23B2711170 , 23B-27-11170 SPACER KOMATSU

Overview

The 23B-27-11170 SPACER KOMATSU is a high-precision machined component designed to maintain optimal spacing, balance, and alignment in Komatsu heavy machinery assemblies. Built for demanding industrial conditions, this spacer ensures mechanical stability, uniform load distribution, and exact axial clearances across high-torque rotating systems.

Engineered to OEM specifications and supplied exclusively by 3GEN Export, this part embodies the quality and precision expected in Komatsu construction equipment. Manufactured using hardened alloy steel and advanced CNC technology, the 23B2711170 SPACER KOMATSU provides unmatched reliability for wheel hubs, transmission couplings, and bearing assemblies where millimeter-level accuracy determines machine integrity.

Function and Role in Komatsu Machinery

In the structural dynamics of heavy machinery, spacers are far more than filler components — they define alignment, spacing, and pressure uniformity between interconnected elements. The 23B-27-11170 SPACER KOMATSU is a crucial part of Komatsu’s mechanical interface, designed to maintain exact tolerances between rotating and static components.

Core Functions

• Maintains Axial Distance: Prevents metal-to-metal contact by keeping precise clearances between bearing races or gear sets.

• Ensures Load Uniformity: Distributes compression evenly to extend component lifespan.

• Prevents Misalignment: Keeps shafts, housings, and assemblies perfectly aligned during dynamic operation.

• Absorbs Shock and Vibration: Damps structural oscillations from torque fluctuations and external loads.

• Enhances Lubrication Efficiency: Keeps proper spacing to maintain consistent lubrication flow through rotating interfaces.

This spacer acts as both a mechanical separator and a stabilizing ring — a seemingly simple part that plays a vital role in overall machine harmony.

Engineering and Material Design

Material Composition

The 23B-27-11170 SPACER KOMATSU is produced from hardened alloy steel (SAE 4140/42CrMo4 equivalent), chosen for its high fatigue strength, dimensional stability, and impact resistance.

• Material Type: High-Carbon Alloy Steel

• Heat Treatment: Induction hardened and stress-relieved

• Surface Hardness: 55–58 HRC

• Surface Finish: Ground and polished to Ra ≤ 0.8 μm

• Coating: Micro-phosphate anti-corrosion layer

• Manufacturing Standard: ISO 9001:2015 and JIS-certified precision machining

Each spacer undergoes a double tempering process, which improves wear resistance and elasticity — critical for assemblies operating under fluctuating pressure and vibration.

Dimensional and Technical Specifications

Compatibility with Komatsu Models

The 23B-27-11170 SPACER KOMATSU is used across several Komatsu heavy machinery systems, including loaders, excavators, and graders. Its standardized geometry allows compatibility with multiple drivetrain and hub assemblies.

Commonly Compatible Models

• Komatsu WA470-6 / WA470-8 Wheel Loaders

• Komatsu WA480-6 / WA500-7 Wheel Loaders

• Komatsu D155AX-6 / D155AX-8 Bulldozers

• Komatsu GD655 / GD675 Series Motor Graders

• Komatsu HM300 / HM400 Articulated Dump Trucks

• Komatsu PC400 / PC450 Excavators

• Komatsu HD465 / HD785 Haul Trucks

Used in both axle and gear-housing configurations, the spacer maintains correct bearing preload and ensures smooth rotational balance — critical for the longevity of Komatsu’s drivetrain systems.

Manufacturing Process

The 23B2711170 SPACER KOMATSU is produced through a carefully controlled multi-stage engineering sequence to achieve absolute dimensional precision.

Step 1 – Forging and Normalizing

A billet of high-carbon steel is hot-forged and normalized to eliminate internal stress. This step improves structural density and prevents deformation under load.

Step 2 – CNC Turning and Boring

Advanced CNC machines are used to shape the inner and outer diameters with micron-level accuracy. The bore and face surfaces are precision-ground to maintain a perfect perpendicular relationship.

Step 3 – Heat Treatment

The spacer is heat-treated in a vacuum furnace to achieve optimal hardness and toughness balance. Quenching and double tempering provide resilience against fatigue and impact loading.

Step 4 – Surface Grinding and Lapping

The component undergoes flat grinding, followed by lapping on both faces to ensure perfect parallelism and surface finish.

Step 5 – Inspection and Coating

Each spacer is measured using coordinate measuring machines (CMM) for runout, concentricity, and dimensional uniformity. A phosphate coating is applied to enhance corrosion resistance and ensure long-term reliability.

Performance Advantages

1. Dimensional Stability: Precision-machined geometry prevents axial play or vibration.

2. High Load Endurance: Can sustain radial and thrust loads in rotating assemblies.

3. Wear Resistance: Hardened surface resists scoring, pitting, and corrosion.

4. Longer Service Life: Reduced maintenance frequency due to enhanced material properties.

5. Consistent Alignment: Keeps bearing and gear housings properly positioned.

6. Reduced Noise and Vibration: Promotes smoother, quieter mechanical operation.

Every 23B-27-11170 SPACER KOMATSU part enhances machine reliability and performance by ensuring perfect internal balance in Komatsu systems.

Applications in Komatsu Equipment

1. Wheel Loader Axle Assemblies

In wheel loaders like the Komatsu WA470 and WA500 series, the spacer is used between hub bearings, maintaining correct preload and ensuring smooth wheel rotation even under heavy material loads.

2. Excavator Swing Mechanisms

In excavators such as the PC400 and PC450, the spacer aligns slewing bearings, preventing misalignment between upper and lower structure assemblies.

3. Transmission Systems

In bulldozers like the D155AX series, the 23B-27-11170 SPACER KOMATSU supports gear spacing inside transmission housings, ensuring proper torque transfer and minimizing friction losses.

4. Differential Housings and Drive Shafts

In dump trucks and graders, the spacer ensures correct gear backlash, maintaining synchronization between planetary gears and shafts.

These applications highlight the spacer’s dual role — as both a mechanical separator and a precision alignment stabilizer.

Quality Assurance and Testing

At 3GEN Export, every 23B-27-11170 SPACER KOMATSU is tested under OEM-equivalent parameters to verify mechanical integrity.

Quality Control Measures

• Dimensional Testing: Using laser-based CMM systems.

• Hardness Testing: Rockwell C-scale verification post heat treatment.

• Ultrasonic Examination: Detects internal voids or micro-cracks.

• Flatness and Parallelism Check: ≤ 0.01 mm deviation per face.

• Load Simulation Testing: Up to 18,000 N axial compression.

Only parts that pass all inspection stages are approved for packaging and global shipment.

Installation and Maintenance

Installation Procedure

1. Preparation: Clean both bearing faces and remove contaminants.

2. Lubrication: Apply anti-seize or thin gear oil film.

3. Placement: Insert the spacer between the target components, ensuring full seating against both surfaces.

4. Torque Application: Assemble and torque the fasteners according to Komatsu’s technical manual for the specific machine model.

5. Post-Inspection: After 10 operating hours, recheck torque and seating position.

Maintenance Tips

• Replace spacer if thickness wear exceeds 0.05 mm.

• Avoid dry assembly to prevent surface galling.

• During overhauls, inspect both spacer faces for pitting or uneven coloration (signs of misalignment).

• Store in a dry environment with anti-corrosion protection.

Proper installation ensures thousands of operational hours of precision and performance.

Benefits of Ordering from 3GEN Export

3GEN Export is recognized globally for supplying OEM-quality Komatsu spare parts with unmatched speed, precision, and reliability.

Key Advantages

• Global Delivery in 5 Working Days

• 1-Year Manufacturing Warranty

• OEM-Equivalent Fit and Function

• Secure Packaging with Anti-Corrosion Protection

• 24/7 Customer Support for Model Compatibility

3GEN Export’s logistics network spans over 80 countries, ensuring rapid delivery to any location — minimizing downtime and maximizing productivity.

Environmental and Manufacturing Ethics

3GEN Export adheres to sustainable industrial practices:

• Recycled Steel Usage: 30% minimum recycled alloy in production.

• Eco-Coating Processes: RoHS-compliant phosphate treatment.

• ISO 14001 Certification: Environmentally managed production.

• Zero-Waste Grinding: Automated filtration and reuse of cutting oils.

By choosing 3GEN Export, clients not only receive superior performance components but also support environmentally conscious manufacturing.

Why the 23B-27-11170 SPACER KOMATSU Is Essential

• Guarantees the precision alignment Komatsu machines require.

• Manufactured from premium heat-treated alloy steel.

• Tested and certified for long-lasting durability.

• Delivered worldwide in 5 working days by 3GEN Export.

• Serves as an OEM-equivalent component, ensuring seamless fit and compatibility.

This spacer is not just a part — it’s a precision-engineered link in the chain of Komatsu’s unmatched reliability.

Conclusion

The 23B-27-11170 SPACER KOMATSU is a testament to mechanical precision and durability. Manufactured by 3GEN Export to OEM-grade standards, it ensures perfect fitment, balanced performance, and long-term reliability for Komatsu’s most demanding machines.

Whether used in wheel loaders, bulldozers, excavators, or dump trucks, this component guarantees correct assembly tolerances and consistent operational balance. Combined with fast global delivery, expert support, and certified quality, it is the most efficient and trusted solution for maintaining Komatsu equipment.

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.