Hitachi DH45MR SDS Max 1-3/4-Inch Rotary Hammer

Hitachi DH45MR SDS Max 1-3/4-Inch Rotary Hammer Review

Hitachi DH45MR SDS Max 1-3/4-Inch Rotary Hammer Feature

• 11.6 Amp Motor that delivers 1200 Watts
• Internal Double Insulation "IDI" Technology
• Constant Speed Control and Variable Speed
• 12 Position Variable Lock Mechanism to select Chisel position
• Vibration reducing elastomer covered handles

Hitachi Power Tools introduces the DH45MR, a 1-3/4-inch SDS Max rotary hammer featuring patented Internal Double Insulation (IDI) technology and a best-in-class impact energy of 11.4 foot-pounds. The DH45MR offers the fastest drilling and chiseling speeds on the market and is engineered to conquer concrete, mortar, tile and other hard materials while including features that maximize comfort and convenience.

Internal Double Insulation Technology
Hitachi’s patented IDI technology enables the aluminum housing to be integrated with an injection molded inner nylon core. This technology combines the durability of a metal bodied tool with the double insulation advantages of today’s plastic housings. Because of this revolutionary technology, the tool bearing sits in die cast aluminum, instead of plastic, improving tool reliability and greatly extending tool life.

Speed, Power, Features
Designed with a powerful 11.6 amp motor with 1200 watts of input power and a highly efficient striking transmission, the DH45MR produces 30 percent faster drilling speeds and 15 percent greater chiseling performance than even the closest competitors. Constant speed control delivers consistent and efficient performance through varying loads. Electronic variable speed control gives the tool a full-load speed of 120-240 rpm and an impact rate of 1200-2500 blows per minute, allowing you to manage the tool speed according to the demands of the material.

This multi-duty rotary hammer has an easy-to-use dial for two modes of operation, hammer-drilling and drilling only. The DH45MR has a needle pin slip clutch for high slip torque accuracy, gear protection, and increased user safety. Auto-stop carbon brushes prevent motor damage and prolong service life. The added stability of a metal housing also stops grease leakage caused by heat and stress.

The soft elastomer handle, a feature of Hitachi’s ergonomic "Inspire" design line, provides a secure grip surface, absorbing vibration for comfort and control during operation. Its solid and dependable chuck accepts SDS Max bits and the quick release function makes replacements easy. A 12-position variable lock mechanism allows for simple adjustment of chisels to the optimal working angle.

An adjustable 360° side handle provides better control and can be removed when working in tight spaces for better maneuverability. The side handle is securely attached with a rigid steel bracket and includes a depth gauge for consistent drilling depths.

What's in the Box
Hitachi DH45MR SDS Max 1-3/4" Rotary Hammer, depth gauge, side handle, grease, 4mm and 5mm hex bar wrenches, and an injection molded carrying case with ample storage space for accessories