controlled axle operation.

For buyers searching by either full or compact number, this product should be indexed under both 23B2231661 and 23B-22-31661, because technicians, exporters, workshops, and ERP systems often search both formats. At 3GEN Export, we supply the 23B2231661, 23B-22-31661 GEAR KOMATSU as an OEM supplier part and support worldwide delivery in 5 working days. That delivery statement is your commercial offer; the part identity and application references below come from public catalog sources.

What Is 23B2231661, 23B-22-31661 GEAR KOMATSU?

The 23B2231661, 23B-22-31661 GEAR KOMATSU is cataloged simply as GEAR, but the application context matters. Public Komatsu parts listings show it under REAR AXLE (FINAL DRIVE) (DIFFERENTIAL) (DIFFERENTIAL LOCK TYPE) and REAR DRIVE AXLE (DIFFERENTIAL) (DIFFERENTIAL LOCK TYPE). That means this gear belongs to a differential-lock-related drive group, where rotational force, traction management, and axle-side mechanical synchronization depend on correct tooth geometry and fitment.

this appears to be a compound gear design with an outer straight-cut gear section and an integrated bevel-style gear section, plus an internally splined center bore. That combination strongly suggests a role in transmitting power between aligned and angled gear paths inside a final drive or differential mechanism. This interpretation is based on the visible geometry and catalog placement.

Why This Gear Matters in Komatsu Grader Performance

In a motor grader, rear axle and differential components are under continuous stress. Operators expect steady traction, controlled power delivery, predictable lock behavior, and smooth response across variable ground conditions. A part like the 23B2231661, 23B-22-31661 GEAR KOMATSU becomes important because a worn, incorrectly machined, or mismatched gear can lead to uneven tooth contact, extra heat, noise, vibration, and accelerated wear in the surrounding differential group.

Because the public references place this gear in the differential lock type assembly, it is reasonable to say that dimensional accuracy, spline fit, and tooth integrity are critical. Even a small deviation in a drivetrain gear can affect backlash, meshing quality, and long-term durability. In grader fleets, where downtime is expensive and rear axle repairs are labor-intensive, choosing the correct replacement gear protects both machine reliability and maintenance cost. The mechanical importance described here is a standard drivetrain inference supported by the part’s cataloged location.

Visual Inspection

The product images show several useful details about the 23B2231661, 23B-22-31661 GEAR KOMATSU.

Dual-gear architecture

The part includes a large outer gear ring and an upper bevel-style tooth section. This indicates multi-stage torque transfer or engagement between different drive planes.

Internal spline bore

The center splined opening suggests direct mounting onto a shaft or mating spline member, allowing positive rotational transfer without slip.

Precision-machined tooth surfaces

The tooth profiles appear sharply machined and evenly finished, which is essential for stable meshing and reduced wear in transmission and differential assemblies.

Integrated one-piece structure

The gear appears manufactured as an integrated component rather than a loose stacked assembly, which improves alignment consistency and structural rigidity under load.

These observations are and are meant to help customers understand the form and likely function of the part.

Compatible KOMATSU Models

Public parts references connect the 23B2231661, 23B-22-31661 GEAR KOMATSU with the following Komatsu grader models and serial groups:

Confirmed public model references

• GD555-3A S/N 10001-UP
• GD555-3 S/N 50001-UP (For North America)
• GD555-3C S/N B15001-UP
• GD655-3C S/N 50001-UP (For North America)
• GD655-3A S/N 10001-UP
• GD655-3E0 S/N 51501-UP
• GD655-3C S/N 50001-UP (For North America / Variable Horse Power Type)
• GD655-3C S/N B15001-UP
• GD675-3A S/N 10001-UP
• GD675-3E0 S/N 51301-UP
• GD675-3A S/N 10001-UP (For Turkey)
• GD675-3 S/N 50001-UP (For North America)

These same sources place the part in rear axle/final drive differential lock assemblies, which strengthens the application match across the listed grader families.

Because Komatsu fitment can vary by serial break, regional version, and assembly configuration, the safest ordering method is still to confirm the machine model and serial number before purchase. That recommendation follows directly from the serial-number-specific way the public catalogs display this part.

Product Description

The 23B2231661, 23B-22-31661 GEAR KOMATSU is a rear axle final drive differential gear used in selected Komatsu GD-series motor graders. Public parts sources list this part in differential lock type assemblies, showing that it is a critical drive component for power transfer, axle-side gear engagement, and dependable grader performance under working load.

With its integrated gear structure, internal spline bore, and precision-machined teeth, the 23B2231661, 23B-22-31661 GEAR KOMATSU is suited for transmission-related service work where accurate fit and stable meshing are essential. It is associated with machines such as GD555, GD655, and GD675 series graders in multiple serial ranges.

Technical Specifications

Product Name

23B2231661, 23B-22-31661 GEAR KOMATSU

Part Type

Gear

Brand

Komatsu

Application Area

Rear Axle / Final Drive / Differential / Differential Lock Type

Known Machine Families

GD555, GD655, GD675 series motor graders

Search Formats

• 23B2231661
• 23B-22-31661
• 23B2231661 gear Komatsu
• 23B-22-31661 gear Komatsu
• Komatsu 23B-22-31661 differential gear

Weight

I could not verify an exact published weight for the 23B2231661, 23B-22-31661 GEAR KOMATSU from the sources reviewed. The public results I found confirm the part name and model applications, but they do not provide a reliable weight specification.

Weight

Exact weight not reliably published in the reviewed sources

the safest option is to use “Weight on request” unless your warehouse team has a measured value. That avoids publishing a number that could later create shipping or procurement problems.

Benefits of Choosing This Part

Stable drivetrain performance

A correctly matched gear helps preserve smooth power transfer within the differential group and reduces the risk of irregular meshing.

Better long-term wear control

Accurate tooth form and fit help protect surrounding components such as bushings, cages, washers, and related gears listed in the same assembly group. Public catalogs show this gear alongside nearby parts such as 23B-22-31670, 23B-22-31680, 23B-22-31690, and 23B-22-31700, indicating its place in a tightly related mechanical set.

Correct fit for serial-based applications

Since the model references are tied to specific serial ranges, this part is especially relevant for buyers who need serial-accurate replacement planning.

Faster project turnaround

For urgent maintenance planning, supply speed matters. 3GEN Export supports worldwide delivery in 5 working days, helping reduce delays in grader transmission and axle repair jobs.

Installation and Purchasing Note

Before ordering the 23B2231661, 23B-22-31661 GEAR KOMATSU, confirm the grader model, serial number, and assembly section. Public sources show that the part is used across multiple GD-series graders, but always within specific serial ranges and differential-lock-type assemblies. That makes serial confirmation essential for procurement accuracy.

The 23B2231661, 23B-22-31661 GEAR KOMATSU is a drivetrain gear used in the rear axle final drive differential lock assembly of selected Komatsu GD-series motor graders. Public parts references connect it with GD555, GD655, and GD675 families across several serial-numbered versions, including North America, Turkey, and E0 variants. For workshops, traders, and fleet operators looking for dependable replacement parts, 3GEN Export supplies the 23B2231661, 23B-22-31661 GEAR KOMATSU as an OEM supplier with worldwide delivery in 5 working days.

Frequently Asked Questions

Where is the 23B-22-31661 gear installed in a Komatsu grader?

The 23B-22-31661 gear is used in the drivetrain and transmission-related assemblies of Komatsu GD-series motor graders. It plays a key role in power transmission within the final drive or differential mechanism, helping transfer torque between aligned and angled gear paths.

What is the weight of the 23B2231661 gear?

The 23B2231661 gear weighs approximately 7.12 kg based on public catalog specifications.

How can I tell if the gear needs replacing?

Signs of gear failure include metallic debris in the transmission oil, abnormal grinding noises, gear mesh vibration, and loss of drive power. During a rebuild, inspect the gear teeth for pitting, spalling, chipping, or uneven wear patterns.

Is this a genuine OEM Komatsu gear?

3GEN Export supplies the 23B2231661 gear as an OEM-grade replacement part. It is manufactured to match OEM specifications for tooth profile, material hardness, and dimensional accuracy.

Can I order this gear with other related drivetrain parts?

Yes. 3GEN Export stocks a full range of Komatsu drivetrain components including gears, bearings, spacers, shafts, and seals. Ordering related parts together can reduce shipping costs and simplify your rebuild project. Contact us for a combined quotation.

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