The NAB universal pneumatic brake, a high-performance industrial component produced by Han Dong Machinery, serves as a reliable NEXEN BSB pneumatic brake replacement widely used in manufacturing, packaging, and printing industries. When selecting this versatile brake, many buyers often struggle to choose between the T model and the S model due to their similar appearances. To solve this confusion, we’ve detailed the key shaft hole distinctions to help you identify and select the right product quickly.

As shown in the first image, the NABS model features a full-length key slot running vertically through the entire shaft hole without a tensioning sleeve. This design allows for a straightforward fit with the key slot during installation, making it ideal for applications with standard shaft dimensions.

In contrast, the second image highlights the NABT model, which has a half-open key slot in the upper section of the shaft hole—no key slot exists in the lower part. Due to this unique structural design, the NABT model usually requires a sufficiently extended shaft to ensure proper alignment and secure installation, making it suitable for customized shaft setups.

Whether you need a cost-effective replacement for NEXEN BSB pneumatic brakes or a durable brake for your industrialmachinery, understanding the NABS and NABT model differences ensures you pick the perfect fit for your equipment.

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Note: "The technical data in this article is based on the product manual of Shanghai Han Dong Machinery and the official technical materials of NEXEN Group (https://www.nexengroup.com/power-transmission/friction-brakes/rotary-brakes)"