23A-23-11240 DRUM – Komatsu Motor Grader Brake Drum

The 23A-23-11240 DRUM is a genuine-specification brake drum designed for Komatsu motor graders, serving as a critical component in the tandem drive brake system. This drum provides the friction surface required for reliable braking performance in heavy grading operations.

What is the 23A-23-11240 Drum and why is it important?

The 23A-23-11240 DRUM is a cast-iron brake drum used in the service brake system of Komatsu motor graders. It houses the brake shoes and provides a durable friction surface that converts kinetic energy into heat during braking. Without a properly functioning drum, stopping distances increase and brake fade becomes a safety risk. This OEM-spec drum ensures consistent braking torque and long service life under demanding conditions.

Which Komatsu models are compatible with the 23A-23-11240 Drum?

Based on verified OEM parts catalogs and aftermarket listings, the 23A-23-11240 DRUM is compatible with the following Komatsu motor grader models:

• Komatsu GD511A-1
• Komatsu GD521A-1 (S6D105-1 engine installed)
• Komatsu GD611A-1
• Komatsu GD661A-1
• Komatsu GD510R-1 (S/N 15001-UP)

These models share the same tandem drive gear and chain arrangement, making the 23A-23-11240 drum a direct replacement. Always verify your machine’s serial number against the OEM parts catalog before ordering.

What are the technical specifications of the 23A-23-11240 Drum?

When should you replace the 23A-23-11240 Drum?

Replace the brake drum when you observe any of the following failure symptoms:

• Brake pedal pulsation – indicates drum out-of-round or uneven wear.
• Excessive brake fade – drum surface glazed or heat-checked.
• Visible scoring or grooves deeper than 1.5 mm (0.060 in).
• Cracks or heat cracks on the friction surface.
• Brake shoe contact pattern uneven – drum may be tapered.
• Reduced braking performance – longer stopping distances.
• Noise during braking – squealing or grinding sounds.

Always inspect the drum during brake shoe replacement. If the drum is within service limits but shows minor wear, it can be machined. However, replacement is recommended when wear exceeds OEM specifications.

How does the 23A-23-11240 Drum integrate with the brake system?

The drum mounts to the tandem drive axle hub and rotates with the wheel. Inside, brake shoes press outward against the drum’s inner surface when the brake pedal is applied. The friction generates heat, which the drum’s mass absorbs and dissipates. Proper drum condition ensures even shoe contact, consistent braking torque, and minimal fade. The 23A-23-11240 drum is designed to match the original Komatsu geometry for correct shoe clearance and heat dissipation.

How to order the 23A-23-11240 Drum from 3GEN Export?

Ordering from 3GEN Export is straightforward:

1. Verify compatibility – Confirm your machine model and serial number.
2. Contact us – Use the product page inquiry form or email sales@3genexport.com.
3. Get a quote – We provide competitive pricing with volume discounts.
4. Shipping – We ship from our warehouses in Turkey, USA, and Dubai within 5 business days.
5. Delivery – Global shipping via DHL, FedEx, or sea freight. Tracking provided.

We stock the 23A-23-11240 DRUM and many other Komatsu brake and steering parts. Bulk orders welcome.

Why choose 3GEN Export for your Komatsu brake drum?

• OEM-spec quality – Parts meet or exceed original Komatsu specifications.
• Global inventory – Warehouses in Turkey, USA, and Dubai ensure fast delivery.
• Fast shipping – Most orders ship within 5 business days.
• Competitive pricing – Factory-direct pricing with no middlemen.
• Expert support – Our team knows Komatsu heavy equipment parts.

Don’t let a worn brake drum compromise your grader’s safety and performance. Order the 23A-23-11240 DRUM from 3GEN Export today.

Frequently Asked Questions