Milwaukee 1-9/16" SDS Max Rotary Hammer Kit

When I first got my hands on the Milwaukee 1-9/16" SDS Max Rotary Hammer Kit, I was immediately impressed by its robust build quality. This tool, model number 2717-21HD, is specifically designed for heavy-duty applications such as drilling and chipping in concrete blocks and reinforced concrete. It’s clear from the outset that Milwaukee has put a lot of thought into making this rotary hammer a reliable workhorse.

The first thing that stands out is the brushless motor. Not only does it provide improved power and runtime, but it also contributes to the overall durability of the tool. Brushless motors are known for their efficiency and longevity, and this one is no exception. It’s paired with advanced electronic protection, which helps in safeguarding the motor and extending the tool's life span.

One of the significant advantages of this rotary hammer is its compatibility with the M18 REDLITHIUM battery system. As someone who already has several Milwaukee tools, this is a huge plus. The ability to swap batteries between tools without worrying about compatibility issues is incredibly convenient. For this review, I used the 9.0 amp-hour batteries, which provided ample power and long runtime, even during intensive tasks.

The tool's performance is impressive, with a no-load RPM of 0-450 and a blow energy of 5.1 ft-lbs. These specifications translate into a tool that can handle tough materials with ease. I tested it on various tasks, including drilling 1-1/2" holes through a 12" thick poured wall and chipping away at some old concrete slabs. The rotary hammer performed admirably in both scenarios, making quick work of the tasks at hand.

One of the features I appreciated the most was the variable speed trigger. This allows for precise control over the drilling speed, which is crucial when working with different materials. The trigger is responsive and easy to use, making it simple to adjust the speed on the fly. The tool also has a function type selector switch with three different modes: drill only, hammer only, and hammer drill. This versatility makes it suitable for a wide range of applications.

Ergonomics play a vital role in the usability of any tool, and Milwaukee has done a commendable job here. The rotary hammer weighs in at 12.15 lbs, which is relatively lightweight for a tool of this caliber. The drop handle design provides a comfortable grip, and the AVS bellows in the handle significantly reduce the shock and vibration transmitted to the user. This makes extended use much more manageable and less fatiguing.

However, it’s not all perfect. During prolonged use, I noticed that the gear box and hammer mechanism can get quite hot. While this didn’t affect the tool’s performance, it’s something to be aware of, especially if you’re working in tight spaces where accidental contact could occur. Another minor drawback is that the tool does not accept SDS shank bits, only SDS Max. While this isn’t a deal-breaker, it’s something to keep in mind when purchasing accessories.

The auto-stop function is a noteworthy safety feature. It detects when the tool binds, such as when hitting rebar, and stops the tool to prevent it from twisting excessively in your hands. This is a significant advantage, especially for those who might be working in less than ideal conditions where such binds are common.

Milwaukee has also included their ONE-KEY technology with this rotary hammer. This allows for tool tracking and management via a smartphone app. While I didn’t find this feature particularly useful for my needs, I can see how it would be beneficial for contractors managing multiple tools across various job sites. It’s a nice touch that adds an extra layer of functionality for those who need it.

In terms of accessories, the tool comes in a sturdy carrying case with space for extra bits and chisels. The inclusion of a tube of grease for the bit shanks is a thoughtful addition. Regular lubrication is essential for maintaining the tool’s performance and longevity, and having the grease readily available encourages proper maintenance.

Overall, the Milwaukee 1-9/16" SDS Max Rotary Hammer Kit is a powerful and versatile tool that excels in heavy-duty applications. Its combination of a brushless motor, advanced electronic protection, and compatibility with the M18 REDLITHIUM battery system makes it a reliable choice for professionals and serious DIYers alike. The ergonomic design and safety features further enhance its appeal, making it a tool that’s both effective and user-friendly.

I would highly recommend this rotary hammer to anyone in need of a robust, cordless solution for drilling and chipping in concrete. While it has a few minor drawbacks, such as the heat build-up and bit compatibility, these are far outweighed by its performance, durability, and convenience. Milwaukee has once again delivered a high-quality tool that stands up to the demands of tough job sites.