Published 2/1/2023

Hamar Upgrades Self-Centering Bore Alignment System

The L-703B Self-Centering Bore Alignment System works with Hamar Laser’s patented, self-centering targets that require only one measurement per bore.

Edited by: Chris Pasion

Managing Editor, Modern Machine Shop | Production Machining

Photo Credit: Hamar Laser Instruments Inc.

Hamar Laser Instruments Inc. has released its new, upgraded L-703B Self-Centering Bore Alignment System. The new system uses the L-703B Laser variant of Hamar Laser’s compact L-703 Laser.

The new L-703B Laser replaces the L-705 Laser for applications where the laser is mounted externally. Smaller and lighter than the L-705, the L-703B works with Hamar Laser’s patented, self-centering targets that require only one measurement per bore. Applications include engine blocks, compressor bores, cylinder bores, shaft-bearing bores, stern tubes and more.

“In addition to the new bore laser, our L-703B Self-Centering Bore Alignment System includes our new L-112 Laser Mounting Stand and L-103 Optical Beam Translator,” Rod Hamar, president of Hamar Laser Instruments, says. “The new laser and accessories facilitate alignments in smaller spaces, speed setups and have allowed us to significantly reduce the package pricing. Rounded out with our patented, self-centering targets, there is no better system than the L-703B for high-accuracy bore alignment.”

In addition to being faster and more affordable, Hamar Laser’s new L-703B Self-Centering Bore Alignment System offers a resolution of 0.00004" (0.001 mm). It is also designed to be easier to use and require less training. A bore alignment survey reportedly takes only 15 minutes.

The L-703B now features a built-in rechargeable Lithium-Ion battery with 11 hours of continuous battery life, which replaces the older L-705 Laser’s external battery pack. It also features a new L-112 Laser Mounting Stand, and now offers horizontal coarse translation and vertical angular adjustment, which greatly speed laser setups.

The new L-103 Optical Beam Translator is said to be much easier to use than the L-102 Translator, its predecessor, and is much smaller, making it easier to fit the L-703B and L-103 into tight spaces. With different accessories and a firmware upgrade, the L-703B can also be adapted to several other applications, such as extruder alignment, guideway alignment and lathe and spindle alignment.

The L-703B Laser supports Hamar Laser’s entire series of two-axis cabled bore targets when used with the company’s R-1307 Readouts, and supports Hamar’s R-358 Computer Interface when used with those targets.