17A7112611, 17A-71-12611 BRACKET KOMATSU

The 17A7112611, 17A-71-12611 BRACKET KOMATSU is a heavy structural work-equipment part developed for Komatsu D155-series bulldozers. Public parts references connect this number directly to the blade semi-U dozer group on the D155AX-5, and additional listings also associate it with D155A-3 and D155A-5 applications. That fitment pattern shows that this part belongs to the front blade support structure, where alignment, load transfer, and durability matter every working hour.

From the uploaded images, this bracket has a robust T-shaped body with two large bore sections, machined end faces, lubrication points, and a reinforced center housing. Those details indicate a component designed to support a loaded pivot or connection point rather than a simple cover or static support piece. In real working conditions, a part like this is expected to handle repeated push loads, shock, vibration, and contamination from dirt, clay, rock fines, and water.

For that reason, the 17A7112611, 17A-71-12611 BRACKET KOMATSU should be treated as a critical structural item during front-end repair or overhaul work. On a large crawler dozer, even minor looseness in a support bracket can quickly spread into pin wear, bore wear, loss of alignment, and uneven stress on nearby parts. At 3GEN Export, we supply this part as an OEM supplier and deliver worldwide in 5 working days.

What This Bracket Does in the Machine

This part serves as a major support point in the front work-equipment assembly. Public catalog references place it in the blade semi-U dozer section of the D155AX-5, which means it is part of the structure that helps the blade system stay positioned correctly under load. On a bulldozer in this class, that is a serious job, because the blade is constantly absorbing powerful forward pressure and impact from the ground.

When the machine pushes hard material, the force does not remain at the blade edge. It moves through the linkages, pivots, support members, and frame attachments. The bracket’s role is to help maintain geometry in that force path. If this support point is worn or distorted, the blade assembly may no longer move as smoothly or stay as true as it should.

In workshop terms, this means the part is important not only because it is strong, but because it must remain accurately machined. The bore areas, contact faces, and mounting surfaces must hold the intended relationship under repeated load. That is how the surrounding parts are protected from accelerated wear.

Why This Part Matters in Heavy-Duty Service

Large Komatsu dozers operate in conditions that are tough on every front-end component. Overburden, quarry material, blasted rock, compacted soil, and waste-handling ground all create repeated impact and resistance. A support part in this zone cannot simply be thick metal. It must be built to maintain position under dynamic load.

That is why the 17A7112611, 17A-71-12611 BRACKET KOMATSU matters so much during long-term operation. If a bracket in the blade support structure loses its bore accuracy or develops internal movement, the resulting stress rarely stays isolated. A small amount of looseness can begin affecting pins, bushings, collars, and adjoining supports. Eventually the operator may notice uneven blade behavior, unstable movement, or noise under load.

This kind of wear progression is common in heavy equipment. The most visible damaged part is not always the first one that failed. Sometimes a pin or bushing is replaced, but the real cause is hidden in the bracket or support body that no longer holds correct alignment. Replacing the worn support component at the right time helps prevent repeated labor and unnecessary follow-up repairs.

Design Features Visible in the Uploaded Images

Reinforced structural body

The part shown in the images has a thick central body that blends into two cylindrical support zones. This layout spreads stress over a larger area and reduces the chance of concentrated cracking or localized distortion.

Large machined bores

The end sections appear precisely machined. That matters because a heavy work-equipment bracket often supports high-load rotating or pinned connections. Good bore integrity helps protect both fit and service life.

Precision-machined interfaces

The machined faces visible in the images suggest that connected parts must sit squarely and clamp correctly. This type of accuracy is essential when the bracket is part of a pivot-support or blade-structure connection.

Lubrication points

Grease fittings are visible on the body. That indicates the assembly is designed to work in a lubricated environment, which is common when a part operates around loaded moving supports. Clean, consistent lubrication helps reduce friction and flush out contamination.

Fitment and Komatsu Model Information

The strongest publicly visible fitment reference connects this part number to the D155AX-5 S/N 70001-up machine in the blade semi-U dozer group. Other public listings also associate the same number with D155A-3 and D155A-5 bulldozers.

Commonly listed applications include:

Compatible models

Komatsu D155AX-5 S/N 70001-up
Komatsu D155A-3 S/N 60001-up
Komatsu D155A-5 S/N 65001-up
Komatsu D155A-5 extreme cold terrain specification

Because Komatsu work-equipment arrangements can vary by serial range, blade type, and machine specification, it is still best to confirm the serial number before finalizing an order. That is especially important on older machines that may have been rebuilt, modified, or repaired previously.

Part Number Variations for Search and Ordering

For better online visibility and easier parts identification, buyers often search this item in more than one format. The most useful search variations are:

17A7112611
17A-71-12611
17A 71 12611
Bracket Komatsu 17A-71-12611
Komatsu D155AX-5 bracket 17A7112611

Using both joined and separated formats helps this product appear in different catalog systems and user search habits.

Weight Information

Published third-party listings do not show one perfectly consistent figure. One source lists the part at 72.000 kg, another lists 75 kg, and another commercial listing shows 74.85 kg package weight. Because of that variation, the most honest presentation is to describe the part as approximately 74–75 kg, with a published range of 72–75 kg depending on listing method and packaging basis.

Estimated weight

Approx. 74.0–75.0 KG

For export planning, this places the bracket in the heavy structural-parts category and makes proper packaging important.

Technical Overview

Product name

17A7112611, 17A-71-12611 BRACKET KOMATSU

Brand

Komatsu

Part type

Heavy structural bracket

Main application area

Front blade support / blade semi-U dozer group

Known machine family

D155A series
D155AX series

Estimated weight

Approximately 74–75 KG

Supply note

3GEN Export OEM supplier, worldwide delivery in 5 working days

Typical Reasons for Replacement

A bracket like this is usually replaced for one or more of the following reasons:

Bore wear

If the internal support area wears beyond tolerance, the connected part may begin moving incorrectly.

Loss of alignment

Distortion or wear can shift the relationship between support points and create uneven loading.

Damage after impact or long service

Dozers working in harsh conditions can develop structural wear over time, especially around loaded blade components.

Front structure overhaul

During a full repair, workshops often replace the bracket to restore overall system accuracy rather than reusing a questionable support body.

Practical Benefits of a Properly Fitted Bracket

A correctly made and properly installed support bracket helps the machine in several ways. First, it supports stable blade geometry, which matters during grading, pushing, and heavy cutting. Second, it protects connected pins, bores, and support members from abnormal movement. Third, it contributes to a smoother, more controlled load path through the front frame and work-equipment structure.

On large bulldozers, these benefits are not small details. The front equipment works under tremendous force. Any component that stabilizes that structure has a direct effect on service life and operating reliability.

Inspection Points Before Installation

Before installing this part, the repair team should inspect the surrounding assembly carefully.

Check mating pins and bore-related parts

A new support part cannot perform correctly if the adjoining hardware is badly worn.

Inspect contact faces

Any burrs, damage, or contamination on mounting surfaces can affect clamping accuracy.

Verify lubrication passages

Since the design includes grease points, proper flow should be confirmed before returning the machine to service.

Confirm serial-number compatibility

Public listings provide strong fitment guidance, but serial-number confirmation remains best practice.

Why This Part Is Important for D155-Series Dozers

Komatsu D155 bulldozers are large, hard-working machines built for demanding ground conditions. Their blade assemblies handle substantial pressure every day, especially in mining support, site preparation, quarry work, and large-scale earthmoving. A support part in the front structure therefore plays a larger role than its simple name may suggest.

This bracket is one of those components that often gets less attention than cylinders, pins, or cutting edges, yet it has a major influence on the accuracy and stability of the entire front arrangement. When the support structure is correct, the machine works better. When it is worn, many related parts begin suffering earlier than expected.

Why Buy from 3GEN Export

At 3GEN Export, we know that structural Komatsu parts are often ordered during urgent repair planning. Buyers are usually trying to reduce downtime, match the correct number quickly, and avoid delays in shipping or fitment confusion.

We supply the 17A7112611, 17A-71-12611 BRACKET KOMATSU as an OEM supplier for international customers who need dependable spare-parts support. We also deliver worldwide in 5 working days, helping contractors, workshops, dealers, and fleet managers keep repairs moving without unnecessary delay.

Conclusion

The 17A7112611, 17A-71-12611 BRACKET KOMATSU is a heavy front-structure support part used in Komatsu D155-series bulldozer blade equipment. Public references most clearly connect it to the D155AX-5 blade semi-U dozer group and also associate it with D155A-3 and D155A-5 applications. Published weight figures place it in the low-to-mid 70 kg range, making approximately 74–75 KG the safest estimate for sales use.

Based on both catalog references and the uploaded images, this is a reinforced, precision-machined support component made for severe working conditions. It helps maintain front-end alignment, support loaded connections, and protect surrounding parts from abnormal wear. For fast supply, 3GEN Export provides this Komatsu bracket 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.