Hendrickson MAXX22T Air Disc Brakes Explained

When considering advancements in commercial vehicle braking systems, the Hendrickson MAXX22T Air Disc Brake (ADB) package stands out as a significant development. Designed to enhance braking performance, reduce maintenance, and potentially offer weight advantages, understanding its specifications and compatibility is crucial for fleet operators and maintenance professionals. This article delves into the details of the MAXX22T, addressing key questions regarding its features, material options, weight considerations, and the necessary steps for purchase.

Understanding the Hendrickson MAXX22T Air Disc Brake

The MAXX22T is Hendrickson's offering in the air disc brake market, a technology that has become increasingly popular due to its superior stopping power, consistent performance in various weather conditions, and reduced fade compared to traditional drum brakes. Air disc brakes typically offer quicker pad replacement and longer service intervals, leading to improved uptime and lower operational costs.

Key Features and Specifications

The MAXX22T package is available in several configurations, primarily differentiated by rotor mounting (outboard vs. inboard) and wheel size compatibility. The following table outlines some of these key specifications:

It's important to note that Hendrickson offers RTR® (READY-TO-ROLL®) options and the TIREMAAX® tire inflation system as optional additions to their air disc brake packages, further enhancing vehicle efficiency and safety.

Does Hendrickson MAXX22T Save Weight?

One of the frequently asked questions regarding air disc brakes, including the MAXX22T, is their impact on vehicle weight. While specific weight savings can vary significantly based on the exact configuration and comparison point (e.g., comparing to a specific drum brake system), air disc brakes are generally engineered to be competitive in terms of weight. The table above highlights different hub materials, including options like the Dura-Light Hub®, which are specifically designed to reduce unsprung weight. Reducing unsprung weight is a key objective in modern vehicle design, as it can lead to improved ride quality, better handling, and potentially increased fuel efficiency. For precise weight comparisons, it is always best to consult detailed specification sheets for the specific MAXX22T configuration you are considering and compare it directly to the drum brake system it would replace.

Compatibility with Hendrickson Suspensions and Axles

The MAXX22T ADB package is designed for integration with a range of Hendrickson's robust suspension and axle systems. Compatibility is often determined by the wheel size and specific axle or suspension model. Here’s a breakdown of availability:

Availability for 22.5/24.5 Inch Wheels

The MAXX22T and other ADB systems are widely available for popular Hendrickson suspension and axle models designed for 22.5 and 24.5-inch wheels, including:

• INTRAAX® (AANT, AANLS, AANL, AAL, AAEDL, AAEDT)
• INTRAAX®-SP (AAZNT)
• VANTRAAX® (HKANT, HKAT, HKARL)
• ULTRAA-K® (UTKNT)
• Integrated Beam to Axle (B2AHT)
• TRLAXLE®

Availability for 19.5 Inch Wheels

For vehicles utilising 19.5-inch wheels, the following Hendrickson systems are compatible with specific ADB options:

• INTRAAX® (AANT, AANLS, AANL, AAL, AAEDL, AAEDT)
• TRLAXLE®

Notably, the WABCO PAN19 is specified for 19.5-inch wheels.

Availability for 17.5 Inch Wheels

For smaller wheel applications (17.5-inch), compatibility is more limited:

• INTRAAX® (AANT, AANLS, AANL, AAL, AAEDL, AAEDT)
• TRLAXLE®

The WABCO PAN17 is the ADB option for 17.5-inch wheels. It's also worth noting specific exclusions and conditions, such as the MAXX22T not being available on AAEDT 30K / AAEDL 30K models. Furthermore, the WABCO PAN17 is available on the HT250U suspension with TRLAXLE, a 6.5-inch ride height, and limited tracks only.

Unique HCV Rear Mounted Shocks Compatibility

Hendrickson also specifies ADB compatibility with unique Heavy Commercial Vehicle (HCV) rear-mounted shock configurations:

• INTRAAX® AANT23K
• AANLS 20K / AANL 23K
• AAT 23K, 25K, 30K
• AAL 23K, 25K, 30K / AAEDT 30K / AAEDL 30K
• INTRAAX®-SP AAZNT 23K, 46K
• VANTRAAX® HKANT 23K, 40K, 46K / HKAT 50K

It is critical to verify the specific suspension and axle model number for precise ADB compatibility. Additionally, ADB is approved on certain models without SURELOK®, including AAT 23K, 25K, 30K; HKAT 50K; HKAT 69K25; and HKARL.

Purchasing the Disc Brake MAXX 22T

Regarding the purchasing process, a common query is whether a customer needs to be logged in. The provided information clearly states: "You must be logged-in to make a purchase." This is a standard procedure for many online retail or parts distribution platforms, allowing for order tracking, account management, and secure transaction processing. If you do not yet have an account, you will need to register first.

The specific product mentioned, "Disc Brake MAXX 22T with a material number 6402220080," is indicated as available. This material number is crucial for ensuring you are ordering the correct part. If you are interested in other MAXX™ 22T trailer axle configurations, it's advisable to explore the full product range or contact Hendrickson directly.

Maintenance and Performance Considerations

Air disc brakes, including the MAXX22T, generally require less frequent adjustment than drum brakes. However, regular inspections of pads, rotors, and air chambers are still essential. The outboard rotor mounting, featured on some MAXX22T configurations, can simplify brake shoe and rotor replacement, contributing to reduced service times. The choice between different hub materials can also impact maintenance and longevity, with options like Dura-Light Hub® offering potential benefits.

Actual product performance can vary. Factors such as vehicle configuration, operational demands, driving style, and adherence to maintenance schedules will all influence how the MAXX22T performs in real-world conditions. Hendrickson recommends consulting with their representatives for a comprehensive understanding of how the MAXX22T can best serve your specific fleet requirements.

Frequently Asked Questions

Q1: Do I need an account to buy the MAXX22T disc brake?
Yes, you must be logged into an account to make a purchase. If you don't have one, you'll need to register.

Q2: Can the Hendrickson MAXX22T reduce my vehicle's weight?
Yes, air disc brakes, including the MAXX22T, can offer weight savings compared to traditional drum brakes, especially when equipped with lighter hub materials like Dura-Light Hub®. Specific savings depend on the exact configuration.

Q3: Is the MAXX22T compatible with all Hendrickson suspensions?
No, compatibility varies by suspension and axle model, as well as wheel size. It is essential to check the specific model number against Hendrickson's compatibility charts.

Q4: What is the material number for the Disc Brake MAXX 22T?
The material number provided for a specific Disc Brake MAXX 22T is 6402220080.

Q5: Can I add a tire inflation system to the MAXX22T?
Yes, the TIREMAAX® tire inflation system is available as an option with all air disc brake packages, including the MAXX22T.

In conclusion, the Hendrickson MAXX22T Air Disc Brake system offers a compelling upgrade for commercial vehicles, providing enhanced braking performance and potential operational benefits. Understanding its specifications, compatibility with various Hendrickson suspensions, and the purchasing requirements is key to making an informed decision for your fleet.